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HomeMy WebLinkAbout1.06 Engineering ReportAscendigo Adventure Camp i Preliminary Engineering Report Preliminary Engineering Report FOR THE Ascendigo Adventure Camp Garfield County, CO MARCH 18, 2021 Ascendigo Adventure Camp ii Preliminary Engineering Report Preliminary Engineering Report FOR THE Ascendigo Adventure Camp PUD Garfield County, CO Prepared by Roaring Fork Engineering 592 Highway 133 Carbondale, CO 81623 MARCH 18, 2021 Ascendigo Adventure Camp iii Preliminary Engineering Report Table of Contents 1.0 Introduction ............................................................................................................................................ 1 1.1 Site Location ..................................................................................................................................... 1 1.2 Site Description ................................................................................................................................ 1 2.0 Site Design ............................................................................................................................................. 2 2.1 Geotech ............................................................................................................................................. 2 2.2 Roadways and Parking ..................................................................................................................... 4 2.3 Grading and Drainage....................................................................................................................... 8 2.3.1 Existing (Harmony and Whitecloud Parcel) ......................................................................... 8 2.3.2 Proposed (Harmony Parcel) .................................................................................................. 8 2.3.3 Proposed (Whitecloud Parcel) .............................................................................................. 9 2.4 Groundwater and Aquifer Recharge Areas ...................................................................................... 9 2.5 Hydrology and Hydraulics ............................................................................................................. 10 2.6 Erosion Control and SWMP ........................................................................................................... 13 3.0 Utility Design ....................................................................................................................................... 13 3.1 Domestic Water Supply .................................................................................................................. 13 3.2 Domestic Water Quality ................................................................................................................. 14 3.2.1 Domestic Water Demands .................................................................................................. 15 3.3 Raw Water Supply .......................................................................................................................... 16 3.4 Fire Protection Water Supply ......................................................................................................... 17 3.5 Wastewater Treatment .................................................................................................................... 17 3.5.1 Onsite Wastewater Treatment System (OWTS) ................................................................. 17 3.5.2 System A - Base Camp Septic Field ................................................................................... 18 3.5.3 System B - Activity Barn Septic Field ................................................................................ 18 3.5.4 System C - Camper Lodging Septic Field ........................................................................... 19 3.5.5 Staff Lodging Septic Field (System D) ............................................................................... 19 3.5.6 Guest House Septic Field (System E) ................................................................................. 20 3.5.7 Caretaker Residence, Maintenance Barn, and Equestrian Building Septic Field (System F) 20 3.6 Electric Service ............................................................................................................................... 21 3.7 Cable ............................................................................................................................................... 21 3.8 Telephone ....................................................................................................................................... 21 3.9 Natural Gas ..................................................................................................................................... 21 Ascendigo Adventure Camp iv Preliminary Engineering Report List of Tables Table 1 – Garfield County Road Design Standards and Proposed Design Standards…………………….5 Table 2 – Internal Road Design Standards and Proposed Design Standards……………………………...7 Table 3 – Off-Street Parking Analysis…………………………..………………………………….……..8 List of Appendices Appendix A – Parcel Exhibit Appendix B – Site Map Appendix C – HP Geotechnical Reports (1995 and 2008) Appendix D – Kumar Geotechnical Report Appendix E – Site Slopes Exhibit Appendix F – Soil Test Pit Locations Appendix G – CBO Soil Test Report Appendix H – Engineer’s Opinion of Probable Cost Appendix I – Peak Flow, and Storage Calculations Appendix J– Basin Delineation Appendix K – NOAA Rainfall Data Appendix L – Snow Storage Exhibit Appendix M – SGM Water Supply Adequacy Report Appendix N – Water Quality Results Appendix O – Fire Hydrant Memo and Exhibit Appendix P – Wastewater Demand Calculations Appendix Q – Utility Will Serve Letters Appendix R – Intersection Clear Vision Exhibit Appendix S – Road Impact Fees Ascendigo Adventure Camp 1 Preliminary Engineering Report 1.0 Introduction This engineering report presented by Roaring Fork Engineering (RFE) addresses the utilities and civil related work that is necessary to ensure the feasibility of the proposed Ascendigo Adventure Camp. This includes the layout of roadways, structures, utilities, potable water, wastewater, and drainage features to ensure the site is sustainable, functions correctly, and meets Garfield County standards. 1.1 Site Location The development is located above Carbondale, Colorado approximately 0.70 miles north of the Highway 82, in the Missouri Heights area in the Roaring Fork Valley. The property is accessed off of Harmony Lane, approximately 0.30 miles south of County Road 102 (Fender Lane). The legal description of the property is Sections 28 & 29, Township 7 South, Range 87 West, 6th P.M., County of Garfield – State of Colorado. The parcel is a total of 126.781 acres. 1.2 Site Description The site consists of three legal parcels, Whitecloud Ridge and Harmony Heights. Whitecloud Ridge is the lower parcel and is located largely in the west and southwest portion of the property. Whitecloud Ridge was originally platted for a residential subdivision with the possibility of developing 13 homes, and two guest houses. Under current zoning, each home in Whitecould Ridge could have an Accessory Dwelling Unit (ADU), for a total of 26 possible residential units. Whitecloud Ridge has an existing asphalt road called Whitecloud, which starts from Wind River Road and winds through Whitecloud Ridge to access each platted lot. A spur road called Levitt Lane runs east from Whitecloud Road and dead ends into the Harmony Heights parcel. The Whitecloud Ridge parcel has existing telephone, electrical, water, and gas utilities, which are buried and run parallel to the existing roads. The applicant is proposing to vacate the existing subdivision plat for Whitecloud Ridge. The proposed parcel exhibit is shown in Appendix A. The Whitecloud Ridge parcel will contain the Caretaker’s quarters, Maintenance Barn, Hay Barn, Equestrian Facility, Horse Arena, Pasture, Guest House and Staff Lodging as shown in Appendix B. Harmony Heights is the upper parcel located largely on the eastern and northeastern portion of the property. Harmony Heights was platted to have up to eight homes and the water system. Under current zoning, each home in Harmony Heights could have an ADU for a total of 16 residential units. Harmony Heights has two existing drinking water wells, one 200,000-gallon water storage tank, and a small wooden chlorination building. Each well is connected to the chlorination building through its own two- inch line. The two lines combine into one four-inch line in the wellhouse after chlorine is added for disinfection. The four-inch line connects to the existing water storage tank. An eight-inch water line runs from the tank through the Harmony parcel in an existing easement to the lower east side of the Whitecloud Ridge property. From there the water line continues through the Whitecloud Ridge property following the existing roads. An existing gas line follows the same path as the water line to the lower Whitecloud Ridge parcel. Harmony Heights has a limited amount of underground electrical service, which serves the existing wells, water tank, and well house. A small retention pond is located on the Harmony parcel near the existing water tank which is filled using Class A and Class B shares from Missouri Heights Mountain Meadow Irrigation Company (MHMMIC). Ascendigo Adventure Camp 2 Preliminary Engineering Report The lateral enters the property near the northeast corner off of Harmony Lane, and transitions to buried eight-inch pipe, which daylights at the pond. Harmony Heights will contain the Base Camp, Activity Barn, and Camper Lodging as shown in Appendix B. Additionally, a playing field, and three new ponds will be constructed surrounding these buildings. 2.0 Site Design 2.1 Geotech Three separate geotechnical studies exist for the Whitecloud Harmony Heights property. Two were completed by HP Geotech, the first in December of 1995, and second in August 2008. The 1995 report was a comprehensive Geotechnical study completed for the entire Whitecloud property, and the 2008 test report was completed for a specific residential OWTS. Both can be found in Appendix C. In the 1995 report, HP Geotech determined the Whitecloud property consisted of two different geotechnical areas. A third report was completed by Kumar and Associates in December 2020 to assess geologic hazards in accordance with Article 7 Standards Section 7-207 Natural and Geologic Hazards (see Appendix D for full report). The 1995 HP Geotech report and 2020 Kumar and Associates report have similar findings, summarized below. In general, no development is occurring in Avalanche, Landslide, Rockfall, or Alluvial Fan hazardous areas. No corrosive or expansive soils and rocks, major faults, or potential mudflow paths were identified on site. RFE put together a Site Slope Exhibit in accordance with Article 4 Section 4-203. E. for the west and east side of the property included as Appendix E. Slopes for all building sites, and roads are all below 20%. Site assessment findings, and design recommendations from both reports are summarized in subsequent paragraphs. The northern part of the subdivision, where all the development is taking place, is located on Missouri Heights upland which is part of a large basalt plateau with slopes ranging 5 to 20%, located about 400- 600 vertical feet above the Roaring Fork River Valley. The southernmost portion of the property consists of basalt flows and interstratified sedimentary rock with Eagle Valley Evaporite cropping out along the steep slopes. Slopes were estimated to be an average of about 60%. An area identified as a past landslide site was located in this southwestern part of the property, and is identified as now dormant. No major faults were mapped or identified throughout the whole property. HP Geotech and Kumar and Associates independently found the northern upland region of the property consists of Loess and Basalt (Ql/Tbb), and the southern portion of the property consists of Colluvium and Basalt (Qc/Tbb). These areas are separated by a sharp topographic break. HP Geotech and Kumar and Associates recommends no development in the Qc/Tbb region, and that all structures should be set back a minimum of 25 ft from the topographic break point. There are no plans to develop on or near that portion of the property. HP Geotech and Kumar and Associates indicated that the development of standard residential structures should be possible without encountering unusual problems during construction as long the Qc/Tbb and southern steep slope areas are not developed. HP Geotech and Kumar Associates found there is risk for a Ascendigo Adventure Camp 3 Preliminary Engineering Report moderate earthquake in the area, with intensity level VI. This level of earthquake would not cause structural harm to a typical structure, but all buildings should be built to withstand moderately strong ground shaking. The region is listed within Uniform Building Code Seismic Risk Zone 1, which HP Geotech and Kumar and Associates agree with. Given their findings, HP Geotech and Kumar and Associates made the following recommendations for structures being constructed on site. In the event a recommendation contradicts one another, the more conservative recommendation is made: 1. Foundations: a. Foundations can be constructed and bear on natural subsoils at building sites, and footings should be sized for an allowable bearing pressure of 2,000 psf to 3,000 psf. b. Foundation walls should be designed to span local anomalies and resists lateral earth loadings. c. Footings should have a minimum depth of 36 inches for frost protection. 2. Slabs: a. Slabs-on-grade can be constructed to bear on natural soils, with some minor anticipated post-construction settlement. To reduce some effect from movement, the slabs should be constructed separate from bearing walls and columns with expansion joints. b. Floor slab control joints should also be used to reduce damage due to settling. A minimum 4-inch later of free-draining material should underlie basement level slabs. 3. Site Grading: a. Cut depths should not exceed 10 to 12 feet. b. Fills should be limited to 10 feet, and all fills should be compacted to minimum 95% standard proctor density. c. On-site soils can be used for embankment fills, and unretained cut/fill slopes should be graded at 2 horizontal to 1 vertical or flatter. d. Fill should be benched on portions of the hillside exceeding 20% grade. 4. Underdrain System: a. Underdrain systems and free draining gravel should underlie below grade construction to facilitate positive drainage. 5. Radon may be present in the area, and can concentrate in lower level and basements of buildings. Kumar recommends Radon tests be completed post building construction. Radon can be mitigated using several methods as recommended by the EPA. In 1995, HP Geotech dug 8 soil test pits throughout the entire property (see Appendix F for locations of all soil test pits, exploratory pits, and percolation test pits). The test pits varied in subsurface profile from clay and gravel, clay, gravel, and one profile identified as clay and silt. The topsoil ranged in depth from 0.5-1.5 feet in each pit. Profiles of each pit can be found in Exhibit B in the 1995 report. No free water was observed in any of the pits and soils were determined to have low compressibility under loading and wetting conditions. In addition to the 8 soil test pits, percolation tests were done at five holes throughout the property. Results are summarized in Table II of the 1995 report. Percolation rates for all pits were recorded as 30 min/in. except one pit with a recorded rate as 20 min/in. Ascendigo Adventure Camp 4 Preliminary Engineering Report In the August 2008 report, HP Geotech excavated two profile pits on a single lot on the property. No free water was encountered in the two test pits. Both pits had about 6 inches of topsoil, and 5-6 feet of clay underlain with basalt cobbles and boulders. Percolation tests were also conducted in 5 test holes. The percolation rates vary between each hole, with most listed in the range of Sand, and Loamy Sand single grain structureless soils. HP Geotech determined the soils are all acceptable for a conventional OWTS. In March 2020, two subsurface investigations for OWTS development, were completed by CBO at Lots 4 and 8, the reports are included in Appendix G. At Lot 4, two 8 ft pits were dug. The soil profile is similar to the pits dug in 1995 with 1.5 ft dark brown topsoil underlain with calcareous clay matrix, and no bedrock or water encountered. The second pit was similar to the first, with 2 ft of dark brown topsoil underlain with tan calcareous clay matrix and no bedrock or water encountered. Soil type was determined to be Soil Type 2 with a long-term acceptance rate (LTAR) of 0.6 gallons per square foot. The second subsurface investigation at Lot 8 included one 8 ft test pit. The soil profile consisted of 2 ft of topsoil underlain with calcareous clay matrix, and no bedrock or groundwater was encountered. The soil was determined to be Soil Type 2 with a LTAR of 0.6 gallons per square foot. Therefore, an LTAR of 0.60 will be used in the preliminary design of the proposed OWTSs. Additional soil test pits will be dug at each proposed OWTS location on site to confirm the soil type and LTAR for all proposed on-site waste systems before final OWTS permit submission to the County. 2.2 Roadways and Parking The site has two access points from existing county roadways. The main entrance to the Harmony Heights parcel is located along Harmony Road along the eastern property line. This access point utilizes split lanes for each direction of traffic; the entrance (westbound) and the exit (eastbound). Utilizing this split entrance will promote traffic to access the site using Fender Lane via Harmony Lane. This will be the common route while entering and exiting the new development. A no right turn sign will be installed at the exit. The use of Sunset lane, to the south of the property, will not be advised. Harmony Lane is a private road and was developed to serve the various properties around the site. It was originally a gravel road with a chip and seal surface that has mostly worn off. The existing road width is approximately 20 feet, extending to 21 feet in some locations. At the intersection with CR 102 the apron widens to about 50 feet. The proposed Ascendigo entrance off Harmony Lane is approximately 2,300 feet to the south of CR-102. Harmony Lane between the proposed entrance and CR-102 appears to meet the minimum standards for sight distance as does the intersection of CR 102 and Harmony Ln. Ascendigo Adventure Camp 1 Preliminary Engineering Report 1.0 Introduction This engineering report presented by Roaring Fork Engineering (RFE) addresses the utilities and civil related work that is necessary to ensure the feasibility of the proposed Ascendigo Adventure Camp. This includes the layout of roadways, structures, utilities, potable water, wastewater, and drainage features to ensure the site is sustainable, functions correctly, and meets Garfield County standards. 1.1 Site Location The development is located above Carbondale, Colorado approximately 0.70 miles north of the Highway 82, in the Missouri Heights area in the Roaring Fork Valley. The property is accessed off of Harmony Lane, approximately 0.30 miles south of County Road 102 (Fender Lane). The legal description of the property is Sections 28 & 29, Township 7 South, Range 87 West, 6th P.M., County of Garfield – State of Colorado. The parcel is a total of 126.781 acres. 1.2 Site Description The site consists of three legal parcels, Whitecloud Ridge and Harmony Heights. Whitecloud Ridge is the lower parcel and is located largely in the west and southwest portion of the property. Whitecloud Ridge was originally platted for a residential subdivision with the possibility of developing 13 homes, and two guest houses. Under current zoning, each home in Whitecould Ridge could have an Accessory Dwelling Unit (ADU), for a total of 26 possible residential units. Whitecloud Ridge has an existing asphalt road called Whitecloud, which starts from Wind River Road and winds through Whitecloud Ridge to access each platted lot. A spur road called Levitt Lane runs east from Whitecloud Road and dead ends into the Harmony Heights parcel. The Whitecloud Ridge parcel has existing telephone, electrical, water, and gas utilities, which are buried and run parallel to the existing roads. The applicant is proposing to vacate the existing subdivision plat for Whitecloud Ridge. The proposed parcel exhibit is shown in Appendix A. The Whitecloud Ridge parcel will contain the Caretaker’s quarters, Maintenance Barn, Hay Barn, Equestrian Facility, Horse Arena, Pasture, Guest House and Staff Lodging as shown in Appendix B. Harmony Heights is the upper parcel located largely on the eastern and northeastern portion of the property. Harmony Heights was platted to have up to eight homes and the water system. Under current zoning, each home in Harmony Heights could have an ADU for a total of 16 residential units. Harmony Heights has two existing drinking water wells, one 200,000-gallon water storage tank, and a small wooden chlorination building. Each well is connected to the chlorination building through its own two- inch line. The two lines combine into one four-inch line in the wellhouse after chlorine is added for disinfection. The four-inch line connects to the existing water storage tank. An eight-inch water line runs from the tank through the Harmony parcel in an existing easement to the lower east side of the Whitecloud Ridge property. From there the water line continues through the Whitecloud Ridge property following the existing roads. An existing gas line follows the same path as the water line to the lower Whitecloud Ridge parcel. Harmony Heights has a limited amount of underground electrical service, which serves the existing wells, water tank, and well house. A small retention pond is located on the Harmony parcel near the existing water tank which is filled using Class A and Class B shares from Missouri Heights Mountain Meadow Irrigation Company (MHMMIC). Ascendigo Adventure Camp 2 Preliminary Engineering Report The lateral enters the property near the northeast corner off of Harmony Lane, and transitions to buried eight-inch pipe, which daylights at the pond. Harmony Heights will contain the Base Camp, Activity Barn, and Camper Lodging as shown in Appendix B. Additionally, a playing field, and three new ponds will be constructed surrounding these buildings. 2.0 Site Design 2.1 Geotech Three separate geotechnical studies exist for the Whitecloud Harmony Heights property. Two were completed by HP Geotech, the first in December of 1995, and second in August 2008. The 1995 report was a comprehensive Geotechnical study completed for the entire Whitecloud property, and the 2008 test report was completed for a specific residential OWTS. Both can be found in Appendix C. In the 1995 report, HP Geotech determined the Whitecloud property consisted of two different geotechnical areas. A third report was completed by Kumar and Associates in December 2020 to assess geologic hazards in accordance with Article 7 Standards Section 7-207 Natural and Geologic Hazards (see Appendix D for full report). The 1995 HP Geotech report and 2020 Kumar and Associates report have similar findings, summarized below. In general, no development is occurring in Avalanche, Landslide, Rockfall, or Alluvial Fan hazardous areas. No corrosive or expansive soils and rocks, major faults, or potential mudflow paths were identified on site. RFE put together a Site Slope Exhibit in accordance with Article 4 Section 4-203. E. for the west and east side of the property included as Appendix E. Slopes for all building sites, and roads are all below 20%. Site assessment findings, and design recommendations from both reports are summarized in subsequent paragraphs. The northern part of the subdivision, where all the development is taking place, is located on Missouri Heights upland which is part of a large basalt plateau with slopes ranging 5 to 20%, located about 400- 600 vertical feet above the Roaring Fork River Valley. The southernmost portion of the property consists of basalt flows and interstratified sedimentary rock with Eagle Valley Evaporite cropping out along the steep slopes. Slopes were estimated to be an average of about 60%. An area identified as a past landslide site was located in this southwestern part of the property, and is identified as now dormant. No major faults were mapped or identified throughout the whole property. HP Geotech and Kumar and Associates independently found the northern upland region of the property consists of Loess and Basalt (Ql/Tbb), and the southern portion of the property consists of Colluvium and Basalt (Qc/Tbb). These areas are separated by a sharp topographic break. HP Geotech and Kumar and Associates recommends no development in the Qc/Tbb region, and that all structures should be set back a minimum of 25 ft from the topographic break point. There are no plans to develop on or near that portion of the property. HP Geotech and Kumar and Associates indicated that the development of standard residential structures should be possible without encountering unusual problems during construction as long the Qc/Tbb and southern steep slope areas are not developed. HP Geotech and Kumar Associates found there is risk for a Ascendigo Adventure Camp 3 Preliminary Engineering Report moderate earthquake in the area, with intensity level VI. This level of earthquake would not cause structural harm to a typical structure, but all buildings should be built to withstand moderately strong ground shaking. The region is listed within Uniform Building Code Seismic Risk Zone 1, which HP Geotech and Kumar and Associates agree with. Given their findings, HP Geotech and Kumar and Associates made the following recommendations for structures being constructed on site. In the event a recommendation contradicts one another, the more conservative recommendation is made: 1. Foundations: a. Foundations can be constructed and bear on natural subsoils at building sites, and footings should be sized for an allowable bearing pressure of 2,000 psf to 3,000 psf. b. Foundation walls should be designed to span local anomalies and resists lateral earth loadings. c. Footings should have a minimum depth of 36 inches for frost protection. 2. Slabs: a. Slabs-on-grade can be constructed to bear on natural soils, with some minor anticipated post-construction settlement. To reduce some effect from movement, the slabs should be constructed separate from bearing walls and columns with expansion joints. b. Floor slab control joints should also be used to reduce damage due to settling. A minimum 4-inch later of free-draining material should underlie basement level slabs. 3. Site Grading: a. Cut depths should not exceed 10 to 12 feet. b. Fills should be limited to 10 feet, and all fills should be compacted to minimum 95% standard proctor density. c. On-site soils can be used for embankment fills, and unretained cut/fill slopes should be graded at 2 horizontal to 1 vertical or flatter. d. Fill should be benched on portions of the hillside exceeding 20% grade. 4. Underdrain System: a. Underdrain systems and free draining gravel should underlie below grade construction to facilitate positive drainage. 5. Radon may be present in the area, and can concentrate in lower level and basements of buildings. Kumar recommends Radon tests be completed post building construction. Radon can be mitigated using several methods as recommended by the EPA. In 1995, HP Geotech dug 8 soil test pits throughout the entire property (see Appendix F for locations of all soil test pits, exploratory pits, and percolation test pits). The test pits varied in subsurface profile from clay and gravel, clay, gravel, and one profile identified as clay and silt. The topsoil ranged in depth from 0.5-1.5 feet in each pit. Profiles of each pit can be found in Exhibit B in the 1995 report. No free water was observed in any of the pits and soils were determined to have low compressibility under loading and wetting conditions. In addition to the 8 soil test pits, percolation tests were done at five holes throughout the property. Results are summarized in Table II of the 1995 report. Percolation rates for all pits were recorded as 30 min/in. except one pit with a recorded rate as 20 min/in. Ascendigo Adventure Camp 4 Preliminary Engineering Report In the August 2008 report, HP Geotech excavated two profile pits on a single lot on the property. No free water was encountered in the two test pits. Both pits had about 6 inches of topsoil, and 5-6 feet of clay underlain with basalt cobbles and boulders. Percolation tests were also conducted in 5 test holes. The percolation rates vary between each hole, with most listed in the range of Sand, and Loamy Sand single grain structureless soils. HP Geotech determined the soils are all acceptable for a conventional OWTS. In March 2020, two subsurface investigations for OWTS development, were completed by CBO at Lots 4 and 8, the reports are included in Appendix G. At Lot 4, two 8 ft pits were dug. The soil profile is similar to the pits dug in 1995 with 1.5 ft dark brown topsoil underlain with calcareous clay matrix, and no bedrock or water encountered. The second pit was similar to the first, with 2 ft of dark brown topsoil underlain with tan calcareous clay matrix and no bedrock or water encountered. Soil type was determined to be Soil Type 2 with a long-term acceptance rate (LTAR) of 0.6 gallons per square foot. The second subsurface investigation at Lot 8 included one 8 ft test pit. The soil profile consisted of 2 ft of topsoil underlain with calcareous clay matrix, and no bedrock or groundwater was encountered. The soil was determined to be Soil Type 2 with a LTAR of 0.6 gallons per square foot. Therefore, an LTAR of 0.60 will be used in the preliminary design of the proposed OWTSs. Additional soil test pits will be dug at each proposed OWTS location on site to confirm the soil type and LTAR for all proposed on-site waste systems before final OWTS permit submission to the County. 2.2 Roadways and Parking The site has two access points from existing county roadways. The main entrance to the Harmony Heights parcel is located along Harmony Road along the eastern property line. This access point utilizes split lanes for each direction of traffic; the entrance (westbound) and the exit (eastbound). Utilizing this split entrance will promote traffic to access the site using Fender Lane via Harmony Lane. This will be the common route while entering and exiting the new development. A no right turn sign will be installed at the exit. The use of Sunset lane, to the south of the property, will not be advised. Harmony Lane is a private road and was developed to serve the various properties around the site. It was originally a gravel road with a chip and seal surface that has mostly worn off. The existing road width is approximately 20 feet, extending to 21 feet in some locations. At the intersection with CR 102 the apron widens to about 50 feet. The proposed Ascendigo entrance off Harmony Lane is approximately 2,300 feet to the south of CR-102. Harmony Lane between the proposed entrance and CR-102 appears to meet the minimum standards for sight distance as does the intersection of CR 102 and Harmony Ln. Ascendigo Adventure Camp 5 Preliminary Engineering Report Ascendigo proposes to remove the remainder of the existing chip and seal surface between the primary entrance and CR-102, regrade the road surface to promote drainage, and apply a new chip and seal pavement surface as required in Table 7-107 of the County code. The projected average daily traffic (ADT) during peak days, including existing traffic, is approximately 446 vehicles as shown in the traffic analysis completed by McDowell Engineering. Given the peak ADT, Harmony Lane would need to meet Minor Collector (401-2500 ADT) design standards. Peak ADT will only occur during part of the year when the camp is in full operation. A waiver for the total road width in Table 7-107 of the County code is proposed to help reduce speeds, keep with the rural character of the area, and keep maintenance costs manageable for users. Currently the maintenance of the road is the responsibility of a user Road Association to which Ascendigo will participate. A copy of the current Road Association Agreement is attached as Exhibit P. The County standards and the proposed road geometry are provided in Table 1. An intersection clear vision exhibit is provided in Appendix R. Table 1: Garfield County Road Design Standards and Proposed Design Standards Design Standard Garfield County Table 7-107 Standard Proposed Design Standard Design Capacity (ADT) 201-400 (secondary access) Lane Width (Feet) 11 10 Shoulder (Feet) 4 Varies based on existing conditions Ditch Width (Feet) 6 Varies based on existing conditions Cross Slope (%) 2 Varies based on existing conditions Shoulder Slope (%) 5 Varies based on existing conditions Road Surface Chip and Seal Chip and Seal Ascendigo Adventure Camp 6 Preliminary Engineering Report Lane narrowing is a traffic calming strategy utilized and promoted by the U.S. Department of Transportation to help reduce speeds, increase safety, and minimize crashes. Reduced lane widths reduce the opportunity for aggressive driving, thereby decreasing the severity and frequency of crashes. It is widely used throughout the United States and allows for lane widths as small as nine feet. The AASTHO Guide for low-volume roads is based primarily on limiting crash frequency and severity because it is derived from a formal risk assessment. Section 4.2.2 of the AASTHO Guide for Low Volume Roads indicates the cross-section widths of existing roads need not be modified except in those cases where there is evidence of a site-specific crash pattern. We are currently unaware of any crash specific patterns on Harmony Lane that might require mitigation through road widening. The AASHTO Guide also allows for a total roadway width for new construction in mountainous areas when the ADT is less than 600. Given this information the existing road should be adequate for the proposed use. Roadway improvements will be submitted to the Garfield County Road Engineer for review and approval prior to construction. An engineer’s opinion of probable cost for this work is provided in Appendix H. The second entrance, which is used as the current access point to the Whitecloud Ridge parcel, is from Whitecloud Road along the northern property line. Whitecloud Road dead ends into Wind River Road, which connects to Harmony Lane. This northern access point is intended for minimal access, primarily emergency vehicles. All other vehicles will access the site through the new entrance off Harmony. Portions of the existing Whitecloud Road within the property limits will have crack repairs performed and the two-foot shoulders regraded. A 22-foot-wide roadway with gravel shoulders ranging from two to four-feet is proposed as the main circulating road within the Harmony Heights parcel. Levitt Lane will be extended through the Harmony Parcel and connected to Harmony Lane. Drainage ditches are proposed along each side of the road to facilitate removal of stormwater. All roads are either crowned or cross sloped to mitigate ponding on the roadway surfaces. The proposed Levitt Lane meets a 20-mph design speed per AASHTO Design Standards for stopping sight distance. Since the internal roads for Ascendigo are private, typically emergency access road standards only need to be met. Discussions with the local fire jurisdiction indicated the minimum road width should be 20 feet for a two-lane road with optional shoulders. Table 2 shows the internal road design standards for this project, which meet the County’s requirements. Ascendigo Adventure Camp 7 Preliminary Engineering Report Table 2: Internal Road Design Standards and Proposed Design Standards Design Standard Per Internal Road Section Traffic Counts Per Section (ADT) Garfield County Table 7-107 Standard Proposed Design Standard Harmony to Base Camp 210 Lane Width (Feet) 11 11 Shoulder Width (Feet) 4 4 Ditch Width (Feet) 6 6 Cross Slope (%) 2 2 Shoulder Slope (%) 5 5 Maximum % Grade 10 6 Road Surface Chip/Seal or Gravel Chip/Seal Base Camp to Staff Lodging 154 Lane Width (Feet) 11 11 Shoulder Width (Feet) 2 4 Ditch Width (Feet) 6 6 Cross Slope (%) 2 2 Shoulder Slope (%) 5 5 Maximum % Grade 12 12 Road Surface Gravel Chip/Seal Staff Lodging to Caretaker 78 Lane Width (Feet) 8 11 Shoulder Width (Feet) 2 2 Ditch Width (Feet) 4 6 Cross Slope (%) 2 2 Shoulder Slope (%) 5 5 Maximum % Grade 12 8 Road Surface Gravel Chip/Seal There are connecting driveways located at each structure within the parcel; Base Camp Drive, Base Camp Service Access, Activity Barn Drive, and Camper Lodging Drive. Each of these adjacent driveways are proposed to be a minimum of 16-feet wide with gravel shoulders. Multiple parking areas within the property are proposed. There are 25 proposed parking stalls at base camp with an overflow parking area to the northeast of base camp with 8 additional parking stalls. The overflow parking area also serves as the delivery truck drop-off and turnaround location for the base camp. The turnaround geometry allows up to an AASHTO WB-40 truck to safely drop-off and exit the property for base camp deliveries. Eight parking stalls are proposed at the activity barn drive. Six parallel parking stalls are proposed at the camper lodging structure. There is also a parking area located at the staff lodging structure that provides 22 parking stalls. Table 3 shows an off-street parking analysis per Section 7-302 of the County Code for the site that was based on the closest fit of use types. Ascendigo Adventure Camp 8 Preliminary Engineering Report Table 3: Off-Street Parking Analysis Structure Garfield County Section 7-302 Req. Proposed No. of Parking Spaces Use Type Base Camp 27 33 Dining and Public Facility Activity Barn 49 8 Public Facility Camper Lodging 13 6 Lodging Staff Lodging 24 22 Lodging Guest Cabin 2 3 Lodging Maintenance Barn 8 8 Public Facility Caretaker’s Residence 4 6 Residential Equestrian Facility 8 8 Public Facility 2.3 Grading and Drainage 2.3.1 Existing (Harmony and Whitecloud Parcel) The existing topography of the site generally slopes in a northeast to southwest direction with slopes varying from 5 to 20 percent across the northern half of the property. This area is mostly Missouri Heights upland and was irrigated in the past. The southern half of the property includes an escarpment with grades ranging from 20 to 60 percent. The western property line abuts a steeper drainage that has grades ranging from 20 to 60 percent. There are no major drainages that cross through the property. Several small first order drainages start on the border of the upland and escarpment areas. There is also a drainage that abuts the western property line. The vegetation mainly consists of sage, juniper and grasses. The Whitecloud parcel was improved in early 2000 with an asphalt access road that has two 11-foot lanes and ditches for drainage. The road generally runs east to west and has a spur that runs towards the Harmony parcel. All roadside drainage is routed to a detention basin on the west side of the site using ditches and culverts. The detention basin outlet pipe directs stormwater to the western drainage. Stormwater on the Harmony parcel flows south following smaller existing drainages. No paved roads exist on the Harmony Parcel, only a two-track for accessing the existing wells and water tank. Existing drainage basins were delineated to determine the pre-development conditions of the property. The analyzed peak flows for the existing delineated basins are provided in the Appendix I. 2.3.2 Proposed (Harmony Parcel) The proposed development includes a road extension across the Harmony parcel, three structures, a playing field, a stream course, two small ponds, and one large pond within the Harmony Heights parcel. The proposed grading of the parcel generally follows the existing grade of northeast to southwest. Finish floor elevations, roadways and stream courses follow natural grade to limit import and export volumes. Positive drainage is maintained away from all structures and roadways. Approximately ten acres within this parcel are being disturbed. A cut/fill analysis was performed with most of the excess material being used for the proposed berms and over lot grading to limit unnecessary trucking. All roadways on the Harmony parcel are cross sloped to follow the natural grade of the parcel and aid with the collection of runoff from the road. Roadside ditches used to collect runoff are typically a Ascendigo Adventure Camp 9 Preliminary Engineering Report minimum of two-feet deep with three to one side-slopes. The ditches have the capacity to convey the 100- year storm event through the site to its natural drainage course. Drywells are proposed to collect runoff from all of the impervious areas in the Harmony Heights parcel including the proposed buildings. The drywells are sized to detain and release the 25-year, 24-hour storm event using the modified Federal Aviation Administration (FAA) Rational-based equation. The 100-year storm water event will bypass the drywells. All released runoff will transition back to sheet flow conditions using rip-rap or other approved best management practices (BMP) to mitigate erosion. The storage volumes compare the pre-developed to developed condition of each associated basin. The iterative formula used to size the detention structures can be found in the Appendix I. Proposed basin and subbasin delineations can be found in the Appendix J. 2.3.3 Proposed (Whitecloud Parcel) An existing detention pond located on the west side of the parcel shall be used to detain roadway runoff for the Whitecloud Ridge parcel. This detention pond will have a controlled outlet and an emergency overflow at the water level surface. Piping and ditches used to convey stormwater to the pond are sized for the 100-year event per Garfield County Development Code in Article 7. All proposed buildings on this parcel will utilize drywells to meet the County code unless they can direct flow to the existing detention pond. The detention pond and drywells have been sized to detain for the 25- year, 24-hour storm event using the modified FAA Rational-based equation. The 100-year storm water event will bypass the pond and drywells. All released runoff will transition back to sheet flow conditions using rip-rap or other approved best management practices (BMP) to mitigate erosion. The storage volumes compare the pre-developed to developed condition of each associated basin. The iterative formula used to size the detention structures can be found in the Appendix I. Proposed basin and subbasin delineations can be found in the Appendix J. 2.4 Groundwater and Aquifer Recharge Areas Groundwater and aquifer recharge areas are located through the Harmony and Whitecloud parcels in four forms. Infiltration of stormwater/surface runoff through overland flow, infiltration of irrigation water, infiltration of stormwater through an existing detention pond and proposed drywells, and infiltration of treated wastewater using septic fields. These forms of infiltration are allowed per County code and are being designed to their standards. There shouldn’t be negative impacts to groundwater or local aquifer. Surface runoff is being treated for water quality utilizing overland flow, detention basins, and drywells. Surface water runoff is being collected and discharged according to County requirements, which are in place to help reduce impacts to water courses and groundwater. The closest floodplain to the site is located along the Roaring Fork River, which is more than half a mile to the south of the property and more than 600 vertical feet below. The properties should have minimal effect on the floodplain given the drainage practices being used and the separation distance. Ascendigo Adventure Camp 10 Preliminary Engineering Report Based on the previous geotechnical reports and soil analysis for septic systems, the subsoil appears to have the ability to adequately support waste disposal systems. For reference, the long-term acceptance rate (LTAR) determined from test pits was approximately 0.60, which indicates the soils can treat the wastewater effectively. The existing topography of the site generally slopes in a northeast to southwest direction with slopes varying from 5 to 20 percent across the northern half of the property. This area is mostly Missouri Heights upland and was irrigated in the past. The southern half of the property includes an escarpment with grades ranging from 20 to 60 percent. The western property line abuts a steeper drainage that has grades ranging from 20 to 60 percent. There are no major drainages that cross through the property. Several small first order drainages start on the border of the upland and escarpment areas. 2.5 Hydrology and Hydraulics Peak Flows were calculated for the 25-year storm event. Rainfall intensities were derived from the NOAA Atlas 14 Point Precipitation Frequency Estimates for the location of the site. The iterative formula compares the pre-developed runoff and the developed runoff to determine the required storage volume using the 24-hour storm event. Runoff Coefficients (C) used in the analysis are a function of the Soil Group, which in this case are B. It also uses the percentage of impervious area within each sub basin to determine runoff volumes. The iterative time of concentration integers are reflected in the intensity values from the NOAA Atlas 14 Table presented in the Appendix K. The Runoff Coefficient (C) of each basin is multiplied by the Rainfall Intensity (I) and the acreage of each Major Basin (A) to determine the peak discharge for that basin. The site was split into 22 basins using site topography, which all have a point of concentration as shown in the basin map. The storage calculations for a 25-year, 24-hour storm event for all basins are provided in the Appendix I. Basin 1 begins at Harmony Road at the eastern property line. This basin includes Levitt Lane at the entrance to the base camp loop, the base camp service road, and some sidewalk. Three surface drains are located at low points in the basin and convey runoff to a drywell. Roadside ditches are used to collect impervious runoff from the roads. This basin is 1.50 acres and 45-percent impervious. This basin produces 2.16 cfs and the detention structures are sized for 792 ft3. A drywell with a controlled release is proposed for detention of this basin. Basin 2 begins at Harmony Road and consists of undisturbed pervious area north of Levitt lane and small amount of hardscaping. The basins are mainly conveyed through drainage ditches. Basin 2 is 0.91 acres and 10-perent impervious. This basin produces 0.95 cfs and the detention structure is sized for 160 ft3. A drywell with a controlled release is proposed for detention of this basin. Basin 3 consists of the base camp structure, concrete walkways and patios, and the large playing field. Stormwater is conveyed through downspout piping from the roof structures and drainage swales for the concentrated overland flow. This basin is 1.14 acres and 32-percent impervious. This basin produces 3.38 cfs and the detention structures are sized for 478 ft3. A drywell with a controlled release is proposed for detention of this basin. Ascendigo Adventure Camp 11 Preliminary Engineering Report Basin 4 includes the base camp parking area, concrete walkways, and a portion of the activity barn roof structure. Stormwater is either piped to a drywell at downspouts or collected through the grate through overland flow at a low point. This basin is 0.40 acres and 65-percent impervious. This basin produces 1.43 cfs and detention structures are sized for 367 ft3. A drywell with a controlled release is proposed for detention of this basin. Basin 5 is a completely pervious basin above the base camp parking lot. This basin is 0.29 acres and 0- percent impervious. All runoff is collected through a drainage swale and routed to a low point. This basin produces 0.62 cfs and no detention is required since the basin is remaining undisturbed from the pre- developed condition of the basin. A drywell with a controlled release is proposed for detention of this basin. Basin 6 includes the remaining roof structure from the activity barn, the activity barn parking area, and concrete walkways. Stormwater is either piped to a drywell at downspouts or collected through the grate via overland flow at a low point. This basin is 0.34 acres and 50-percent impervious. This basin produces 1.09 cfs and detention structures are sized for 223 ft3. A drywell with a controlled release is proposed for detention of this basin. Basin 7 consists of an asphalt and concrete walkway located north of the activity barn. Stormwater is collected through a drainage ditch and routed to a grated drywell. This basin is 0.64 acres and 36-percent impervious. This basin produces 1.94 cfs and detention structures are sized for 304 ft3. A drywell with a controlled release is proposed for detention of this basin. Basin 8 only includes the portion of Levitt Lane at the activity barn drive entrance. Stormwater is collected through a drainage ditch and routed to a grated drywell. This basin is 0.36 acres and 24-percent impervious. This basin produces 0.66 cfs and detention structures are sized for 111 ft3. A drywell with a controlled release is proposed for detention of this basin. Basin 9 includes a portion of the camper lodging roof structure, the camper lodging roadway, a section of Levitt Lane, and some concrete walkways. Stormwater is either piped to a drywell at downspouts or conveyed through ditches and a culvert to the grated drywell. This basin is 0.59 acres and 37-percent impervious. This basin produces 1.80 cfs and detention structures are sized for 281 ft3. A drywell with a controlled release is proposed for detention of this basin. Basin 10 consists of only pervious areas above Levitt Lane, north of the camper lodging structure. Stormwater is collected through drainage ditches and terminates at a culvert, north of Levitt Lane. This basin is 0.50 acres and 0-percent impervious. This basin produces 0.76 cfs. No detention is proposed. All runoff is released through a cross culvert under Levitt Lane, below the camper lodging structure. Rip rap at the outlet culvert is proposed to prevent erosion during storm events. Basin 11 is the remaining section of camper lodging roof structure. Stormwater from the roof is piped to a drywell at downspout outlets. This basin is 0.10 acres and 84-percent impervious. This basin produces 0.43 cfs and detention structures are sized for 139 ft3. A drywell with a controlled release is proposed for detention of this basin. Basin 12 consists of only pervious areas above Levitt Lane, in between the camper lodging and staff lodging structures. Stormwater is all collected at the roadside drainage ditch to a low point at a culvert. Ascendigo Adventure Camp 12 Preliminary Engineering Report This basin is 1.64 acres and 0-percent impervious. This basin produces 1.99 cfs. No detention is proposed. All runoff is released through a cross culvert under Levitt Lane, below the staff lodging structure. Rip rap at the outlet culvert is proposed to prevent erosion during storm events. Basin 13 is the staff lodging roof structure. Stormwater is piped to a drywell at downspout outlets. This basin is 0.14 acres and 72-percent impervious. This basin produces 0.55 cfs and detention structures are sized for 152 ft3. A drywell with a controlled release is proposed for detention of this basin. Basin 14 includes the roadway section of Levitt Lane that connects the camper lodging to the staff lodging structures. Stormwater is collected through drainage ditches and is routed to a grated lid drywell at the low point in the ditch system, south of the staff lodging structure. This basin is 0.61 acres and 56- percent impervious. This basin produces 1.30 cfs and detention structures are sized for 451 ft3. A drywell with a controlled release is proposed for detention of this basin. Basin 15 includes the hardscaped area that is between the staff lodging structure and the staff lodging parking lot. Stormwater is routed through overland flow to the low point where there is a grated drywell. This basin is 0.17 acres and 26-percent impervious. This basin produces 0.48 cfs and detention structures are sized for 62 ft3. A drywell with a controlled release is proposed for detention of this basin. Basin 16 includes the impervious area that is north of the staff lodging structure and the staff lodging parking lot area. Stormwater is either piped via inlets or collected at the grated drywell lid through overland flow at a low point. Drainage ditches are used to concentrate flow to low points. This basin is 2.42 acres and 14-percent impervious. This basin produces 4.18 cfs and detention structures are sized for 427 ft3. A drywell with a controlled release is proposed for detention of this basin. Basin 17 is the large existing basin between the existing ridge that splits the two parcels on the property and the existing Whitecloud Road. Impervious area is all from the Whitecloud Road. Stormwater is directed to drainage ditches and terminates at a low point with a culvert opening. This basin is 6.35 acres and 6-percent impervious. This basin produces 5.92 cfs and detention structures are sized for 604 ft3. This basin ties into downstream basins through a culvert system. All runoff from this basin ultimately ends at the existing detention basin at the western property line. This detention structure has a controlled release. Basin 18 is the guest cabin roof structure and autocourt. Stormwater is either piped to a drywell at downspouts or collected through the grate through overland flow at a low point. This basin is 0.10 acres and 93-percent impervious. This basin produces 0.52 cfs and detention structures are sized for 187 ft3. A drywell with a controlled release is proposed for detention of this basin. Basin 19 includes the existing Whitecloud Road along the ridge of the Whitecloud Ridge parcel. Stormwater is collected through roadside ditches. These ditches connect to a culvert system that ultimately terminates at the existing detention basin at the western property line. This basin is 3.22 acres and 29-percent impervious. This basin produces 3.53 cfs and detention structures are sized for 1,223 ft3. Basin 20 is the maintenance barn area. Impervious areas include the structures and roadways. Stormwater is collected at inlets which is then piped to the existing detention basin. Swales are used to concentrate flows at two low points within the basin. Basin 20 is 1.06 acres and 28-percent impervious. The basin produces 3.00 cfs and detention structures are sized for 386 ft3. The existing detention basin is the point of concentration for the basin. Ascendigo Adventure Camp 13 Preliminary Engineering Report Basin 21 is mostly pervious area with a portion of impervious area from Whitecloud Road that drains towards the caretaker residence structures. Stormwater is collected through a drainage swale that routes around the structures and is sent back to existing sheet flow condition. Rip rap is proposed at the swale termination to mitigate erosion. This basin is 0.18 acres and 17-percent impervious. This basin produces 0.48 cfs. No detention is proposed. Basin 22 is the caretaker residence area. Impervious areas include the roof structures and the driveway. Stormwater is collected at a low point in the front yard of the area and piped to the existing detention basin. Basin 22 is 0.47 acres and 27-percent impervious. This basin produces 1.33 cfs and detention structures are sized for 171 ft3. Drywells and the existing detention pond on the west side of the Whitecloud parcel are the main forms of detention which will, reduce runoff to pre-developed flows, provide water quality, and promote infiltration. Inlet structures, piping, swales, depressions, and overflow structures will convey runoff through the site. Drywells were proposed in strategic areas to help control and infiltrate surface runoff. The amount of impervious area was used to size the stormwater pipes and structures. The buried storm drains provide adequate capacity for the 100-year storm event. All culverts are a minimum of 18-inches in diameter and provide adequate capacity for peak flows. The ultimate receiving waters will be the Roaring Fork River. Snow storage is provided in the road side swales. On the eastern portion of the property snow can be stored on both sides of the road. Additional snow storage exists in turn around medians at the Base Camp and Camper Lodging buildings. The Activity Barn also has snow storage located on the southern side of the parking lot. On the western side of the property snow storage is available on the southern side of Whitecloud Road, and around the outside of the cul-de-sac. The guest house driveway, caretaker residence driveway, and maintenance barn driveway all have snow storage along the western side of the driveways. Snow can be plowed and stored at the end of the maintenance barn parking lot as well. See Appendix L. 2.6 Erosion Control and SWMP The area of disturbance is larger than one acre, so a Storm Water Management Plan is required, and an application will be filed with the Colorado Department of Public Health and Environment for the work. During construction, Best Management Practices (BMPs) will be used to mitigate sediment transport and erosion due to storm events. Temporary BMPs will consist of silt fence, erosion logs, check dams, storm inlet and drain protection, temporary sediment traps and depressions, berms, and surface roughening. These BMPs will be maintained and improved during construction as needed. The County vegetation manager will inspect the revegetation of the site after construction and determine if the site is adequately revegetated. 3.0 Utility Design 3.1 Domestic Water Supply In accordance with 2013 Garfield County Land Use and Development Code (LUDC), Article 4 Section 4- 203. M. requires that any development served by a Water Supply Entity shall submit a letter prepared by Ascendigo Adventure Camp 14 Preliminary Engineering Report the engineer of the Water Supply Entity. The Water Supply Adequacy Report (Appendix M) and subsequent sections include all letter requirements listed in Sections M.1.a.1.-(a-f). Potable water for the campground will be supplied from two existing wells, Levitt Wells 2 and 3. The Ascendigo property has water rights for both wells. An additional Levitt Well 1, is permitted on the property, but it is not fully developed at this time. Wells are decreed as alternate points of diversion to the Basalt Conduit under Case No. 01CW305 and can utilize 14.9 AF/year, at a maximum simultaneous pumping rate of 50 gpm from all three wells. Currently, the wells can be used for indoor domestic use, stock watering, and outdoor irrigation. Contract 269 will need to be modified to reflect the new property owner and purchase of both Whitecloud and Harmony Heights property. Additionally, the primary uses of the Levitt Wells need to be revised to accurately reflect the proposed educational operations. For more details read the Water Supply Adequacy Report in Appendix M. A pump test was performed on Levitt Well 2, and Well 3 in September 2020. The test was broken up into three phases: (1) 3 days of continuous pumping, (2) 16 hours of pumping with 8 hours off, and (3) recovery for 8 days. Results of all three phases indicate adequate physical supply, with the potential for a sustained minimal drop (~1-2 ft) in the water column (54.2 ft of drawdown available) during peak operations. For more test details and results, including drawdown and recovery charts please see Appendix M. 3.2 Domestic Water Quality Water quality samples were taken as a composite sample from Levitt Wells 2 and 3. Wells 2 and 3 are drilled to 320 ft and 360 ft respectively and are classified as groundwater wells not under the influence of surface water. The wells produce safe drinking water in accordance with EPA primary and secondary drinking water standards, results are included in Appendix N. Analysis included testing for water hardness, with a result of 259 mg/L, indicating hard water. Hardness can leave residue on cook ware and suppress soaping effectiveness. Hardness can cause calcium scaling, especially when heated. Garfield County Water Treatment Decision Guide states that any water hardness value over 175 mg/L is considered hard, and anything over 500 mg/L may not be desirable for consumption. With a reported hardness of 259 mg/L, the water is considered hard but still desirable for consumption. Several indices exist which can help predict water scaling and corrosive behavior. The Langelier Saturation Index, Ryznar Index, and Stiff & Davis Index were all calculated for the source water. Results from these calculations indicate that the water has low scale forming potential and is overall balanced with a slight tendency towards a calcium carbonate dissolving/corrosive quality. This is positive for the water system, since when water is heated it shifts the indices closer to scale forming behavior. Only when the water is heated to temperatures over 122 F the indices reach the designated “scale forming behavior” range. This should help protect the internal plumbing system from any significant scaling. The Owners may choose to install individual water softener systems to treat the hard water if it becomes an issue. Reported values of Calcium and Magnesium, 51.4 mg/L and 31.8 mg/L, respectively, exceed the recommended values of 31 mg/L and 19 mg/L, respectively in the Garfield County Water Treatment Decision Guide. Being secondary water quality parameters, treatment is not required. No taste or odor Ascendigo Adventure Camp 15 Preliminary Engineering Report issues are anticipated with a total dissolved solids (TDS) value below the recommended 500 mg/L, indicating good water quality for domestic consumption. Uranium and Gross Alpha are both detected in the groundwater. Both levels are below 50-percent of the EPA and CDPHE MCLs. Being 50-percent below the MCL, could qualify the camp for reduced monitoring with CDPHE. Even if not required by CDPHE, the camp plans to sample for these parameters once a year to monitor levels and ensure they are not increasing. The only water treatment onsite will be groundwater disinfection. Water will be disinfected using liquid sodium hypochlorite and a flow paced metering pump. Liquid chlorine is injected upstream of water entering the storage tank. Since the water system is not currently classified as a public water system, regular chlorination is not required. Once it is determined that system will begin to serve more than 25 persons per day for more than the 60 of their busiest days of the year, the system will begin the CDPHE permit process. The system will be designed, permitted, and constructed according to the CDPHE Design Criteria. 3.2.1 Domestic Water Demands The campground water system will serve all camp facility buildings including the base camp dining hall, camper and staff lodging, activity barn, guest house, caretaker house, maintenance barn, and equestrian structure. Potable water from the Levitt Wells will also be used to meet limited outdoor irrigation and stock watering demands as described in the Water Supply Adequacy Report in Appendix M. Domestic water will serve eight buildings on the parcel. Each building will have a water meter to verify estimated water demands. The maximum instantaneous demand was calculated for each structure using the Plumbing Fixture Unit Method as listed below. The maximum daily water demand was determined using wastewater demands Metcalf and Eddy Wastewater Engineering 2014 Edition, Table 3-5 Typical Wastewater Flowrates from Recreational Facilities and assuming a 15% consumptive loss between drinking water and wastewater. The maximum and instantaneous indoor water demand breakdown for the site is as follows: • Base Camp Dining Hall and Administrative Building o Maximum Daily Demand = 2120 gpd o Max. Instantaneous Demand = 35 gpm • Activity Barn o Maximum Daily Demand = 545 gpd o Max. Instantaneous Demand = 18 gpm • Camper Lodging o Maximum Daily Demand = 1160 gpd o Max. Instantaneous Demand = 26 gpm • Staff Lodging o Maximum Daily Demand = 2190 gpd o Max. Instantaneous Demand = 41 gpm • Guest Cabin o Maximum Daily Demand = 530 gpd o Max. Instantaneous Demand = 24 gpm Ascendigo Adventure Camp 16 Preliminary Engineering Report • Equestrian Center o Maximum Daily Demand = 35 gpd o Max. Instantaneous Demand = 17 gpm • Maintenance Barn o Maximum Daily Demand = 15 gpd o Max. Instantaneous Demand = 3 gpm • Caretaker Houses o Maximum Daily Demand = 880 gpd o Max. Instantaneous Demand = 24 gpm The maximum indoor daily demand is approximately 7,475 gpd. The storage tank is an existing 47 ft.-8 in. tank, with a total of height of 16 ft.- 0 in., 1 ft.- 0 in. freeboard, and approximate storage volume of 200,000 gallons. The storage tank provides minimum required fire flow storage of 120,000 gallons (needs to be finalized with building type and size), and over 10 days of average daily indoor demand storage. To determine a maximum instantaneous system demand, it was assumed 75-percent of all fixtures located on the parcel were operating at the same time, which results in a flow of 141 gpm. This demand can be met by using the 200,000-gallon storage tank on site, which gravity feeds each structure. Domestic booster pumps in each building will supply the required minimum pressure and flows to all plumbing fixtures in each building. All indoor domestic water will be directed to On-Site Wastewater Treatment Systems (OWTS). 3.3 Raw Water Supply Raw water for the lot comes from two different sources. The sources are conveyed via the Whitecloud/Levitt Trust Pipeline to the property and are discharged into a small existing pond. The pipeline conveys 251 Class A Shares from Cattle Creek, which runs from Spring Runoff to late June/early July depending upon the year. At the beginning of irrigation season, Class A shares deliver 1 cfs to the site. After Class A shares end, Class B shares from Spring Park Reservoir begin for approximately 16 days. Class B conveys 2.56 cfs to the property. The property also owns 3 of the 13 taps from Antonides Well, but does not have a BWCD Contract to utilize their taps. Multiple options exist for expanding irrigation water supply, which Ascendigo is currently evaluating. More details on those options are discussed in the Water Supply Adequacy report in Appendix M. The project will use the raw water from the Whitecloud/Levitt Trust Pipeline as the source to fill the three proposed ponds using the existing private lateral on the property. This piped lateral is called the Fender lateral. Since the irrigation lateral is private and only benefits the Ascendigo property an easement is not required. No stormwater is being directed to the lateral since it is piped and buried and no impacts are proposed. The owner of the irrigation ditch, which feeds the Fender lateral, is the Missouri Heights-Mountain Meadows Irrigation Company. There are no impacts to the existing ditch. The registered agent is Craig Corona with a mailing address of 1802 County Road 10, Carbondale, CO 81623-9626. Ascendigo Adventure Camp 17 Preliminary Engineering Report 3.4 Fire Protection Water Supply RFE met with Bill Gavette of the Carbondale and Rural Fire Protection District (CRFPD) several times to discuss fire protection for the development. The basecamp, activity barn, and camper and staff lodging, will likely require fire sprinkler systems depending on the building construction type. The equestrian center, maintenance barn, and hay barn are defined as Group U structures per the 2015 International Fire Code and will not require a fire sprinkler system. Fire hydrants are required for fire protection of all structures on site. Hydrants are strategically located throughout the property such that two fire hydrants are within 400 ft of each building. These locations provide the CRFPD the ability to fight fire at each structure with two hydrants. Due to the size and layout of the property, there are large distances between buildings, which contain no structures. In those instances, some hydrants are located more than 500 ft apart from each other. These proposed hydrant locations were discussed with CRFPD as being acceptable given their locations and still provide CRFPD the ability to fight the fire with two hydrants per structure. Pressure calculations, and preliminary hydrant locations are shown in Appendix O. The potable water storage tank will supply water for the building sprinkler systems and for fire protection. The sprinkler system for each building will be modeled and designed by a certified fire sprinkler system designer in compliance with NFPA Code. Seven pressurized fire hydrants are being provided to help protect the structures on site. Two hydrants located closest to the water storage tank do not have 20 psi residual pressure at required fire flows. These hydrants were discussed and approved by CRFPD since there is positive pressure available, and CRFPD can pump from both hydrants as necessary to provide required fire flow. Most occupied buildings (not including Group U Structures such as barns, etc.) will be sprinkled which reduces the amount of required fire flow and storage on site. The potable water tank is approximately 200,000 gallons in size and can provide the required minimum 120,000 gallons (1000 gpm for 120 minutes) of water needed to fight fires from hydrants. 3.5 Wastewater Treatment 3.5.1 Onsite Wastewater Treatment System (OWTS) All of the water used at the property is directed to the OWTSs for treatment. Six septic fields will be installed, three on the Harmony parcel and three on the Whitecloud parcel, to mitigate the development’s wastewater. They will be designed in accordance with the Colorado Department of Public Health and Environment’s Regulation 43 and Garfield County regulations. The preliminary septic fields are spaced and located on separate parcels to comply with these regulations. As stated in Section 2.1 of this report, HP Geotech and CBO performed a geotechnical investigation of the property. Soil profile information for the entire site (1995 HP Geotech Report), one specific lot (2008 HP Geotech Report), and Lots 4 and 8 (CBO report) was collected and analyzed. Soil profile information is attached in Appendices C, D, and G. These three investigations showed similar results of the different areas sampled. The soil type was determined to be Soil Type 2 with a long-term acceptance rate (LTAR) of 0.6. Soil type and LTAR will be confirmed for the entire site during the design phase of the project with a minimum of two test pits at each proposed septic field site. If additional field tests indicate varying Ascendigo Adventure Camp 18 Preliminary Engineering Report LTAR values at different sites throughout the property, the Soil Treatment Area (STA) will be adjusted accordingly. Septic tanks will be used to bring the effluent to Treatment Level 1 (TL1). Quick 4 Plus infiltration chambers will be utilized either with a gravity or pressure dosed system (to be determined on a case-by- case basis). The minimum septic tank size was determined using section 43.9-B1-a Design Criteria and Components, Septic Tanks, Sizing Requirements, Table 9-1 within the Garfield County On-site Wastewater Treatment System Regulations. Minimum septic tank sizing requires a 48-hour detention time for the average daily flow in order to bring the effluent to Treatment Level 1 (TL1) before it is pumped to the STA. The required STA and setbacks will be determined by Section 43.10 and 43.7, respectively, of the Garfield County On-site Wastewater Treatment System Regulations. The approximate layouts of each OWTS field can be found on the plans. For a majority of the OWTS systems, wastewater flows were estimated for each system using Metcalf and Eddy Wastewater Engineering Treatment and Reuse 2014 Edition, Table 3-5 Typical Wastewater Flowrates from Recreational Facilities. For all typical single-family residences Garfield County OWTS Regulations were used to calculate wastewater flows. Wastewater system flow calculations are included in Appendix P. 3.5.2 System A - Base Camp Septic Field The System A septic field treats the wastewater from both Base Camp buildings, which includes a dining hall and administrative building. The dining hall has several restrooms and a kitchen for preparing meals for campers, staff, and visitors. Only breakfast and dinner will be served in the dining hall. The administrative building has several restrooms for full time employees. − Dining: 100 persons x 15.9 gpd = 1,590 gpd − Restroom Usage: 38 persons x 3 gpd = 113 gpd − Permanent Staff: 10 persons x 10 gpd = 100 gpd TOTAL Wastewater Flowrates for Base Camp = 1,803 gpd OWTS System Design Flow = 2,000 gpd The system is sized for 2,000 gallons per day to help ensure the longevity of the septic field. The minimum tank size for this system is 4,000 gallons. One single compartment 2,000-gallon tank will be connected to another 2,000-gallon two compartment tank. The first tank will hold no less than half of the required effective volume per Regulation 43 Section 43.9.B.4. Using the design flow of 2,000 gallons per day it was determined that the STA is approximately 2,333 square feet. This field will require a minimum of 200 Quick 4 Plus infiltrators. They will be configured in a trench formation of 10 rows of 20 infiltrators each. 3.5.3 System B - Activity Barn Septic Field The System B septic field will treat wastewater from the gym activity barn, which has several restrooms and showers in the building. − Restroom Usage: 50 people x 3 gpd =150 gallons per day Ascendigo Adventure Camp 19 Preliminary Engineering Report − Shower Usage: 25 persons x 12.5 gpd = 313 gallons per day TOTAL Wastewater Flowrates for Activity Barn = 463 gpd OWTS System Design Flow = 750 gpd The system is sized for 750 gallons per day to help ensure the longevity of the septic field. The minimum tank size for this system is 1,500 gallons. A two-chamber 1,500-gallon precast concrete tank shall be installed. The first chamber will hold no less than half of the required effective volume per Regulation 43 Section 43.9.B.4. Using the design flow of 750 gallons per day it was determined that the STA is approximately 1,050 square feet. This field will require a minimum of 88 Quick 4 Plus infiltrators. They will be configured in a trench formation of four rows of 22 infiltrators each. 3.5.4 System C - Camper Lodging Septic Field The Camper Lodging septic field will treat wastewater from the camper lodge. The lodge will have showers restrooms in a centralized bath facility. − 24 Campers x 38 gpd = 912 gallons per day − 2 On-Duty Staff x 38 gpd = 76 gpd TOTAL Wastewater Flowrates for Camper Lodging = 988 gpd OWTS System Design Flow = 1,250 gpd The system was sized for 1,250 gallons per day to help ensure longevity of the septic field. The minimum tank size for this system is 2,500 gallons. One single compartment 1,250-gallon tank will be connected to a two-compartment 1,250-gallon tank. The first chamber will hold no less than half of the required effective volume per Regulation 43 Section 43.9.B.4. Using the design flow of 1,250 gallons per day it was determined that the STA is approximately 1,458 square feet. This field will require a minimum of 126 Quick 4 Plus infiltrators. They will be configured in a trench formation of six rows of 21 infiltrators each. 3.5.5 Staff Lodging Septic Field (System D) The Staff Lodging septic field will treat water from the Staff Lodge. The Staff Lodge can house up to 48 staff and will have a centralized bathroom and small kitchen area. − 49 staff x 38 gpd = 1,862 gallons per day TOTAL Wastewater Flowrates for Camper Lodging = 1,862 gpd OWTS System Design Flow = 2,000 gpd The system will be sized for 2,000 gallons per day to help ensure the longevity of the septic field. The minimum tank size for this system is 4,000 gallons. One single compartment 2,000-gallon tank will be connected to another 2,000-gallon two compartment tank. Ascendigo Adventure Camp 20 Preliminary Engineering Report Using the design flow of 2,000 gallons per day it was determined that the STA is approximately 2,333 square feet. This field will require a minimum of 200 Quick 4 Plus infiltrators. They will be configured in a trench formation of eight rows of 25 infiltrators each. 3.5.6 Guest House Septic Field (System E) The guest house septic field will treat wastewater generated by the guest house on site. The guest house is treated a 3-bedroom single family residential home. For all residential homes, Garfield County regulations require wastewater flows to be calculated using 75 gpd and 2 people per bedroom. − 3 bedrooms x 2 people per bedroom x 75 gpd = 450 gallons per day TOTAL Wastewater Flowrates for Camper Lodging = 450 gpd OWTS System Design Flow = 500 gpd The system will be sized for 500 gallons per day to help ensure the longevity of the septic field. The minimum tank size for this system is 1,000 gallons. A two chamber 1,000-gallon precast concrete tank will be installed. The first chamber will hold no less than half of the required effective volume per Regulation 43 Section 43.9.B.4. 3.5.7 Caretaker Residence, Maintenance Barn, and Equestrian Building Septic Field (System F) System F septic field will treat wastewater generated by the caretaker residence, maintenance barn, and equestrian building. The caretaker residence consists of one 2-bedroom single family residence and one 3-bedroom single family residence. For all residential homes, Garfield County regulations require wastewater flows to be calculated using 75 gpd and 2 people per bedroom for homes having three bedrooms. Caretaker Residences − Unit 1: 3 bedrooms x 2 people per bedroom x 75 gpd = 450 gallons per day − Unit 2: 2 bedrooms x 2 people per bedroom x 75 gpd = 300 gallons per day TOTAL Wastewater Flowrates for Caretaker Residences = 750 gpd Maintenance Barn − Restroom Usage: 2 employees x 3 gpd = 6 gpd − Sink: 2 uses x 3 gpd = 6 TOTAL Wastewater Flowrates for Maintenance Barn = 12 gpd Equestrian Building − Restroom Usage: 10 people x 3 gpd = 30 gpd TOTAL Wastewater Flowrates for Equestrian Center = 60 gpd TOTAL Wastewater Flowrates for System F = 792 gpd OWTS System Design Flow = 1,000 gpd Ascendigo Adventure Camp 21 Preliminary Engineering Report The system will be sized for 1,000 gallons per day to help ensure the longevity of the septic field. The minimum tank size for this system is 2,000 gallons. A two-chamber 2,000-gallon precast concrete tank shall be installed. The first chamber will hold no less than half of the required effective volume per Regulation 43 Section 43.9.B.4. Using the design flow of 1,000 gallons per day it was determined that the STA is approximately 1,167 square feet. This field will require a minimum of 102 Quick 4 Plus infiltrators. They will be configured in a trench formation of six rows of 17 infiltrators each. 3.6 Electric Service Holy Cross Energy is providing electrical service to the site. There is existing underground single phase on the Whitecloud parcel. There is adequate single-phase power supply to provide single phase to the entire site, which would include an extension of existing underground from Harmony Lane into the upper Harmony Heights portion of the site. If there is a need for three phase power to the site, Holy Cross can provide overhead three phase power to the site from existing three-phase transmission line located on Fender Lane. All infrastructure for the three-phase extension would need to be installed at cost to the Owner. Please see the will serve letter from Holy Cross Energy in Appendix Q. 3.7 Cable Comcast confirmed there is existing infrastructure near the site to extend their service to and throughout the site. There are several options for cost sharing and Comcast is conducting a survey and cost analysis to be shared with the Owner for discussion. Please find the attached Will Serve letter from Comcast in Appendix Q. 3.8 Telephone There is existing Century Link telephone service on the Whitecloud parcel. The telephone conduit terminates at edge of the Whitecloud Ridge and Harmony Heights properties. Telephone conduit for the upper Harmony Heights portion of the site will be extended from either the existing termination at the Whitecloud property line, or from Harmony Lane, at cost to the Owner. Please see the attached Will Serve letter from Century Link in Appendix Q. 3.9 Natural Gas There is an existing Black Hills energy natural gas line that extends through both the Harmony Heights and Whitecloud properties. The existing line can serve all of the structures on the Whiteloud parcel. Black Hills Energy would need to upgrade the existing service line to support the estimated load of the buildings on the Harmony parcel. Gas service for the Harmony buildings is not anticipated at this time. Please see the will serve letter from Black Hills Energy in Appendix Q. Due to the high-cost estimate provided by Black Hills Energy to increase the natural gas line size, Ascendigo is also evaluating the option of using solar panels for electric heating in all buildings instead. Appendix A Parcel Exhibit EX5PARCELSROARING FORK ENGINEERING 592 HIGHWAY 133 CARBONDALE COLORADO, 81623 PH: (970)340-4130 F:(866)876-5873CHECKED BY:#DESCRIPTION DATE DRAWN BYCONSTRUCTION DRAWN BY:JOB #:ASCENDIGO ADVENTURE CAMP CARBONDALE, CO 81623 2020-36NOT FORVJTAMR1 PRELIMINARY DRAWINGS 12.15.2020 VJT 2 LAND USE 01.15.2021 VJT Appendix B Site Plan KITCHEN F P KITCH. LOUNGE MASTER BEDROOM LIVING DINING W W W 0 50 100 200 60'-0" Utility , Irrigation and Drainage Easement 60'-0" Roadway & Utility Easement Whitecloud Road (60'-0" Roadway and Utility Easement) Lot 1Lot 2 Lot 3 Lot 5 Lot 6Lot 7 Lot 8 Lot 9 Lot 10 Lot 11 Lot 12 Lot 13 Harmony Heights Parcel D (41.29 Acres)30'-0" Drainage Easement Harmony Road(60'-0" Roadway and Utility Easement)30'-0" Roadway & Utility Easement Windriver Road (60'-0" Roadway and Utility Easement) Water Storage Tank Easement (100'-0" Diameter) Existing Water Storage Tank (With Chlorination System.) 8" Water Line Antonides Well 40'-0" Utility And Access Easement Existing Wells 20'-0" Irrigation Ditch Easement Sunset Lane Sunrise Lane Levitt Lane (22'-0" Paved Road, 60'-0" Roadway and Utility Easement.) 30'-0" Utility & Access Easement 30'-0" Access Easement Proposed Pond Base Camp (One Story, 6,730 sq. ft. Building. Administrative and Dining Uses.)70507060707070407030708070907100 Activity Barn (7,200 sq.ft. Building. Indoor Recreation Uses w/ Storage Below.) 7100 7090 7080 7070 706070507010 702070006990698069706960 6950694 06930 6930 Base Camp Over Flow Parking (15 space grass parking lot )69206910Caretaker's Residence (Finish Floor Elev = 6921.0' Garage Slab Elev = 6920.5' ) Maintenance Barn (1,500 sq.ft.)7040703070207010Whitecloud Road (22'-0" Paved Road 60'-0" Roadway and Utility Easement.) Leach Field Gathering Space Proposed Entrance (Separate 16'-0" entrance and exit merging to 22'-0" paved road.) Camper Lodging (6,040 square feet. Maximum Occupancy = 26 Finish Floor Elev. = 7048.5') Guest Cabin (1,620 Square Feet.)6900Cabin Ruins Gathering Space Leach Field Lot 4 Whitecloud Ridge (79.5 Acres) Harmony Heights Parcel C (6 Acres)Leach FieldStaff Lodging (8,920 square feet. Maximum Occupancy = 48) Proposed 22'-0" Asphalt Road (66,000 sq. ft.) Existing Houses Existing Houses Pasture (Water and Loafing Sheds. 5 Acres) 71 1 07110 69206900 69106920 694069306940Proposed Pond (Waterline elev. = 7067.0') 6937.0'+ Equestrian Center (1,000 sq. ft. Single Story Building. Finish Floor Elev = 6941.5')363834+7088.5' 7075.5'+ +T.O.Bank = 7069.0' +7096.0' +7093.0' 7052.5'+Leach Field8886 9090 709 0 71007080 7070 7060 7050 7040 7030 Dry Lot ( Horses) Dry Lot ( Horses) Dry Lot (Minis / Goats) Pasture (Water and Loafing Sheds. 3.6 Acres) +7089.0'929 4 96 06 9 8 0 0 020406060608Playing Field (100'-0" x 200'-0") Manure Hay Barn (800 sq.ft.)90927 0 1 0 7 0 0 0 7020 6 9 9 0 +7008.25' 7020.0'+ 70 1 0 7010 7020 7000 060 8 1 0 12 14 16 18 20 0404+L.P. =7003.0' 02 02 00 14 16 18 20 98 06 6990 9800020 4 0 6 0 8 7075.6'+ 90 80 70 605002 Terrace 4 0 30 00 989 8 96Service Entrance Proposed 6'-0" Berm Proposed Berm 106980 +6987.0'697069806 9 8 0 6 9 7 069806 9 5 0 6 9 6 0 86 84 9294Base Camp Parking (20 space parking lot )88868482 08 06 04 Existing 22'-0" Asphalt Road Arena (100' x 200') Round Pen 30'-0" Utility &Access EasementBWCD Area B BWCD Area A BWCD Area B BWCD Area A 0608Storage Trash Trash Loafing Shed Proposed Gate (Limited Access.) 00 02 04 06 02 1 0 Entry Feature (4'-0" split rail fence connected to a 4'-0" stone wall with ranch name.) 68 84 82 +91.0' +H.P. 7107.5' +L.P. 71075.5' +7111.0' +7107.0' +7110.5' Note: The proposed contours shown on this plan are conceptual only. For actual grading information see Civil Engineer's drawings. Proposed Landsdcape Screening Proposed Landsdcape Screening Conceptual Site Plan Ascendigo Ranch Garfield County, Colorado Date: December 4, 2020 Scale: 1" = 100'- 0"North Appendix C HP Geotechnical Reports (1995 and 2008) Appendix D Kumar Geotechnical Report (2020) 5020 County Road 154 Glenwood Springs, CO 81601 phone: (970) 945-7988 fax: (970) 945-8454 email: kaglenwood@kumarusa.com www.kumarusa.com Office Locations: Denver (HQ), Parker, Colorado Springs, Fort Collins, Glenwood Springs, and Summit County, Colorado PRELIMINARY GEOLOGIC AND GEOTECHNICAL STUDY FOR PLANNING AND LAND USE REVIEW PROPOSED ASCENDIGO RANCH WHITE CLOUD RIDGE AND HARMONY HEIGHTS WIND RIVER ROAD GARFIELD COUNTY, COLORADO PROJECT NO. 20-7-716 DECEMBER 15, 2020 PREPARED FOR: ASCINDIGO AUTISM SERVICES ATTN: DAN RICHARDSON 818 INDUSTRIAL PLACE CARBONDALE, COLORADO, 81623 drichardson@ascendigo.org Kumar & Associates, Inc. ® Project No. 20-7-716 TABLE OF CONTENTS PURPOSE AND SCOPE OF STUDY ........................................................................... - 1 - PROPOSED DEVELOPMENT...................................................................................... - 1 - SITE CONDITIONS ....................................................................................................... - 1 - GEOLOGIC SETTING .................................................................................................. - 2 - GEOLOGIC ASSESSMENT.......................................................................................... - 4 - PRELIMINARY DESIGN RECOMMENDATIONS .................................................... - 6 - FOUNDATIONS ........................................................................................................ - 6 - FLOOR SLABS .......................................................................................................... - 6 - UNDERDRAIN SYSTEM ......................................................................................... - 7 - SITE GRADING ......................................................................................................... - 7 - SURFACE DRAINAGE ............................................................................................. - 7 - LIMITATIONS ............................................................................................................... - 8 - REFERENCES ............................................................................................................... - 9 - FIGURE 1 – PROPOSED SITE PLAN FIGURE 2 – PROJECT AREA GEOLOGY MAP Kumar & Associates, Inc. ® Project No. 20-7-716 PURPOSE AND SCOPE OF STUDY This report presents the results of a geotechnical and geologic hazards review for the proposed Ascendigo Ranch to be located in parts of Whitecloud Ridge and Harmony Heights subdivisions, Garfield County, Colorado. The project site is shown on Figure 1. The purpose of the study was to evaluate the geologic conditions and their impact on the project. The study was conducted in accordance with our agreement for professional services to Ascendigo Autism Services, dated November 19, 2020. A field exploration program consisting of a reconnaissance was conducted on December 4, 2020 to obtain information on the site. This report summarizes the data obtained during this study and presents our conclusions and recommendations based on the proposed development and our site reconnaissance. PROPOSED DEVELOPMENT The proposed development will consist of a Base Camp building, activity barn, camper lodging building, staff lodging building, guest cabin, equestrian center building, hay barn, maintenance barn, and caretakers residence, various loafing sheds, a playing field, a pond, and various parking areas, as shown on Figure 1. We assume the buildings will be typical of the area and could have partial or full basement levels. The development will be serviced with municipal water and individual septic disposal systems. If development plans are significantly different from those described, we should be notified to re-evaluate the findings and recommendations presented in this report. SITE CONDITIONS The proposed 127 acre Ascendigo Ranch is in the Missouri Heights area which is a rolling upland in eastern Garfield County. The property is in parts of Sec. 28, 29, 32, and 33, T. 7 S., R. - 2 - Kumar & Associates, Inc. ® Project No. 20-7-716 87 W. The topography in the area is indicated by the contour lines shown on Fig. 1. Most of the proposed development area is on the Missouri Heights upland and lies about 400 feet above the Roaring Fork River valley which borders the property on the south. Portions of the property extend on to the steep, south and west facing escarpment which forms the river valley side in this area. Slopes on the upland are moderate, in the range of 5 to 20%. Slopes along the bordering escarpment are steep and average about 60%. No development is planned in the steep escarpment areas. Major drainages do not cross through the property. Several small ephemeral, first order drainages head on the escarpment that borders the upland. The upland area has been irrigated and the ditches are still present. In the non-irrigated areas along the escarpment and in a few places on the upland vegetation is sage, other brush and junipers. The property was mostly undeveloped at the time of our site reconnaissance on December 4, 2020. There is an existing water storage tank in the northeast corner of the proposed development. Whitecloud Road has been constructed (asphalt pavement surface) and there are several utility stub-outs located along the road. There is a rough graded road that follows the general alignment of the proposed Levitt Lane. Several old ranches and new residences are present in the adjacent parts of the upland. GEOLOGIC SETTING The rolling upland on the property is part of a large basalt plateau to the north of the Roaring Fork River valley. The plateau is on the southern margin of the White River Uplift which is a broad, regional uplift formed during the Laramide Orogeny about 40 to 70 million years ago. The northwest trending axis of the Roaring Fork Syncline, a secondary Laramide-age structure, projects through the project area. Near surface rock formations below the plateau and property are late Miocene-age basalt flows and interlayered tuffs and volcanic conglomerates. The basalt flows overlie the Pennsylvanian-age Eagle Valley Evaporite. Surficial soils are loess and colluvium. The principle geologic features on the property are shown on Fig. l. LOESS The surface of the upland is underlain by loess. This wind deposited soil is a reddish-brown silt and clay with some fine sand. At depth, the loess grades into weathered basalt. - 3 - Kumar & Associates, Inc. ® Project No. 20-7-716 COLLUVIUM Colluvium (Qc) usually covers the rock formations on the escarpments which borders the upland. The colluvium consists of angular to rounded hard rocks, which ranges from gravel to boulder- size, in a silty to clayey sand matrix. In most areas the colluvium probably does not exceed 15 feet thick. LANDSLIDE An area of irregular topography on the escarpment in the southwestern part of the property appears to be associated with a deep, rotational slump landslide complex (Qls). The landslide complex has a surface area of about 7 acres. It appears that the landslide is in the colluvium, basalt, and underlying Eagle Valley Evaporite. The depth of the landslide is uncertain, but it could be 50 to 100 feet deep. The landslide appears to be dormant. BASALT FLOWS Erosionally resistant basalt flows and interstratified sedimentary rock (Tb) are present below the upland, and crop out locally along the escarpment. The weathered basalt consists of gravel to boulder-size basalt fragments in a sandy silt matrix. It is likely that weathered basalt which grades at depth to sound basalt will be encountered at typical basement depth below the upland on the property. The basalt flows erupted about 8 million years ago and covered much of the area before the Roaring Fork River and its local tributaries had down cut to their present levels. The basalt is made up of individual flow sheets which vary from 5 to 200 feet thick (Larson and Others, 1975). Judging from the outcrop pattern on the escarpment, basalt flows and possibly interstratified sedimentary rock at the subdivision may be in the range of 50 to 200 feet thick. The basalt is a very hard, dense rock which is usually cut by a complex joint system. The interstratified tuffs and conglomerates are usually non-cemented but firm. EAGLE VALLEY EVAPORITE The Eagle Valley Evaporite crops out locally in gullies below the basalt flows along the steep escarpment which borders the upland on the south and west. The Eagle Valley Evaporite is a gray and tan, gypsum and anhydrite with interbedded siltstone, claystone, and dolomite. The gypsum and anhydrite are cemented but soluble in fresh water. The siltstone varies from - 4 - Kumar & Associates, Inc. ® Project No. 20-7-716 cemented and hard to non-cemented but firm. The dolomite is cemented and hard. The bedding structure at most places is convoluted because of flow deformation in the plastic gypsum and anhydrite. Joints are common in the siltstone and dolomite which gives these rocks a secondary blocky structure. The gypsum and anhydrite are massive because of their plasticity and they do not contain joints. FAULTS Major faults have not been mapped on the property (Tweto and Others, 1978). The Castle Creek fault zone is located along the lower western slope of Basalt Mountain about one mile to the east of the eastern property boundary. The Castle Creek fault zone is not considered to be a potentially active geologic structure (Kirkham and Rogers, 1981). GEOLOGIC ASSESSMENT It should be possible to construct the proposed development without encountering unusual problems associated with the site geology if the steeply sloping areas are avoided, as planned. There are several geologic conditions which should be considered in development planning as discussed below. Preliminary geotechnical engineering recommendations pertaining to foundations, roads, and site grading are presented in the Preliminary Design Recommendations section of this report. LANDSLIDES AND SLOPE INSTABILITY A landslide complex is located on the escarpment in the southern parts of Lots 8 and 9. This area and the adjacent steep escarpment should be considered high risk areas for potential slope instability. The steep escarpment is not recommended for building sites or other construction which could significantly disturb the slopes. It is recommended that building sites and other construction which requires cuts and fills greater than about 5 feet deep not be considered on slopes steeper than 30%, unless further studies show that the construction will not adversely impact the slope stability. A sharp topographic break occurs between the escarpment and upland at about the contact between Map Units Tb and Pee. We recommend that structures be set back - 5 - Kumar & Associates, Inc. ® Project No. 20-7-716 at least 25 feet from this topographic break unless further studies show that it is acceptable to build on the steeper slopes. EARTHQUAKES The project site could experience moderately strong earthquake-related ground shaking of Modified Mercalli Intensity VI during a reasonable service life for residential construction, but the probability for stronger ground shaking is low. Intensity VI ground shaking is felt by most people and can cause general alarm, but results in negligible damage to structures of good design and construction. All structures on the property should be designed to withstand moderately strong ground shaking with little or no damage and not to collapse under stronger ground shaking. The region is in the Uniform Building Code Seismic Risk Zone 1. Based on our current understanding of the earthquake hazard in this part of Colorado, we see no reason to increase the commonly accepted seismic risk zone for the area. GYPSUM DEFORMATION Unusual topographic features were not observed on the property, but linear topographic escarpments are sometimes present elsewhere on the uplands to the north. These unusual topographic features may be associated with flowage, expansion and solution of the gypsum in the underlying Eagle Valley Evaporite since the basalt flows were extruded about 8 million years ago. It is uncertain if this deformation is still an active geologic process or if deformation has stopped. To our knowledge, there has not been problems with gypsum deformation in this area or in similar areas underlain by the Eagle Valley Evaporite. If deformation is still active, it is likely occurring at very slow rates and should not be a potential hazard to development of the project site. RADIOACTIVE GASSES The project site is not located on geologic deposits that would be expected to have high concentration of radioactive minerals. However, there is a potential that radon gas could be present in the area. Radon is a radioactive gas that forms from the natural breakdown of uranium in soil, rock, and water. Radon tends to accumulate in poorly ventilated areas below ground level; however, radon may accumulate inside any above or below-grade construction. According - 6 - Kumar & Associates, Inc. ® Project No. 20-7-716 to the EPA, radon levels in buildings can be reduced by several methods, including pressurization of the building using a heating, ventilation and air-conditioning system, sealing of cracks in foundation walls and floor slabs which may allow entry of radon, and using active soil depressurization (ASD) systems. It is difficult to assess future radon gas concentrations in buildings before the buildings are constructed. Testing for radon gas levels could be done when the buildings and other occupied structures have been completed. New buildings are often designed with provisions for ventilation of lower enclosed areas should post construction testing show unacceptable radon gas concentration. PRELIMINARY DESIGN RECOMMENDATIONS The conclusions and recommendations presented below are based on the proposed development, our site reconnaissance, and our experience in the area. The recommendations are suitable for planning and preliminary design but site specific studies should be conducted for individual building development and site grading improvements. FOUNDATIONS Bearing conditions will vary depending on the specific location of the building on the property. Based on the nature of the proposed construction spread footings bearing on the natural subsoils should be suitable at the building sites. We expect the footings can be sized for an allowable bearing pressure in the range of 2,000 psf to 3,000 psf. Nested boulders and loose matrix soils may need treatment such as enlarging footings or placing compacted fill or concrete backfill. Foundation walls should be designed to span local anomalies and to resist lateral earth loadings when acting as retaining structures. Below grade areas and retaining walls should be protected from wetting and hydrostatic loading by use of an underdrain system. The footings should have a minimum depth of 36 inches for frost protection. FLOOR SLABS Slab-on-grade construction should be feasible for bearing on the natural soils. There could be some post construction slab movement at sites with collapsible matrix or expansive clays. To reduce the effects of some differential movement, floor slabs should be separated from all - 7 - Kumar & Associates, Inc. ® Project No. 20-7-716 bearing walls and columns with expansion joints. Floor slab control joints should be used to reduce damage due to shrinkage cracking. A minimum 4 inch thick layer of free-draining gravel should underlie basement level slabs to facilitate drainage. UNDERDRAIN SYSTEM Although free water is generally deep in the area and expected to be below proposed excavation levels, it has been our experience in mountainous areas that local perched groundwater can develop during times of heavy precipitation or seasonal runoff. An underdrain system should be provided to protect below-grade construction, such as retaining walls, crawlspace and basement areas from wetting and hydrostatic pressure buildup. The drains should consist of drainpipe surrounded above the invert level with free-draining granular material. The drain should consist of 4 inch minimum diameter perforated rigid PVC pipe placed to protect each level of excavation and sloped at a minimum 1% to a suitable gravity outlet. SITE GRADING The risk of construction-induced slope instability at the site appears low provided the buildings are located in the less steep part of the property as planned and cut and fill depths are limited. Cut depths for the building pads and driveway access should not exceed about 10 to 12 feet. Fills should be limited to about 10 feet deep, especially where they encroach steep downhill sloping areas. Structural fills should be compacted to at least 95% of the maximum standard Proctor density near optimum moisture content. Prior to fill placement, the subgrade should be carefully prepared by removing all vegetation and topsoil. The fill should be benched into the portions of the hillside exceeding 20% grade. We expect the on-site soils excluding oversized rock and topsoil can be used in embankment fills and permanent unretained cut and fill slopes should be graded at 2 horizontal to 1 vertical or flatter. SURFACE DRAINAGE The grading plan for the development should consider runoff from steep uphill slopes through the project and at individual sites. Water should not be allowed to pond which could impact slope stability and foundations. To limit infiltration into the bearing soils next to buildings, exterior backfill should be well compacted and have a positive slope away from the building for - 9 - Kumar & Associates, Inc. ® Project No. 20-7-716 REFERENCES Kirkham, R. M. and Rogers, W.P., 1981, Earthquake Potential in Colorado -A Preliminary Evaluation: Colorado Geological Survey Bulletin 43. Kirkham, R.M., and Widmann, B.L., 2008, Geologic Map of the Carbondale Quadrangle, Garfield County, Colorado: Colorado Geological Survey, Map Series MS-36. Kirkham, R.M., Widmann, B.L., and Streufert, R.K., 1998, Geologic map of the Leon quadrangle, Eagle and Garfield Counties, Colorado: Colorado Geological Survey, Open- File Report OF-98-3 Larson, E.E., and Others, 1975, Late Cenozoic Basic Volcanism in Northwestern Colorado and Its Implications Concerning Tectonism and the Origin of the Colorado River System, .in, Curtis, B.F., Editor, Cenozoic History of the Southern Rocky Mountains: Geological Society of America Memoir 144. Tweto, 0., 1978, Geology Map of the Leadville l°X 2° Quadrangle, Northwestern Colorado: U.S. Geological Survey Map 1-999. Kumar & Associates Kumar & Associates Appendix E Site Slope Exhibit EX1EAST SITE SLOPESROARING FORK ENGINEERING 592 HIGHWAY 133 CARBONDALE COLORADO, 81623 PH: (970)340-4130 F:(866)876-5873CHECKED BY:#DESCRIPTION DATE DRAWN BYCONSTRUCTION DRAWN BY:JOB #:Of C42ASCENDIGO ADVENTURE CAMP CARBONDALE, CO 81623 2020-36NOT FORVJTAMR1 PRELIMINARY DRAWINGS 12.15.2020 VJT EX2WEST SITE SLOPESROARING FORK ENGINEERING 592 HIGHWAY 133 CARBONDALE COLORADO, 81623 PH: (970)340-4130 F:(866)876-5873CHECKED BY:#DESCRIPTION DATE DRAWN BYCONSTRUCTION DRAWN BY:JOB #:Of C42ASCENDIGO ADVENTURE CAMP CARBONDALE, CO 81623 2020-36NOT FORVJTAMR1 PRELIMINARY DRAWINGS 12.15.2020 VJT Appendix F Soil Test Pit Location Exhibit EX3EAST SITE SOIL PITSROARING FORK ENGINEERING 592 HIGHWAY 133 CARBONDALE COLORADO, 81623 PH: (970)340-4130 F:(866)876-5873CHECKED BY:#DESCRIPTION DATE DRAWN BYCONSTRUCTION DRAWN BY:JOB #:Of CXASCENDIGO ADVENTURE CAMP CARBONDALE, CO 81623 2020-36NOT FORVJTAMR1 LAND USE 01.15.2021 VJT EX4WEST SITE SOIL PITSROARING FORK ENGINEERING 592 HIGHWAY 133 CARBONDALE COLORADO, 81623 PH: (970)340-4130 F:(866)876-5873CHECKED BY:#DESCRIPTION DATE DRAWN BYCONSTRUCTION DRAWN BY:JOB #:Of CXASCENDIGO ADVENTURE CAMP CARBONDALE, CO 81623 2020-36NOT FORVJTAMR1 LAND USE 01.15.2021 VJT Appendix G CBO Soil Test Report 33 Four Wheel Drive Road Carbondale, CO 81623 970.309.5259 carla.ostberg@gmail.com March 31, 2020 Project No. C1513 Pete Waaraniemi pete@janckilaconstruction.com Subsurface Investigation and Onsite Wastewater Treatment System Design 4-Bedroom Residence Lot 4, Whitecloud Ridge Subdivision 382 Whitecloud Road Garfield County, Colorado Pete, CBO Inc. performed a subsurface investigation and completed an onsite wastewater treatment system (OWTS) design for the subject residence. The 6.049-acre property is located outside of Carbondale, in an area where OWTSs are necessary. Legal Description: Section: 28 Township: 7 Range: 87 Subdivision: WHITECLOUD RIDGE SUB-DIV Lot: 4 Parcel ID: 2391-283-18-004 SITE CONDITIONS The property is currently undeveloped. A 4-bedroom, single-family residence is proposed. The residence will be served potable water from a community water system. The water line will enter the property from the north. The water line will not come within 25-feet of any OWTS component. The proposed soil treatment area (STA) location has an approximate eight percent slope to the southwest. The landscape is LL (Linear-Linear). The proposed area covered with native grasses and sage. There should be no traffic or staging of material over the future STA site to avoid compaction of soils prior to construction of the STA. SUBSURFACE The subsurface was investigated on March 17, 2020 by digging two soil profile test pit excavations (Test Pits). A visual and tactile soil analysis was completed by Carla Ostberg at the time of excavation.1 The materials encountered in Test Pit #1 consisted of dark brown topsoil to 1.5-feet, underlain by tan calcareous clay matrix to a maximum depth explored of 8.0-feet. No bedrock or groundwater was encountered. 1 Carla Ostberg holds a Certificate of Attendance and Examination from the CPOW Visual and Tactile Evaluation of Soils Training. Page 2 The materials encountered in Test Pit #2 consisted of dark brown topsoil to 2.0-feet, underlain by tan calcareous clay matrix to a maximum depth explored of 8.0-feet. No bedrock or groundwater was encountered. A tactile analysis of the soils was taken from Test Pit #1 at 3-feet below grade. Soil structure grade was moderate. The soil formed a ball and a ribbon less than 1-inch in length before breaking. Soil structure shape was loose to blocky and consistence was firm. Soil texture was both gritty and smooth. STA sizing is based on Soil Type 2. A long term acceptance rate (LTAR) of 0.6 gallons per square foot will be used to design the OWTS. Test Pit #1 Sieved sample Page 3 Test Pit #1 Test Pit #2 backfill Page 4 View of proposed STA DESIGN SPECIFICATIONS Design Calculations: Average Design Flow = 75 GPD x 2 people/bedroom x 3 Bedrooms + 75 GPD (4th bedroom) = 525 GPD LTAR = 0.6 GPD/SF 525 GPD / 0.6 GPD/SF x 1.0 (gravity trenches) x 0.7 (chambers) = 613 SF The OWTS design is based on 4-bedrooms. An average daily wastewater flow of 525 GPD will be used. For the purposes of this OWTS design, Benchmark Elevation at finished floor 6976’ 6”’ has been established as 100’. CBO Inc. should be notified of any discrepancies or problems with grade elevations of proposed components during installation of the OWTS. OWTS Component Minimum Elevation Primary Tank Inlet Invert 93.5’ (6970’) (approx. horizontal distance 30’ / min. 2% fall = min. 30.25” drop) Distribution Box 90.5’ (6967’) (approx. horizontal distance 36’ / min 1% fall = min. 4.5” drop) Infiltrative Surface (highest trench) 89.5’ (6967’) (approx. horizontal distance 10’ / min. 1% fall = min. 1.25” drop) The sewer line exiting the residence must have a double-sweep clean out and a minimum 2% grade to the septic tank. The system installation must include a 1250-gallon, two-compartment concrete septic tank with an effluent filter on the outlet tee. Risers must bring the manhole lids to grade for access. If more than one riser is added to the septic tank, an extension handle must be installed on the effluent filter. Effluent will gravity flow to a distribution box. The distribution box must be accessible from grade and must have flow equalizers, or similar product, installed on each outlet pipe in the distribution box to assure equal flow to each bed. The STA will consist four trenches, each with of 13 ‘Quick 4’ Standard Plus Infiltrator® chambers for a total of 52 chambers and 624 square feet of infiltrative area. There must be at least 4-feet of undisturbed soil between each trench, although we recommend at least 6-feet. Inspection ports must be installed at the beginning and end of each trench. Ports may be cut to grade and placed in sprinkler boxes for access. Page 5 COMPONENT SPECIFICATIONS The component manufacturers are typical of applications used by contractors and engineers in this area. CBO Inc. must approve alternative components prior to installation of the OWTS. Requests must be submitted, in writing, to our office for approval prior to installation. Component technical data sheets are available upon request. COMPONENT MANUFACTURER MODEL NO. COMMENTS Septic Tank Valley Precast Item # 1250-2CP 1250-gallon, 2- compartment concrete septic tank Tank Risers and Lids Orenco® Double-walled PVC Risers and Lids (24” diameter) Biotube Effluent Filter Orenco® 4 inch diameter, Full Size Effluent Filter and housing Distribution Box Valley Precast D-Box 8C Concrete distribution box Flow Equalizers 3049 Equalizer 4 Flow Equalizers Chambers Infiltrator® 52 ‘Quick 4’ Plus Standard Chambers The component manufacturers are typical of applications used by contractors and engineers in this area. Alternatives may be considered or recommended by contacting our office. Construction must be according to Garfield County On-Site Wastewater Treatment System Regulations, the OWTS Permit provided by Garfield County Building Department, and this design. INSTALLATION CONTRACTOR CBO Inc. expects that the installer be experienced and qualified to perform the scope of work outlined in this design. The installer must review this design thoroughly and coordinate with our office in advance of installation. Any additional conditions in this design or county permit must be completed and documented prior to final approval of the OWTS installation. Communication between the installer and this office is expected throughout the installation. INSTALLATION OBSERVATIONS CBO Inc. must view the OWTS during construction. The OWTS observation should be performed before backfill, after placement of OWTS components. Septic tanks, distribution devices, pumps, dosing siphons, and other plumbing, as applicable, must also be observed. CBO Inc. should be notified 48 hours in advance to observe the installation. In an effort to improve the accuracy of the record drawing, we request that the installer provide a sketch of the installation, including path of the sewer lines, water line installation (if applicable), septic tank location, STA location, and measurements from building corners or another fixed objects on the property. This sketch is most easily provided on Sheet W2.0 of the OWTS Design Packet. Photographs of the installation and final cover are also requested to supplement our installation documentation. Page 6 REVEGETATION REQUIREMENTS An adequate layer of good quality topsoil capable of supporting revegetation shall be placed over the entire disturbed area of the OWTS installation. A mixture of native grass seed that has good soil stabilizing characteristics (but without taproots), provides a maximum transpiration rate, and competes well with successional species. No trees or shrubs, or any vegetation requiring regular irrigation shall be placed over the STA. Until vegetation is reestablished, erosion and sediment control measures shall be implemented and maintained on site. The owner of the OWTS shall be responsible for maintaining proper vegetation cover. OPERATION INFORMATION AND MAINTENANCE The property owner shall be responsible for the operation and maintenance of each OWTS servicing the property. The property owner is responsible for maintaining service contracts for manufactured units, alternating STAs, and any other components needing maintenance. Geo-fabrics or plastics should not be used over the STA. No heavy equipment, machinery, or materials should be placed on the backfilled STA. Machines with tracks (not wheels) should be used during construction of the STA for better weight distribution. Livestock should not graze on the STA. Plumbing fixtures should be checked to ensure that no additional water is being discharged to OWTS. For example, a running toilet or leaky faucet can discharge hundreds of gallons of water a day and harm a STA. If an effluent filter or screen has been installed in the OWTS, we recommend this filter or screen be cleaned annually, or as needed. If the OWTS consists of a pressurized pump system, we recommend the laterals be flushed annually, or as needed. The homeowner should pump the septic tank every two years, or as needed gauged by measurement of solids in the tank. Garbage disposal use should be minimized, and non-biodegradable materials should not be placed into the OWTS. Grease should not be placed in household drains. Loading from a water softener should not be discharged into the OWTS. No hazardous wastes should be directed into the OWTS. Mechanical room drains should not discharge into the OWTS. The OWTS is engineered for domestic waste only. ADDITIONAL CONSTRUCTION NOTES If design includes a pump, weep holes must be installed to allow pump lines to drain to minimize risk of freezing. The pump shall have an audible and visual alarm notification in the event of excessively high water conditions and shall be connected to a control breaker separate from the high water alarm breaker and from any other control system circuits. The pump system shall have a switch so the pump can be manually operated. Excavation equipment must not drive in excavation of the STA due to the potential to compact soil. Extensions should be placed on all septic tank components to allow access to them from existing grade. Backfill over the STA must be uniform and granular with no material greater than minus 3-inch. LIMITS: The design is based on information submitted. If soil conditions encountered are different from conditions described in report, CBO Inc. should be notified. All OWTS construction must be according to the county regulations. Requirements not specified in this report must follow applicable county regulations. The contractor should have documented and demonstrated knowledge of the requirements and regulations of the county in which they are working. Licensing of Systems Contractors may be required by county regulation. Page 7 Please call with questions. Sincerely, CBO Inc. Carla Ostberg, MPH, REHS 33 Four Wheel Drive Road Carbondale, CO 81623 970.309.5259 carla.ostberg@gmail.com March 31, 2020 Project No. C1514 Pete Waaraniemi pete@janckilaconstruction.com Subsurface Investigation and Onsite Wastewater Treatment System Design 4-Bedroom Residence Lot 8, Whitecloud Ridge Subdivision 575 Whitecloud Road Garfield County, Colorado Pete, CBO Inc. performed a subsurface investigation and completed an onsite wastewater treatment system (OWTS) design for the subject residence. The 9.058-acre property is located outside of Carbondale, in an area where OWTSs are necessary. Legal Description: Section: 28 Township: 7 Range: 87 Subdivision: WHITECLOUD RIDGE SUB-DIV Lot: 8 Parcel ID: 2391-294-18-008 SITE CONDITIONS The property is currently undeveloped. A 4-bedroom, single-family residence is proposed. The residence will be served potable water from a community water system. The water line will enter the property from the north. The water line will not come within 25-feet of any OWTS component. The proposed soil treatment area (STA) location has an approximate five percent slope to the southeast. The landscape is LL (Linear-Linear) turning Convex farther to the east, beyond the STA. The proposed area covered with native grasses and sage. There should be no traffic or staging of material over the future STA site to avoid compaction of soils prior to construction of the STA. SUBSURFACE The subsurface was investigated on March 17, 2020 by digging one soil profile test pit excavation (Test Pit). Only one test pit was excavated in an effort not to disturb the proposed STA. A visual and tactile soil analysis was completed by Carla Ostberg at the time of excavation.1 The materials encountered in Test Pit #1 consisted of dark brown topsoil to 2.0-feet, underlain by tan calcareous clay matrix to a maximum depth explored of 8.0-feet. No bedrock or groundwater was encountered. 1 Carla Ostberg holds a Certificate of Attendance and Examination from the CPOW Visual and Tactile Evaluation of Soils Training. Page 2 A tactile analysis of the soils was taken from Test Pit #1 at 3-feet below grade. Soil structure grade was moderate. The soil formed a ball and a ribbon less than 1-inch in length before breaking. Soil structure shape was loose to blocky and consistence was firm. Soil texture was both gritty and smooth. STA sizing is based on Soil Type 2. A long term acceptance rate (LTAR) of 0.6 gallons per square foot will be used to design the OWTS. Test Pit #1 Backfill view of test pit Page 3 View of proposed STA DESIGN SPECIFICATIONS Design Calculations: Average Design Flow = 75 GPD x 2 people/bedroom x 3 Bedrooms + 75 GPD (4th bedroom) = 525 GPD LTAR = 0.6 GPD/SF 525 GPD / 0.6 GPD/SF x 1.2 (gravity bed) x 0.7 (chambers) = 735 SF The OWTS design is based on 4-bedrooms. An average daily wastewater flow of 525 GPD will be used. For the purposes of this OWTS design, Benchmark Elevation at finished floor 6937’ 6” has been established as 100’. CBO Inc. should be notified of any discrepancies or problems with grade elevations of proposed components during installation of the OWTS. OWTS Component Minimum Elevation Primary Tank Inlet Invert 98.5’ (6936’) (approx. horizontal distance 10’ / min. 2% fall = min. 2.5” drop) Manifold 96.5’ (6934’) (approx. horizontal distance 46’ / min 1% fall = min. 5.75” drop) The sewer line exiting the residence must have a double-sweep clean out and a minimum 2% grade to the septic tank. The system installation must include a 1250-gallon, two-compartment concrete septic tank with an effluent filter on the outlet tee. Risers must bring the manhole lids to grade for access. If more than one riser is added to the septic tank, an extension handle must be installed on the effluent filter. Effluent will gravity flow to a level manifold connecting 4 rows of 16 ‘Quick 4’ Standard Plus Infiltrator® chambers for a total of 64 chambers and 768 square feet of infiltrative area. Inspection ports must be installed each corner of the bed. Ports may be cut to grade and placed in sprinkler boxes for access. Page 4 COMPONENT SPECIFICATIONS The component manufacturers are typical of applications used by contractors and engineers in this area. CBO Inc. must approve alternative components prior to installation of the OWTS. Requests must be submitted, in writing, to our office for approval prior to installation. Component technical data sheets are available upon request. COMPONENT MANUFACTURER MODEL NO. COMMENTS Septic Tank Valley Precast Item # 1250-2CP 1250-gallon, 2- compartment concrete septic tank Tank Risers and Lids Orenco® Double-walled PVC Risers and Lids (24” diameter) Biotube Effluent Filter Orenco® 4-inch diameter, Full Size Effluent Filter and housing Chambers Infiltrator® 64 ‘Quick 4’ Plus Standard Chambers The component manufacturers are typical of applications used by contractors and engineers in this area. Alternatives may be considered or recommended by contacting our office. Construction must be according to Garfield County On-Site Wastewater Treatment System Regulations, the OWTS Permit provided by Garfield County Building Department, and this design. INSTALLATION CONTRACTOR CBO Inc. expects that the installer be experienced and qualified to perform the scope of work outlined in this design. The installer must review this design thoroughly and coordinate with our office in advance of installation. Any additional conditions in this design or county permit must be completed and documented prior to final approval of the OWTS installation. Communication between the installer and this office is expected throughout the installation. INSTALLATION OBSERVATIONS CBO Inc. must view the OWTS during construction. The OWTS observation should be performed before backfill, after placement of OWTS components. Septic tanks, distribution devices, pumps, dosing siphons, and other plumbing, as applicable, must also be observed. CBO Inc. should be notified 48 hours in advance to observe the installation. In an effort to improve the accuracy of the record drawing, we request that the installer provide a sketch of the installation, including path of the sewer lines, water line installation (if applicable), septic tank location, STA location, and measurements from building corners or another fixed objects on the property. This sketch is most easily provided on Sheet W2.0 of the OWTS Design Packet. Photographs of the installation and final cover are also requested to supplement our installation documentation. Page 5 REVEGETATION REQUIREMENTS An adequate layer of good quality topsoil capable of supporting revegetation shall be placed over the entire disturbed area of the OWTS installation. A mixture of native grass seed that has good soil stabilizing characteristics (but without taproots), provides a maximum transpiration rate, and competes well with successional species. No trees or shrubs, or any vegetation requiring regular irrigation shall be placed over the STA. Until vegetation is reestablished, erosion and sediment control measures shall be implemented and maintained on site. The owner of the OWTS shall be responsible for maintaining proper vegetation cover. OPERATION INFORMATION AND MAINTENANCE The property owner shall be responsible for the operation and maintenance of each OWTS servicing the property. The property owner is responsible for maintaining service contracts for manufactured units, alternating STAs, and any other components needing maintenance. Geo-fabrics or plastics should not be used over the STA. No heavy equipment, machinery, or materials should be placed on the backfilled STA. Machines with tracks (not wheels) should be used during construction of the STA for better weight distribution. Livestock should not graze on the STA. Plumbing fixtures should be checked to ensure that no additional water is being discharged to OWTS. For example, a running toilet or leaky faucet can discharge hundreds of gallons of water a day and harm a STA. If an effluent filter or screen has been installed in the OWTS, we recommend this filter or screen be cleaned annually, or as needed. If the OWTS consists of a pressurized pump system, we recommend the laterals be flushed annually, or as needed. The homeowner should pump the septic tank every two years, or as needed gauged by measurement of solids in the tank. Garbage disposal use should be minimized, and non-biodegradable materials should not be placed into the OWTS. Grease should not be placed in household drains. Loading from a water softener should not be discharged into the OWTS. No hazardous wastes should be directed into the OWTS. Mechanical room drains should not discharge into the OWTS. The OWTS is engineered for domestic waste only. ADDITIONAL CONSTRUCTION NOTES If design includes a pump, weep holes must be installed to allow pump lines to drain to minimize risk of freezing. The pump shall have an audible and visual alarm notification in the event of excessively high water conditions and shall be connected to a control breaker separate from the high water alarm breaker and from any other control system circuits. The pump system shall have a switch so the pump can be manually operated. Excavation equipment must not drive in excavation of the STA due to the potential to compact soil. Extensions should be placed on all septic tank components to allow access to them from existing grade. Backfill over the STA must be uniform and granular with no material greater than minus 3-inch. LIMITS: The design is based on information submitted. If soil conditions encountered are different from conditions described in report, CBO Inc. should be notified. All OWTS construction must be according to the county regulations. Requirements not specified in this report must follow applicable county regulations. The contractor should have documented and demonstrated knowledge of the requirements and regulations of the county in which they are working. Licensing of Systems Contractors may be required by county regulation. Page 6 Please call with questions. Sincerely, CBO Inc. Carla Ostberg, MPH, REHS Appendix H Road Construction and Improvements EOPC Engineering Opinion of Probable Cost Date: January 15, 2020 Harmony Lane Road Repair Options By: Drew Wharton, PE Roaring Fork Engineering REPAIR AND CHIP SEAL CHIP SEAL SY 5600 $2.50 $14,000.00 ROTO TILL EXISTING CHIP SEAL DAY 1 $1,500.00 $1,500.00 BLADE GRADING DAY 2 $1,500.00 $3,000.00 ROLLER COMPACTION DAY 2 $1,300.00 $2,600.00 CLASS 6 BASE CY 467 $72.00 $33,624.00 TRAFFIC CONTROL & MOBILIZATION LS 1 $20,000.00 $20,000.00 TOTAL $74,724.00 CONTRACT ITEM UNIT QUANTITY UNIT COST TOTAL COST Page 1 Appendix I Peak Flow and Storage Volume Calculations Onsite Basin Data Entry Basin # Total Area Impervious Area Impervious  (ft2) (ft 2)% 1 65358.00 29372.00 44.94% 2 39457.00 4013.00 10.17% 3 49780.00 15982.00 32.11% 4 17060.00 11105.00 65.09% 5 12460.00 0.00 0.00% 6 14758.00 7403.00 50.16% 7 27993.00 10046.00 35.89% 8 15591.00 3726.00 23.90% 9 25907.00 9585.00 37.00% 10 21904.00 0.00 0.00% 11 4371.00 3668.00 83.92% 12 71592.00 0.00 0.00% 13 6215.00 4475.00 72.00% 14 26705.00 14955.00 56.00% 15 7339.00 1907.00 25.98% 16 105220.00 15025.00 14.28% 17 276449.00 15685.00 5.67% 18 4510.00 4210.00 93.35% 19 140146.00 40725.00 29.06% 20 45974.00 12729.00 27.69% 21 7891.00 1331.00 16.87% 22 20333.00 5502.00 27.06% 25 Year Peak Discharge Developed Calculations  1 Hour(P1)0.952 Return Period 25 Basin ID Total Area Imp. Area  Impervious C Value Time of C Intensity Q Max See(D1) (ft 2) (ft 2) (%) From Table  (Td)I (From NOAA) (ft 3/sec) 1 65358.00 29372.00 44.94% 0.497 21 0.08 0.06 2 39457.00 4013.00 10.17% 0.412 24 0.08 0.03 3 49780.00 15982.00 32.11% 0.471 5 0.08 0.04 4 17060.00 11105.00 65.09% 0.595 5 0.08 0.02 5 12460.00 0.00 0.00% 0.370 5 0.08 0.01 6 14758.00 7403.00 50.16% 0.528 5 0.08 0.01 7 27993.00 10046.00 35.89% 0.483 5 0.08 0.03 8 15591.00 3726.00 23.90% 0.444 12 0.08 0.01 9 25907.00 9585.00 37.00% 0.483 5 0.08 0.02 10 21904.00 0.00 0.00% 0.370 11 0.08 0.02 11 4371.00 3668.00 83.92% 0.701 5 0.08 0.01 12 71592.00 0.00 0.00% 0.370 16 0.08 0.05 13 6215.00 4475.00 72.00% 0.625 5 0.08 0.01 14 26705.00 14955.00 56.00% 0.547 13 0.08 0.03 15 7339.00 1907.00 25.98% 0.458 5 0.08 0.01 16 105220.00 15025.00 14.28% 0.412 11 0.08 0.08 17 276449.00 15685.00 5.67% 0.393 26 0.08 0.20 18 4510.00 4210.00 93.35% 0.803 5 0.08 0.01 19 140146.00 40725.00 29.06% 0.458 27 0.08 0.12 20 45974.00 12729.00 27.69% 0.458 5 0.08 0.04 21 7891.00 1331.00 16.87% 0.429 5 0.08 0.01 22 20333.00 5502.00 27.06% 0.458 5 0.08 0.02 25 Year Peak Discharge Pre Development Calculations  1 Hour(P1)0.952 Return Period 25 Basin ID Total Area Imp. Area  Impervious C Value Time of C Intensity Q Max See(D1) (ft 2) (ft 2) (%) From Table  (Td)I (From NOAA) (ft 3/sec) 1 65358.00 0.00 0.00% 0.370 21 0.08 0.04 2 39457.00 0.00 0.00% 0.370 24 0.08 0.03 3 49780.00 0.00 0.00% 0.370 5 0.08 0.03 4 17060.00 0.00 0.00% 0.370 5 0.08 0.01 5 12460.00 0.00 0.00% 0.370 5 0.08 0.01 6 14758.00 0.00 0.00% 0.370 5 0.08 0.01 7 27993.00 0.00 0.00% 0.370 5 0.08 0.02 8 15591.00 0.00 0.00% 0.370 12 0.08 0.01 9 25907.00 0.00 0.00% 0.370 5 0.08 0.02 10 21904.00 0.00 0.00% 0.370 11 0.08 0.02 11 4371.00 0.00 0.00% 0.370 5 0.08 0.00 12 71592.00 0.00 0.00% 0.370 16 0.08 0.05 13 6215.00 0.00 0.00% 0.370 5 0.08 0.00 14 26705.00 0.00 0.00% 0.370 13 0.08 0.02 15 7339.00 0.00 0.00% 0.370 5 0.08 0.01 16 105220.00 0.00 0.00% 0.370 11 0.08 0.07 17 276449.00 0.00 0.00% 0.370 26 0.08 0.19 18 4510.00 0.00 0.00% 0.370 5 0.08 0.00 19 140146.00 1.00 0.00% 0.370 27 0.08 0.10 20 45974.00 0.00 0.00% 0.370 5 0.08 0.03 21 7891.00 0.00 0.00% 0.370 5 0.08 0.01 22 20333.00 0.00 0.00% 0.370 5 0.08 0.01 100 Year Peak Discharge Developed Calculations  1 Hour(P1)1.2 Return Period 100 Basin ID Total Area Imp. Area  Impervious C Value Time of C Intensity Q Max See(D1) (ft 2) (ft 2) (%) From Table  (Td) I=88.8P1/(10+Td)1.052 (ft3/sec) 1 65358.00 29372.00 44.94% 0.500 21 2.88 2.16 2 39457.00 4013.00 10.17% 0.400 24 2.61 0.95 3 49780.00 15982.00 32.11% 0.480 5 6.17 3.38 4 17060.00 11105.00 65.09% 0.590 5 6.17 1.43 5 12460.00 0.00 0.00% 0.350 5 6.17 0.62 6 14758.00 7403.00 50.16% 0.520 5 6.17 1.09 7 27993.00 10046.00 35.89% 0.490 5 6.17 1.94 8 15591.00 3726.00 23.90% 0.450 12 4.12 0.66 9 25907.00 9585.00 37.00% 0.490 5 6.17 1.80 10 21904.00 0.00 0.00% 0.350 11 4.33 0.76 11 4371.00 3668.00 83.92% 0.700 5 6.17 0.43 12 71592.00 0.00 0.00% 0.350 16 3.46 1.99 13 6215.00 4475.00 72.00% 0.620 5 6.17 0.55 14 26705.00 14955.00 56.00% 0.540 13 3.94 1.30 15 7339.00 1907.00 25.98% 0.460 5 6.17 0.48 16 105220.00 15025.00 14.28% 0.400 11 4.33 4.18 17 276449.00 15685.00 5.67% 0.380 26 2.46 5.92 18 4510.00 4210.00 93.35% 0.820 5 6.17 0.52 19 140146.00 40725.00 29.06% 0.460 27 2.39 3.53 20 45974.00 12729.00 27.69% 0.460 5 6.17 3.00 21 7891.00 1331.00 16.87% 0.430 5 6.17 0.48 22 20333.00 5502.00 27.06% 0.460 5 6.17 1.33 100 Year Peak Discharge Pre Development Calculations  1 Hour(P1)1.23 Return Period 100 Basin ID Total Area Imp. Area  Impervious C Value Time of C Intensity Q Max See(D1) (ft 2) (ft 2) (%) From Table  (Td) I=88.8P1/(10+Td)1.052 (ft3/sec) 1 65358.00 0.00 0.00% 0.350 21 2.88 1.51 2 39457.00 0.00 0.00% 0.350 24 2.61 0.83 3 49780.00 0.00 0.00% 0.350 5 6.17 2.47 4 17060.00 0.00 0.00% 0.350 5 6.17 0.85 5 12460.00 0.00 0.00% 0.350 5 6.17 0.62 6 14758.00 0.00 0.00% 0.350 5 6.17 0.73 7 27993.00 0.00 0.00% 0.350 5 6.17 1.39 8 15591.00 0.00 0.00% 0.350 12 4.12 0.52 9 25907.00 0.00 0.00% 0.350 5 6.17 1.28 10 21904.00 0.00 0.00% 0.350 11 4.33 0.76 11 4371.00 0.00 0.00% 0.350 5 6.17 0.22 12 71592.00 0.00 0.00% 0.350 16 3.46 1.99 13 6215.00 0.00 0.00% 0.350 5 6.17 0.31 14 26705.00 0.00 0.00% 0.350 13 3.94 0.84 15 7339.00 0.00 0.00% 0.350 5 6.17 0.36 16 105220.00 0.00 0.00% 0.350 11 4.33 3.66 17 276449.00 0.00 0.00% 0.350 26 2.46 5.46 18 4510.00 0.00 0.00% 0.350 5 6.17 0.22 19 140146.00 0.00 0.00% 0.350 27 2.39 2.69 20 45974.00 0.00 0.00% 0.350 5 6.17 2.28 21 7891.00 0.00 0.00% 0.350 5 6.17 0.39 22 20333.00 0.00 0.00% 0.350 5 6.17 1.01 25 Year Storage Calculations ‐ Basin 1 (Developed) Rainfall Duration  (minutes) Intensity (inches/Hour)      EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference  ft3 EQ 5‐4 C 0.497  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 65358.00 ft2 5 4.67 1052.91 18.11 1034.80 Tc 5 Minutes 10 3.41 1537.66 27.17 1510.49 Qa 0.060 ft3 15 2.78 1880.36 36.22 1844.14 P24(25)0.952 20 2.42 2182.48 45.28 2137.21 25 2.06 2322.27 54.33 2267.94 30 1.70 2299.73 63.39 2236.34 35 1.58 2486.25 72.45 2413.81 40 1.45 2616.56 81.50 2535.06 45 1.33 2690.66 90.56 2600.10 50 1.20 2708.54 99.61 2608.92 55 1.08 2670.20 108.67 2561.53 60 0.95 2575.69 117.73 2457.97 65 0.92 2686.28 126.78 2559.50 70 0.88 2780.86 135.84 2645.03 75 0.85 2859.44 144.89 2714.55 80 0.81 2922.00 153.95 2768.06 85 0.77 2968.56 163.00 2805.56 90 0.74 2999.11 172.06 2827.05 95 0.70 3013.66 181.12 2832.54 100 0.67 3012.19 190.17 2822.02 105 0.63 2994.72 199.23 2795.49 110 0.60 2961.24 208.28 2752.95 115 0.56 2911.75 217.34 2694.41 120 0.53 2846.25 226.39 2619.85 125 0.51 2887.34 235.45 2651.89 130 0.50 2922.23 244.51 2677.72 135 0.48 2950.92 253.56 2697.36 140 0.47 2973.41 262.62 2710.79 145 0.46 2989.70 271.67 2718.03 150 0.44 2999.79 280.73 2719.06 155 0.43 3003.68 289.79 2713.89 160 0.42 3001.37 298.84 2702.53 165 0.40 2992.86 307.90 2684.96 170 0.39 2978.14 316.95 2661.19 175 0.37 2957.23 326.01 2631.22 180 0.36 2930.12 335.06 2595.06 185 0.36 2974.67 344.12 2630.55 190 0.35 3017.22 353.18 2664.05 195 0.35 3057.79 362.23 2695.56 200 0.34 3096.36 371.29 2725.07 205 0.34 3132.94 380.34 2752.60 210 0.33 3167.53 389.40 2778.13 215 0.33 3200.13 398.46 2801.67 220 0.33 3230.74 407.51 2823.23 225 0.32 3259.35 416.57 2842.78 230 0.32 3285.97 425.62 2860.35 235 0.31 3310.61 434.68 2875.93 240 0.31 3333.25 443.73 2889.51 245 0.30 3353.89 452.79 2901.10 250 0.30 3372.55 461.85 2910.70 255 0.29 3389.22 470.90 2918.31 260 0.29 3403.89 479.96 2923.93 265 0.29 3416.57 489.01 2927.56 270 0.28 3427.26 498.07 2929.19 275 0.28 3435.96 507.12 2928.83 280 0.27 3442.67 516.18 2926.49 285 0.27 3447.38 525.24 2922.15 290 0.26 3450.11 534.29 2915.81 295 0.26 3450.84 543.35 2907.49 300 0.25 3449.58 552.40 2897.17 305 0.25 3446.33 561.46 2884.87 310 0.25 3441.08 570.52 2870.57 315 0.24 3433.85 579.57 2854.28 320 0.24 3424.62 588.63 2836.00 325 0.23 3413.41 597.68 2815.72 330 0.23 3400.20 606.74 2793.46 335 0.22 3385.00 615.79 2769.20 340 0.22 3367.80 624.85 2742.95 345 0.22 3348.62 633.91 2714.71 350 0.21 3327.44 642.96 2684.48 355 0.21 3304.28 652.02 2652.26 360 0.20 3279.14 661.07 2618.07 365 0.20 3307.54 670.13 2637.41 370 0.20 3335.47 679.18 2656.28 375 0.20 3362.93 688.24 2674.69 380 0.20 3389.92 697.30 2692.62 385 0.20 3416.44 706.35 2710.08 390 0.20 3442.49 715.41 2727.08 395 0.19 3468.07 724.46 2743.60 400 0.19 3493.18 733.52 2759.66 405 0.19 3517.82 742.58 2775.24 410 0.19 3541.99 751.63 2790.36 415 0.19 3565.69 760.69 2805.01 420 0.19 3588.92 769.74 2819.18 425 0.19 3611.69 778.80 2832.89 430 0.19 3633.98 787.85 2846.12 435 0.19 3655.80 796.91 2858.89 440 0.19 3677.16 805.97 2871.19 445 0.18 3698.04 815.02 2883.02 450 0.18 3718.45 824.08 2894.37 455 0.18 3738.40 833.13 2905.26 460 0.18 3757.87 842.19 2915.68 465 0.18 3776.88 851.25 2925.63 470 0.18 3795.41 860.30 2935.11 475 0.18 3813.48 869.36 2944.12 480 0.18 3831.07 878.41 2952.66 485 0.18 3848.20 887.47 2960.73 490 0.17 3864.85 896.52 2968.33 495 0.17 3881.04 905.58 2975.46 500 0.17 3896.76 914.64 2982.12 505 0.17 3912.00 923.69 2988.31 510 0.17 3926.78 932.75 2994.03 515 0.17 3941.09 941.80 2999.28 520 0.17 3954.92 950.86 3004.07 525 0.17 3968.29 959.91 3008.38 530 0.17 3981.19 968.97 3012.22 535 0.17 3993.62 978.03 3015.59 540 0.16 4005.58 987.08 3018.50 545 0.16 4017.07 996.14 3020.93 550 0.16 4028.09 1005.19 3022.89 555 0.16 4038.64 1014.25 3024.39 560 0.16 4048.72 1023.31 3025.41 565 0.16 4058.33 1032.36 3025.97 570 0.16 4067.47 1041.42 3026.05 575 0.16 4076.14 1050.47 3025.67 580 0.16 4084.34 1059.53 3024.81 585 0.16 4092.07 1068.58 3023.49 590 0.15 4099.33 1077.64 3021.69 595 0.15 4106.12 1086.70 3019.43 600 0.15 4112.45 1095.75 3016.69 605 0.15 4118.30 1104.81 3013.49 610 0.15 4123.68 1113.86 3009.82 615 0.15 4128.59 1122.92 3005.68 620 0.15 4133.04 1131.97 3001.06 625 0.15 4137.01 1141.03 2995.98 630 0.15 4140.52 1150.09 2990.43 635 0.14 4143.55 1159.14 2984.41 640 0.14 4146.11 1168.20 2977.92 645 0.14 4148.21 1177.25 2970.96 650 0.14 4149.83 1186.31 2963.52 655 0.14 4150.99 1195.37 2955.62 660 0.14 4151.68 1204.42 2947.25 665 0.14 4151.89 1213.48 2938.41 670 0.14 4151.64 1222.53 2929.10 675 0.14 4150.91 1231.59 2919.33 680 0.14 4149.72 1240.64 2909.08 685 0.13 4148.06 1249.70 2898.36 690 0.13 4145.93 1258.76 2887.17 695 0.13 4143.32 1267.81 2875.51 700 0.13 4140.25 1276.87 2863.38 705 0.13 4136.71 1285.92 2850.79 710 0.13 4132.70 1294.98 2837.72 715 0.13 4128.22 1304.04 2824.18 720 0.13 4123.27 1313.09 2810.18 725 0.13 4141.46 1322.15 2819.32 730 0.13 4159.51 1331.20 2828.31 735 0.13 4177.41 1340.26 2837.15 740 0.13 4195.17 1349.31 2845.86 745 0.13 4212.79 1358.37 2854.42 750 0.13 4230.26 1367.43 2862.83 755 0.12 4247.58 1376.48 2871.10 760 0.12 4264.76 1385.54 2879.23 765 0.12 4281.80 1394.59 2887.21 770 0.12 4298.70 1403.65 2895.05 775 0.12 4315.45 1412.70 2902.74 780 0.12 4332.05 1421.76 2910.29 785 0.12 4348.51 1430.82 2917.70 790 0.12 4364.83 1439.87 2924.96 795 0.12 4381.01 1448.93 2932.08 800 0.12 4397.04 1457.98 2939.05 805 0.12 4412.92 1467.04 2945.88 810 0.12 4428.66 1476.10 2952.57 815 0.12 4444.26 1485.15 2959.11 820 0.12 4459.71 1494.21 2965.51 825 0.12 4475.02 1503.26 2971.76 830 0.12 4490.19 1512.32 2977.87 835 0.12 4505.21 1521.37 2983.84 840 0.12 4520.09 1530.43 2989.66 845 0.12 4534.82 1539.49 2995.34 850 0.12 4549.41 1548.54 3000.87 855 0.12 4563.86 1557.60 3006.26 860 0.12 4578.16 1566.65 3011.51 865 0.12 4592.32 1575.71 3016.61 870 0.12 4606.33 1584.76 3021.56 875 0.12 4620.20 1593.82 3026.38 880 0.12 4633.92 1602.88 3031.05 885 0.12 4647.50 1611.93 3035.57 890 0.12 4660.94 1620.99 3039.95 895 0.12 4674.23 1630.04 3044.19 900 0.12 4687.38 1639.10 3048.28 905 0.12 4700.39 1648.16 3052.23 910 0.11 4713.25 1657.21 3056.04 915 0.11 4725.97 1666.27 3059.70 920 0.11 4738.54 1675.32 3063.22 925 0.11 4750.97 1684.38 3066.59 930 0.11 4763.25 1693.43 3069.82 935 0.11 4775.39 1702.49 3072.90 940 0.11 4787.39 1711.55 3075.84 945 0.11 4799.24 1720.60 3078.64 950 0.11 4810.95 1729.66 3081.29 955 0.11 4822.51 1738.71 3083.80 960 0.11 4833.93 1747.77 3086.17 965 0.11 4845.21 1756.83 3088.39 970 0.11 4856.34 1765.88 3090.46 975 0.11 4867.33 1774.94 3092.39 980 0.11 4878.18 1783.99 3094.18 985 0.11 4888.88 1793.05 3095.83 990 0.11 4899.43 1802.10 3097.33 995 0.11 4909.84 1811.16 3098.68 1000 0.11 4920.11 1820.22 3099.90 1005 0.11 4930.24 1829.27 3100.96 1010 0.11 4940.22 1838.33 3101.89 1015 0.11 4950.05 1847.38 3102.67 1020 0.11 4959.74 1856.44 3103.30 1025 0.11 4969.29 1865.49 3103.80 1030 0.11 4978.69 1874.55 3104.14 1035 0.11 4987.95 1883.61 3104.35 1040 0.11 4997.07 1892.66 3104.41 1045 0.11 5006.04 1901.72 3104.32 1050 0.11 5014.87 1910.77 3104.10 1055 0.11 5023.55 1919.83 3103.72 1060 0.11 5032.09 1928.89 3103.21 1065 0.10 5040.49 1937.94 3102.55 1070 0.10 5048.74 1947.00 3101.74 1075 0.10 5056.85 1956.05 3100.79 1080 0.10 5064.81 1965.11 3099.70 1085 0.10 5072.63 1974.16 3098.46 1090 0.10 5080.30 1983.22 3097.08 1095 0.10 5087.83 1992.28 3095.56 1100 0.10 5095.22 2001.33 3093.89 1105 0.10 5102.47 2010.39 3092.08 1110 0.10 5109.56 2019.44 3090.12 1115 0.10 5116.52 2028.50 3088.02 1120 0.10 5123.33 2037.55 3085.78 1125 0.10 5130.00 2046.61 3083.39 1130 0.10 5136.52 2055.67 3080.85 1135 0.10 5142.90 2064.72 3078.18 1140 0.10 5149.13 2073.78 3075.36 1145 0.10 5155.22 2082.83 3072.39 1150 0.10 5161.17 2091.89 3069.28 1155 0.10 5166.97 2100.95 3066.03 1160 0.10 5172.63 2110.00 3062.63 1165 0.10 5178.15 2119.06 3059.09 1170 0.10 5183.52 2128.11 3055.40 1175 0.10 5188.74 2137.17 3051.57 1180 0.10 5193.83 2146.22 3047.60 1185 0.10 5198.76 2155.28 3043.48 1190 0.10 5203.56 2164.34 3039.22 1195 0.10 5208.21 2173.39 3034.82 1200 0.10 5212.71 2182.45 3030.27 1205 0.10 5217.08 2191.50 3025.57 1210 0.10 5221.29 2200.56 3020.74 1215 0.10 5225.37 2209.62 3015.75 1220 0.10 5229.30 2218.67 3010.63 1225 0.09 5233.08 2227.73 3005.36 1230 0.09 5236.73 2236.78 2999.94 1235 0.09 5240.22 2245.84 2994.39 1240 0.09 5243.58 2254.89 2988.68 1245 0.09 5246.79 2263.95 2982.84 1250 0.09 5249.85 2273.01 2976.85 1255 0.09 5252.77 2282.06 2970.71 1260 0.09 5255.55 2291.12 2964.44 1265 0.09 5258.19 2300.17 2958.01 1270 0.09 5260.68 2309.23 2951.45 1275 0.09 5263.02 2318.28 2944.74 1280 0.09 5265.22 2327.34 2937.88 1285 0.09 5267.28 2336.40 2930.88 1290 0.09 5269.19 2345.45 2923.74 1295 0.09 5270.96 2354.51 2916.45 1300 0.09 5272.59 2363.56 2909.02 1305 0.09 5274.07 2372.62 2901.45 1310 0.09 5275.41 2381.68 2893.73 1315 0.09 5276.60 2390.73 2885.87 1320 0.09 5277.65 2399.79 2877.86 1325 0.09 5278.55 2408.84 2869.71 1330 0.09 5279.31 2417.90 2861.42 1335 0.09 5279.93 2426.95 2852.98 1340 0.09 5280.40 2436.01 2844.39 1345 0.09 5280.73 2445.07 2835.67 1350 0.09 5280.92 2454.12 2826.80 1355 0.09 5280.96 2463.18 2817.78 1360 0.09 5280.86 2472.23 2808.62 1365 0.09 5280.61 2481.29 2799.32 1370 0.09 5280.22 2490.34 2789.87 1375 0.09 5279.68 2499.40 2780.28 1380 0.08 5279.00 2508.46 2770.55 1385 0.08 5278.18 2517.51 2760.67 1390 0.08 5277.21 2526.57 2750.64 1395 0.08 5276.10 2535.62 2740.48 1400 0.08 5274.84 2544.68 2730.16 1405 0.08 5273.44 2553.74 2719.71 1410 0.08 5271.90 2562.79 2709.11 1415 0.08 5270.21 2571.85 2698.37 1420 0.08 5268.38 2580.90 2687.48 1425 0.08 5266.40 2589.96 2676.45 1430 0.08 5264.28 2599.01 2665.27 1435 0.08 5262.02 2608.07 2653.95 1440 0.08 5259.61 2617.13 2642.48 Maximum Difference 3104.41 25 Year Storage Calculations ‐ Basin 1 (Pre) Rainfall Duration  (minutes) Intensity (inches/Hour)       EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference ft3  EQ 5‐4 C 0.370  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 65358.00 ft2 5 4.67 784.25 13.49 770.76 Tc 5 Minutes 10 3.41 1145.31 20.24 1125.07 Qa 0.045 ft3 15 2.78 1400.57 26.98 1373.59 P24(25)0.952 20 2.42 1625.60 33.73 1591.87 25 2.06 1729.72 40.47 1689.25 30 1.70 1712.92 47.22 1665.71 35 1.58 1851.86 53.96 1797.90 40 1.45 1948.92 60.71 1888.21 45 1.33 2004.11 67.45 1936.66 50 1.20 2017.42 74.20 1943.23 55 1.08 1988.86 80.94 1907.92 60 0.95 1918.48 87.69 1830.79 65 0.92 2000.85 94.43 1906.42 Storage Volume 792.13 70 0.88 2071.29 101.18 1970.12 75 0.85 2129.82 107.92 2021.90 80 0.81 2176.42 114.67 2061.75 85 0.77 2211.10 121.41 2089.69 90 0.74 2233.85 128.16 2105.70 95 0.70 2244.69 134.90 2109.78 100 0.67 2243.59 141.65 2101.95 105 0.63 2230.58 148.39 2082.19 110 0.60 2205.64 155.14 2050.50 115 0.56 2168.78 161.88 2006.90 120 0.53 2120.00 168.63 1951.37 125 0.51 2150.60 175.37 1975.23 130 0.50 2176.59 182.12 1994.47 135 0.48 2197.96 188.86 2009.10 140 0.47 2214.71 195.61 2019.10 145 0.46 2226.84 202.35 2024.49 150 0.44 2234.36 209.10 2025.26 155 0.43 2237.26 215.84 2021.41 160 0.42 2235.53 222.59 2012.95 165 0.40 2229.19 229.33 1999.86 170 0.39 2218.24 236.08 1982.16 175 0.37 2202.66 242.82 1959.84 180 0.36 2182.47 249.57 1932.90 185 0.36 2215.65 256.31 1959.33 190 0.35 2247.34 263.06 1984.29 195 0.35 2277.56 269.80 2007.75 200 0.34 2306.29 276.55 2029.74 205 0.34 2333.54 283.29 2050.24 210 0.33 2359.30 290.04 2069.26 215 0.33 2383.58 296.78 2086.80 220 0.33 2406.38 303.53 2102.85 225 0.32 2427.69 310.27 2117.42 230 0.32 2447.52 317.02 2130.50 235 0.31 2465.87 323.77 2142.10 240 0.31 2482.73 330.51 2152.22 245 0.30 2498.11 337.26 2160.85 250 0.30 2512.01 344.00 2168.00 255 0.29 2524.42 350.75 2173.67 260 0.29 2535.35 357.49 2177.86 265 0.29 2544.79 364.24 2180.56 270 0.28 2552.76 370.98 2181.77 275 0.28 2559.23 377.73 2181.51 280 0.27 2564.23 384.47 2179.76 285 0.27 2567.74 391.22 2176.53 290 0.26 2569.77 397.96 2171.81 295 0.26 2570.32 404.71 2165.61 300 0.25 2569.38 411.45 2157.93 305 0.25 2566.96 418.20 2148.76 310 0.25 2563.05 424.94 2138.11 315 0.24 2557.66 431.69 2125.98 320 0.24 2550.79 438.43 2112.36 325 0.23 2542.44 445.18 2097.26 330 0.23 2532.60 451.92 2080.68 335 0.22 2521.28 458.67 2062.61 340 0.22 2508.47 465.41 2043.06 345 0.22 2494.18 472.16 2022.02 350 0.21 2478.41 478.90 1999.51 355 0.21 2461.15 485.65 1975.51 360 0.20 2442.43 492.39 1950.04 365 0.20 2463.58 499.14 1964.44 370 0.20 2484.38 505.88 1978.50 375 0.20 2504.84 512.63 1992.21 380 0.20 2524.94 519.37 2005.57 385 0.20 2544.69 526.12 2018.57 390 0.20 2564.10 532.86 2031.23 395 0.19 2583.15 539.61 2043.54 400 0.19 2601.85 546.35 2055.50 405 0.19 2620.21 553.10 2067.11 410 0.19 2638.21 559.84 2078.37 415 0.19 2655.86 566.59 2089.28 420 0.19 2673.17 573.33 2099.83 425 0.19 2690.12 580.08 2110.04 430 0.19 2706.73 586.82 2119.90 435 0.19 2722.98 593.57 2129.41 440 0.19 2738.89 600.31 2138.57 445 0.18 2754.44 607.06 2147.38 450 0.18 2769.65 613.80 2155.84 455 0.18 2784.50 620.55 2163.95 460 0.18 2799.01 627.30 2171.71 465 0.18 2813.16 634.04 2179.12 470 0.18 2826.97 640.79 2186.18 475 0.18 2840.42 647.53 2192.89 480 0.18 2853.53 654.28 2199.25 485 0.18 2866.28 661.02 2205.26 490 0.17 2878.69 667.77 2210.93 495 0.17 2890.75 674.51 2216.24 500 0.17 2902.45 681.26 2221.20 505 0.17 2913.81 688.00 2225.81 510 0.17 2924.82 694.75 2230.07 515 0.17 2935.47 701.49 2233.98 520 0.17 2945.78 708.24 2237.54 525 0.17 2955.74 714.98 2240.76 530 0.17 2965.34 721.73 2243.62 535 0.17 2974.60 728.47 2246.13 540 0.16 2983.51 735.22 2248.29 545 0.16 2992.07 741.96 2250.10 550 0.16 3000.27 748.71 2251.57 555 0.16 3008.13 755.45 2252.68 560 0.16 3015.64 762.20 2253.44 565 0.16 3022.80 768.94 2253.86 570 0.16 3029.61 775.69 2253.92 575 0.16 3036.06 782.43 2253.63 580 0.16 3042.17 789.18 2253.00 585 0.16 3047.93 795.92 2252.01 590 0.15 3053.34 802.67 2250.67 595 0.15 3058.40 809.41 2248.99 600 0.15 3063.11 816.16 2246.95 605 0.15 3067.47 822.90 2244.56 610 0.15 3071.48 829.65 2241.83 615 0.15 3075.14 836.39 2238.74 620 0.15 3078.45 843.14 2235.31 625 0.15 3081.41 849.88 2231.52 630 0.15 3084.02 856.63 2227.39 635 0.14 3086.28 863.37 2222.90 640 0.14 3088.19 870.12 2218.07 645 0.14 3089.75 876.86 2212.88 650 0.14 3090.96 883.61 2207.35 655 0.14 3091.82 890.35 2201.46 660 0.14 3092.33 897.10 2195.23 665 0.14 3092.49 903.84 2188.64 670 0.14 3092.30 910.59 2181.71 675 0.14 3091.76 917.33 2174.43 680 0.14 3090.87 924.08 2166.79 685 0.13 3089.63 930.82 2158.81 690 0.13 3088.04 937.57 2150.47 695 0.13 3086.11 944.32 2141.79 700 0.13 3083.82 951.06 2132.76 705 0.13 3081.18 957.81 2123.37 710 0.13 3078.19 964.55 2113.64 715 0.13 3074.85 971.30 2103.56 720 0.13 3071.17 978.04 2093.13 725 0.13 3084.72 984.79 2099.94 730 0.13 3098.16 991.53 2106.63 735 0.13 3111.50 998.28 2113.22 740 0.13 3124.72 1005.02 2119.70 745 0.13 3137.84 1011.77 2126.08 750 0.13 3150.86 1018.51 2132.35 755 0.12 3163.76 1025.26 2138.51 760 0.12 3176.56 1032.00 2144.56 765 0.12 3189.25 1038.75 2150.50 770 0.12 3201.83 1045.49 2156.34 775 0.12 3214.31 1052.24 2162.07 780 0.12 3226.68 1058.98 2167.70 785 0.12 3238.94 1065.73 2173.21 790 0.12 3251.09 1072.47 2178.62 795 0.12 3263.14 1079.22 2183.92 800 0.12 3275.08 1085.96 2189.12 805 0.12 3286.91 1092.71 2194.21 810 0.12 3298.64 1099.45 2199.19 815 0.12 3310.26 1106.20 2204.06 820 0.12 3321.77 1112.94 2208.82 825 0.12 3333.17 1119.69 2213.48 830 0.12 3344.47 1126.43 2218.03 835 0.12 3355.65 1133.18 2222.48 840 0.12 3366.74 1139.92 2226.81 845 0.12 3377.71 1146.67 2231.04 850 0.12 3388.58 1153.41 2235.16 855 0.12 3399.34 1160.16 2239.18 860 0.12 3409.99 1166.90 2243.08 865 0.12 3420.53 1173.65 2246.88 870 0.12 3430.97 1180.39 2250.58 875 0.12 3441.30 1187.14 2254.16 880 0.12 3451.52 1193.88 2257.64 885 0.12 3461.64 1200.63 2261.01 890 0.12 3471.65 1207.37 2264.27 895 0.12 3481.55 1214.12 2267.43 900 0.12 3491.34 1220.86 2270.48 905 0.12 3501.03 1227.61 2273.42 910 0.11 3510.61 1234.35 2276.25 915 0.11 3520.08 1241.10 2278.98 920 0.11 3529.45 1247.84 2281.60 925 0.11 3538.70 1254.59 2284.11 930 0.11 3547.85 1261.34 2286.52 935 0.11 3556.90 1268.08 2288.82 940 0.11 3565.83 1274.83 2291.01 945 0.11 3574.66 1281.57 2293.09 950 0.11 3583.38 1288.32 2295.06 955 0.11 3591.99 1295.06 2296.93 960 0.11 3600.50 1301.81 2298.69 965 0.11 3608.90 1308.55 2300.35 970 0.11 3617.19 1315.30 2301.90 975 0.11 3625.38 1322.04 2303.33 980 0.11 3633.45 1328.79 2304.67 985 0.11 3641.42 1335.53 2305.89 990 0.11 3649.29 1342.28 2307.01 995 0.11 3657.04 1349.02 2308.02 1000 0.11 3664.69 1355.77 2308.92 1005 0.11 3672.23 1362.51 2309.72 1010 0.11 3679.66 1369.26 2310.41 1015 0.11 3686.99 1376.00 2310.99 1020 0.11 3694.21 1382.75 2311.46 1025 0.11 3701.32 1389.49 2311.83 1030 0.11 3708.32 1396.24 2312.09 1035 0.11 3715.22 1402.98 2312.24 1040 0.11 3722.01 1409.73 2312.28 1045 0.11 3728.69 1416.47 2312.22 1050 0.11 3735.27 1423.22 2312.05 1055 0.11 3741.74 1429.96 2311.77 1060 0.11 3748.10 1436.71 2311.39 1065 0.10 3754.35 1443.45 2310.90 1070 0.10 3760.49 1450.20 2310.30 1075 0.10 3766.53 1456.94 2309.59 1080 0.10 3772.46 1463.69 2308.78 1085 0.10 3778.29 1470.43 2307.86 1090 0.10 3784.01 1477.18 2306.83 1095 0.10 3789.62 1483.92 2305.69 1100 0.10 3795.12 1490.67 2304.45 1105 0.10 3800.51 1497.41 2303.10 1110 0.10 3805.80 1504.16 2301.64 1115 0.10 3810.98 1510.90 2300.08 1120 0.10 3816.05 1517.65 2298.40 1125 0.10 3821.02 1524.39 2296.62 1130 0.10 3825.88 1531.14 2294.74 1135 0.10 3830.63 1537.88 2292.74 1140 0.10 3835.27 1544.63 2290.64 1145 0.10 3839.81 1551.37 2288.43 1150 0.10 3844.24 1558.12 2286.12 1155 0.10 3848.56 1564.86 2283.70 1160 0.10 3852.77 1571.61 2281.16 1165 0.10 3856.88 1578.36 2278.53 1170 0.10 3860.88 1585.10 2275.78 1175 0.10 3864.78 1591.85 2272.93 1180 0.10 3868.56 1598.59 2269.97 1185 0.10 3872.24 1605.34 2266.90 1190 0.10 3875.81 1612.08 2263.73 1195 0.10 3879.27 1618.83 2260.45 1200 0.10 3882.63 1625.57 2257.06 1205 0.10 3885.88 1632.32 2253.56 1210 0.10 3889.02 1639.06 2249.96 1215 0.10 3892.06 1645.81 2246.25 1220 0.10 3894.98 1652.55 2242.43 1225 0.09 3897.80 1659.30 2238.51 1230 0.09 3900.52 1666.04 2234.47 1235 0.09 3903.12 1672.79 2230.33 1240 0.09 3905.62 1679.53 2226.09 1245 0.09 3908.01 1686.28 2221.73 1250 0.09 3910.29 1693.02 2217.27 1255 0.09 3912.47 1699.77 2212.70 1260 0.09 3914.54 1706.51 2208.03 1265 0.09 3916.50 1713.26 2203.24 1270 0.09 3918.35 1720.00 2198.35 1275 0.09 3920.10 1726.75 2193.35 1280 0.09 3921.74 1733.49 2188.25 1285 0.09 3923.27 1740.24 2183.03 1290 0.09 3924.70 1746.98 2177.72 1295 0.09 3926.02 1753.73 2172.29 1300 0.09 3927.23 1760.47 2166.75 1305 0.09 3928.33 1767.22 2161.11 1310 0.09 3929.33 1773.96 2155.36 1315 0.09 3930.21 1780.71 2149.51 1320 0.09 3931.00 1787.45 2143.54 1325 0.09 3931.67 1794.20 2137.47 1330 0.09 3932.24 1800.94 2131.29 1335 0.09 3932.70 1807.69 2125.01 1340 0.09 3933.05 1814.43 2118.61 1345 0.09 3933.29 1821.18 2112.11 1350 0.09 3933.43 1827.92 2105.51 1355 0.09 3933.46 1834.67 2098.79 1360 0.09 3933.38 1841.41 2091.97 1365 0.09 3933.20 1848.16 2085.04 1370 0.09 3932.91 1854.90 2078.00 1375 0.09 3932.51 1861.65 2070.86 1380 0.08 3932.00 1868.39 2063.61 1385 0.08 3931.39 1875.14 2056.25 1390 0.08 3930.67 1881.89 2048.78 1395 0.08 3929.84 1888.63 2041.21 1400 0.08 3928.91 1895.38 2033.53 1405 0.08 3927.86 1902.12 2025.74 1410 0.08 3926.71 1908.87 2017.85 1415 0.08 3925.46 1915.61 2009.85 1420 0.08 3924.09 1922.36 2001.74 1425 0.08 3922.62 1929.10 1993.52 1430 0.08 3921.04 1935.85 1985.20 1435 0.08 3919.36 1942.59 1976.76 1440 0.08 3917.56 1949.34 1968.22 Maximum Difference 2312.28 25 Year Storage Calculations ‐ Basin 2 (Developed) Rainfall Duration  (minutes) Intensity (inches/Hour)      EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference  ft3 EQ 5‐4 C 0.412  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 39457.00 ft2 5 4.67 527.71 26.32 501.39 Tc 24 Minutes 10 3.41 770.66 30.86 739.80 Qa 0.030 ft3 15 2.78 942.42 35.40 907.02 P24(25)0.952 20 2.42 1093.84 39.94 1053.90 25 2.06 1163.90 44.48 1119.42 30 1.70 1152.60 49.02 1103.58 35 1.58 1246.09 53.56 1192.53 40 1.45 1311.40 58.10 1253.30 45 1.33 1348.53 62.63 1285.90 50 1.20 1357.49 67.17 1290.32 55 1.08 1338.27 71.71 1266.56 60 0.95 1290.91 76.25 1214.66 65 0.92 1346.34 80.79 1265.55 70 0.88 1393.74 85.33 1308.41 75 0.85 1433.12 89.87 1343.26 80 0.81 1464.48 94.40 1370.07 85 0.77 1487.81 98.94 1388.87 90 0.74 1503.12 103.48 1399.64 95 0.70 1510.41 108.02 1402.39 100 0.67 1509.68 112.56 1397.12 105 0.63 1500.92 117.10 1383.82 110 0.60 1484.14 121.64 1362.50 115 0.56 1459.34 126.18 1333.16 120 0.53 1426.51 130.71 1295.80 125 0.51 1447.11 135.25 1311.85 130 0.50 1464.59 139.79 1324.80 135 0.48 1478.97 144.33 1334.64 140 0.47 1490.24 148.87 1341.37 145 0.46 1498.41 153.41 1345.00 150 0.44 1503.46 157.95 1345.52 155 0.43 1505.41 162.48 1342.93 160 0.42 1504.25 167.02 1337.23 165 0.40 1499.99 171.56 1328.43 170 0.39 1492.62 176.10 1316.52 175 0.37 1482.14 180.64 1301.50 180 0.36 1468.55 185.18 1283.37 185 0.36 1490.87 189.72 1301.16 190 0.35 1512.20 194.26 1317.95 195 0.35 1532.53 198.79 1333.74 200 0.34 1551.86 203.33 1348.53 205 0.34 1570.20 207.87 1362.33 210 0.33 1587.53 212.41 1375.12 215 0.33 1603.87 216.95 1386.92 220 0.33 1619.21 221.49 1397.72 225 0.32 1633.55 226.03 1407.53 230 0.32 1646.90 230.56 1416.33 235 0.31 1659.24 235.10 1424.14 240 0.31 1670.59 239.64 1430.95 245 0.30 1680.94 244.18 1436.76 250 0.30 1690.29 248.72 1441.57 255 0.29 1698.64 253.26 1445.38 260 0.29 1705.99 257.80 1448.20 265 0.29 1712.35 262.34 1450.01 270 0.28 1717.71 266.87 1450.83 275 0.28 1722.07 271.41 1450.65 280 0.27 1725.43 275.95 1449.48 285 0.27 1727.79 280.49 1447.30 290 0.26 1729.16 285.03 1444.13 295 0.26 1729.52 289.57 1439.96 300 0.25 1728.89 294.11 1434.79 305 0.25 1727.26 298.64 1428.62 310 0.25 1724.64 303.18 1421.45 315 0.24 1721.01 307.72 1413.29 320 0.24 1716.39 312.26 1404.13 325 0.23 1710.76 316.80 1393.97 330 0.23 1704.14 321.34 1382.81 335 0.22 1696.53 325.88 1370.65 340 0.22 1687.91 330.42 1357.49 345 0.22 1678.29 334.95 1343.34 350 0.21 1667.68 339.49 1328.19 355 0.21 1656.07 344.03 1312.04 360 0.20 1643.47 348.57 1294.90 365 0.20 1657.70 353.11 1304.60 370 0.20 1671.70 357.65 1314.05 375 0.20 1685.46 362.19 1323.28 380 0.20 1698.99 366.72 1332.27 385 0.20 1712.28 371.26 1341.02 390 0.20 1725.34 375.80 1349.54 395 0.19 1738.16 380.34 1357.82 400 0.19 1750.75 384.88 1365.87 405 0.19 1763.10 389.42 1373.68 410 0.19 1775.21 393.96 1381.25 415 0.19 1787.09 398.50 1388.59 420 0.19 1798.73 403.03 1395.70 425 0.19 1810.14 407.57 1402.57 430 0.19 1821.31 412.11 1409.20 435 0.19 1832.25 416.65 1415.60 440 0.19 1842.95 421.19 1421.76 445 0.18 1853.42 425.73 1427.69 450 0.18 1863.65 430.27 1433.38 455 0.18 1873.65 434.80 1438.84 460 0.18 1883.41 439.34 1444.06 465 0.18 1892.93 443.88 1449.05 470 0.18 1902.22 448.42 1453.80 475 0.18 1911.28 452.96 1458.32 480 0.18 1920.09 457.50 1462.60 485 0.18 1928.68 462.04 1466.64 490 0.17 1937.02 466.58 1470.45 495 0.17 1945.14 471.11 1474.02 500 0.17 1953.01 475.65 1477.36 505 0.17 1960.66 480.19 1480.46 510 0.17 1968.06 484.73 1483.33 515 0.17 1975.23 489.27 1485.96 520 0.17 1982.17 493.81 1488.36 525 0.17 1988.87 498.35 1490.52 530 0.17 1995.33 502.89 1492.45 535 0.17 2001.56 507.42 1494.14 540 0.16 2007.56 511.96 1495.59 545 0.16 2013.31 516.50 1496.81 550 0.16 2018.84 521.04 1497.80 555 0.16 2024.12 525.58 1498.55 560 0.16 2029.18 530.12 1499.06 565 0.16 2033.99 534.66 1499.34 570 0.16 2038.57 539.19 1499.38 575 0.16 2042.92 543.73 1499.19 580 0.16 2047.03 548.27 1498.76 585 0.16 2050.90 552.81 1498.09 590 0.15 2054.54 557.35 1497.19 595 0.15 2057.95 561.89 1496.06 600 0.15 2061.12 566.43 1494.69 605 0.15 2064.05 570.97 1493.08 610 0.15 2066.75 575.50 1491.24 615 0.15 2069.21 580.04 1489.17 620 0.15 2071.44 584.58 1486.86 625 0.15 2073.43 589.12 1484.31 630 0.15 2075.18 593.66 1481.53 635 0.14 2076.71 598.20 1478.51 640 0.14 2077.99 602.74 1475.25 645 0.14 2079.04 607.27 1471.77 650 0.14 2079.85 611.81 1468.04 655 0.14 2080.43 616.35 1464.08 660 0.14 2080.78 620.89 1459.89 665 0.14 2080.89 625.43 1455.46 670 0.14 2080.76 629.97 1450.79 675 0.14 2080.40 634.51 1445.89 680 0.14 2079.80 639.05 1440.75 685 0.13 2078.96 643.58 1435.38 690 0.13 2077.90 648.12 1429.77 695 0.13 2076.59 652.66 1423.93 700 0.13 2075.05 657.20 1417.85 705 0.13 2073.28 661.74 1411.54 710 0.13 2071.27 666.28 1404.99 715 0.13 2069.02 670.82 1398.20 720 0.13 2066.54 675.35 1391.19 725 0.13 2075.66 679.89 1395.77 730 0.13 2084.70 684.43 1400.27 735 0.13 2093.68 688.97 1404.71 740 0.13 2102.58 693.51 1409.07 745 0.13 2111.41 698.05 1413.36 750 0.13 2120.16 702.59 1417.57 755 0.12 2128.84 707.13 1421.72 760 0.12 2137.46 711.66 1425.79 765 0.12 2146.00 716.20 1429.79 770 0.12 2154.46 720.74 1433.72 775 0.12 2162.86 725.28 1437.58 780 0.12 2171.18 729.82 1441.36 785 0.12 2179.43 734.36 1445.07 790 0.12 2187.61 738.90 1448.71 795 0.12 2195.72 743.43 1452.28 800 0.12 2203.75 747.97 1455.78 805 0.12 2211.71 752.51 1459.20 810 0.12 2219.60 757.05 1462.55 815 0.12 2227.42 761.59 1465.83 820 0.12 2235.16 766.13 1469.04 825 0.12 2242.84 770.67 1472.17 830 0.12 2250.44 775.21 1475.23 835 0.12 2257.97 779.74 1478.22 840 0.12 2265.42 784.28 1481.14 845 0.12 2272.81 788.82 1483.99 850 0.12 2280.12 793.36 1486.76 855 0.12 2287.36 797.90 1489.46 860 0.12 2294.53 802.44 1492.09 865 0.12 2301.62 806.98 1494.65 870 0.12 2308.65 811.51 1497.13 875 0.12 2315.60 816.05 1499.54 880 0.12 2322.47 820.59 1501.88 885 0.12 2329.28 825.13 1504.15 890 0.12 2336.02 829.67 1506.35 895 0.12 2342.68 834.21 1508.47 900 0.12 2349.27 838.75 1510.52 905 0.12 2355.79 843.29 1512.50 910 0.11 2362.23 847.82 1514.41 915 0.11 2368.61 852.36 1516.24 920 0.11 2374.91 856.90 1518.01 925 0.11 2381.14 861.44 1519.70 930 0.11 2387.29 865.98 1521.31 935 0.11 2393.38 870.52 1522.86 940 0.11 2399.39 875.06 1524.33 945 0.11 2405.33 879.60 1525.74 950 0.11 2411.20 884.13 1527.07 955 0.11 2416.99 888.67 1528.32 960 0.11 2422.72 893.21 1529.51 965 0.11 2428.37 897.75 1530.62 970 0.11 2433.95 902.29 1531.66 975 0.11 2439.46 906.83 1532.63 980 0.11 2444.89 911.37 1533.53 985 0.11 2450.25 915.90 1534.35 990 0.11 2455.55 920.44 1535.10 995 0.11 2460.76 924.98 1535.78 1000 0.11 2465.91 929.52 1536.39 1005 0.11 2470.98 934.06 1536.92 1010 0.11 2475.99 938.60 1537.39 1015 0.11 2480.92 943.14 1537.78 1020 0.11 2485.77 947.68 1538.10 1025 0.11 2490.56 952.21 1538.34 1030 0.11 2495.27 956.75 1538.52 1035 0.11 2499.91 961.29 1538.62 1040 0.11 2504.48 965.83 1538.65 1045 0.11 2508.98 970.37 1538.61 1050 0.11 2513.40 974.91 1538.49 1055 0.11 2517.75 979.45 1538.31 1060 0.11 2522.03 983.98 1538.05 1065 0.10 2526.24 988.52 1537.72 1070 0.10 2530.38 993.06 1537.31 1075 0.10 2534.44 997.60 1536.84 1080 0.10 2538.43 1002.14 1536.29 1085 0.10 2542.35 1006.68 1535.67 1090 0.10 2546.20 1011.22 1534.98 1095 0.10 2549.97 1015.76 1534.22 1100 0.10 2553.67 1020.29 1533.38 1105 0.10 2557.30 1024.83 1532.47 1110 0.10 2560.86 1029.37 1531.49 1115 0.10 2564.35 1033.91 1530.44 1120 0.10 2567.76 1038.45 1529.31 1125 0.10 2571.10 1042.99 1528.11 1130 0.10 2574.37 1047.53 1526.85 1135 0.10 2577.57 1052.06 1525.50 1140 0.10 2580.69 1056.60 1524.09 1145 0.10 2583.75 1061.14 1522.60 1150 0.10 2586.73 1065.68 1521.05 1155 0.10 2589.63 1070.22 1519.41 1160 0.10 2592.47 1074.76 1517.71 1165 0.10 2595.23 1079.30 1515.94 1170 0.10 2597.93 1083.84 1514.09 1175 0.10 2600.55 1088.37 1512.17 1180 0.10 2603.09 1092.91 1510.18 1185 0.10 2605.57 1097.45 1508.12 1190 0.10 2607.97 1101.99 1505.98 1195 0.10 2610.30 1106.53 1503.77 1200 0.10 2612.56 1111.07 1501.49 1205 0.10 2614.75 1115.61 1499.14 1210 0.10 2616.86 1120.14 1496.71 1215 0.10 2618.90 1124.68 1494.22 1220 0.10 2620.87 1129.22 1491.65 1225 0.09 2622.77 1133.76 1489.01 1230 0.09 2624.59 1138.30 1486.29 1235 0.09 2626.35 1142.84 1483.51 1240 0.09 2628.03 1147.38 1480.65 1245 0.09 2629.64 1151.92 1477.72 1250 0.09 2631.17 1156.45 1474.72 1255 0.09 2632.64 1160.99 1471.64 1260 0.09 2634.03 1165.53 1468.50 1265 0.09 2635.35 1170.07 1465.28 1270 0.09 2636.60 1174.61 1461.99 1275 0.09 2637.77 1179.15 1458.62 1280 0.09 2638.88 1183.69 1455.19 1285 0.09 2639.91 1188.22 1451.68 1290 0.09 2640.87 1192.76 1448.10 1295 0.09 2641.75 1197.30 1444.45 1300 0.09 2642.57 1201.84 1440.73 1305 0.09 2643.31 1206.38 1436.93 1310 0.09 2643.98 1210.92 1433.06 1315 0.09 2644.58 1215.46 1429.12 1320 0.09 2645.10 1220.00 1425.11 1325 0.09 2645.56 1224.53 1421.02 1330 0.09 2645.94 1229.07 1416.87 1335 0.09 2646.25 1233.61 1412.64 1340 0.09 2646.48 1238.15 1408.33 1345 0.09 2646.65 1242.69 1403.96 1350 0.09 2646.74 1247.23 1399.51 1355 0.09 2646.76 1251.77 1395.00 1360 0.09 2646.71 1256.31 1390.41 1365 0.09 2646.59 1260.84 1385.74 1370 0.09 2646.39 1265.38 1381.01 1375 0.09 2646.12 1269.92 1376.20 1380 0.08 2645.78 1274.46 1371.32 1385 0.08 2645.37 1279.00 1366.37 1390 0.08 2644.88 1283.54 1361.35 1395 0.08 2644.33 1288.08 1356.25 1400 0.08 2643.70 1292.61 1351.08 1405 0.08 2643.00 1297.15 1345.84 1410 0.08 2642.22 1301.69 1340.53 1415 0.08 2641.38 1306.23 1335.15 1420 0.08 2640.46 1310.77 1329.69 1425 0.08 2639.47 1315.31 1324.16 1430 0.08 2638.41 1319.85 1318.56 1435 0.08 2637.27 1324.39 1312.89 1440 0.08 2636.06 1328.92 1307.14 Maximum Difference 1538.65 25 Year Storage Calculations ‐ Basin 2 (Pre) Rainfall Duration  (minutes) Intensity (inches/Hour)       EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference ft3  EQ 5‐4 C 0.370  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 39457.00 ft2 5 4.67 473.46 23.62 449.84 Tc 24 Minutes 10 3.41 691.43 27.69 663.74 Qa 0.027 ft3 15 2.78 845.53 31.76 813.77 P24(25)0.952 20 2.42 981.38 35.83 945.55 25 2.06 1044.24 39.91 1004.33 30 1.70 1034.10 43.98 990.12 35 1.58 1117.98 48.05 1069.93 40 1.45 1176.57 52.12 1124.45 45 1.33 1209.89 56.19 1153.70 50 1.20 1217.93 60.27 1157.66 55 1.08 1200.69 64.34 1136.35 60 0.95 1158.19 68.41 1089.78 65 0.92 1207.92 72.48 1135.44 Storage Volume 158.19 70 0.88 1250.45 76.55 1173.90 75 0.85 1285.78 80.63 1205.16 80 0.81 1313.92 84.70 1229.22 85 0.77 1334.85 88.77 1246.08 90 0.74 1348.59 92.84 1255.75 95 0.70 1355.13 96.92 1258.22 100 0.67 1354.47 100.99 1253.48 105 0.63 1346.61 105.06 1241.55 110 0.60 1331.56 109.13 1222.43 115 0.56 1309.31 113.20 1196.10 120 0.53 1279.85 117.28 1162.58 125 0.51 1298.33 121.35 1176.98 130 0.50 1314.02 125.42 1188.60 135 0.48 1326.92 129.49 1197.43 140 0.47 1337.03 133.56 1203.47 145 0.46 1344.36 137.64 1206.72 150 0.44 1348.90 141.71 1207.19 155 0.43 1350.64 145.78 1204.86 160 0.42 1349.60 149.85 1199.75 165 0.40 1345.78 153.92 1191.85 170 0.39 1339.16 158.00 1181.17 175 0.37 1329.76 162.07 1167.69 180 0.36 1317.57 166.14 1151.43 185 0.36 1337.60 170.21 1167.39 190 0.35 1356.74 174.28 1182.45 195 0.35 1374.98 178.36 1196.62 200 0.34 1392.32 182.43 1209.89 205 0.34 1408.77 186.50 1222.27 210 0.33 1424.32 190.57 1233.75 215 0.33 1438.98 194.64 1244.34 220 0.33 1452.74 198.72 1254.03 225 0.32 1465.61 202.79 1262.82 230 0.32 1477.58 206.86 1270.72 235 0.31 1488.66 210.93 1277.72 240 0.31 1498.84 215.00 1283.83 245 0.30 1508.12 219.08 1289.05 250 0.30 1516.51 223.15 1293.36 255 0.29 1524.01 227.22 1296.78 260 0.29 1530.60 231.29 1299.31 265 0.29 1536.31 235.37 1300.94 270 0.28 1541.11 239.44 1301.68 275 0.28 1545.02 243.51 1301.52 280 0.27 1548.04 247.58 1300.46 285 0.27 1550.16 251.65 1298.51 290 0.26 1551.39 255.73 1295.66 295 0.26 1551.71 259.80 1291.92 300 0.25 1551.15 263.87 1287.28 305 0.25 1549.69 267.94 1281.74 310 0.25 1547.33 272.01 1275.32 315 0.24 1544.08 276.09 1267.99 320 0.24 1539.93 280.16 1259.77 325 0.23 1534.88 284.23 1250.65 330 0.23 1528.94 288.30 1240.64 335 0.22 1522.11 292.37 1229.73 340 0.22 1514.38 296.45 1217.93 345 0.22 1505.75 300.52 1205.23 350 0.21 1496.23 304.59 1191.64 355 0.21 1485.81 308.66 1177.15 360 0.20 1474.51 312.73 1161.77 365 0.20 1487.28 316.81 1170.47 370 0.20 1499.84 320.88 1178.96 375 0.20 1512.18 324.95 1187.23 380 0.20 1524.32 329.02 1195.30 385 0.20 1536.25 333.09 1203.15 390 0.20 1547.96 337.17 1210.79 395 0.19 1559.46 341.24 1218.22 400 0.19 1570.75 345.31 1225.44 405 0.19 1581.83 349.38 1232.45 410 0.19 1592.70 353.45 1239.25 415 0.19 1603.36 357.53 1245.83 420 0.19 1613.81 361.60 1252.21 425 0.19 1624.04 365.67 1258.37 430 0.19 1634.07 369.74 1264.32 435 0.19 1643.88 373.82 1270.06 440 0.19 1653.48 377.89 1275.59 445 0.18 1662.87 381.96 1280.91 450 0.18 1672.05 386.03 1286.02 455 0.18 1681.02 390.10 1290.92 460 0.18 1689.78 394.18 1295.60 465 0.18 1698.32 398.25 1300.07 470 0.18 1706.66 402.32 1304.34 475 0.18 1714.78 406.39 1308.39 480 0.18 1722.69 410.46 1312.23 485 0.18 1730.39 414.54 1315.86 490 0.17 1737.88 418.61 1319.27 495 0.17 1745.16 422.68 1322.48 500 0.17 1752.23 426.75 1325.48 505 0.17 1759.08 430.82 1328.26 510 0.17 1765.73 434.90 1330.83 515 0.17 1772.16 438.97 1333.19 520 0.17 1778.38 443.04 1335.34 525 0.17 1784.40 447.11 1337.28 530 0.17 1790.20 451.18 1339.01 535 0.17 1795.78 455.26 1340.53 540 0.16 1801.16 459.33 1341.83 545 0.16 1806.33 463.40 1342.93 550 0.16 1811.28 467.47 1343.81 555 0.16 1816.03 471.54 1344.48 560 0.16 1820.56 475.62 1344.94 565 0.16 1824.88 479.69 1345.19 570 0.16 1828.99 483.76 1345.23 575 0.16 1832.89 487.83 1345.06 580 0.16 1836.58 491.90 1344.67 585 0.16 1840.05 495.98 1344.08 590 0.15 1843.32 500.05 1343.27 595 0.15 1846.37 504.12 1342.25 600 0.15 1849.22 508.19 1341.02 605 0.15 1851.85 512.27 1339.58 610 0.15 1854.27 516.34 1337.93 615 0.15 1856.48 520.41 1336.07 620 0.15 1858.48 524.48 1333.99 625 0.15 1860.26 528.55 1331.71 630 0.15 1861.84 532.63 1329.21 635 0.14 1863.20 536.70 1326.50 640 0.14 1864.36 540.77 1323.59 645 0.14 1865.30 544.84 1320.46 650 0.14 1866.03 548.91 1317.11 655 0.14 1866.55 552.99 1313.56 660 0.14 1866.86 557.06 1309.80 665 0.14 1866.95 561.13 1305.82 670 0.14 1866.84 565.20 1301.64 675 0.14 1866.51 569.27 1297.24 680 0.14 1865.98 573.35 1292.63 685 0.13 1865.23 577.42 1287.81 690 0.13 1864.27 581.49 1282.78 695 0.13 1863.10 585.56 1277.54 700 0.13 1861.72 589.63 1272.08 705 0.13 1860.13 593.71 1266.42 710 0.13 1858.32 597.78 1260.54 715 0.13 1856.31 601.85 1254.46 720 0.13 1854.08 605.92 1248.16 725 0.13 1862.26 609.99 1252.27 730 0.13 1870.38 614.07 1256.31 735 0.13 1878.43 618.14 1260.29 740 0.13 1886.41 622.21 1264.20 745 0.13 1894.33 626.28 1268.05 750 0.13 1902.19 630.35 1271.84 755 0.12 1909.98 634.43 1275.55 760 0.12 1917.71 638.50 1279.21 765 0.12 1925.37 642.57 1282.80 770 0.12 1932.97 646.64 1286.32 775 0.12 1940.50 650.72 1289.78 780 0.12 1947.96 654.79 1293.18 785 0.12 1955.37 658.86 1296.51 790 0.12 1962.70 662.93 1299.77 795 0.12 1969.98 667.00 1302.97 800 0.12 1977.19 671.08 1306.11 805 0.12 1984.33 675.15 1309.18 810 0.12 1991.41 679.22 1312.19 815 0.12 1998.42 683.29 1315.13 820 0.12 2005.37 687.36 1318.01 825 0.12 2012.25 691.44 1320.82 830 0.12 2019.07 695.51 1323.57 835 0.12 2025.83 699.58 1326.25 840 0.12 2032.52 703.65 1328.87 845 0.12 2039.14 707.72 1331.42 850 0.12 2045.70 711.80 1333.91 855 0.12 2052.20 715.87 1336.33 860 0.12 2058.63 719.94 1338.69 865 0.12 2065.00 724.01 1340.98 870 0.12 2071.30 728.08 1343.21 875 0.12 2077.53 732.16 1345.38 880 0.12 2083.70 736.23 1347.48 885 0.12 2089.81 740.30 1349.51 890 0.12 2095.85 744.37 1351.48 895 0.12 2101.83 748.44 1353.39 900 0.12 2107.74 752.52 1355.23 905 0.12 2113.59 756.59 1357.00 910 0.11 2119.37 760.66 1358.71 915 0.11 2125.09 764.73 1360.36 920 0.11 2130.75 768.80 1361.94 925 0.11 2136.34 772.88 1363.46 930 0.11 2141.86 776.95 1364.91 935 0.11 2147.32 781.02 1366.30 940 0.11 2152.71 785.09 1367.62 945 0.11 2158.04 789.17 1368.88 950 0.11 2163.31 793.24 1370.07 955 0.11 2168.51 797.31 1371.20 960 0.11 2173.64 801.38 1372.26 965 0.11 2178.71 805.45 1373.26 970 0.11 2183.72 809.53 1374.19 975 0.11 2188.66 813.60 1375.06 980 0.11 2193.54 817.67 1375.87 985 0.11 2198.35 821.74 1376.61 990 0.11 2203.09 825.81 1377.28 995 0.11 2207.78 829.89 1377.89 1000 0.11 2212.39 833.96 1378.44 1005 0.11 2216.95 838.03 1378.92 1010 0.11 2221.43 842.10 1379.33 1015 0.11 2225.86 846.17 1379.68 1020 0.11 2230.21 850.25 1379.97 1025 0.11 2234.51 854.32 1380.19 1030 0.11 2238.74 858.39 1380.35 1035 0.11 2242.90 862.46 1380.44 1040 0.11 2247.00 866.53 1380.46 1045 0.11 2251.03 870.61 1380.43 1050 0.11 2255.00 874.68 1380.32 1055 0.11 2258.91 878.75 1380.16 1060 0.11 2262.75 882.82 1379.92 1065 0.10 2266.52 886.89 1379.63 1070 0.10 2270.23 890.97 1379.27 1075 0.10 2273.88 895.04 1378.84 1080 0.10 2277.46 899.11 1378.35 1085 0.10 2280.97 903.18 1377.79 1090 0.10 2284.43 907.26 1377.17 1095 0.10 2287.81 911.33 1376.49 1100 0.10 2291.13 915.40 1375.74 1105 0.10 2294.39 919.47 1374.92 1110 0.10 2297.58 923.54 1374.04 1115 0.10 2300.71 927.62 1373.10 1120 0.10 2303.77 931.69 1372.09 1125 0.10 2306.77 935.76 1371.01 1130 0.10 2309.70 939.83 1369.87 1135 0.10 2312.57 943.90 1368.67 1140 0.10 2315.38 947.98 1367.40 1145 0.10 2318.11 952.05 1366.07 1150 0.10 2320.79 956.12 1364.67 1155 0.10 2323.40 960.19 1363.21 1160 0.10 2325.94 964.26 1361.68 1165 0.10 2328.42 968.34 1360.09 1170 0.10 2330.84 972.41 1358.43 1175 0.10 2333.19 976.48 1356.71 1180 0.10 2335.47 980.55 1354.92 1185 0.10 2337.69 984.62 1353.07 1190 0.10 2339.85 988.70 1351.15 1195 0.10 2341.94 992.77 1349.17 1200 0.10 2343.97 996.84 1347.13 1205 0.10 2345.93 1000.91 1345.02 1210 0.10 2347.82 1004.98 1342.84 1215 0.10 2349.66 1009.06 1340.60 1220 0.10 2351.42 1013.13 1338.29 1225 0.09 2353.13 1017.20 1335.93 1230 0.09 2354.76 1021.27 1333.49 1235 0.09 2356.34 1025.34 1330.99 1240 0.09 2357.84 1029.42 1328.43 1245 0.09 2359.29 1033.49 1325.80 1250 0.09 2360.67 1037.56 1323.11 1255 0.09 2361.98 1041.63 1320.35 1260 0.09 2363.23 1045.71 1317.52 1265 0.09 2364.41 1049.78 1314.64 1270 0.09 2365.53 1053.85 1311.68 1275 0.09 2366.59 1057.92 1308.67 1280 0.09 2367.58 1061.99 1305.58 1285 0.09 2368.50 1066.07 1302.44 1290 0.09 2369.36 1070.14 1299.23 1295 0.09 2370.16 1074.21 1295.95 1300 0.09 2370.89 1078.28 1292.61 1305 0.09 2371.56 1082.35 1289.20 1310 0.09 2372.16 1086.43 1285.73 1315 0.09 2372.69 1090.50 1282.20 1320 0.09 2373.16 1094.57 1278.59 1325 0.09 2373.57 1098.64 1274.93 1330 0.09 2373.91 1102.71 1271.20 1335 0.09 2374.19 1106.79 1267.41 1340 0.09 2374.40 1110.86 1263.55 1345 0.09 2374.55 1114.93 1259.62 1350 0.09 2374.63 1119.00 1255.63 1355 0.09 2374.65 1123.07 1251.58 1360 0.09 2374.61 1127.15 1247.46 1365 0.09 2374.50 1131.22 1243.28 1370 0.09 2374.32 1135.29 1239.03 1375 0.09 2374.08 1139.36 1234.72 1380 0.08 2373.77 1143.43 1230.34 1385 0.08 2373.40 1147.51 1225.90 1390 0.08 2372.97 1151.58 1221.39 1395 0.08 2372.47 1155.65 1216.82 1400 0.08 2371.90 1159.72 1212.18 1405 0.08 2371.27 1163.79 1207.48 1410 0.08 2370.58 1167.87 1202.71 1415 0.08 2369.82 1171.94 1197.88 1420 0.08 2369.00 1176.01 1192.99 1425 0.08 2368.11 1180.08 1188.03 1430 0.08 2367.16 1184.16 1183.00 1435 0.08 2366.14 1188.23 1177.91 1440 0.08 2365.05 1192.30 1172.75 Maximum Difference 1380.46 25 Year Storage Calculations ‐ Basin 3 (Developed) Rainfall Duration  (minutes) Intensity (inches/Hour)      EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference  ft3 EQ 5‐4 C 0.471  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 49780.00 ft2 5 4.67 759.78 13.07 746.71 Tc 5 Minutes 10 3.41 1109.56 19.60 1089.96 Qa 0.044 ft3 15 2.78 1356.86 26.14 1330.72 P24(25)0.952 20 2.42 1574.87 32.67 1542.19 25 2.06 1675.74 39.21 1636.53 30 1.70 1659.47 45.74 1613.72 35 1.58 1794.06 52.28 1741.79 40 1.45 1888.10 58.81 1829.28 45 1.33 1941.56 65.35 1876.22 50 1.20 1954.46 71.88 1882.58 55 1.08 1926.80 78.42 1848.38 60 0.95 1858.60 84.95 1773.65 65 0.92 1938.40 91.48 1846.92 70 0.88 2006.65 98.02 1908.63 75 0.85 2063.35 104.55 1958.80 80 0.81 2108.50 111.09 1997.41 85 0.77 2142.09 117.62 2024.47 90 0.74 2164.14 124.16 2039.98 95 0.70 2174.63 130.69 2043.94 100 0.67 2173.58 137.23 2036.35 105 0.63 2160.97 143.76 2017.21 110 0.60 2136.81 150.30 1986.51 115 0.56 2101.10 156.83 1944.27 120 0.53 2053.83 163.37 1890.47 125 0.51 2083.48 169.90 1913.58 130 0.50 2108.66 176.43 1932.23 135 0.48 2129.36 182.97 1946.40 140 0.47 2145.59 189.50 1956.09 145 0.46 2157.35 196.04 1961.31 150 0.44 2164.63 202.57 1962.05 155 0.43 2167.43 209.11 1958.33 160 0.42 2165.77 215.64 1950.12 165 0.40 2159.62 222.18 1937.45 170 0.39 2149.01 228.71 1920.30 175 0.37 2133.92 235.25 1898.67 180 0.36 2114.36 241.78 1872.58 185 0.36 2146.50 248.31 1898.19 190 0.35 2177.21 254.85 1922.36 195 0.35 2206.48 261.38 1945.10 200 0.34 2234.31 267.92 1966.39 205 0.34 2260.71 274.45 1986.26 210 0.33 2285.67 280.99 2004.68 215 0.33 2309.19 287.52 2021.67 220 0.33 2331.28 294.06 2037.22 225 0.32 2351.93 300.59 2051.33 230 0.32 2371.14 307.13 2064.01 235 0.31 2388.91 313.66 2075.25 240 0.31 2405.25 320.20 2085.05 245 0.30 2420.15 326.73 2093.42 250 0.30 2433.61 333.26 2100.34 255 0.29 2445.63 339.80 2105.84 260 0.29 2456.22 346.33 2109.89 265 0.29 2465.37 352.87 2112.51 270 0.28 2473.09 359.40 2113.68 275 0.28 2479.36 365.94 2113.43 280 0.27 2484.20 372.47 2111.73 285 0.27 2487.61 379.01 2108.60 290 0.26 2489.57 385.54 2104.03 295 0.26 2490.10 392.08 2098.02 300 0.25 2489.19 398.61 2090.58 305 0.25 2486.85 405.15 2081.70 310 0.25 2483.06 411.68 2071.38 315 0.24 2477.84 418.21 2059.63 320 0.24 2471.19 424.75 2046.44 325 0.23 2463.09 431.28 2031.81 330 0.23 2453.56 437.82 2015.74 335 0.22 2442.59 444.35 1998.24 340 0.22 2430.18 450.89 1979.30 345 0.22 2416.34 457.42 1958.92 350 0.21 2401.06 463.96 1937.10 355 0.21 2384.34 470.49 1913.85 360 0.20 2366.20 477.03 1889.18 365 0.20 2386.70 483.56 1903.14 370 0.20 2406.85 490.10 1916.75 375 0.20 2426.66 496.63 1930.03 380 0.20 2446.14 503.16 1942.98 385 0.20 2465.28 509.70 1955.58 390 0.20 2484.07 516.23 1967.84 395 0.19 2502.53 522.77 1979.77 400 0.19 2520.65 529.30 1991.35 405 0.19 2538.43 535.84 2002.60 410 0.19 2555.88 542.37 2013.50 415 0.19 2572.98 548.91 2024.07 420 0.19 2589.74 555.44 2034.30 425 0.19 2606.17 561.98 2044.19 430 0.19 2622.25 568.51 2053.74 435 0.19 2638.00 575.05 2062.96 440 0.19 2653.41 581.58 2071.83 445 0.18 2668.48 588.11 2080.37 450 0.18 2683.21 594.65 2088.56 455 0.18 2697.60 601.18 2096.42 460 0.18 2711.65 607.72 2103.94 465 0.18 2725.37 614.25 2111.11 470 0.18 2738.74 620.79 2117.95 475 0.18 2751.78 627.32 2124.46 480 0.18 2764.47 633.86 2130.62 485 0.18 2776.83 640.39 2136.44 490 0.17 2788.85 646.93 2141.93 495 0.17 2800.53 653.46 2147.07 500 0.17 2811.87 659.99 2151.88 505 0.17 2822.87 666.53 2156.34 510 0.17 2833.54 673.06 2160.47 515 0.17 2843.86 679.60 2164.26 520 0.17 2853.85 686.13 2167.71 525 0.17 2863.49 692.67 2170.83 530 0.17 2872.80 699.20 2173.60 535 0.17 2881.77 705.74 2176.03 540 0.16 2890.40 712.27 2178.13 545 0.16 2898.69 718.81 2179.88 550 0.16 2906.64 725.34 2181.30 555 0.16 2914.25 731.88 2182.38 560 0.16 2921.53 738.41 2183.12 565 0.16 2928.46 744.94 2183.52 570 0.16 2935.06 751.48 2183.58 575 0.16 2941.31 758.01 2183.30 580 0.16 2947.23 764.55 2182.68 585 0.16 2952.81 771.08 2181.73 590 0.15 2958.05 777.62 2180.43 595 0.15 2962.95 784.15 2178.80 600 0.15 2967.51 790.69 2176.83 605 0.15 2971.74 797.22 2174.51 610 0.15 2975.62 803.76 2171.86 615 0.15 2979.17 810.29 2168.88 620 0.15 2982.37 816.83 2165.55 625 0.15 2985.24 823.36 2161.88 630 0.15 2987.77 829.89 2157.87 635 0.14 2989.96 836.43 2153.53 640 0.14 2991.81 842.96 2148.84 645 0.14 2993.32 849.50 2143.82 650 0.14 2994.49 856.03 2138.46 655 0.14 2995.33 862.57 2132.76 660 0.14 2995.82 869.10 2126.72 665 0.14 2995.98 875.64 2120.34 670 0.14 2995.79 882.17 2113.62 675 0.14 2995.27 888.71 2106.57 680 0.14 2994.41 895.24 2099.17 685 0.13 2993.21 901.78 2091.44 690 0.13 2991.67 908.31 2083.36 695 0.13 2989.79 914.84 2074.95 700 0.13 2987.58 921.38 2066.20 705 0.13 2985.02 927.91 2057.11 710 0.13 2982.13 934.45 2047.68 715 0.13 2978.89 940.98 2037.91 720 0.13 2975.33 947.52 2027.81 725 0.13 2988.45 954.05 2034.40 730 0.13 3001.47 960.59 2040.89 735 0.13 3014.39 967.12 2047.27 740 0.13 3027.21 973.66 2053.55 745 0.13 3039.92 980.19 2059.73 750 0.13 3052.52 986.73 2065.80 755 0.12 3065.03 993.26 2071.77 760 0.12 3077.42 999.79 2077.63 765 0.12 3089.72 1006.33 2083.39 770 0.12 3101.91 1012.86 2089.05 775 0.12 3114.00 1019.40 2094.60 780 0.12 3125.98 1025.93 2100.05 785 0.12 3137.86 1032.47 2105.39 790 0.12 3149.63 1039.00 2110.63 795 0.12 3161.30 1045.54 2115.77 800 0.12 3172.87 1052.07 2120.80 805 0.12 3184.33 1058.61 2125.73 810 0.12 3195.69 1065.14 2130.55 815 0.12 3206.95 1071.67 2135.27 820 0.12 3218.10 1078.21 2139.89 825 0.12 3229.15 1084.74 2144.40 830 0.12 3240.09 1091.28 2148.81 835 0.12 3250.93 1097.81 2153.12 840 0.12 3261.67 1104.35 2157.32 845 0.12 3272.30 1110.88 2161.41 850 0.12 3282.82 1117.42 2165.41 855 0.12 3293.25 1123.95 2169.30 860 0.12 3303.57 1130.49 2173.08 865 0.12 3313.78 1137.02 2176.76 870 0.12 3323.90 1143.56 2180.34 875 0.12 3333.90 1150.09 2183.81 880 0.12 3343.81 1156.62 2187.18 885 0.12 3353.61 1163.16 2190.45 890 0.12 3363.30 1169.69 2193.61 895 0.12 3372.90 1176.23 2196.67 900 0.12 3382.38 1182.76 2199.62 905 0.12 3391.77 1189.30 2202.47 910 0.11 3401.05 1195.83 2205.22 915 0.11 3410.22 1202.37 2207.86 920 0.11 3419.30 1208.90 2210.40 925 0.11 3428.27 1215.44 2212.83 930 0.11 3437.13 1221.97 2215.16 935 0.11 3445.89 1228.51 2217.39 940 0.11 3454.55 1235.04 2219.51 945 0.11 3463.10 1241.57 2221.53 950 0.11 3471.55 1248.11 2223.44 955 0.11 3479.89 1254.64 2225.25 960 0.11 3488.13 1261.18 2226.96 965 0.11 3496.27 1267.71 2228.56 970 0.11 3504.30 1274.25 2230.06 975 0.11 3512.23 1280.78 2231.45 980 0.11 3520.06 1287.32 2232.74 985 0.11 3527.78 1293.85 2233.93 990 0.11 3535.40 1300.39 2235.01 995 0.11 3542.91 1306.92 2235.99 1000 0.11 3550.32 1313.46 2236.86 1005 0.11 3557.62 1319.99 2237.63 1010 0.11 3564.83 1326.52 2238.30 1015 0.11 3571.92 1333.06 2238.86 1020 0.11 3578.92 1339.59 2239.32 1025 0.11 3585.81 1346.13 2239.68 1030 0.11 3592.59 1352.66 2239.93 1035 0.11 3599.27 1359.20 2240.08 1040 0.11 3605.85 1365.73 2240.12 1045 0.11 3612.33 1372.27 2240.06 1050 0.11 3618.70 1378.80 2239.89 1055 0.11 3624.96 1385.34 2239.63 1060 0.11 3631.12 1391.87 2239.25 1065 0.10 3637.18 1398.41 2238.78 1070 0.10 3643.14 1404.94 2238.20 1075 0.10 3648.99 1411.47 2237.51 1080 0.10 3654.73 1418.01 2236.72 1085 0.10 3660.37 1424.54 2235.83 1090 0.10 3665.91 1431.08 2234.83 1095 0.10 3671.35 1437.61 2233.73 1100 0.10 3676.68 1444.15 2232.53 1105 0.10 3681.90 1450.68 2231.22 1110 0.10 3687.03 1457.22 2229.81 1115 0.10 3692.05 1463.75 2228.29 1120 0.10 3696.96 1470.29 2226.67 1125 0.10 3701.77 1476.82 2224.95 1130 0.10 3706.48 1483.35 2223.12 1135 0.10 3711.08 1489.89 2221.19 1140 0.10 3715.58 1496.42 2219.16 1145 0.10 3719.97 1502.96 2217.02 1150 0.10 3724.27 1509.49 2214.77 1155 0.10 3728.45 1516.03 2212.42 1160 0.10 3732.54 1522.56 2209.97 1165 0.10 3736.51 1529.10 2207.42 1170 0.10 3740.39 1535.63 2204.76 1175 0.10 3744.16 1542.17 2202.00 1180 0.10 3747.83 1548.70 2199.13 1185 0.10 3751.39 1555.24 2196.16 1190 0.10 3754.85 1561.77 2193.08 1195 0.10 3758.21 1568.30 2189.90 1200 0.10 3761.46 1574.84 2186.62 1205 0.10 3764.61 1581.37 2183.23 1210 0.10 3767.65 1587.91 2179.74 1215 0.10 3770.59 1594.44 2176.15 1220 0.10 3773.43 1600.98 2172.45 1225 0.09 3776.16 1607.51 2168.65 1230 0.09 3778.79 1614.05 2164.74 1235 0.09 3781.31 1620.58 2160.73 1240 0.09 3783.73 1627.12 2156.61 1245 0.09 3786.05 1633.65 2152.40 1250 0.09 3788.26 1640.19 2148.07 1255 0.09 3790.37 1646.72 2143.65 1260 0.09 3792.37 1653.25 2139.12 1265 0.09 3794.27 1659.79 2134.48 1270 0.09 3796.07 1666.32 2129.74 1275 0.09 3797.76 1672.86 2124.90 1280 0.09 3799.35 1679.39 2119.96 1285 0.09 3800.83 1685.93 2114.91 1290 0.09 3802.21 1692.46 2109.75 1295 0.09 3803.49 1699.00 2104.49 1300 0.09 3804.66 1705.53 2099.13 1305 0.09 3805.73 1712.07 2093.67 1310 0.09 3806.70 1718.60 2088.10 1315 0.09 3807.56 1725.14 2082.42 1320 0.09 3808.32 1731.67 2076.65 1325 0.09 3808.97 1738.20 2070.76 1330 0.09 3809.52 1744.74 2064.78 1335 0.09 3809.96 1751.27 2058.69 1340 0.09 3810.30 1757.81 2052.50 1345 0.09 3810.54 1764.34 2046.20 1350 0.09 3810.67 1770.88 2039.80 1355 0.09 3810.70 1777.41 2033.29 1360 0.09 3810.63 1783.95 2026.68 1365 0.09 3810.45 1790.48 2019.97 1370 0.09 3810.17 1797.02 2013.15 1375 0.09 3809.78 1803.55 2006.23 1380 0.08 3809.29 1810.09 1999.21 1385 0.08 3808.70 1816.62 1992.08 1390 0.08 3808.00 1823.15 1984.84 1395 0.08 3807.20 1829.69 1977.51 1400 0.08 3806.29 1836.22 1970.07 1405 0.08 3805.28 1842.76 1962.52 1410 0.08 3804.17 1849.29 1954.87 1415 0.08 3802.95 1855.83 1947.12 1420 0.08 3801.63 1862.36 1939.27 1425 0.08 3800.20 1868.90 1931.31 1430 0.08 3798.67 1875.43 1923.24 1435 0.08 3797.04 1881.97 1915.07 1440 0.08 3795.30 1888.50 1906.80 Maximum Difference 2240.12 25 Year Storage Calculations ‐ Basin 3 (Pre) Rainfall Duration  (minutes) Intensity (inches/Hour)       EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference ft3  EQ 5‐4 C 0.370  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 49780.00 ft2 5 4.67 597.33 10.27 587.05 Tc 5 Minutes 10 3.41 872.33 15.41 856.91 Qa 0.034 ft3 15 2.78 1066.74 20.55 1046.19 P24(25)0.952 20 2.42 1238.14 25.69 1212.45 25 2.06 1317.44 30.82 1286.62 30 1.70 1304.65 35.96 1268.69 35 1.58 1410.47 41.10 1369.37 40 1.45 1484.40 46.24 1438.16 45 1.33 1526.43 51.37 1475.06 50 1.20 1536.57 56.51 1480.06 55 1.08 1514.82 61.65 1453.17 60 0.95 1461.21 66.79 1394.42 65 0.92 1523.95 71.92 1452.02 Storage Volume 478.97 70 0.88 1577.60 77.06 1500.54 75 0.85 1622.18 82.20 1539.98 80 0.81 1657.67 87.34 1570.34 85 0.77 1684.09 92.47 1591.61 90 0.74 1701.42 97.61 1603.81 95 0.70 1709.67 102.75 1606.92 100 0.67 1708.84 107.89 1600.95 105 0.63 1698.92 113.02 1585.90 110 0.60 1679.93 118.16 1561.77 115 0.56 1651.85 123.30 1528.56 120 0.53 1614.70 128.44 1486.26 125 0.51 1638.01 133.57 1504.44 130 0.50 1657.80 138.71 1519.09 135 0.48 1674.08 143.85 1530.23 140 0.47 1686.84 148.99 1537.85 145 0.46 1696.08 154.12 1541.96 150 0.44 1701.80 159.26 1542.54 155 0.43 1704.01 164.40 1539.61 160 0.42 1702.70 169.53 1533.16 165 0.40 1697.87 174.67 1523.20 170 0.39 1689.52 179.81 1509.71 175 0.37 1677.66 184.95 1492.71 180 0.36 1662.28 190.08 1472.19 185 0.36 1687.55 195.22 1492.33 190 0.35 1711.69 200.36 1511.33 195 0.35 1734.71 205.50 1529.21 200 0.34 1756.59 210.63 1545.95 205 0.34 1777.34 215.77 1561.57 210 0.33 1796.96 220.91 1576.05 215 0.33 1815.46 226.05 1589.41 220 0.33 1832.82 231.18 1601.64 225 0.32 1849.05 236.32 1612.73 230 0.32 1864.16 241.46 1622.70 235 0.31 1878.13 246.60 1631.53 240 0.31 1890.97 251.73 1639.24 245 0.30 1902.69 256.87 1645.82 250 0.30 1913.27 262.01 1651.26 255 0.29 1922.73 267.15 1655.58 260 0.29 1931.05 272.28 1658.77 265 0.29 1938.24 277.42 1660.82 270 0.28 1944.31 282.56 1661.75 275 0.28 1949.24 287.70 1661.55 280 0.27 1953.05 292.83 1660.22 285 0.27 1955.72 297.97 1657.75 290 0.26 1957.27 303.11 1654.16 295 0.26 1957.68 308.25 1649.44 300 0.25 1956.97 313.38 1643.59 305 0.25 1955.13 318.52 1636.61 310 0.25 1952.15 323.66 1628.49 315 0.24 1948.05 328.79 1619.25 320 0.24 1942.81 333.93 1608.88 325 0.23 1936.45 339.07 1597.38 330 0.23 1928.96 344.21 1584.75 335 0.22 1920.33 349.34 1570.99 340 0.22 1910.58 354.48 1556.10 345 0.22 1899.70 359.62 1540.08 350 0.21 1887.68 364.76 1522.93 355 0.21 1874.54 369.89 1504.65 360 0.20 1860.28 375.03 1485.25 365 0.20 1876.39 380.17 1496.22 370 0.20 1892.23 385.31 1506.93 375 0.20 1907.81 390.44 1517.37 380 0.20 1923.12 395.58 1527.54 385 0.20 1938.17 400.72 1537.45 390 0.20 1952.95 405.86 1547.09 395 0.19 1967.46 410.99 1556.47 400 0.19 1981.70 416.13 1565.57 405 0.19 1995.68 421.27 1574.42 410 0.19 2009.40 426.41 1582.99 415 0.19 2022.84 431.54 1591.30 420 0.19 2036.02 436.68 1599.34 425 0.19 2048.94 441.82 1607.12 430 0.19 2061.58 446.96 1614.63 435 0.19 2073.96 452.09 1621.87 440 0.19 2086.08 457.23 1628.85 445 0.18 2097.92 462.37 1635.56 450 0.18 2109.50 467.51 1642.00 455 0.18 2120.82 472.64 1648.18 460 0.18 2131.87 477.78 1654.09 465 0.18 2142.65 482.92 1659.73 470 0.18 2153.16 488.05 1665.11 475 0.18 2163.41 493.19 1670.22 480 0.18 2173.39 498.33 1675.06 485 0.18 2183.11 503.47 1679.64 490 0.17 2192.56 508.60 1683.95 495 0.17 2201.74 513.74 1688.00 500 0.17 2210.66 518.88 1691.78 505 0.17 2219.31 524.02 1695.29 510 0.17 2227.69 529.15 1698.54 515 0.17 2235.81 534.29 1701.52 520 0.17 2243.66 539.43 1704.23 525 0.17 2251.24 544.57 1706.67 530 0.17 2258.56 549.70 1708.85 535 0.17 2265.61 554.84 1710.77 540 0.16 2272.39 559.98 1712.41 545 0.16 2278.91 565.12 1713.79 550 0.16 2285.16 570.25 1714.91 555 0.16 2291.15 575.39 1715.76 560 0.16 2296.87 580.53 1716.34 565 0.16 2302.32 585.67 1716.65 570 0.16 2307.50 590.80 1716.70 575 0.16 2312.42 595.94 1716.48 580 0.16 2317.07 601.08 1716.00 585 0.16 2321.46 606.22 1715.25 590 0.15 2325.58 611.35 1714.23 595 0.15 2329.43 616.49 1712.94 600 0.15 2333.02 621.63 1711.39 605 0.15 2336.34 626.77 1709.58 610 0.15 2339.39 631.90 1707.49 615 0.15 2342.18 637.04 1705.14 620 0.15 2344.70 642.18 1702.52 625 0.15 2346.96 647.31 1699.64 630 0.15 2348.94 652.45 1696.49 635 0.14 2350.67 657.59 1693.08 640 0.14 2352.12 662.73 1689.39 645 0.14 2353.31 667.86 1685.44 650 0.14 2354.23 673.00 1681.23 655 0.14 2354.89 678.14 1676.75 660 0.14 2355.28 683.28 1672.00 665 0.14 2355.40 688.41 1666.98 670 0.14 2355.25 693.55 1661.70 675 0.14 2354.84 698.69 1656.15 680 0.14 2354.17 703.83 1650.34 685 0.13 2353.22 708.96 1644.26 690 0.13 2352.01 714.10 1637.91 695 0.13 2350.54 719.24 1631.30 700 0.13 2348.79 724.38 1624.42 705 0.13 2346.78 729.51 1617.27 710 0.13 2344.51 734.65 1609.86 715 0.13 2341.97 739.79 1602.18 720 0.13 2339.16 744.93 1594.24 725 0.13 2349.48 750.06 1599.42 730 0.13 2359.72 755.20 1604.52 735 0.13 2369.88 760.34 1609.54 740 0.13 2379.95 765.48 1614.47 745 0.13 2389.94 770.61 1619.33 750 0.13 2399.85 775.75 1624.10 755 0.12 2409.68 780.89 1628.80 760 0.12 2419.43 786.03 1633.41 765 0.12 2429.10 791.16 1637.93 770 0.12 2438.68 796.30 1642.38 775 0.12 2448.18 801.44 1646.75 780 0.12 2457.60 806.57 1651.03 785 0.12 2466.94 811.71 1655.23 790 0.12 2476.20 816.85 1659.35 795 0.12 2485.38 821.99 1663.39 800 0.12 2494.47 827.12 1667.35 805 0.12 2503.48 832.26 1671.22 810 0.12 2512.41 837.40 1675.01 815 0.12 2521.26 842.54 1678.72 820 0.12 2530.03 847.67 1682.35 825 0.12 2538.71 852.81 1685.90 830 0.12 2547.32 857.95 1689.37 835 0.12 2555.84 863.09 1692.75 840 0.12 2564.28 868.22 1696.05 845 0.12 2572.64 873.36 1699.28 850 0.12 2580.91 878.50 1702.41 855 0.12 2589.11 883.64 1705.47 860 0.12 2597.22 888.77 1708.45 865 0.12 2605.25 893.91 1711.34 870 0.12 2613.20 899.05 1714.15 875 0.12 2621.07 904.19 1716.89 880 0.12 2628.86 909.32 1719.53 885 0.12 2636.56 914.46 1722.10 890 0.12 2644.19 919.60 1724.59 895 0.12 2651.73 924.74 1726.99 900 0.12 2659.19 929.87 1729.31 905 0.12 2666.56 935.01 1731.55 910 0.11 2673.86 940.15 1733.71 915 0.11 2681.07 945.29 1735.79 920 0.11 2688.21 950.42 1737.78 925 0.11 2695.26 955.56 1739.70 930 0.11 2702.23 960.70 1741.53 935 0.11 2709.11 965.83 1743.28 940 0.11 2715.92 970.97 1744.95 945 0.11 2722.64 976.11 1746.53 950 0.11 2729.29 981.25 1748.04 955 0.11 2735.85 986.38 1749.46 960 0.11 2742.33 991.52 1750.80 965 0.11 2748.72 996.66 1752.06 970 0.11 2755.04 1001.80 1753.24 975 0.11 2761.27 1006.93 1754.34 980 0.11 2767.42 1012.07 1755.35 985 0.11 2773.49 1017.21 1756.28 990 0.11 2779.48 1022.35 1757.14 995 0.11 2785.39 1027.48 1757.91 1000 0.11 2791.21 1032.62 1758.59 1005 0.11 2796.96 1037.76 1759.20 1010 0.11 2802.62 1042.90 1759.72 1015 0.11 2808.20 1048.03 1760.17 1020 0.11 2813.70 1053.17 1760.53 1025 0.11 2819.11 1058.31 1760.81 1030 0.11 2824.45 1063.45 1761.00 1035 0.11 2829.70 1068.58 1761.12 1040 0.11 2834.87 1073.72 1761.15 1045 0.11 2839.96 1078.86 1761.10 1050 0.11 2844.97 1084.00 1760.98 1055 0.11 2849.90 1089.13 1760.76 1060 0.11 2854.74 1094.27 1760.47 1065 0.10 2859.50 1099.41 1760.10 1070 0.10 2864.19 1104.55 1759.64 1075 0.10 2868.78 1109.68 1759.10 1080 0.10 2873.30 1114.82 1758.48 1085 0.10 2877.74 1119.96 1757.78 1090 0.10 2882.09 1125.09 1757.00 1095 0.10 2886.37 1130.23 1756.13 1100 0.10 2890.56 1135.37 1755.19 1105 0.10 2894.66 1140.51 1754.16 1110 0.10 2898.69 1145.64 1753.05 1115 0.10 2902.64 1150.78 1751.86 1120 0.10 2906.50 1155.92 1750.58 1125 0.10 2910.28 1161.06 1749.23 1130 0.10 2913.98 1166.19 1747.79 1135 0.10 2917.60 1171.33 1746.27 1140 0.10 2921.14 1176.47 1744.67 1145 0.10 2924.60 1181.61 1742.99 1150 0.10 2927.97 1186.74 1741.22 1155 0.10 2931.26 1191.88 1739.38 1160 0.10 2934.47 1197.02 1737.45 1165 0.10 2937.60 1202.16 1735.44 1170 0.10 2940.65 1207.29 1733.35 1175 0.10 2943.61 1212.43 1731.18 1180 0.10 2946.49 1217.57 1728.93 1185 0.10 2949.30 1222.71 1726.59 1190 0.10 2952.02 1227.84 1724.17 1195 0.10 2954.65 1232.98 1721.67 1200 0.10 2957.21 1238.12 1719.09 1205 0.10 2959.68 1243.26 1716.43 1210 0.10 2962.08 1248.39 1713.68 1215 0.10 2964.39 1253.53 1710.86 1220 0.10 2966.62 1258.67 1707.95 1225 0.09 2968.77 1263.81 1704.96 1230 0.09 2970.83 1268.94 1701.89 1235 0.09 2972.82 1274.08 1698.74 1240 0.09 2974.72 1279.22 1695.50 1245 0.09 2976.54 1284.35 1692.19 1250 0.09 2978.28 1289.49 1688.79 1255 0.09 2979.94 1294.63 1685.31 1260 0.09 2981.51 1299.77 1681.75 1265 0.09 2983.01 1304.90 1678.10 1270 0.09 2984.42 1310.04 1674.38 1275 0.09 2985.75 1315.18 1670.57 1280 0.09 2987.00 1320.32 1666.68 1285 0.09 2988.17 1325.45 1662.71 1290 0.09 2989.25 1330.59 1658.66 1295 0.09 2990.25 1335.73 1654.53 1300 0.09 2991.18 1340.87 1650.31 1305 0.09 2992.02 1346.00 1646.01 1310 0.09 2992.78 1351.14 1641.63 1315 0.09 2993.45 1356.28 1637.17 1320 0.09 2994.05 1361.42 1632.63 1325 0.09 2994.56 1366.55 1628.01 1330 0.09 2994.99 1371.69 1623.30 1335 0.09 2995.34 1376.83 1618.51 1340 0.09 2995.61 1381.97 1613.65 1345 0.09 2995.80 1387.10 1608.69 1350 0.09 2995.90 1392.24 1603.66 1355 0.09 2995.93 1397.38 1598.55 1360 0.09 2995.87 1402.52 1593.35 1365 0.09 2995.73 1407.65 1588.07 1370 0.09 2995.50 1412.79 1582.71 1375 0.09 2995.20 1417.93 1577.27 1380 0.08 2994.82 1423.07 1571.75 1385 0.08 2994.35 1428.20 1566.15 1390 0.08 2993.80 1433.34 1560.46 1395 0.08 2993.17 1438.48 1554.69 1400 0.08 2992.46 1443.61 1548.84 1405 0.08 2991.66 1448.75 1542.91 1410 0.08 2990.79 1453.89 1536.90 1415 0.08 2989.83 1459.03 1530.80 1420 0.08 2988.79 1464.16 1524.63 1425 0.08 2987.67 1469.30 1518.37 1430 0.08 2986.47 1474.44 1512.03 1435 0.08 2985.18 1479.58 1505.60 1440 0.08 2983.81 1484.71 1499.10 Maximum Difference 1761.15 25 Year Storage Calculations ‐ Basin 4 (Developed) Rainfall Duration  (minutes) Intensity (inches/Hour)      EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference  ft3 EQ 5‐4 C 0.595  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 17060.00 ft2 5 4.67 329.00 5.66 323.34 Tc 5 Minutes 10 3.41 480.46 8.49 471.97 Qa 0.019 ft3 15 2.78 587.54 11.32 576.22 P24(25)0.952 20 2.42 681.94 14.15 667.80 25 2.06 725.62 16.98 708.64 30 1.70 718.58 19.81 698.77 35 1.58 776.86 22.64 754.22 40 1.45 817.58 25.47 792.11 45 1.33 840.73 28.30 812.43 50 1.20 846.31 31.13 815.19 55 1.08 834.33 33.96 800.38 60 0.95 804.81 36.78 768.02 65 0.92 839.36 39.61 799.75 70 0.88 868.91 42.44 826.47 75 0.85 893.47 45.27 848.19 80 0.81 913.02 48.10 864.91 85 0.77 927.56 50.93 876.63 90 0.74 937.11 53.76 883.35 95 0.70 941.65 56.59 885.06 100 0.67 941.19 59.42 881.77 105 0.63 935.73 62.25 873.48 110 0.60 925.27 65.08 860.19 115 0.56 909.81 67.91 841.90 120 0.53 889.34 70.74 818.60 125 0.51 902.18 73.57 828.61 130 0.50 913.09 76.40 836.69 135 0.48 922.05 79.23 842.82 140 0.47 929.08 82.06 847.02 145 0.46 934.17 84.89 849.28 150 0.44 937.32 87.72 849.60 155 0.43 938.54 90.55 847.99 160 0.42 937.81 93.38 844.44 165 0.40 935.15 96.21 838.95 170 0.39 930.56 99.04 831.52 175 0.37 924.02 101.87 822.16 180 0.36 915.55 104.69 810.86 185 0.36 929.47 107.52 821.95 190 0.35 942.77 110.35 832.41 195 0.35 955.44 113.18 842.26 200 0.34 967.50 116.01 851.48 205 0.34 978.93 118.84 860.08 210 0.33 989.73 121.67 868.06 215 0.33 999.92 124.50 875.42 220 0.33 1009.48 127.33 882.15 225 0.32 1018.42 130.16 888.26 230 0.32 1026.74 132.99 893.75 235 0.31 1034.44 135.82 898.62 240 0.31 1041.51 138.65 902.86 245 0.30 1047.96 141.48 906.48 250 0.30 1053.79 144.31 909.48 255 0.29 1059.00 147.14 911.86 260 0.29 1063.59 149.97 913.62 265 0.29 1067.55 152.80 914.75 270 0.28 1070.89 155.63 915.26 275 0.28 1073.61 158.46 915.15 280 0.27 1075.70 161.29 914.42 285 0.27 1077.18 164.12 913.06 290 0.26 1078.03 166.95 911.08 295 0.26 1078.26 169.78 908.48 300 0.25 1077.86 172.61 905.26 305 0.25 1076.85 175.43 901.41 310 0.25 1075.21 178.26 896.94 315 0.24 1072.95 181.09 891.85 320 0.24 1070.06 183.92 886.14 325 0.23 1066.56 186.75 879.81 330 0.23 1062.43 189.58 872.85 335 0.22 1057.68 192.41 865.27 340 0.22 1052.31 195.24 857.07 345 0.22 1046.32 198.07 848.24 350 0.21 1039.70 200.90 838.80 355 0.21 1032.46 203.73 828.73 360 0.20 1024.61 206.56 818.05 365 0.20 1033.48 209.39 824.09 370 0.20 1042.21 212.22 829.99 375 0.20 1050.79 215.05 835.74 380 0.20 1059.22 217.88 841.34 385 0.20 1067.51 220.71 846.80 390 0.20 1075.65 223.54 852.11 395 0.19 1083.64 226.37 857.27 400 0.19 1091.49 229.20 862.29 405 0.19 1099.18 232.03 867.16 410 0.19 1106.74 234.86 871.88 415 0.19 1114.14 237.69 876.46 420 0.19 1121.40 240.52 880.89 425 0.19 1128.51 243.34 885.17 430 0.19 1135.48 246.17 889.31 435 0.19 1142.30 249.00 893.29 440 0.19 1148.97 251.83 897.14 445 0.18 1155.50 254.66 900.83 450 0.18 1161.87 257.49 904.38 455 0.18 1168.11 260.32 907.78 460 0.18 1174.19 263.15 911.04 465 0.18 1180.13 265.98 914.15 470 0.18 1185.92 268.81 917.11 475 0.18 1191.57 271.64 919.93 480 0.18 1197.06 274.47 922.59 485 0.18 1202.42 277.30 925.11 490 0.17 1207.62 280.13 927.49 495 0.17 1212.68 282.96 929.72 500 0.17 1217.59 285.79 931.80 505 0.17 1222.35 288.62 933.73 510 0.17 1226.97 291.45 935.52 515 0.17 1231.44 294.28 937.16 520 0.17 1235.76 297.11 938.66 525 0.17 1239.94 299.94 940.00 530 0.17 1243.97 302.77 941.20 535 0.17 1247.85 305.60 942.26 540 0.16 1251.59 308.43 943.17 545 0.16 1255.18 311.26 943.93 550 0.16 1258.62 314.08 944.54 555 0.16 1261.92 316.91 945.01 560 0.16 1265.07 319.74 945.33 565 0.16 1268.07 322.57 945.50 570 0.16 1270.93 325.40 945.53 575 0.16 1273.64 328.23 945.41 580 0.16 1276.20 331.06 945.14 585 0.16 1278.62 333.89 944.72 590 0.15 1280.89 336.72 944.16 595 0.15 1283.01 339.55 943.46 600 0.15 1284.98 342.38 942.60 605 0.15 1286.81 345.21 941.60 610 0.15 1288.49 348.04 940.45 615 0.15 1290.03 350.87 939.16 620 0.15 1291.42 353.70 937.72 625 0.15 1292.66 356.53 936.13 630 0.15 1293.75 359.36 934.40 635 0.14 1294.70 362.19 932.51 640 0.14 1295.50 365.02 930.49 645 0.14 1296.16 367.85 928.31 650 0.14 1296.67 370.68 925.99 655 0.14 1297.03 373.51 923.52 660 0.14 1297.24 376.34 920.90 665 0.14 1297.31 379.17 918.14 670 0.14 1297.23 382.00 915.23 675 0.14 1297.00 384.82 912.18 680 0.14 1296.63 387.65 908.98 685 0.13 1296.11 390.48 905.63 690 0.13 1295.44 393.31 902.13 695 0.13 1294.63 396.14 898.49 700 0.13 1293.67 398.97 894.70 705 0.13 1292.56 401.80 890.76 710 0.13 1291.31 404.63 886.68 715 0.13 1289.91 407.46 882.45 720 0.13 1288.37 410.29 878.08 725 0.13 1294.05 413.12 880.93 730 0.13 1299.69 415.95 883.74 735 0.13 1305.28 418.78 886.50 740 0.13 1310.83 421.61 889.22 745 0.13 1316.34 424.44 891.90 750 0.13 1321.79 427.27 894.53 755 0.12 1327.21 430.10 897.11 760 0.12 1332.58 432.93 899.65 765 0.12 1337.90 435.76 902.14 770 0.12 1343.18 438.59 904.59 775 0.12 1348.41 441.42 907.00 780 0.12 1353.60 444.25 909.36 785 0.12 1358.75 447.08 911.67 790 0.12 1363.84 449.91 913.94 795 0.12 1368.90 452.73 916.16 800 0.12 1373.91 455.56 918.34 805 0.12 1378.87 458.39 920.48 810 0.12 1383.79 461.22 922.57 815 0.12 1388.66 464.05 924.61 820 0.12 1393.49 466.88 926.61 825 0.12 1398.27 469.71 928.56 830 0.12 1403.01 472.54 930.47 835 0.12 1407.71 475.37 932.34 840 0.12 1412.36 478.20 934.15 845 0.12 1416.96 481.03 935.93 850 0.12 1421.52 483.86 937.66 855 0.12 1426.03 486.69 939.34 860 0.12 1430.50 489.52 940.98 865 0.12 1434.92 492.35 942.57 870 0.12 1439.30 495.18 944.12 875 0.12 1443.64 498.01 945.63 880 0.12 1447.92 500.84 947.09 885 0.12 1452.17 503.67 948.50 890 0.12 1456.37 506.50 949.87 895 0.12 1460.52 509.33 951.19 900 0.12 1464.63 512.16 952.47 905 0.12 1468.69 514.99 953.71 910 0.11 1472.71 517.82 954.90 915 0.11 1476.68 520.65 956.04 920 0.11 1480.61 523.47 957.14 925 0.11 1484.50 526.30 958.19 930 0.11 1488.33 529.13 959.20 935 0.11 1492.13 531.96 960.16 940 0.11 1495.88 534.79 961.08 945 0.11 1499.58 537.62 961.96 950 0.11 1503.24 540.45 962.79 955 0.11 1506.85 543.28 963.57 960 0.11 1510.42 546.11 964.31 965 0.11 1513.94 548.94 965.00 970 0.11 1517.42 551.77 965.65 975 0.11 1520.86 554.60 966.26 980 0.11 1524.24 557.43 966.81 985 0.11 1527.59 560.26 967.33 990 0.11 1530.89 563.09 967.80 995 0.11 1534.14 565.92 968.22 1000 0.11 1537.35 568.75 968.60 1005 0.11 1540.51 571.58 968.93 1010 0.11 1543.63 574.41 969.22 1015 0.11 1546.70 577.24 969.47 1020 0.11 1549.73 580.07 969.66 1025 0.11 1552.71 582.90 969.82 1030 0.11 1555.65 585.73 969.93 1035 0.11 1558.55 588.56 969.99 1040 0.11 1561.39 591.38 970.01 1045 0.11 1564.20 594.21 969.98 1050 0.11 1566.96 597.04 969.91 1055 0.11 1569.67 599.87 969.80 1060 0.11 1572.34 602.70 969.63 1065 0.10 1574.96 605.53 969.43 1070 0.10 1577.54 608.36 969.18 1075 0.10 1580.07 611.19 968.88 1080 0.10 1582.56 614.02 968.54 1085 0.10 1585.00 616.85 968.15 1090 0.10 1587.40 619.68 967.72 1095 0.10 1589.75 622.51 967.24 1100 0.10 1592.06 625.34 966.72 1105 0.10 1594.33 628.17 966.16 1110 0.10 1596.54 631.00 965.55 1115 0.10 1598.72 633.83 964.89 1120 0.10 1600.85 636.66 964.19 1125 0.10 1602.93 639.49 963.44 1130 0.10 1604.97 642.32 962.65 1135 0.10 1606.96 645.15 961.81 1140 0.10 1608.91 647.98 960.93 1145 0.10 1610.81 650.81 960.00 1150 0.10 1612.67 653.64 959.03 1155 0.10 1614.48 656.47 958.02 1160 0.10 1616.25 659.30 956.96 1165 0.10 1617.97 662.12 955.85 1170 0.10 1619.65 664.95 954.70 1175 0.10 1621.28 667.78 953.50 1180 0.10 1622.87 670.61 952.26 1185 0.10 1624.42 673.44 950.97 1190 0.10 1625.91 676.27 949.64 1195 0.10 1627.37 679.10 948.26 1200 0.10 1628.77 681.93 946.84 1205 0.10 1630.14 684.76 945.38 1210 0.10 1631.46 687.59 943.86 1215 0.10 1632.73 690.42 942.31 1220 0.10 1633.96 693.25 940.71 1225 0.09 1635.14 696.08 939.06 1230 0.09 1636.28 698.91 937.37 1235 0.09 1637.37 701.74 935.63 1240 0.09 1638.42 704.57 933.85 1245 0.09 1639.42 707.40 932.02 1250 0.09 1640.38 710.23 930.15 1255 0.09 1641.29 713.06 928.23 1260 0.09 1642.16 715.89 926.27 1265 0.09 1642.98 718.72 924.27 1270 0.09 1643.76 721.55 922.21 1275 0.09 1644.49 724.38 920.12 1280 0.09 1645.18 727.21 917.98 1285 0.09 1645.82 730.03 915.79 1290 0.09 1646.42 732.86 913.56 1295 0.09 1646.98 735.69 911.28 1300 0.09 1647.48 738.52 908.96 1305 0.09 1647.95 741.35 906.59 1310 0.09 1648.36 744.18 904.18 1315 0.09 1648.74 747.01 901.72 1320 0.09 1649.06 749.84 899.22 1325 0.09 1649.35 752.67 896.68 1330 0.09 1649.58 755.50 894.08 1335 0.09 1649.78 758.33 891.45 1340 0.09 1649.93 761.16 888.76 1345 0.09 1650.03 763.99 886.04 1350 0.09 1650.09 766.82 883.27 1355 0.09 1650.10 769.65 880.45 1360 0.09 1650.07 772.48 877.59 1365 0.09 1649.99 775.31 874.68 1370 0.09 1649.87 778.14 871.73 1375 0.09 1649.70 780.97 868.73 1380 0.08 1649.49 783.80 865.69 1385 0.08 1649.23 786.63 862.60 1390 0.08 1648.93 789.46 859.47 1395 0.08 1648.58 792.29 856.29 1400 0.08 1648.19 795.12 853.07 1405 0.08 1647.75 797.95 849.81 1410 0.08 1647.27 800.77 846.49 1415 0.08 1646.74 803.60 843.14 1420 0.08 1646.17 806.43 839.73 1425 0.08 1645.55 809.26 836.29 1430 0.08 1644.89 812.09 832.80 1435 0.08 1644.18 814.92 829.26 1440 0.08 1643.43 817.75 825.68 Maximum Difference 970.01 25 Year Storage Calculations ‐ Basin 4 (Pre) Rainfall Duration  (minutes) Intensity (inches/Hour)       EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference ft3  EQ 5‐4 C 0.370  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 17060.00 ft2 5 4.67 204.71 3.52 201.19 Tc 5 Minutes 10 3.41 298.95 5.28 293.67 Qa 0.012 ft3 15 2.78 365.58 7.04 358.54 P24(25)0.952 20 2.42 424.32 8.80 415.52 25 2.06 451.50 10.56 440.93 30 1.70 447.11 12.32 434.79 35 1.58 483.38 14.09 469.29 40 1.45 508.71 15.85 492.87 45 1.33 523.12 17.61 505.51 50 1.20 526.60 19.37 507.23 55 1.08 519.14 21.13 498.01 60 0.95 500.77 22.89 477.88 65 0.92 522.27 24.65 497.62 Storage Volume 366.45 70 0.88 540.66 26.41 514.25 75 0.85 555.93 28.17 527.76 80 0.81 568.10 29.93 538.17 85 0.77 577.15 31.69 545.46 90 0.74 583.09 33.45 549.64 95 0.70 585.92 35.21 550.70 100 0.67 585.63 36.97 548.66 105 0.63 582.23 38.73 543.50 110 0.60 575.73 40.49 535.23 115 0.56 566.10 42.26 523.85 120 0.53 553.37 44.02 509.35 125 0.51 561.36 45.78 515.58 130 0.50 568.14 47.54 520.60 135 0.48 573.72 49.30 524.42 140 0.47 578.09 51.06 527.03 145 0.46 581.26 52.82 528.44 150 0.44 583.22 54.58 528.64 155 0.43 583.98 56.34 527.64 160 0.42 583.53 58.10 525.43 165 0.40 581.87 59.86 522.01 170 0.39 579.01 61.62 517.39 175 0.37 574.95 63.38 511.56 180 0.36 569.68 65.14 504.53 185 0.36 578.34 66.90 511.43 190 0.35 586.61 68.66 517.95 195 0.35 594.50 70.43 524.07 200 0.34 602.00 72.19 529.81 205 0.34 609.11 73.95 535.16 210 0.33 615.83 75.71 540.13 215 0.33 622.17 77.47 544.70 220 0.33 628.12 79.23 548.89 225 0.32 633.69 80.99 552.70 230 0.32 638.86 82.75 556.11 235 0.31 643.65 84.51 559.14 240 0.31 648.05 86.27 561.78 245 0.30 652.07 88.03 564.03 250 0.30 655.69 89.79 565.90 255 0.29 658.93 91.55 567.38 260 0.29 661.79 93.31 568.47 265 0.29 664.25 95.07 569.18 270 0.28 666.33 96.83 569.50 275 0.28 668.02 98.60 569.43 280 0.27 669.33 100.36 568.97 285 0.27 670.24 102.12 568.13 290 0.26 670.77 103.88 566.89 295 0.26 670.91 105.64 565.28 300 0.25 670.67 107.40 563.27 305 0.25 670.04 109.16 560.88 310 0.25 669.02 110.92 558.10 315 0.24 667.61 112.68 554.93 320 0.24 665.82 114.44 551.38 325 0.23 663.64 116.20 547.43 330 0.23 661.07 117.96 543.11 335 0.22 658.11 119.72 538.39 340 0.22 654.77 121.48 533.29 345 0.22 651.04 123.24 527.80 350 0.21 646.92 125.01 521.92 355 0.21 642.42 126.77 515.65 360 0.20 637.53 128.53 509.01 365 0.20 643.05 130.29 512.77 370 0.20 648.48 132.05 516.44 375 0.20 653.82 133.81 520.01 380 0.20 659.07 135.57 523.50 385 0.20 664.23 137.33 526.90 390 0.20 669.29 139.09 530.20 395 0.19 674.26 140.85 533.41 400 0.19 679.15 142.61 536.53 405 0.19 683.94 144.37 539.56 410 0.19 688.64 146.13 542.50 415 0.19 693.24 147.89 545.35 420 0.19 697.76 149.65 548.11 425 0.19 702.19 151.41 550.77 430 0.19 706.52 153.18 553.35 435 0.19 710.76 154.94 555.83 440 0.19 714.91 156.70 558.22 445 0.18 718.98 158.46 560.52 450 0.18 722.94 160.22 562.73 455 0.18 726.82 161.98 564.84 460 0.18 730.61 163.74 566.87 465 0.18 734.30 165.50 568.80 470 0.18 737.91 167.26 570.65 475 0.18 741.42 169.02 572.40 480 0.18 744.84 170.78 574.06 485 0.18 748.17 172.54 575.63 490 0.17 751.41 174.30 577.10 495 0.17 754.55 176.06 578.49 500 0.17 757.61 177.82 579.79 505 0.17 760.57 179.58 580.99 510 0.17 763.45 181.35 582.10 515 0.17 766.23 183.11 583.12 520 0.17 768.92 184.87 584.05 525 0.17 771.52 186.63 584.89 530 0.17 774.03 188.39 585.64 535 0.17 776.44 190.15 586.29 540 0.16 778.77 191.91 586.86 545 0.16 781.00 193.67 587.33 550 0.16 783.14 195.43 587.71 555 0.16 785.19 197.19 588.00 560 0.16 787.15 198.95 588.20 565 0.16 789.02 200.71 588.31 570 0.16 790.80 202.47 588.33 575 0.16 792.49 204.23 588.25 580 0.16 794.08 205.99 588.09 585 0.16 795.58 207.75 587.83 590 0.15 796.99 209.52 587.48 595 0.15 798.32 211.28 587.04 600 0.15 799.54 213.04 586.51 605 0.15 800.68 214.80 585.88 610 0.15 801.73 216.56 585.17 615 0.15 802.68 218.32 584.37 620 0.15 803.55 220.08 583.47 625 0.15 804.32 221.84 582.48 630 0.15 805.00 223.60 581.40 635 0.14 805.59 225.36 580.23 640 0.14 806.09 227.12 578.97 645 0.14 806.50 228.88 577.62 650 0.14 806.81 230.64 576.17 655 0.14 807.04 232.40 574.63 660 0.14 807.17 234.16 573.01 665 0.14 807.21 235.92 571.29 670 0.14 807.16 237.69 569.48 675 0.14 807.02 239.45 567.58 680 0.14 806.79 241.21 565.58 685 0.13 806.47 242.97 563.50 690 0.13 806.05 244.73 561.33 695 0.13 805.55 246.49 559.06 700 0.13 804.95 248.25 556.70 705 0.13 804.26 250.01 554.25 710 0.13 803.48 251.77 551.71 715 0.13 802.61 253.53 549.08 720 0.13 801.65 255.29 546.36 725 0.13 805.19 257.05 548.13 730 0.13 808.69 258.81 549.88 735 0.13 812.18 260.57 551.60 740 0.13 815.63 262.33 553.29 745 0.13 819.05 264.10 554.96 750 0.13 822.45 265.86 556.59 755 0.12 825.82 267.62 558.20 760 0.12 829.16 269.38 559.78 765 0.12 832.47 271.14 561.33 770 0.12 835.76 272.90 562.86 775 0.12 839.01 274.66 564.35 780 0.12 842.24 276.42 565.82 785 0.12 845.44 278.18 567.26 790 0.12 848.61 279.94 568.67 795 0.12 851.76 281.70 570.06 800 0.12 854.87 283.46 571.41 805 0.12 857.96 285.22 572.74 810 0.12 861.02 286.98 574.04 815 0.12 864.06 288.74 575.31 820 0.12 867.06 290.50 576.56 825 0.12 870.04 292.27 577.77 830 0.12 872.99 294.03 578.96 835 0.12 875.91 295.79 580.12 840 0.12 878.80 297.55 581.25 845 0.12 881.66 299.31 582.36 850 0.12 884.50 301.07 583.43 855 0.12 887.31 302.83 584.48 860 0.12 890.09 304.59 585.50 865 0.12 892.84 306.35 586.49 870 0.12 895.57 308.11 587.45 875 0.12 898.26 309.87 588.39 880 0.12 900.93 311.63 589.30 885 0.12 903.57 313.39 590.18 890 0.12 906.18 315.15 591.03 895 0.12 908.77 316.91 591.85 900 0.12 911.32 318.67 592.65 905 0.12 913.85 320.44 593.42 910 0.11 916.35 322.20 594.16 915 0.11 918.83 323.96 594.87 920 0.11 921.27 325.72 595.55 925 0.11 923.69 327.48 596.21 930 0.11 926.07 329.24 596.84 935 0.11 928.43 331.00 597.44 940 0.11 930.77 332.76 598.01 945 0.11 933.07 334.52 598.55 950 0.11 935.35 336.28 599.07 955 0.11 937.60 338.04 599.55 960 0.11 939.82 339.80 600.01 965 0.11 942.01 341.56 600.45 970 0.11 944.17 343.32 600.85 975 0.11 946.31 345.08 601.23 980 0.11 948.42 346.84 601.57 985 0.11 950.50 348.61 601.89 990 0.11 952.55 350.37 602.18 995 0.11 954.57 352.13 602.45 1000 0.11 956.57 353.89 602.68 1005 0.11 958.54 355.65 602.89 1010 0.11 960.48 357.41 603.07 1015 0.11 962.39 359.17 603.22 1020 0.11 964.28 360.93 603.35 1025 0.11 966.13 362.69 603.44 1030 0.11 967.96 364.45 603.51 1035 0.11 969.76 366.21 603.55 1040 0.11 971.53 367.97 603.56 1045 0.11 973.28 369.73 603.54 1050 0.11 974.99 371.49 603.50 1055 0.11 976.68 373.25 603.43 1060 0.11 978.34 375.02 603.33 1065 0.10 979.97 376.78 603.20 1070 0.10 981.58 378.54 603.04 1075 0.10 983.16 380.30 602.86 1080 0.10 984.70 382.06 602.65 1085 0.10 986.22 383.82 602.41 1090 0.10 987.72 385.58 602.14 1095 0.10 989.18 387.34 601.84 1100 0.10 990.62 389.10 601.52 1105 0.10 992.02 390.86 601.16 1110 0.10 993.40 392.62 600.78 1115 0.10 994.76 394.38 600.37 1120 0.10 996.08 396.14 599.94 1125 0.10 997.38 397.90 599.47 1130 0.10 998.65 399.66 598.98 1135 0.10 999.89 401.42 598.46 1140 0.10 1001.10 403.19 597.91 1145 0.10 1002.28 404.95 597.34 1150 0.10 1003.44 406.71 596.73 1155 0.10 1004.57 408.47 596.10 1160 0.10 1005.67 410.23 595.44 1165 0.10 1006.74 411.99 594.75 1170 0.10 1007.78 413.75 594.03 1175 0.10 1008.80 415.51 593.29 1180 0.10 1009.79 417.27 592.52 1185 0.10 1010.75 419.03 591.72 1190 0.10 1011.68 420.79 590.89 1195 0.10 1012.58 422.55 590.03 1200 0.10 1013.46 424.31 589.15 1205 0.10 1014.31 426.07 588.23 1210 0.10 1015.13 427.83 587.29 1215 0.10 1015.92 429.59 586.32 1220 0.10 1016.68 431.36 585.33 1225 0.09 1017.42 433.12 584.30 1230 0.09 1018.13 434.88 583.25 1235 0.09 1018.81 436.64 582.17 1240 0.09 1019.46 438.40 581.06 1245 0.09 1020.08 440.16 579.93 1250 0.09 1020.68 441.92 578.76 1255 0.09 1021.25 443.68 577.57 1260 0.09 1021.79 445.44 576.35 1265 0.09 1022.30 447.20 575.10 1270 0.09 1022.78 448.96 573.82 1275 0.09 1023.24 450.72 572.52 1280 0.09 1023.67 452.48 571.18 1285 0.09 1024.07 454.24 569.82 1290 0.09 1024.44 456.00 568.44 1295 0.09 1024.78 457.76 567.02 1300 0.09 1025.10 459.53 565.57 1305 0.09 1025.39 461.29 564.10 1310 0.09 1025.65 463.05 562.60 1315 0.09 1025.88 464.81 561.07 1320 0.09 1026.08 466.57 559.52 1325 0.09 1026.26 468.33 557.93 1330 0.09 1026.41 470.09 556.32 1335 0.09 1026.53 471.85 554.68 1340 0.09 1026.62 473.61 553.01 1345 0.09 1026.68 475.37 551.31 1350 0.09 1026.72 477.13 549.59 1355 0.09 1026.73 478.89 547.83 1360 0.09 1026.71 480.65 546.05 1365 0.09 1026.66 482.41 544.25 1370 0.09 1026.58 484.17 542.41 1375 0.09 1026.48 485.94 540.54 1380 0.08 1026.35 487.70 538.65 1385 0.08 1026.19 489.46 536.73 1390 0.08 1026.00 491.22 534.78 1395 0.08 1025.78 492.98 532.80 1400 0.08 1025.54 494.74 530.80 1405 0.08 1025.27 496.50 528.77 1410 0.08 1024.97 498.26 526.71 1415 0.08 1024.64 500.02 524.62 1420 0.08 1024.28 501.78 522.50 1425 0.08 1023.90 503.54 520.36 1430 0.08 1023.49 505.30 518.18 1435 0.08 1023.05 507.06 515.98 1440 0.08 1022.58 508.82 513.75 Maximum Difference 603.56 25 Year Storage Calculations ‐ Basin 5 (Developed) Rainfall Duration  (minutes) Intensity (inches/Hour)      EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference  ft3 EQ 5‐4 C 0.370  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 12460.00 ft2 5 4.67 149.51 2.57 146.94 Tc 5 Minutes 10 3.41 218.34 3.86 214.49 Qa 0.009 ft3 15 2.78 267.01 5.14 261.86 P24(25)0.952 20 2.42 309.91 6.43 303.48 25 2.06 329.76 7.72 322.04 30 1.70 326.56 9.00 317.55 35 1.58 353.04 10.29 342.76 40 1.45 371.55 11.57 359.97 45 1.33 382.07 12.86 369.21 50 1.20 384.61 14.14 370.46 55 1.08 379.16 15.43 363.73 60 0.95 365.74 16.72 349.03 65 0.92 381.45 18.00 363.44 70 0.88 394.88 19.29 375.59 75 0.85 406.03 20.57 385.46 80 0.81 414.92 21.86 393.06 85 0.77 421.53 23.15 398.38 90 0.74 425.87 24.43 401.44 95 0.70 427.93 25.72 402.21 100 0.67 427.72 27.00 400.72 105 0.63 425.24 28.29 396.95 110 0.60 420.49 29.58 390.91 115 0.56 413.46 30.86 382.60 120 0.53 404.16 32.15 372.01 125 0.51 410.00 33.43 376.56 130 0.50 414.95 34.72 380.23 135 0.48 419.02 36.01 383.02 140 0.47 422.22 37.29 384.93 145 0.46 424.53 38.58 385.95 150 0.44 425.96 39.86 386.10 155 0.43 426.52 41.15 385.37 160 0.42 426.19 42.43 383.75 165 0.40 424.98 43.72 381.26 170 0.39 422.89 45.01 377.88 175 0.37 419.92 46.29 373.63 180 0.36 416.07 47.58 368.49 185 0.36 422.40 48.86 373.53 190 0.35 428.44 50.15 378.29 195 0.35 434.20 51.44 382.76 200 0.34 439.68 52.72 386.95 205 0.34 444.87 54.01 390.86 210 0.33 449.78 55.29 394.49 215 0.33 454.41 56.58 397.83 220 0.33 458.76 57.87 400.89 225 0.32 462.82 59.15 403.67 230 0.32 466.60 60.44 406.16 235 0.31 470.10 61.72 408.38 240 0.31 473.31 63.01 410.30 245 0.30 476.25 64.30 411.95 250 0.30 478.89 65.58 413.31 255 0.29 481.26 66.87 414.39 260 0.29 483.34 68.15 415.19 265 0.29 485.15 69.44 415.71 270 0.28 486.66 70.72 415.94 275 0.28 487.90 72.01 415.89 280 0.27 488.85 73.30 415.55 285 0.27 489.52 74.58 414.94 290 0.26 489.91 75.87 414.04 295 0.26 490.01 77.15 412.86 300 0.25 489.83 78.44 411.39 305 0.25 489.37 79.73 409.64 310 0.25 488.63 81.01 407.61 315 0.24 487.60 82.30 405.30 320 0.24 486.29 83.58 402.71 325 0.23 484.70 84.87 399.83 330 0.23 482.82 86.16 396.66 335 0.22 480.66 87.44 393.22 340 0.22 478.22 88.73 389.49 345 0.22 475.50 90.01 385.48 350 0.21 472.49 91.30 381.19 355 0.21 469.20 92.59 376.61 360 0.20 465.63 93.87 371.76 365 0.20 469.66 95.16 374.51 370 0.20 473.63 96.44 377.19 375 0.20 477.53 97.73 379.80 380 0.20 481.36 99.01 382.35 385 0.20 485.13 100.30 384.83 390 0.20 488.83 101.59 387.24 395 0.19 492.46 102.87 389.59 400 0.19 496.02 104.16 391.87 405 0.19 499.52 105.44 394.08 410 0.19 502.95 106.73 396.22 415 0.19 506.32 108.02 398.30 420 0.19 509.62 109.30 400.32 425 0.19 512.85 110.59 402.26 430 0.19 516.02 111.87 404.14 435 0.19 519.12 113.16 405.96 440 0.19 522.15 114.45 407.70 445 0.18 525.11 115.73 409.38 450 0.18 528.01 117.02 410.99 455 0.18 530.84 118.30 412.54 460 0.18 533.61 119.59 414.02 465 0.18 536.31 120.87 415.43 470 0.18 538.94 122.16 416.78 475 0.18 541.50 123.45 418.06 480 0.18 544.00 124.73 419.27 485 0.18 546.44 126.02 420.42 490 0.17 548.80 127.30 421.50 495 0.17 551.10 128.59 422.51 500 0.17 553.33 129.88 423.45 505 0.17 555.50 131.16 424.33 510 0.17 557.59 132.45 425.15 515 0.17 559.63 133.73 425.89 520 0.17 561.59 135.02 426.57 525 0.17 563.49 136.31 427.18 530 0.17 565.32 137.59 427.73 535 0.17 567.08 138.88 428.21 540 0.16 568.78 140.16 428.62 545 0.16 570.41 141.45 428.97 550 0.16 571.98 142.74 429.24 555 0.16 573.48 144.02 429.46 560 0.16 574.91 145.31 429.60 565 0.16 576.27 146.59 429.68 570 0.16 577.57 147.88 429.69 575 0.16 578.80 149.16 429.64 580 0.16 579.97 150.45 429.52 585 0.16 581.06 151.74 429.33 590 0.15 582.10 153.02 429.07 595 0.15 583.06 154.31 428.75 600 0.15 583.96 155.59 428.36 605 0.15 584.79 156.88 427.91 610 0.15 585.55 158.17 427.39 615 0.15 586.25 159.45 426.80 620 0.15 586.88 160.74 426.14 625 0.15 587.45 162.02 425.42 630 0.15 587.94 163.31 424.63 635 0.14 588.37 164.60 423.78 640 0.14 588.74 165.88 422.86 645 0.14 589.04 167.17 421.87 650 0.14 589.27 168.45 420.81 655 0.14 589.43 169.74 419.69 660 0.14 589.53 171.03 418.50 665 0.14 589.56 172.31 417.25 670 0.14 589.52 173.60 415.93 675 0.14 589.42 174.88 414.54 680 0.14 589.25 176.17 413.08 685 0.13 589.01 177.45 411.56 690 0.13 588.71 178.74 409.97 695 0.13 588.34 180.03 408.32 700 0.13 587.91 181.31 406.59 705 0.13 587.40 182.60 404.81 710 0.13 586.83 183.88 402.95 715 0.13 586.20 185.17 401.03 720 0.13 585.50 186.46 399.04 725 0.13 588.08 187.74 400.34 730 0.13 590.64 189.03 401.61 735 0.13 593.18 190.31 402.87 740 0.13 595.70 191.60 404.11 745 0.13 598.21 192.89 405.32 750 0.13 600.69 194.17 406.52 755 0.12 603.15 195.46 407.69 760 0.12 605.59 196.74 408.84 765 0.12 608.01 198.03 409.98 770 0.12 610.41 199.31 411.09 775 0.12 612.78 200.60 412.18 780 0.12 615.14 201.89 413.25 785 0.12 617.48 203.17 414.31 790 0.12 619.80 204.46 415.34 795 0.12 622.09 205.74 416.35 800 0.12 624.37 207.03 417.34 805 0.12 626.62 208.32 418.31 810 0.12 628.86 209.60 419.26 815 0.12 631.07 210.89 420.19 820 0.12 633.27 212.17 421.10 825 0.12 635.44 213.46 421.98 830 0.12 637.60 214.75 422.85 835 0.12 639.73 216.03 423.70 840 0.12 641.84 217.32 424.52 845 0.12 643.93 218.60 425.33 850 0.12 646.01 219.89 426.12 855 0.12 648.06 221.18 426.88 860 0.12 650.09 222.46 427.63 865 0.12 652.10 223.75 428.35 870 0.12 654.09 225.03 429.06 875 0.12 656.06 226.32 429.74 880 0.12 658.01 227.60 430.40 885 0.12 659.94 228.89 431.04 890 0.12 661.84 230.18 431.67 895 0.12 663.73 231.46 432.27 900 0.12 665.60 232.75 432.85 905 0.12 667.44 234.03 433.41 910 0.11 669.27 235.32 433.95 915 0.11 671.08 236.61 434.47 920 0.11 672.86 237.89 434.97 925 0.11 674.63 239.18 435.45 930 0.11 676.37 240.46 435.91 935 0.11 678.09 241.75 436.35 940 0.11 679.80 243.04 436.76 945 0.11 681.48 244.32 437.16 950 0.11 683.14 245.61 437.54 955 0.11 684.79 246.89 437.89 960 0.11 686.41 248.18 438.23 965 0.11 688.01 249.47 438.54 970 0.11 689.59 250.75 438.84 975 0.11 691.15 252.04 439.11 980 0.11 692.69 253.32 439.37 985 0.11 694.21 254.61 439.60 990 0.11 695.71 255.89 439.81 995 0.11 697.19 257.18 440.01 1000 0.11 698.64 258.47 440.18 1005 0.11 700.08 259.75 440.33 1010 0.11 701.50 261.04 440.46 1015 0.11 702.90 262.32 440.57 1020 0.11 704.27 263.61 440.66 1025 0.11 705.63 264.90 440.73 1030 0.11 706.96 266.18 440.78 1035 0.11 708.28 267.47 440.81 1040 0.11 709.57 268.75 440.82 1045 0.11 710.85 270.04 440.81 1050 0.11 712.10 271.33 440.77 1055 0.11 713.33 272.61 440.72 1060 0.11 714.55 273.90 440.65 1065 0.10 715.74 275.18 440.55 1070 0.10 716.91 276.47 440.44 1075 0.10 718.06 277.76 440.31 1080 0.10 719.19 279.04 440.15 1085 0.10 720.30 280.33 439.97 1090 0.10 721.39 281.61 439.78 1095 0.10 722.46 282.90 439.56 1100 0.10 723.51 284.18 439.33 1105 0.10 724.54 285.47 439.07 1110 0.10 725.55 286.76 438.79 1115 0.10 726.53 288.04 438.49 1120 0.10 727.50 289.33 438.17 1125 0.10 728.45 290.61 437.83 1130 0.10 729.37 291.90 437.47 1135 0.10 730.28 293.19 437.09 1140 0.10 731.17 294.47 436.69 1145 0.10 732.03 295.76 436.27 1150 0.10 732.87 297.04 435.83 1155 0.10 733.70 298.33 435.37 1160 0.10 734.50 299.62 434.89 1165 0.10 735.28 300.90 434.38 1170 0.10 736.05 302.19 433.86 1175 0.10 736.79 303.47 433.32 1180 0.10 737.51 304.76 432.75 1185 0.10 738.21 306.04 432.17 1190 0.10 738.89 307.33 431.56 1195 0.10 739.55 308.62 430.94 1200 0.10 740.19 309.90 430.29 1205 0.10 740.81 311.19 429.62 1210 0.10 741.41 312.47 428.94 1215 0.10 741.99 313.76 428.23 1220 0.10 742.55 315.05 427.50 1225 0.09 743.09 316.33 426.75 1230 0.09 743.60 317.62 425.99 1235 0.09 744.10 318.90 425.20 1240 0.09 744.58 320.19 424.39 1245 0.09 745.03 321.48 423.56 1250 0.09 745.47 322.76 422.71 1255 0.09 745.88 324.05 421.83 1260 0.09 746.28 325.33 420.94 1265 0.09 746.65 326.62 420.03 1270 0.09 747.00 327.91 419.10 1275 0.09 747.34 329.19 418.15 1280 0.09 747.65 330.48 417.17 1285 0.09 747.94 331.76 416.18 1290 0.09 748.21 333.05 415.16 1295 0.09 748.46 334.33 414.13 1300 0.09 748.70 335.62 413.07 1305 0.09 748.91 336.91 412.00 1310 0.09 749.10 338.19 410.90 1315 0.09 749.27 339.48 409.79 1320 0.09 749.41 340.76 408.65 1325 0.09 749.54 342.05 407.49 1330 0.09 749.65 343.34 406.31 1335 0.09 749.74 344.62 405.12 1340 0.09 749.81 345.91 403.90 1345 0.09 749.85 347.19 402.66 1350 0.09 749.88 348.48 401.40 1355 0.09 749.88 349.77 400.12 1360 0.09 749.87 351.05 398.82 1365 0.09 749.83 352.34 397.50 1370 0.09 749.78 353.62 396.16 1375 0.09 749.70 354.91 394.79 1380 0.08 749.61 356.20 393.41 1385 0.08 749.49 357.48 392.01 1390 0.08 749.35 358.77 390.58 1395 0.08 749.19 360.05 389.14 1400 0.08 749.02 361.34 387.68 1405 0.08 748.82 362.62 386.19 1410 0.08 748.60 363.91 384.69 1415 0.08 748.36 365.20 383.16 1420 0.08 748.10 366.48 381.62 1425 0.08 747.82 367.77 380.05 1430 0.08 747.52 369.05 378.46 1435 0.08 747.19 370.34 376.85 1440 0.08 746.85 371.63 375.23 Maximum Difference 440.82 25 Year Storage Calculations ‐ Basin 5 (Pre) Rainfall Duration  (minutes) Intensity (inches/Hour)       EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference ft3  EQ 5‐4 C 0.370  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 12460.00 ft2 5 4.67 149.51 2.57 146.94 Tc 5 Minutes 10 3.41 218.34 3.86 214.49 Qa 0.009 ft3 15 2.78 267.01 5.14 261.86 P24(25)0.952 20 2.42 309.91 6.43 303.48 25 2.06 329.76 7.72 322.04 30 1.70 326.56 9.00 317.55 35 1.58 353.04 10.29 342.76 40 1.45 371.55 11.57 359.97 45 1.33 382.07 12.86 369.21 50 1.20 384.61 14.14 370.46 55 1.08 379.16 15.43 363.73 60 0.95 365.74 16.72 349.03 65 0.92 381.45 18.00 363.44 Storage Volume 0.00 70 0.88 394.88 19.29 375.59 75 0.85 406.03 20.57 385.46 80 0.81 414.92 21.86 393.06 85 0.77 421.53 23.15 398.38 90 0.74 425.87 24.43 401.44 95 0.70 427.93 25.72 402.21 100 0.67 427.72 27.00 400.72 105 0.63 425.24 28.29 396.95 110 0.60 420.49 29.58 390.91 115 0.56 413.46 30.86 382.60 120 0.53 404.16 32.15 372.01 125 0.51 410.00 33.43 376.56 130 0.50 414.95 34.72 380.23 135 0.48 419.02 36.01 383.02 140 0.47 422.22 37.29 384.93 145 0.46 424.53 38.58 385.95 150 0.44 425.96 39.86 386.10 155 0.43 426.52 41.15 385.37 160 0.42 426.19 42.43 383.75 165 0.40 424.98 43.72 381.26 170 0.39 422.89 45.01 377.88 175 0.37 419.92 46.29 373.63 180 0.36 416.07 47.58 368.49 185 0.36 422.40 48.86 373.53 190 0.35 428.44 50.15 378.29 195 0.35 434.20 51.44 382.76 200 0.34 439.68 52.72 386.95 205 0.34 444.87 54.01 390.86 210 0.33 449.78 55.29 394.49 215 0.33 454.41 56.58 397.83 220 0.33 458.76 57.87 400.89 225 0.32 462.82 59.15 403.67 230 0.32 466.60 60.44 406.16 235 0.31 470.10 61.72 408.38 240 0.31 473.31 63.01 410.30 245 0.30 476.25 64.30 411.95 250 0.30 478.89 65.58 413.31 255 0.29 481.26 66.87 414.39 260 0.29 483.34 68.15 415.19 265 0.29 485.15 69.44 415.71 270 0.28 486.66 70.72 415.94 275 0.28 487.90 72.01 415.89 280 0.27 488.85 73.30 415.55 285 0.27 489.52 74.58 414.94 290 0.26 489.91 75.87 414.04 295 0.26 490.01 77.15 412.86 300 0.25 489.83 78.44 411.39 305 0.25 489.37 79.73 409.64 310 0.25 488.63 81.01 407.61 315 0.24 487.60 82.30 405.30 320 0.24 486.29 83.58 402.71 325 0.23 484.70 84.87 399.83 330 0.23 482.82 86.16 396.66 335 0.22 480.66 87.44 393.22 340 0.22 478.22 88.73 389.49 345 0.22 475.50 90.01 385.48 350 0.21 472.49 91.30 381.19 355 0.21 469.20 92.59 376.61 360 0.20 465.63 93.87 371.76 365 0.20 469.66 95.16 374.51 370 0.20 473.63 96.44 377.19 375 0.20 477.53 97.73 379.80 380 0.20 481.36 99.01 382.35 385 0.20 485.13 100.30 384.83 390 0.20 488.83 101.59 387.24 395 0.19 492.46 102.87 389.59 400 0.19 496.02 104.16 391.87 405 0.19 499.52 105.44 394.08 410 0.19 502.95 106.73 396.22 415 0.19 506.32 108.02 398.30 420 0.19 509.62 109.30 400.32 425 0.19 512.85 110.59 402.26 430 0.19 516.02 111.87 404.14 435 0.19 519.12 113.16 405.96 440 0.19 522.15 114.45 407.70 445 0.18 525.11 115.73 409.38 450 0.18 528.01 117.02 410.99 455 0.18 530.84 118.30 412.54 460 0.18 533.61 119.59 414.02 465 0.18 536.31 120.87 415.43 470 0.18 538.94 122.16 416.78 475 0.18 541.50 123.45 418.06 480 0.18 544.00 124.73 419.27 485 0.18 546.44 126.02 420.42 490 0.17 548.80 127.30 421.50 495 0.17 551.10 128.59 422.51 500 0.17 553.33 129.88 423.45 505 0.17 555.50 131.16 424.33 510 0.17 557.59 132.45 425.15 515 0.17 559.63 133.73 425.89 520 0.17 561.59 135.02 426.57 525 0.17 563.49 136.31 427.18 530 0.17 565.32 137.59 427.73 535 0.17 567.08 138.88 428.21 540 0.16 568.78 140.16 428.62 545 0.16 570.41 141.45 428.97 550 0.16 571.98 142.74 429.24 555 0.16 573.48 144.02 429.46 560 0.16 574.91 145.31 429.60 565 0.16 576.27 146.59 429.68 570 0.16 577.57 147.88 429.69 575 0.16 578.80 149.16 429.64 580 0.16 579.97 150.45 429.52 585 0.16 581.06 151.74 429.33 590 0.15 582.10 153.02 429.07 595 0.15 583.06 154.31 428.75 600 0.15 583.96 155.59 428.36 605 0.15 584.79 156.88 427.91 610 0.15 585.55 158.17 427.39 615 0.15 586.25 159.45 426.80 620 0.15 586.88 160.74 426.14 625 0.15 587.45 162.02 425.42 630 0.15 587.94 163.31 424.63 635 0.14 588.37 164.60 423.78 640 0.14 588.74 165.88 422.86 645 0.14 589.04 167.17 421.87 650 0.14 589.27 168.45 420.81 655 0.14 589.43 169.74 419.69 660 0.14 589.53 171.03 418.50 665 0.14 589.56 172.31 417.25 670 0.14 589.52 173.60 415.93 675 0.14 589.42 174.88 414.54 680 0.14 589.25 176.17 413.08 685 0.13 589.01 177.45 411.56 690 0.13 588.71 178.74 409.97 695 0.13 588.34 180.03 408.32 700 0.13 587.91 181.31 406.59 705 0.13 587.40 182.60 404.81 710 0.13 586.83 183.88 402.95 715 0.13 586.20 185.17 401.03 720 0.13 585.50 186.46 399.04 725 0.13 588.08 187.74 400.34 730 0.13 590.64 189.03 401.61 735 0.13 593.18 190.31 402.87 740 0.13 595.70 191.60 404.11 745 0.13 598.21 192.89 405.32 750 0.13 600.69 194.17 406.52 755 0.12 603.15 195.46 407.69 760 0.12 605.59 196.74 408.84 765 0.12 608.01 198.03 409.98 770 0.12 610.41 199.31 411.09 775 0.12 612.78 200.60 412.18 780 0.12 615.14 201.89 413.25 785 0.12 617.48 203.17 414.31 790 0.12 619.80 204.46 415.34 795 0.12 622.09 205.74 416.35 800 0.12 624.37 207.03 417.34 805 0.12 626.62 208.32 418.31 810 0.12 628.86 209.60 419.26 815 0.12 631.07 210.89 420.19 820 0.12 633.27 212.17 421.10 825 0.12 635.44 213.46 421.98 830 0.12 637.60 214.75 422.85 835 0.12 639.73 216.03 423.70 840 0.12 641.84 217.32 424.52 845 0.12 643.93 218.60 425.33 850 0.12 646.01 219.89 426.12 855 0.12 648.06 221.18 426.88 860 0.12 650.09 222.46 427.63 865 0.12 652.10 223.75 428.35 870 0.12 654.09 225.03 429.06 875 0.12 656.06 226.32 429.74 880 0.12 658.01 227.60 430.40 885 0.12 659.94 228.89 431.04 890 0.12 661.84 230.18 431.67 895 0.12 663.73 231.46 432.27 900 0.12 665.60 232.75 432.85 905 0.12 667.44 234.03 433.41 910 0.11 669.27 235.32 433.95 915 0.11 671.08 236.61 434.47 920 0.11 672.86 237.89 434.97 925 0.11 674.63 239.18 435.45 930 0.11 676.37 240.46 435.91 935 0.11 678.09 241.75 436.35 940 0.11 679.80 243.04 436.76 945 0.11 681.48 244.32 437.16 950 0.11 683.14 245.61 437.54 955 0.11 684.79 246.89 437.89 960 0.11 686.41 248.18 438.23 965 0.11 688.01 249.47 438.54 970 0.11 689.59 250.75 438.84 975 0.11 691.15 252.04 439.11 980 0.11 692.69 253.32 439.37 985 0.11 694.21 254.61 439.60 990 0.11 695.71 255.89 439.81 995 0.11 697.19 257.18 440.01 1000 0.11 698.64 258.47 440.18 1005 0.11 700.08 259.75 440.33 1010 0.11 701.50 261.04 440.46 1015 0.11 702.90 262.32 440.57 1020 0.11 704.27 263.61 440.66 1025 0.11 705.63 264.90 440.73 1030 0.11 706.96 266.18 440.78 1035 0.11 708.28 267.47 440.81 1040 0.11 709.57 268.75 440.82 1045 0.11 710.85 270.04 440.81 1050 0.11 712.10 271.33 440.77 1055 0.11 713.33 272.61 440.72 1060 0.11 714.55 273.90 440.65 1065 0.10 715.74 275.18 440.55 1070 0.10 716.91 276.47 440.44 1075 0.10 718.06 277.76 440.31 1080 0.10 719.19 279.04 440.15 1085 0.10 720.30 280.33 439.97 1090 0.10 721.39 281.61 439.78 1095 0.10 722.46 282.90 439.56 1100 0.10 723.51 284.18 439.33 1105 0.10 724.54 285.47 439.07 1110 0.10 725.55 286.76 438.79 1115 0.10 726.53 288.04 438.49 1120 0.10 727.50 289.33 438.17 1125 0.10 728.45 290.61 437.83 1130 0.10 729.37 291.90 437.47 1135 0.10 730.28 293.19 437.09 1140 0.10 731.17 294.47 436.69 1145 0.10 732.03 295.76 436.27 1150 0.10 732.87 297.04 435.83 1155 0.10 733.70 298.33 435.37 1160 0.10 734.50 299.62 434.89 1165 0.10 735.28 300.90 434.38 1170 0.10 736.05 302.19 433.86 1175 0.10 736.79 303.47 433.32 1180 0.10 737.51 304.76 432.75 1185 0.10 738.21 306.04 432.17 1190 0.10 738.89 307.33 431.56 1195 0.10 739.55 308.62 430.94 1200 0.10 740.19 309.90 430.29 1205 0.10 740.81 311.19 429.62 1210 0.10 741.41 312.47 428.94 1215 0.10 741.99 313.76 428.23 1220 0.10 742.55 315.05 427.50 1225 0.09 743.09 316.33 426.75 1230 0.09 743.60 317.62 425.99 1235 0.09 744.10 318.90 425.20 1240 0.09 744.58 320.19 424.39 1245 0.09 745.03 321.48 423.56 1250 0.09 745.47 322.76 422.71 1255 0.09 745.88 324.05 421.83 1260 0.09 746.28 325.33 420.94 1265 0.09 746.65 326.62 420.03 1270 0.09 747.00 327.91 419.10 1275 0.09 747.34 329.19 418.15 1280 0.09 747.65 330.48 417.17 1285 0.09 747.94 331.76 416.18 1290 0.09 748.21 333.05 415.16 1295 0.09 748.46 334.33 414.13 1300 0.09 748.70 335.62 413.07 1305 0.09 748.91 336.91 412.00 1310 0.09 749.10 338.19 410.90 1315 0.09 749.27 339.48 409.79 1320 0.09 749.41 340.76 408.65 1325 0.09 749.54 342.05 407.49 1330 0.09 749.65 343.34 406.31 1335 0.09 749.74 344.62 405.12 1340 0.09 749.81 345.91 403.90 1345 0.09 749.85 347.19 402.66 1350 0.09 749.88 348.48 401.40 1355 0.09 749.88 349.77 400.12 1360 0.09 749.87 351.05 398.82 1365 0.09 749.83 352.34 397.50 1370 0.09 749.78 353.62 396.16 1375 0.09 749.70 354.91 394.79 1380 0.08 749.61 356.20 393.41 1385 0.08 749.49 357.48 392.01 1390 0.08 749.35 358.77 390.58 1395 0.08 749.19 360.05 389.14 1400 0.08 749.02 361.34 387.68 1405 0.08 748.82 362.62 386.19 1410 0.08 748.60 363.91 384.69 1415 0.08 748.36 365.20 383.16 1420 0.08 748.10 366.48 381.62 1425 0.08 747.82 367.77 380.05 1430 0.08 747.52 369.05 378.46 1435 0.08 747.19 370.34 376.85 1440 0.08 746.85 371.63 375.23 Maximum Difference 440.82 25 Year Storage Calculations ‐ Basin 6 (Developed) Rainfall Duration  (minutes) Intensity (inches/Hour)      EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference  ft3 EQ 5‐4 C 0.528  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 14758.00 ft2 5 4.67 252.59 4.34 248.24 Tc 5 Minutes 10 3.41 368.87 6.52 362.36 Qa 0.014 ft3 15 2.78 451.09 8.69 442.40 P24(25)0.952 20 2.42 523.56 10.86 512.70 25 2.06 557.10 13.03 544.06 30 1.70 551.69 15.21 536.48 35 1.58 596.43 17.38 579.06 40 1.45 627.70 19.55 608.14 45 1.33 645.47 21.72 623.75 50 1.20 649.76 23.90 625.86 55 1.08 640.56 26.07 614.49 60 0.95 617.89 28.24 589.65 65 0.92 644.42 30.41 614.01 70 0.88 667.11 32.59 634.52 75 0.85 685.96 34.76 651.20 80 0.81 700.97 36.93 664.04 85 0.77 712.14 39.10 673.03 90 0.74 719.47 41.28 678.19 95 0.70 722.95 43.45 679.51 100 0.67 722.60 45.62 676.98 105 0.63 718.41 47.79 670.62 110 0.60 710.38 49.97 660.41 115 0.56 698.51 52.14 646.37 120 0.53 682.79 54.31 628.48 125 0.51 692.65 56.48 636.17 130 0.50 701.02 58.66 642.37 135 0.48 707.90 60.83 647.08 140 0.47 713.30 63.00 650.30 145 0.46 717.21 65.17 652.04 150 0.44 719.63 67.35 652.28 155 0.43 720.56 69.52 651.04 160 0.42 720.01 71.69 648.32 165 0.40 717.96 73.86 644.10 170 0.39 714.44 76.03 638.40 175 0.37 709.42 78.21 631.21 180 0.36 702.92 80.38 622.54 185 0.36 713.60 82.55 631.05 190 0.35 723.81 84.72 639.09 195 0.35 733.54 86.90 646.64 200 0.34 742.80 89.07 653.73 205 0.34 751.57 91.24 660.33 210 0.33 759.87 93.41 666.45 215 0.33 767.69 95.59 672.10 220 0.33 775.03 97.76 677.27 225 0.32 781.90 99.93 681.96 230 0.32 788.28 102.10 686.18 235 0.31 794.19 104.28 689.91 240 0.31 799.62 106.45 693.17 245 0.30 804.58 108.62 695.95 250 0.30 809.05 110.79 698.26 255 0.29 813.05 112.97 700.08 260 0.29 816.57 115.14 701.43 265 0.29 819.61 117.31 702.30 270 0.28 822.18 119.48 702.69 275 0.28 824.26 121.66 702.61 280 0.27 825.87 123.83 702.04 285 0.27 827.00 126.00 701.00 290 0.26 827.66 128.17 699.48 295 0.26 827.83 130.35 697.49 300 0.25 827.53 132.52 695.01 305 0.25 826.75 134.69 692.06 310 0.25 825.49 136.86 688.63 315 0.24 823.76 139.03 684.72 320 0.24 821.54 141.21 680.34 325 0.23 818.85 143.38 675.47 330 0.23 815.68 145.55 670.13 335 0.22 812.04 147.72 664.31 340 0.22 807.91 149.90 658.02 345 0.22 803.31 152.07 651.24 350 0.21 798.23 154.24 643.99 355 0.21 792.67 156.41 636.26 360 0.20 786.64 158.59 628.06 365 0.20 793.45 160.76 632.70 370 0.20 800.15 162.93 637.22 375 0.20 806.74 165.10 641.64 380 0.20 813.22 167.28 645.94 385 0.20 819.58 169.45 650.13 390 0.20 825.83 171.62 654.21 395 0.19 831.96 173.79 658.17 400 0.19 837.99 175.97 662.02 405 0.19 843.90 178.14 665.76 410 0.19 849.70 180.31 669.39 415 0.19 855.38 182.48 672.90 420 0.19 860.96 184.66 676.30 425 0.19 866.42 186.83 679.59 430 0.19 871.77 189.00 682.77 435 0.19 877.00 191.17 685.83 440 0.19 882.12 193.35 688.78 445 0.18 887.13 195.52 691.62 450 0.18 892.03 197.69 694.34 455 0.18 896.81 199.86 696.95 460 0.18 901.49 202.04 699.45 465 0.18 906.05 204.21 701.84 470 0.18 910.49 206.38 704.11 475 0.18 914.83 208.55 706.27 480 0.18 919.05 210.72 708.32 485 0.18 923.15 212.90 710.26 490 0.17 927.15 215.07 712.08 495 0.17 931.03 217.24 713.79 500 0.17 934.80 219.41 715.39 505 0.17 938.46 221.59 716.87 510 0.17 942.01 223.76 718.25 515 0.17 945.44 225.93 719.51 520 0.17 948.76 228.10 720.65 525 0.17 951.97 230.28 721.69 530 0.17 955.06 232.45 722.61 535 0.17 958.04 234.62 723.42 540 0.16 960.91 236.79 724.12 545 0.16 963.67 238.97 724.70 550 0.16 966.31 241.14 725.17 555 0.16 968.84 243.31 725.53 560 0.16 971.26 245.48 725.77 565 0.16 973.56 247.66 725.91 570 0.16 975.76 249.83 725.93 575 0.16 977.84 252.00 725.84 580 0.16 979.80 254.17 725.63 585 0.16 981.66 256.35 725.31 590 0.15 983.40 258.52 724.88 595 0.15 985.03 260.69 724.34 600 0.15 986.55 262.86 723.68 605 0.15 987.95 265.04 722.92 610 0.15 989.24 267.21 722.03 615 0.15 990.42 269.38 721.04 620 0.15 991.49 271.55 719.93 625 0.15 992.44 273.73 718.71 630 0.15 993.28 275.90 717.38 635 0.14 994.01 278.07 715.94 640 0.14 994.62 280.24 714.38 645 0.14 995.13 282.41 712.71 650 0.14 995.52 284.59 710.93 655 0.14 995.79 286.76 709.03 660 0.14 995.96 288.93 707.03 665 0.14 996.01 291.10 704.90 670 0.14 995.95 293.28 702.67 675 0.14 995.77 295.45 700.33 680 0.14 995.49 297.62 697.87 685 0.13 995.09 299.79 695.30 690 0.13 994.58 301.97 692.61 695 0.13 993.95 304.14 689.81 700 0.13 993.22 306.31 686.91 705 0.13 992.37 308.48 683.88 710 0.13 991.40 310.66 680.75 715 0.13 990.33 312.83 677.50 720 0.13 989.14 315.00 674.14 725 0.13 993.51 317.17 676.33 730 0.13 997.84 319.35 678.49 735 0.13 1002.13 321.52 680.61 740 0.13 1006.39 323.69 682.70 745 0.13 1010.62 325.86 684.75 750 0.13 1014.81 328.04 686.77 755 0.12 1018.96 330.21 688.76 760 0.12 1023.09 332.38 690.71 765 0.12 1027.17 334.55 692.62 770 0.12 1031.23 336.73 694.50 775 0.12 1035.24 338.90 696.35 780 0.12 1039.23 341.07 698.16 785 0.12 1043.18 343.24 699.93 790 0.12 1047.09 345.42 701.68 795 0.12 1050.97 347.59 703.38 800 0.12 1054.82 349.76 705.06 805 0.12 1058.63 351.93 706.70 810 0.12 1062.40 354.10 708.30 815 0.12 1066.15 356.28 709.87 820 0.12 1069.85 358.45 711.40 825 0.12 1073.53 360.62 712.90 830 0.12 1077.16 362.79 714.37 835 0.12 1080.77 364.97 715.80 840 0.12 1084.34 367.14 717.20 845 0.12 1087.87 369.31 718.56 850 0.12 1091.37 371.48 719.89 855 0.12 1094.84 373.66 721.18 860 0.12 1098.27 375.83 722.44 865 0.12 1101.66 378.00 723.66 870 0.12 1105.03 380.17 724.85 875 0.12 1108.35 382.35 726.01 880 0.12 1111.65 384.52 727.13 885 0.12 1114.90 386.69 728.21 890 0.12 1118.13 388.86 729.26 895 0.12 1121.32 391.04 730.28 900 0.12 1124.47 393.21 731.26 905 0.12 1127.59 395.38 732.21 910 0.11 1130.67 397.55 733.12 915 0.11 1133.73 399.73 734.00 920 0.11 1136.74 401.90 734.84 925 0.11 1139.72 404.07 735.65 930 0.11 1142.67 406.24 736.43 935 0.11 1145.58 408.42 737.17 940 0.11 1148.46 410.59 737.87 945 0.11 1151.30 412.76 738.54 950 0.11 1154.11 414.93 739.18 955 0.11 1156.89 417.10 739.78 960 0.11 1159.63 419.28 740.35 965 0.11 1162.33 421.45 740.88 970 0.11 1165.00 423.62 741.38 975 0.11 1167.64 425.79 741.84 980 0.11 1170.24 427.97 742.27 985 0.11 1172.81 430.14 742.67 990 0.11 1175.34 432.31 743.03 995 0.11 1177.84 434.48 743.35 1000 0.11 1180.30 436.66 743.64 1005 0.11 1182.73 438.83 743.90 1010 0.11 1185.12 441.00 744.12 1015 0.11 1187.48 443.17 744.31 1020 0.11 1189.81 445.35 744.46 1025 0.11 1192.10 447.52 744.58 1030 0.11 1194.35 449.69 744.66 1035 0.11 1196.57 451.86 744.71 1040 0.11 1198.76 454.04 744.73 1045 0.11 1200.91 456.21 744.71 1050 0.11 1203.03 458.38 744.65 1055 0.11 1205.11 460.55 744.56 1060 0.11 1207.16 462.73 744.44 1065 0.10 1209.18 464.90 744.28 1070 0.10 1211.16 467.07 744.09 1075 0.10 1213.10 469.24 743.86 1080 0.10 1215.01 471.42 743.60 1085 0.10 1216.89 473.59 743.30 1090 0.10 1218.73 475.76 742.97 1095 0.10 1220.54 477.93 742.60 1100 0.10 1222.31 480.11 742.20 1105 0.10 1224.05 482.28 741.77 1110 0.10 1225.75 484.45 741.30 1115 0.10 1227.42 486.62 740.79 1120 0.10 1229.05 488.79 740.26 1125 0.10 1230.65 490.97 739.68 1130 0.10 1232.21 493.14 739.07 1135 0.10 1233.74 495.31 738.43 1140 0.10 1235.24 497.48 737.76 1145 0.10 1236.70 499.66 737.04 1150 0.10 1238.13 501.83 736.30 1155 0.10 1239.52 504.00 735.52 1160 0.10 1240.88 506.17 734.70 1165 0.10 1242.20 508.35 733.85 1170 0.10 1243.49 510.52 732.97 1175 0.10 1244.74 512.69 732.05 1180 0.10 1245.96 514.86 731.10 1185 0.10 1247.15 517.04 730.11 1190 0.10 1248.30 519.21 729.09 1195 0.10 1249.41 521.38 728.03 1200 0.10 1250.49 523.55 726.94 1205 0.10 1251.54 525.73 725.81 1210 0.10 1252.55 527.90 724.65 1215 0.10 1253.53 530.07 723.46 1220 0.10 1254.47 532.24 722.23 1225 0.09 1255.38 534.42 720.96 1230 0.09 1256.25 536.59 719.67 1235 0.09 1257.09 538.76 718.33 1240 0.09 1257.90 540.93 716.96 1245 0.09 1258.67 543.11 715.56 1250 0.09 1259.40 545.28 714.12 1255 0.09 1260.10 547.45 712.65 1260 0.09 1260.77 549.62 711.15 1265 0.09 1261.40 551.80 709.61 1270 0.09 1262.00 553.97 708.03 1275 0.09 1262.56 556.14 706.42 1280 0.09 1263.09 558.31 704.78 1285 0.09 1263.58 560.48 703.10 1290 0.09 1264.04 562.66 701.38 1295 0.09 1264.47 564.83 699.64 1300 0.09 1264.86 567.00 697.85 1305 0.09 1265.21 569.17 696.04 1310 0.09 1265.53 571.35 694.19 1315 0.09 1265.82 573.52 692.30 1320 0.09 1266.07 575.69 690.38 1325 0.09 1266.29 577.86 688.42 1330 0.09 1266.47 580.04 686.43 1335 0.09 1266.62 582.21 684.41 1340 0.09 1266.73 584.38 682.35 1345 0.09 1266.81 586.55 680.26 1350 0.09 1266.85 588.73 678.13 1355 0.09 1266.86 590.90 675.97 1360 0.09 1266.84 593.07 673.77 1365 0.09 1266.78 595.24 671.54 1370 0.09 1266.69 597.42 669.27 1375 0.09 1266.56 599.59 666.97 1380 0.08 1266.39 601.76 664.63 1385 0.08 1266.20 603.93 662.26 1390 0.08 1265.97 606.11 659.86 1395 0.08 1265.70 608.28 657.42 1400 0.08 1265.40 610.45 654.95 1405 0.08 1265.06 612.62 652.44 1410 0.08 1264.69 614.80 649.90 1415 0.08 1264.29 616.97 647.32 1420 0.08 1263.85 619.14 644.71 1425 0.08 1263.37 621.31 642.06 1430 0.08 1262.86 623.49 639.38 1435 0.08 1262.32 625.66 636.66 1440 0.08 1261.74 627.83 633.91 Maximum Difference 744.73 25 Year Storage Calculations ‐ Basin 6 (Pre) Rainfall Duration  (minutes) Intensity (inches/Hour)       EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference ft3  EQ 5‐4 C 0.370  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 14758.00 ft2 5 4.67 177.09 3.05 174.04 Tc 5 Minutes 10 3.41 258.61 4.57 254.04 Qa 0.010 ft3 15 2.78 316.25 6.09 310.16 P24(25)0.952 20 2.42 367.06 7.62 359.45 25 2.06 390.57 9.14 381.44 30 1.70 386.78 10.66 376.12 35 1.58 418.15 12.18 405.97 40 1.45 440.07 13.71 426.36 45 1.33 452.53 15.23 437.30 50 1.20 455.54 16.75 438.79 55 1.08 449.09 18.28 430.81 60 0.95 433.20 19.80 413.40 65 0.92 451.80 21.32 430.47 Storage Volume 222.61 70 0.88 467.70 22.85 444.86 75 0.85 480.92 24.37 456.55 80 0.81 491.44 25.89 465.55 85 0.77 499.27 27.42 471.86 90 0.74 504.41 28.94 475.47 95 0.70 506.86 30.46 476.39 100 0.67 506.61 31.98 474.63 105 0.63 503.67 33.51 470.16 110 0.60 498.04 35.03 463.01 115 0.56 489.72 36.55 453.16 120 0.53 478.70 38.08 440.62 125 0.51 485.61 39.60 446.01 130 0.50 491.48 41.12 450.36 135 0.48 496.30 42.65 453.66 140 0.47 500.09 44.17 455.92 145 0.46 502.83 45.69 457.13 150 0.44 504.52 47.21 457.31 155 0.43 505.18 48.74 456.44 160 0.42 504.79 50.26 454.53 165 0.40 503.36 51.78 451.57 170 0.39 500.88 53.31 447.58 175 0.37 497.37 54.83 442.54 180 0.36 492.81 56.35 436.45 185 0.36 500.30 57.88 442.42 190 0.35 507.46 59.40 448.06 195 0.35 514.28 60.92 453.36 200 0.34 520.77 62.45 458.32 205 0.34 526.92 63.97 462.95 210 0.33 532.74 65.49 467.24 215 0.33 538.22 67.01 471.20 220 0.33 543.37 68.54 474.83 225 0.32 548.18 70.06 478.12 230 0.32 552.66 71.58 481.07 235 0.31 556.80 73.11 483.69 240 0.31 560.61 74.63 485.98 245 0.30 564.08 76.15 487.93 250 0.30 567.22 77.68 489.54 255 0.29 570.02 79.20 490.82 260 0.29 572.49 80.72 491.77 265 0.29 574.62 82.25 492.38 270 0.28 576.42 83.77 492.65 275 0.28 577.88 85.29 492.59 280 0.27 579.01 86.81 492.20 285 0.27 579.80 88.34 491.47 290 0.26 580.26 89.86 490.40 295 0.26 580.38 91.38 489.00 300 0.25 580.17 92.91 487.27 305 0.25 579.63 94.43 485.20 310 0.25 578.74 95.95 482.79 315 0.24 577.53 97.48 480.05 320 0.24 575.98 99.00 476.98 325 0.23 574.09 100.52 473.57 330 0.23 571.87 102.05 469.82 335 0.22 569.31 103.57 465.74 340 0.22 566.42 105.09 461.33 345 0.22 563.19 106.61 456.58 350 0.21 559.63 108.14 451.49 355 0.21 555.73 109.66 446.07 360 0.20 551.51 111.18 440.32 365 0.20 556.28 112.71 443.58 370 0.20 560.98 114.23 446.75 375 0.20 565.60 115.75 449.85 380 0.20 570.14 117.28 452.86 385 0.20 574.60 118.80 455.80 390 0.20 578.98 120.32 458.66 395 0.19 583.28 121.84 461.44 400 0.19 587.50 123.37 464.14 405 0.19 591.65 124.89 466.76 410 0.19 595.71 126.41 469.30 415 0.19 599.70 127.94 471.76 420 0.19 603.61 129.46 474.15 425 0.19 607.44 130.98 476.45 430 0.19 611.19 132.51 478.68 435 0.19 614.86 134.03 480.83 440 0.19 618.45 135.55 482.89 445 0.18 621.96 137.08 484.88 450 0.18 625.39 138.60 486.79 455 0.18 628.75 140.12 488.63 460 0.18 632.02 141.64 490.38 465 0.18 635.22 143.17 492.05 470 0.18 638.34 144.69 493.65 475 0.18 641.37 146.21 495.16 480 0.18 644.33 147.74 496.60 485 0.18 647.21 149.26 497.95 490 0.17 650.02 150.78 499.23 495 0.17 652.74 152.31 500.43 500 0.17 655.38 153.83 501.55 505 0.17 657.95 155.35 502.59 510 0.17 660.43 156.88 503.56 515 0.17 662.84 158.40 504.44 520 0.17 665.16 159.92 505.24 525 0.17 667.41 161.44 505.97 530 0.17 669.58 162.97 506.61 535 0.17 671.67 164.49 507.18 540 0.16 673.68 166.01 507.67 545 0.16 675.62 167.54 508.08 550 0.16 677.47 169.06 508.41 555 0.16 679.24 170.58 508.66 560 0.16 680.94 172.11 508.83 565 0.16 682.56 173.63 508.93 570 0.16 684.09 175.15 508.94 575 0.16 685.55 176.68 508.88 580 0.16 686.93 178.20 508.73 585 0.16 688.23 179.72 508.51 590 0.15 689.45 181.24 508.21 595 0.15 690.59 182.77 507.83 600 0.15 691.66 184.29 507.37 605 0.15 692.64 185.81 506.83 610 0.15 693.55 187.34 506.21 615 0.15 694.37 188.86 505.51 620 0.15 695.12 190.38 504.74 625 0.15 695.79 191.91 503.88 630 0.15 696.38 193.43 502.95 635 0.14 696.89 194.95 501.94 640 0.14 697.32 196.48 500.85 645 0.14 697.67 198.00 499.67 650 0.14 697.95 199.52 498.42 655 0.14 698.14 201.04 497.10 660 0.14 698.26 202.57 495.69 665 0.14 698.29 204.09 494.20 670 0.14 698.25 205.61 492.64 675 0.14 698.13 207.14 490.99 680 0.14 697.93 208.66 489.27 685 0.13 697.65 210.18 487.46 690 0.13 697.29 211.71 485.58 695 0.13 696.85 213.23 483.62 700 0.13 696.33 214.75 481.58 705 0.13 695.74 216.27 479.46 710 0.13 695.06 217.80 477.27 715 0.13 694.31 219.32 474.99 720 0.13 693.48 220.84 472.63 725 0.13 696.54 222.37 474.17 730 0.13 699.57 223.89 475.68 735 0.13 702.58 225.41 477.17 740 0.13 705.57 226.94 478.63 745 0.13 708.53 228.46 480.07 750 0.13 711.47 229.98 481.49 755 0.12 714.39 231.51 482.88 760 0.12 717.28 233.03 484.25 765 0.12 720.14 234.55 485.59 770 0.12 722.98 236.07 486.91 775 0.12 725.80 237.60 488.20 780 0.12 728.59 239.12 489.47 785 0.12 731.36 240.64 490.72 790 0.12 734.11 242.17 491.94 795 0.12 736.83 243.69 493.14 800 0.12 739.52 245.21 494.31 805 0.12 742.19 246.74 495.46 810 0.12 744.84 248.26 496.58 815 0.12 747.46 249.78 497.68 820 0.12 750.06 251.31 498.76 825 0.12 752.64 252.83 499.81 830 0.12 755.19 254.35 500.84 835 0.12 757.72 255.87 501.84 840 0.12 760.22 257.40 502.82 845 0.12 762.70 258.92 503.77 850 0.12 765.15 260.44 504.71 855 0.12 767.58 261.97 505.61 860 0.12 769.98 263.49 506.49 865 0.12 772.36 265.01 507.35 870 0.12 774.72 266.54 508.19 875 0.12 777.05 268.06 509.00 880 0.12 779.36 269.58 509.78 885 0.12 781.65 271.11 510.54 890 0.12 783.91 272.63 511.28 895 0.12 786.14 274.15 511.99 900 0.12 788.35 275.67 512.68 905 0.12 790.54 277.20 513.34 910 0.11 792.70 278.72 513.98 915 0.11 794.84 280.24 514.60 920 0.11 796.96 281.77 515.19 925 0.11 799.05 283.29 515.76 930 0.11 801.11 284.81 516.30 935 0.11 803.16 286.34 516.82 940 0.11 805.17 287.86 517.31 945 0.11 807.17 289.38 517.79 950 0.11 809.14 290.90 518.23 955 0.11 811.08 292.43 518.65 960 0.11 813.00 293.95 519.05 965 0.11 814.90 295.47 519.42 970 0.11 816.77 297.00 519.77 975 0.11 818.62 298.52 520.10 980 0.11 820.44 300.04 520.40 985 0.11 822.24 301.57 520.68 990 0.11 824.02 303.09 520.93 995 0.11 825.77 304.61 521.16 1000 0.11 827.50 306.14 521.36 1005 0.11 829.20 307.66 521.54 1010 0.11 830.88 309.18 521.70 1015 0.11 832.53 310.70 521.83 1020 0.11 834.16 312.23 521.93 1025 0.11 835.77 313.75 522.02 1030 0.11 837.35 315.27 522.07 1035 0.11 838.91 316.80 522.11 1040 0.11 840.44 318.32 522.12 1045 0.11 841.95 319.84 522.11 1050 0.11 843.43 321.37 522.07 1055 0.11 844.89 322.89 522.00 1060 0.11 846.33 324.41 521.92 1065 0.10 847.74 325.94 521.81 1070 0.10 849.13 327.46 521.67 1075 0.10 850.49 328.98 521.51 1080 0.10 851.83 330.50 521.33 1085 0.10 853.15 332.03 521.12 1090 0.10 854.44 333.55 520.89 1095 0.10 855.70 335.07 520.63 1100 0.10 856.95 336.60 520.35 1105 0.10 858.17 338.12 520.05 1110 0.10 859.36 339.64 519.72 1115 0.10 860.53 341.17 519.36 1120 0.10 861.67 342.69 518.99 1125 0.10 862.80 344.21 518.58 1130 0.10 863.89 345.74 518.16 1135 0.10 864.97 347.26 517.71 1140 0.10 866.01 348.78 517.23 1145 0.10 867.04 350.30 516.73 1150 0.10 868.04 351.83 516.21 1155 0.10 869.01 353.35 515.66 1160 0.10 869.97 354.87 515.09 1165 0.10 870.89 356.40 514.50 1170 0.10 871.80 357.92 513.88 1175 0.10 872.68 359.44 513.23 1180 0.10 873.53 360.97 512.56 1185 0.10 874.36 362.49 511.87 1190 0.10 875.17 364.01 511.16 1195 0.10 875.95 365.53 510.41 1200 0.10 876.71 367.06 509.65 1205 0.10 877.44 368.58 508.86 1210 0.10 878.15 370.10 508.05 1215 0.10 878.84 371.63 507.21 1220 0.10 879.50 373.15 506.35 1225 0.09 880.13 374.67 505.46 1230 0.09 880.75 376.20 504.55 1235 0.09 881.33 377.72 503.61 1240 0.09 881.90 379.24 502.66 1245 0.09 882.44 380.77 501.67 1250 0.09 882.95 382.29 500.67 1255 0.09 883.45 383.81 499.63 1260 0.09 883.91 385.33 498.58 1265 0.09 884.36 386.86 497.50 1270 0.09 884.77 388.38 496.39 1275 0.09 885.17 389.90 495.26 1280 0.09 885.54 391.43 494.11 1285 0.09 885.88 392.95 492.93 1290 0.09 886.21 394.47 491.73 1295 0.09 886.50 396.00 490.51 1300 0.09 886.78 397.52 489.26 1305 0.09 887.03 399.04 487.98 1310 0.09 887.25 400.57 486.69 1315 0.09 887.45 402.09 485.36 1320 0.09 887.63 403.61 484.02 1325 0.09 887.78 405.13 482.65 1330 0.09 887.91 406.66 481.25 1335 0.09 888.01 408.18 479.83 1340 0.09 888.09 409.70 478.39 1345 0.09 888.15 411.23 476.92 1350 0.09 888.18 412.75 475.43 1355 0.09 888.19 414.27 473.91 1360 0.09 888.17 415.80 472.37 1365 0.09 888.13 417.32 470.81 1370 0.09 888.06 418.84 469.22 1375 0.09 887.97 420.37 467.61 1380 0.08 887.86 421.89 465.97 1385 0.08 887.72 423.41 464.31 1390 0.08 887.56 424.93 462.62 1395 0.08 887.37 426.46 460.91 1400 0.08 887.16 427.98 459.18 1405 0.08 886.92 429.50 457.42 1410 0.08 886.66 431.03 455.64 1415 0.08 886.38 432.55 453.83 1420 0.08 886.07 434.07 452.00 1425 0.08 885.74 435.60 450.14 1430 0.08 885.38 437.12 448.26 1435 0.08 885.00 438.64 446.36 1440 0.08 884.59 440.16 444.43 Maximum Difference 522.12 25 Year Storage Calculations ‐ Basin 7 (Developed) Rainfall Duration  (minutes) Intensity (inches/Hour)      EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference  ft3 EQ 5‐4 C 0.483  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 27993.00 ft2 5 4.67 438.85 7.55 431.30 Tc 5 Minutes 10 3.41 640.88 11.32 629.56 Qa 0.025 ft3 15 2.78 783.72 15.10 768.62 P24(25)0.952 20 2.42 909.64 18.87 890.77 25 2.06 967.90 22.65 945.26 30 1.70 958.51 26.42 932.09 35 1.58 1036.25 30.20 1006.06 40 1.45 1090.56 33.97 1056.59 45 1.33 1121.44 37.74 1083.70 50 1.20 1128.90 41.52 1087.38 55 1.08 1112.92 45.29 1067.62 60 0.95 1073.53 49.07 1024.46 65 0.92 1119.62 52.84 1066.78 70 0.88 1159.04 56.62 1102.43 75 0.85 1191.79 60.39 1131.40 80 0.81 1217.87 64.16 1153.70 85 0.77 1237.27 67.94 1169.33 90 0.74 1250.01 71.71 1178.29 95 0.70 1256.07 75.49 1180.58 100 0.67 1255.46 79.26 1176.19 105 0.63 1248.17 83.04 1165.14 110 0.60 1234.22 86.81 1147.41 115 0.56 1213.59 90.59 1123.01 120 0.53 1186.29 94.36 1091.93 125 0.51 1203.42 98.13 1105.29 130 0.50 1217.96 101.91 1116.05 135 0.48 1229.92 105.68 1124.24 140 0.47 1239.29 109.46 1129.84 145 0.46 1246.08 113.23 1132.85 150 0.44 1250.29 117.01 1133.28 155 0.43 1251.91 120.78 1131.13 160 0.42 1250.95 124.55 1126.39 165 0.40 1247.40 128.33 1119.07 170 0.39 1241.27 132.10 1109.16 175 0.37 1232.55 135.88 1096.67 180 0.36 1221.25 139.65 1081.60 185 0.36 1239.82 143.43 1096.39 190 0.35 1257.55 147.20 1110.35 195 0.35 1274.46 150.98 1123.49 200 0.34 1290.54 154.75 1135.79 205 0.34 1305.79 158.52 1147.26 210 0.33 1320.20 162.30 1157.90 215 0.33 1333.79 166.07 1167.72 220 0.33 1346.54 169.85 1176.70 225 0.32 1358.47 173.62 1184.85 230 0.32 1369.57 177.40 1192.17 235 0.31 1379.83 181.17 1198.66 240 0.31 1389.27 184.94 1204.32 245 0.30 1397.88 188.72 1209.16 250 0.30 1405.65 192.49 1213.16 255 0.29 1412.60 196.27 1216.33 260 0.29 1418.71 200.04 1218.67 265 0.29 1424.00 203.82 1220.18 270 0.28 1428.45 207.59 1220.86 275 0.28 1432.08 211.37 1220.71 280 0.27 1434.88 215.14 1219.74 285 0.27 1436.84 218.91 1217.93 290 0.26 1437.98 222.69 1215.29 295 0.26 1438.28 226.46 1211.82 300 0.25 1437.76 230.24 1207.52 305 0.25 1436.40 234.01 1202.39 310 0.25 1434.22 237.79 1196.43 315 0.24 1431.20 241.56 1189.64 320 0.24 1427.36 245.33 1182.02 325 0.23 1422.68 249.11 1173.57 330 0.23 1417.17 252.88 1164.29 335 0.22 1410.84 256.66 1154.18 340 0.22 1403.67 260.43 1143.24 345 0.22 1395.68 264.21 1131.47 350 0.21 1386.85 267.98 1118.87 355 0.21 1377.20 271.76 1105.44 360 0.20 1366.72 275.53 1091.19 365 0.20 1378.55 279.30 1099.25 370 0.20 1390.20 283.08 1107.12 375 0.20 1401.64 286.85 1114.79 380 0.20 1412.89 290.63 1122.26 385 0.20 1423.94 294.40 1129.54 390 0.20 1434.80 298.18 1136.62 395 0.19 1445.46 301.95 1143.51 400 0.19 1455.93 305.73 1150.20 405 0.19 1466.20 309.50 1156.70 410 0.19 1476.27 313.27 1163.00 415 0.19 1486.15 317.05 1169.10 420 0.19 1495.83 320.82 1175.01 425 0.19 1505.32 324.60 1180.72 430 0.19 1514.61 328.37 1186.24 435 0.19 1523.71 332.15 1191.56 440 0.19 1532.61 335.92 1196.69 445 0.18 1541.31 339.69 1201.62 450 0.18 1549.82 343.47 1206.35 455 0.18 1558.13 347.24 1210.89 460 0.18 1566.25 351.02 1215.23 465 0.18 1574.17 354.79 1219.38 470 0.18 1581.90 358.57 1223.33 475 0.18 1589.43 362.34 1227.08 480 0.18 1596.76 366.12 1230.64 485 0.18 1603.90 369.89 1234.01 490 0.17 1610.84 373.66 1237.18 495 0.17 1617.59 377.44 1240.15 500 0.17 1624.14 381.21 1242.92 505 0.17 1630.49 384.99 1245.50 510 0.17 1636.65 388.76 1247.89 515 0.17 1642.61 392.54 1250.08 520 0.17 1648.38 396.31 1252.07 525 0.17 1653.95 400.08 1253.87 530 0.17 1659.33 403.86 1255.47 535 0.17 1664.51 407.63 1256.87 540 0.16 1669.49 411.41 1258.08 545 0.16 1674.28 415.18 1259.10 550 0.16 1678.87 418.96 1259.92 555 0.16 1683.27 422.73 1260.54 560 0.16 1687.47 426.51 1260.97 565 0.16 1691.48 430.28 1261.20 570 0.16 1695.29 434.05 1261.23 575 0.16 1698.90 437.83 1261.07 580 0.16 1702.32 441.60 1260.72 585 0.16 1705.54 445.38 1260.16 590 0.15 1708.57 449.15 1259.42 595 0.15 1711.40 452.93 1258.47 600 0.15 1714.03 456.70 1257.33 605 0.15 1716.47 460.47 1256.00 610 0.15 1718.72 464.25 1254.47 615 0.15 1720.76 468.02 1252.74 620 0.15 1722.62 471.80 1250.82 625 0.15 1724.27 475.57 1248.70 630 0.15 1725.73 479.35 1246.39 635 0.14 1727.00 483.12 1243.88 640 0.14 1728.07 486.90 1241.17 645 0.14 1728.94 490.67 1238.27 650 0.14 1729.62 494.44 1235.17 655 0.14 1730.10 498.22 1231.88 660 0.14 1730.38 501.99 1228.39 665 0.14 1730.47 505.77 1224.71 670 0.14 1730.37 509.54 1220.83 675 0.14 1730.07 513.32 1216.75 680 0.14 1729.57 517.09 1212.48 685 0.13 1728.88 520.86 1208.01 690 0.13 1727.99 524.64 1203.35 695 0.13 1726.90 528.41 1198.49 700 0.13 1725.62 532.19 1193.43 705 0.13 1724.15 535.96 1188.18 710 0.13 1722.47 539.74 1182.74 715 0.13 1720.61 543.51 1177.10 720 0.13 1718.55 547.29 1171.26 725 0.13 1726.13 551.06 1175.07 730 0.13 1733.65 554.83 1178.82 735 0.13 1741.11 558.61 1182.50 740 0.13 1748.51 562.38 1186.13 745 0.13 1755.85 566.16 1189.70 750 0.13 1763.14 569.93 1193.20 755 0.12 1770.36 573.71 1196.65 760 0.12 1777.52 577.48 1200.04 765 0.12 1784.62 581.26 1203.37 770 0.12 1791.66 585.03 1206.63 775 0.12 1798.64 588.80 1209.84 780 0.12 1805.56 592.58 1212.99 785 0.12 1812.43 596.35 1216.07 790 0.12 1819.23 600.13 1219.10 795 0.12 1825.97 603.90 1222.07 800 0.12 1832.65 607.68 1224.97 805 0.12 1839.27 611.45 1227.82 810 0.12 1845.83 615.22 1230.61 815 0.12 1852.33 619.00 1233.33 820 0.12 1858.77 622.77 1236.00 825 0.12 1865.15 626.55 1238.61 830 0.12 1871.47 630.32 1241.15 835 0.12 1877.74 634.10 1243.64 840 0.12 1883.94 637.87 1246.07 845 0.12 1890.08 641.65 1248.43 850 0.12 1896.16 645.42 1250.74 855 0.12 1902.18 649.19 1252.98 860 0.12 1908.14 652.97 1255.17 865 0.12 1914.04 656.74 1257.30 870 0.12 1919.88 660.52 1259.36 875 0.12 1925.66 664.29 1261.37 880 0.12 1931.38 668.07 1263.32 885 0.12 1937.04 671.84 1265.20 890 0.12 1942.64 675.61 1267.03 895 0.12 1948.18 679.39 1268.79 900 0.12 1953.66 683.16 1270.50 905 0.12 1959.08 686.94 1272.15 910 0.11 1964.44 690.71 1273.73 915 0.11 1969.74 694.49 1275.26 920 0.11 1974.98 698.26 1276.72 925 0.11 1980.16 702.04 1278.13 930 0.11 1985.28 705.81 1279.47 935 0.11 1990.34 709.58 1280.76 940 0.11 1995.34 713.36 1281.99 945 0.11 2000.28 717.13 1283.15 950 0.11 2005.16 720.91 1284.26 955 0.11 2009.98 724.68 1285.30 960 0.11 2014.74 728.46 1286.29 965 0.11 2019.44 732.23 1287.21 970 0.11 2024.08 736.00 1288.08 975 0.11 2028.66 739.78 1288.89 980 0.11 2033.18 743.55 1289.63 985 0.11 2037.64 747.33 1290.32 990 0.11 2042.04 751.10 1290.94 995 0.11 2046.38 754.88 1291.51 1000 0.11 2050.66 758.65 1292.01 1005 0.11 2054.88 762.43 1292.46 1010 0.11 2059.04 766.20 1292.84 1015 0.11 2063.14 769.97 1293.17 1020 0.11 2067.18 773.75 1293.43 1025 0.11 2071.16 777.52 1293.64 1030 0.11 2075.08 781.30 1293.78 1035 0.11 2078.94 785.07 1293.87 1040 0.11 2082.74 788.85 1293.89 1045 0.11 2086.48 792.62 1293.86 1050 0.11 2090.16 796.39 1293.76 1055 0.11 2093.78 800.17 1293.61 1060 0.11 2097.34 803.94 1293.39 1065 0.10 2100.83 807.72 1293.12 1070 0.10 2104.27 811.49 1292.78 1075 0.10 2107.65 815.27 1292.39 1080 0.10 2110.97 819.04 1291.93 1085 0.10 2114.23 822.82 1291.41 1090 0.10 2117.43 826.59 1290.84 1095 0.10 2120.57 830.36 1290.20 1100 0.10 2123.65 834.14 1289.51 1105 0.10 2126.67 837.91 1288.75 1110 0.10 2129.62 841.69 1287.94 1115 0.10 2132.52 845.46 1287.06 1120 0.10 2135.36 849.24 1286.13 1125 0.10 2138.14 853.01 1285.13 1130 0.10 2140.86 856.79 1284.07 1135 0.10 2143.52 860.56 1282.96 1140 0.10 2146.12 864.33 1281.78 1145 0.10 2148.66 868.11 1280.55 1150 0.10 2151.13 871.88 1279.25 1155 0.10 2153.55 875.66 1277.90 1160 0.10 2155.91 879.43 1276.48 1165 0.10 2158.21 883.21 1275.00 1170 0.10 2160.45 886.98 1273.47 1175 0.10 2162.63 890.75 1271.87 1180 0.10 2164.74 894.53 1270.22 1185 0.10 2166.80 898.30 1268.50 1190 0.10 2168.80 902.08 1266.72 1195 0.10 2170.74 905.85 1264.89 1200 0.10 2172.62 909.63 1262.99 1205 0.10 2174.44 913.40 1261.03 1210 0.10 2176.19 917.18 1259.02 1215 0.10 2177.89 920.95 1256.94 1220 0.10 2179.53 924.72 1254.81 1225 0.09 2181.11 928.50 1252.61 1230 0.09 2182.63 932.27 1250.35 1235 0.09 2184.08 936.05 1248.04 1240 0.09 2185.48 939.82 1245.66 1245 0.09 2186.82 943.60 1243.22 1250 0.09 2188.10 947.37 1240.73 1255 0.09 2189.31 951.14 1238.17 1260 0.09 2190.47 954.92 1235.55 1265 0.09 2191.57 958.69 1232.88 1270 0.09 2192.61 962.47 1230.14 1275 0.09 2193.58 966.24 1227.34 1280 0.09 2194.50 970.02 1224.49 1285 0.09 2195.36 973.79 1221.57 1290 0.09 2196.16 977.57 1218.59 1295 0.09 2196.89 981.34 1215.55 1300 0.09 2197.57 985.11 1212.46 1305 0.09 2198.19 988.89 1209.30 1310 0.09 2198.75 992.66 1206.08 1315 0.09 2199.24 996.44 1202.81 1320 0.09 2199.68 1000.21 1199.47 1325 0.09 2200.06 1003.99 1196.07 1330 0.09 2200.38 1007.76 1192.62 1335 0.09 2200.63 1011.53 1189.10 1340 0.09 2200.83 1015.31 1185.52 1345 0.09 2200.97 1019.08 1181.88 1350 0.09 2201.04 1022.86 1178.19 1355 0.09 2201.06 1026.63 1174.43 1360 0.09 2201.02 1030.41 1170.61 1365 0.09 2200.91 1034.18 1166.73 1370 0.09 2200.75 1037.96 1162.80 1375 0.09 2200.53 1041.73 1158.80 1380 0.08 2200.25 1045.50 1154.74 1385 0.08 2199.90 1049.28 1150.62 1390 0.08 2199.50 1053.05 1146.45 1395 0.08 2199.04 1056.83 1142.21 1400 0.08 2198.51 1060.60 1137.91 1405 0.08 2197.93 1064.38 1133.55 1410 0.08 2197.29 1068.15 1129.13 1415 0.08 2196.58 1071.93 1124.66 1420 0.08 2195.82 1075.70 1120.12 1425 0.08 2194.99 1079.47 1115.52 1430 0.08 2194.11 1083.25 1110.86 1435 0.08 2193.17 1087.02 1106.14 1440 0.08 2192.16 1090.80 1101.37 Maximum Difference 1293.89 25 Year Storage Calculations ‐ Basin 7 (Pre) Rainfall Duration  (minutes) Intensity (inches/Hour)       EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference ft3  EQ 5‐4 C 0.370  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 27993.00 ft2 5 4.67 335.90 5.78 330.12 Tc 5 Minutes 10 3.41 490.54 8.67 481.87 Qa 0.019 ft3 15 2.78 599.87 11.56 588.31 P24(25)0.952 20 2.42 696.25 14.44 681.80 25 2.06 740.84 17.33 723.51 30 1.70 733.65 20.22 713.43 35 1.58 793.16 23.11 770.04 40 1.45 834.73 26.00 808.73 45 1.33 858.36 28.89 829.47 50 1.20 864.07 31.78 832.29 55 1.08 851.84 34.67 817.17 60 0.95 821.69 37.56 784.13 65 0.92 856.97 40.45 816.52 Storage Volume 303.54 70 0.88 887.14 43.33 843.81 75 0.85 912.21 46.22 865.98 80 0.81 932.17 49.11 883.05 85 0.77 947.02 52.00 895.02 90 0.74 956.77 54.89 901.88 95 0.70 961.41 57.78 903.63 100 0.67 960.94 60.67 900.27 105 0.63 955.36 63.56 891.81 110 0.60 944.68 66.45 878.24 115 0.56 928.89 69.33 859.56 120 0.53 908.00 72.22 835.78 125 0.51 921.11 75.11 846.00 130 0.50 932.24 78.00 854.24 135 0.48 941.39 80.89 860.50 140 0.47 948.57 83.78 864.79 145 0.46 953.76 86.67 867.09 150 0.44 956.98 89.56 867.42 155 0.43 958.22 92.45 865.78 160 0.42 957.49 95.34 862.15 165 0.40 954.77 98.22 856.55 170 0.39 950.08 101.11 848.96 175 0.37 943.41 104.00 839.40 180 0.36 934.76 106.89 827.87 185 0.36 948.97 109.78 839.19 190 0.35 962.54 112.67 849.87 195 0.35 975.48 115.56 859.93 200 0.34 987.79 118.45 869.34 205 0.34 999.46 121.34 878.12 210 0.33 1010.49 124.22 886.27 215 0.33 1020.89 127.11 893.78 220 0.33 1030.66 130.00 900.65 225 0.32 1039.79 132.89 906.89 230 0.32 1048.28 135.78 912.50 235 0.31 1056.14 138.67 917.47 240 0.31 1063.36 141.56 921.80 245 0.30 1069.95 144.45 925.50 250 0.30 1075.90 147.34 928.56 255 0.29 1081.21 150.23 930.99 260 0.29 1085.90 153.11 932.78 265 0.29 1089.94 156.00 933.94 270 0.28 1093.35 158.89 934.46 275 0.28 1096.13 161.78 934.35 280 0.27 1098.27 164.67 933.60 285 0.27 1099.77 167.56 932.21 290 0.26 1100.64 170.45 930.19 295 0.26 1100.87 173.34 927.54 300 0.25 1100.47 176.23 924.25 305 0.25 1099.43 179.11 920.32 310 0.25 1097.76 182.00 915.76 315 0.24 1095.45 184.89 910.56 320 0.24 1092.51 187.78 904.73 325 0.23 1088.93 190.67 898.26 330 0.23 1084.72 193.56 891.16 335 0.22 1079.87 196.45 883.42 340 0.22 1074.38 199.34 875.05 345 0.22 1068.26 202.23 866.04 350 0.21 1061.51 205.12 856.39 355 0.21 1054.12 208.00 846.11 360 0.20 1046.10 210.89 835.21 365 0.20 1055.16 213.78 841.38 370 0.20 1064.07 216.67 847.40 375 0.20 1072.83 219.56 853.27 380 0.20 1081.44 222.45 858.99 385 0.20 1089.90 225.34 864.56 390 0.20 1098.21 228.23 869.98 395 0.19 1106.37 231.12 875.25 400 0.19 1114.38 234.00 880.38 405 0.19 1122.24 236.89 885.35 410 0.19 1129.95 239.78 890.17 415 0.19 1137.51 242.67 894.84 420 0.19 1144.93 245.56 899.36 425 0.19 1152.19 248.45 903.74 430 0.19 1159.30 251.34 907.96 435 0.19 1166.26 254.23 912.03 440 0.19 1173.07 257.12 915.96 445 0.18 1179.73 260.01 919.73 450 0.18 1186.25 262.89 923.35 455 0.18 1192.61 265.78 926.83 460 0.18 1198.82 268.67 930.15 465 0.18 1204.88 271.56 933.32 470 0.18 1210.80 274.45 936.35 475 0.18 1216.56 277.34 939.22 480 0.18 1222.17 280.23 941.95 485 0.18 1227.64 283.12 944.52 490 0.17 1232.95 286.01 946.94 495 0.17 1238.11 288.89 949.22 500 0.17 1243.13 291.78 951.34 505 0.17 1247.99 294.67 953.32 510 0.17 1252.71 297.56 955.14 515 0.17 1257.27 300.45 956.82 520 0.17 1261.69 303.34 958.35 525 0.17 1265.95 306.23 959.72 530 0.17 1270.06 309.12 960.95 535 0.17 1274.03 312.01 962.02 540 0.16 1277.84 314.90 962.95 545 0.16 1281.51 317.78 963.73 550 0.16 1285.03 320.67 964.35 555 0.16 1288.39 323.56 964.83 560 0.16 1291.61 326.45 965.16 565 0.16 1294.67 329.34 965.33 570 0.16 1297.59 332.23 965.36 575 0.16 1300.35 335.12 965.24 580 0.16 1302.97 338.01 964.96 585 0.16 1305.44 340.90 964.54 590 0.15 1307.75 343.78 963.97 595 0.15 1309.92 346.67 963.25 600 0.15 1311.94 349.56 962.37 605 0.15 1313.80 352.45 961.35 610 0.15 1315.52 355.34 960.18 615 0.15 1317.09 358.23 958.86 620 0.15 1318.51 361.12 957.39 625 0.15 1319.77 364.01 955.77 630 0.15 1320.89 366.90 954.00 635 0.14 1321.86 369.79 952.07 640 0.14 1322.68 372.67 950.00 645 0.14 1323.35 375.56 947.78 650 0.14 1323.86 378.45 945.41 655 0.14 1324.23 381.34 942.89 660 0.14 1324.45 384.23 940.22 665 0.14 1324.52 387.12 937.40 670 0.14 1324.44 390.01 934.43 675 0.14 1324.21 392.90 931.31 680 0.14 1323.83 395.79 928.04 685 0.13 1323.30 398.67 924.62 690 0.13 1322.62 401.56 921.05 695 0.13 1321.79 404.45 917.33 700 0.13 1320.81 407.34 913.47 705 0.13 1319.68 410.23 909.45 710 0.13 1318.40 413.12 905.28 715 0.13 1316.97 416.01 900.96 720 0.13 1315.39 418.90 896.49 725 0.13 1321.19 421.79 899.41 730 0.13 1326.95 424.68 902.28 735 0.13 1332.66 427.56 905.10 740 0.13 1338.33 430.45 907.87 745 0.13 1343.95 433.34 910.60 750 0.13 1349.52 436.23 913.29 755 0.12 1355.05 439.12 915.93 760 0.12 1360.53 442.01 918.52 765 0.12 1365.96 444.90 921.07 770 0.12 1371.35 447.79 923.57 775 0.12 1376.70 450.68 926.02 780 0.12 1382.00 453.56 928.43 785 0.12 1387.25 456.45 930.79 790 0.12 1392.45 459.34 933.11 795 0.12 1397.61 462.23 935.38 800 0.12 1402.73 465.12 937.61 805 0.12 1407.79 468.01 939.78 810 0.12 1412.82 470.90 941.92 815 0.12 1417.79 473.79 944.00 820 0.12 1422.72 476.68 946.05 825 0.12 1427.61 479.57 948.04 830 0.12 1432.44 482.45 949.99 835 0.12 1437.24 485.34 951.89 840 0.12 1441.98 488.23 953.75 845 0.12 1446.68 491.12 955.56 850 0.12 1451.34 494.01 957.33 855 0.12 1455.94 496.90 959.05 860 0.12 1460.51 499.79 960.72 865 0.12 1465.02 502.68 962.35 870 0.12 1469.49 505.57 963.93 875 0.12 1473.92 508.45 965.46 880 0.12 1478.30 511.34 966.95 885 0.12 1482.63 514.23 968.40 890 0.12 1486.92 517.12 969.79 895 0.12 1491.16 520.01 971.15 900 0.12 1495.35 522.90 972.45 905 0.12 1499.50 525.79 973.71 910 0.11 1503.60 528.68 974.93 915 0.11 1507.66 531.57 976.09 920 0.11 1511.67 534.46 977.22 925 0.11 1515.64 537.34 978.29 930 0.11 1519.55 540.23 979.32 935 0.11 1523.43 543.12 980.31 940 0.11 1527.25 546.01 981.24 945 0.11 1531.04 548.90 982.14 950 0.11 1534.77 551.79 982.98 955 0.11 1538.46 554.68 983.78 960 0.11 1542.10 557.57 984.54 965 0.11 1545.70 560.46 985.25 970 0.11 1549.25 563.34 985.91 975 0.11 1552.76 566.23 986.52 980 0.11 1556.22 569.12 987.09 985 0.11 1559.63 572.01 987.62 990 0.11 1563.00 574.90 988.10 995 0.11 1566.32 577.79 988.53 1000 0.11 1569.60 580.68 988.92 1005 0.11 1572.83 583.57 989.26 1010 0.11 1576.01 586.46 989.55 1015 0.11 1579.15 589.35 989.80 1020 0.11 1582.24 592.23 990.00 1025 0.11 1585.28 595.12 990.16 1030 0.11 1588.28 598.01 990.27 1035 0.11 1591.24 600.90 990.34 1040 0.11 1594.15 603.79 990.36 1045 0.11 1597.01 606.68 990.33 1050 0.11 1599.82 609.57 990.26 1055 0.11 1602.59 612.46 990.14 1060 0.11 1605.32 615.35 989.97 1065 0.10 1608.00 618.23 989.76 1070 0.10 1610.63 621.12 989.51 1075 0.10 1613.22 624.01 989.20 1080 0.10 1615.76 626.90 988.85 1085 0.10 1618.25 629.79 988.46 1090 0.10 1620.70 632.68 988.02 1095 0.10 1623.10 635.57 987.53 1100 0.10 1625.46 638.46 987.00 1105 0.10 1627.77 641.35 986.42 1110 0.10 1630.03 644.24 985.80 1115 0.10 1632.25 647.12 985.13 1120 0.10 1634.43 650.01 984.41 1125 0.10 1636.55 652.90 983.65 1130 0.10 1638.63 655.79 982.84 1135 0.10 1640.67 658.68 981.99 1140 0.10 1642.66 661.57 981.09 1145 0.10 1644.60 664.46 980.14 1150 0.10 1646.50 667.35 979.15 1155 0.10 1648.35 670.24 978.11 1160 0.10 1650.15 673.12 977.03 1165 0.10 1651.91 676.01 975.90 1170 0.10 1653.63 678.90 974.72 1175 0.10 1655.29 681.79 973.50 1180 0.10 1656.91 684.68 972.23 1185 0.10 1658.49 687.57 970.92 1190 0.10 1660.02 690.46 969.56 1195 0.10 1661.50 693.35 968.16 1200 0.10 1662.94 696.24 966.70 1205 0.10 1664.33 699.13 965.21 1210 0.10 1665.68 702.01 963.66 1215 0.10 1666.98 704.90 962.07 1220 0.10 1668.23 707.79 960.44 1225 0.09 1669.44 710.68 958.76 1230 0.09 1670.60 713.57 957.03 1235 0.09 1671.72 716.46 955.26 1240 0.09 1672.79 719.35 953.44 1245 0.09 1673.81 722.24 951.57 1250 0.09 1674.79 725.13 949.66 1255 0.09 1675.72 728.01 947.71 1260 0.09 1676.61 730.90 945.70 1265 0.09 1677.45 733.79 943.65 1270 0.09 1678.24 736.68 941.56 1275 0.09 1678.99 739.57 939.42 1280 0.09 1679.69 742.46 937.23 1285 0.09 1680.35 745.35 935.00 1290 0.09 1680.96 748.24 932.72 1295 0.09 1681.52 751.13 930.40 1300 0.09 1682.04 754.02 928.03 1305 0.09 1682.51 756.90 925.61 1310 0.09 1682.94 759.79 923.15 1315 0.09 1683.32 762.68 920.64 1320 0.09 1683.66 765.57 918.08 1325 0.09 1683.94 768.46 915.48 1330 0.09 1684.19 771.35 912.84 1335 0.09 1684.38 774.24 910.15 1340 0.09 1684.53 777.13 907.41 1345 0.09 1684.64 780.02 904.62 1350 0.09 1684.70 782.90 901.79 1355 0.09 1684.71 785.79 898.92 1360 0.09 1684.68 788.68 896.00 1365 0.09 1684.60 791.57 893.03 1370 0.09 1684.47 794.46 890.01 1375 0.09 1684.30 797.35 886.95 1380 0.08 1684.09 800.24 883.85 1385 0.08 1683.82 803.13 880.70 1390 0.08 1683.52 806.02 877.50 1395 0.08 1683.16 808.91 874.26 1400 0.08 1682.76 811.79 870.97 1405 0.08 1682.31 814.68 867.63 1410 0.08 1681.82 817.57 864.25 1415 0.08 1681.28 820.46 860.82 1420 0.08 1680.70 823.35 857.35 1425 0.08 1680.07 826.24 853.83 1430 0.08 1679.39 829.13 850.26 1435 0.08 1678.67 832.02 846.65 1440 0.08 1677.90 834.91 842.99 Maximum Difference 990.36 25 Year Storage Calculations ‐ Basin 8 (Developed) Rainfall Duration  (minutes) Intensity (inches/Hour)      EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference  ft3 EQ 5‐4 C 0.444  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 15591.00 ft2 5 4.67 224.61 6.57 218.04 Tc 12 Minutes 10 3.41 328.02 8.50 319.52 Qa 0.013 ft3 15 2.78 401.12 10.43 390.69 P24(25)0.952 20 2.42 465.57 12.36 453.21 25 2.06 495.39 14.30 481.10 30 1.70 490.58 16.23 474.36 35 1.58 530.38 18.16 512.22 40 1.45 558.17 20.09 538.08 45 1.33 573.98 22.02 551.96 50 1.20 577.79 23.95 553.84 55 1.08 569.61 25.89 543.73 60 0.95 549.45 27.82 521.64 65 0.92 573.05 29.75 543.30 70 0.88 593.22 31.68 561.54 75 0.85 609.98 33.61 576.37 80 0.81 623.33 35.55 587.79 85 0.77 633.26 37.48 595.79 90 0.74 639.78 39.41 600.37 95 0.70 642.88 41.34 601.54 100 0.67 642.57 43.27 599.30 105 0.63 638.84 45.20 593.64 110 0.60 631.70 47.14 584.56 115 0.56 621.14 49.07 572.07 120 0.53 607.17 51.00 556.17 125 0.51 615.94 52.93 563.00 130 0.50 623.38 54.86 568.52 135 0.48 629.50 56.80 572.70 140 0.47 634.30 58.73 575.57 145 0.46 637.77 60.66 577.11 150 0.44 639.92 62.59 577.33 155 0.43 640.75 64.52 576.23 160 0.42 640.26 66.45 573.81 165 0.40 638.45 68.39 570.06 170 0.39 635.31 70.32 564.99 175 0.37 630.85 72.25 558.60 180 0.36 625.06 74.18 550.88 185 0.36 634.57 76.11 558.45 190 0.35 643.64 78.05 565.60 195 0.35 652.30 79.98 572.32 200 0.34 660.53 81.91 578.62 205 0.34 668.33 83.84 584.49 210 0.33 675.71 85.77 589.94 215 0.33 682.66 87.70 594.96 220 0.33 689.19 89.64 599.55 225 0.32 695.29 91.57 603.73 230 0.32 700.97 93.50 607.47 235 0.31 706.23 95.43 610.80 240 0.31 711.06 97.36 613.69 245 0.30 715.46 99.30 616.17 250 0.30 719.44 101.23 618.22 255 0.29 723.00 103.16 619.84 260 0.29 726.13 105.09 621.04 265 0.29 728.83 107.02 621.81 270 0.28 731.11 108.95 622.16 275 0.28 732.97 110.89 622.08 280 0.27 734.40 112.82 621.58 285 0.27 735.41 114.75 620.66 290 0.26 735.99 116.68 619.31 295 0.26 736.14 118.61 617.53 300 0.25 735.87 120.54 615.33 305 0.25 735.18 122.48 612.70 310 0.25 734.06 124.41 609.65 315 0.24 732.52 126.34 606.18 320 0.24 730.55 128.27 602.28 325 0.23 728.16 130.20 597.95 330 0.23 725.34 132.14 593.20 335 0.22 722.10 134.07 588.03 340 0.22 718.43 136.00 582.43 345 0.22 714.34 137.93 576.41 350 0.21 709.82 139.86 569.96 355 0.21 704.88 141.79 563.08 360 0.20 699.52 143.73 555.79 365 0.20 705.57 145.66 559.92 370 0.20 711.53 147.59 563.94 375 0.20 717.39 149.52 567.87 380 0.20 723.15 151.45 571.69 385 0.20 728.80 153.39 575.42 390 0.20 734.36 155.32 579.04 395 0.19 739.82 157.25 582.57 400 0.19 745.18 159.18 585.99 405 0.19 750.43 161.11 589.32 410 0.19 755.59 163.04 592.54 415 0.19 760.64 164.98 595.67 420 0.19 765.60 166.91 598.69 425 0.19 770.46 168.84 601.62 430 0.19 775.21 170.77 604.44 435 0.19 779.87 172.70 607.16 440 0.19 784.42 174.64 609.79 445 0.18 788.88 176.57 612.31 450 0.18 793.23 178.50 614.73 455 0.18 797.49 180.43 617.05 460 0.18 801.64 182.36 619.28 465 0.18 805.69 184.29 621.40 470 0.18 809.65 186.23 623.42 475 0.18 813.50 188.16 625.34 480 0.18 817.26 190.09 627.17 485 0.18 820.91 192.02 628.89 490 0.17 824.46 193.95 630.51 495 0.17 827.91 195.89 632.03 500 0.17 831.27 197.82 633.45 505 0.17 834.52 199.75 634.77 510 0.17 837.67 201.68 635.99 515 0.17 840.72 203.61 637.11 520 0.17 843.68 205.54 638.13 525 0.17 846.53 207.48 639.05 530 0.17 849.28 209.41 639.87 535 0.17 851.93 211.34 640.59 540 0.16 854.48 213.27 641.21 545 0.16 856.93 215.20 641.73 550 0.16 859.28 217.14 642.15 555 0.16 861.53 219.07 642.47 560 0.16 863.68 221.00 642.69 565 0.16 865.73 222.93 642.80 570 0.16 867.68 224.86 642.82 575 0.16 869.53 226.79 642.74 580 0.16 871.28 228.73 642.56 585 0.16 872.93 230.66 642.27 590 0.15 874.48 232.59 641.89 595 0.15 875.93 234.52 641.41 600 0.15 877.28 236.45 640.83 605 0.15 878.53 238.39 640.14 610 0.15 879.68 240.32 639.36 615 0.15 880.72 242.25 638.48 620 0.15 881.67 244.18 637.49 625 0.15 882.52 246.11 636.41 630 0.15 883.27 248.04 635.22 635 0.14 883.91 249.98 633.94 640 0.14 884.46 251.91 632.55 645 0.14 884.91 253.84 631.07 650 0.14 885.26 255.77 629.48 655 0.14 885.50 257.70 627.80 660 0.14 885.65 259.64 626.01 665 0.14 885.69 261.57 624.13 670 0.14 885.64 263.50 622.14 675 0.14 885.49 265.43 620.05 680 0.14 885.23 267.36 617.87 685 0.13 884.88 269.29 615.58 690 0.13 884.42 271.23 613.19 695 0.13 883.87 273.16 610.71 700 0.13 883.21 275.09 608.12 705 0.13 882.46 277.02 605.43 710 0.13 881.60 278.95 602.65 715 0.13 880.64 280.89 599.76 720 0.13 879.59 282.82 596.77 725 0.13 883.47 284.75 598.72 730 0.13 887.32 286.68 600.64 735 0.13 891.14 288.61 602.53 740 0.13 894.93 290.54 604.38 745 0.13 898.68 292.48 606.21 750 0.13 902.41 294.41 608.00 755 0.12 906.11 296.34 609.77 760 0.12 909.77 298.27 611.50 765 0.12 913.41 300.20 613.20 770 0.12 917.01 302.14 614.88 775 0.12 920.58 304.07 616.52 780 0.12 924.13 306.00 618.13 785 0.12 927.64 307.93 619.71 790 0.12 931.12 309.86 621.26 795 0.12 934.57 311.79 622.78 800 0.12 937.99 313.73 624.26 805 0.12 941.38 315.66 625.72 810 0.12 944.74 317.59 627.15 815 0.12 948.06 319.52 628.54 820 0.12 951.36 321.45 629.91 825 0.12 954.63 323.38 631.24 830 0.12 957.86 325.32 632.54 835 0.12 961.07 327.25 633.82 840 0.12 964.24 329.18 635.06 845 0.12 967.38 331.11 636.27 850 0.12 970.49 333.04 637.45 855 0.12 973.58 334.98 638.60 860 0.12 976.63 336.91 639.72 865 0.12 979.65 338.84 640.81 870 0.12 982.64 340.77 641.86 875 0.12 985.59 342.70 642.89 880 0.12 988.52 344.63 643.89 885 0.12 991.42 346.57 644.85 890 0.12 994.29 348.50 645.79 895 0.12 997.12 350.43 646.69 900 0.12 999.93 352.36 647.56 905 0.12 1002.70 354.29 648.41 910 0.11 1005.44 356.23 649.22 915 0.11 1008.16 358.16 650.00 920 0.11 1010.84 360.09 650.75 925 0.11 1013.49 362.02 651.47 930 0.11 1016.11 363.95 652.16 935 0.11 1018.70 365.88 652.82 940 0.11 1021.26 367.82 653.44 945 0.11 1023.79 369.75 654.04 950 0.11 1026.29 371.68 654.61 955 0.11 1028.75 373.61 655.14 960 0.11 1031.19 375.54 655.65 965 0.11 1033.59 377.48 656.12 970 0.11 1035.97 379.41 656.56 975 0.11 1038.31 381.34 656.97 980 0.11 1040.63 383.27 657.36 985 0.11 1042.91 385.20 657.71 990 0.11 1045.16 387.13 658.03 995 0.11 1047.38 389.07 658.32 1000 0.11 1049.57 391.00 658.57 1005 0.11 1051.73 392.93 658.80 1010 0.11 1053.86 394.86 659.00 1015 0.11 1055.96 396.79 659.17 1020 0.11 1058.03 398.73 659.30 1025 0.11 1060.06 400.66 659.41 1030 0.11 1062.07 402.59 659.48 1035 0.11 1064.05 404.52 659.52 1040 0.11 1065.99 406.45 659.54 1045 0.11 1067.90 408.38 659.52 1050 0.11 1069.79 410.32 659.47 1055 0.11 1071.64 412.25 659.39 1060 0.11 1073.46 414.18 659.28 1065 0.10 1075.25 416.11 659.14 1070 0.10 1077.01 418.04 658.97 1075 0.10 1078.74 419.98 658.77 1080 0.10 1080.44 421.91 658.53 1085 0.10 1082.11 423.84 658.27 1090 0.10 1083.75 425.77 657.97 1095 0.10 1085.35 427.70 657.65 1100 0.10 1086.93 429.63 657.29 1105 0.10 1088.47 431.57 656.91 1110 0.10 1089.99 433.50 656.49 1115 0.10 1091.47 435.43 656.04 1120 0.10 1092.92 437.36 655.56 1125 0.10 1094.35 439.29 655.05 1130 0.10 1095.74 441.23 654.51 1135 0.10 1097.10 443.16 653.94 1140 0.10 1098.43 445.09 653.34 1145 0.10 1099.73 447.02 652.71 1150 0.10 1101.00 448.95 652.04 1155 0.10 1102.23 450.88 651.35 1160 0.10 1103.44 452.82 650.62 1165 0.10 1104.62 454.75 649.87 1170 0.10 1105.76 456.68 649.08 1175 0.10 1106.88 458.61 648.27 1180 0.10 1107.96 460.54 647.42 1185 0.10 1109.02 462.48 646.54 1190 0.10 1110.04 464.41 645.63 1195 0.10 1111.03 466.34 644.69 1200 0.10 1111.99 468.27 643.72 1205 0.10 1112.92 470.20 642.72 1210 0.10 1113.82 472.13 641.69 1215 0.10 1114.69 474.07 640.62 1220 0.10 1115.53 476.00 639.53 1225 0.09 1116.34 477.93 638.41 1230 0.09 1117.11 479.86 637.25 1235 0.09 1117.86 481.79 636.07 1240 0.09 1118.58 483.73 634.85 1245 0.09 1119.26 485.66 633.60 1250 0.09 1119.91 487.59 632.33 1255 0.09 1120.54 489.52 631.02 1260 0.09 1121.13 491.45 629.68 1265 0.09 1121.69 493.38 628.31 1270 0.09 1122.22 495.32 626.91 1275 0.09 1122.72 497.25 625.48 1280 0.09 1123.19 499.18 624.01 1285 0.09 1123.63 501.11 622.52 1290 0.09 1124.04 503.04 621.00 1295 0.09 1124.42 504.98 619.44 1300 0.09 1124.76 506.91 617.86 1305 0.09 1125.08 508.84 616.24 1310 0.09 1125.37 510.77 614.59 1315 0.09 1125.62 512.70 612.92 1320 0.09 1125.84 514.63 611.21 1325 0.09 1126.04 516.57 609.47 1330 0.09 1126.20 518.50 607.70 1335 0.09 1126.33 520.43 605.90 1340 0.09 1126.43 522.36 604.07 1345 0.09 1126.50 524.29 602.21 1350 0.09 1126.54 526.23 600.32 1355 0.09 1126.55 528.16 598.39 1360 0.09 1126.53 530.09 596.44 1365 0.09 1126.47 532.02 594.45 1370 0.09 1126.39 533.95 592.44 1375 0.09 1126.28 535.88 590.39 1380 0.08 1126.13 537.82 588.32 1385 0.08 1125.96 539.75 586.21 1390 0.08 1125.75 541.68 584.07 1395 0.08 1125.51 543.61 581.90 1400 0.08 1125.25 545.54 579.70 1405 0.08 1124.95 547.47 577.47 1410 0.08 1124.62 549.41 575.21 1415 0.08 1124.26 551.34 572.92 1420 0.08 1123.87 553.27 570.60 1425 0.08 1123.44 555.20 568.24 1430 0.08 1122.99 557.13 565.86 1435 0.08 1122.51 559.07 563.44 1440 0.08 1122.00 561.00 561.00 Maximum Difference 659.54 25 Year Storage Calculations ‐ Basin 8 (Pre) Rainfall Duration  (minutes) Intensity (inches/Hour)       EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference ft3  EQ 5‐4 C 0.370  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 15591.00 ft2 5 4.67 187.08 5.47 181.61 Tc 12 Minutes 10 3.41 273.21 7.08 266.13 Qa 0.011 ft3 15 2.78 334.10 8.69 325.41 P24(25)0.952 20 2.42 387.78 10.30 377.49 25 2.06 412.62 11.91 400.71 30 1.70 408.61 13.52 395.10 35 1.58 441.76 15.12 426.63 40 1.45 464.91 16.73 448.18 45 1.33 478.07 18.34 459.73 50 1.20 481.25 19.95 461.30 55 1.08 474.44 21.56 452.88 60 0.95 457.65 23.17 434.48 65 0.92 477.30 24.78 452.52 Storage Volume 110.20 70 0.88 494.10 26.39 467.71 75 0.85 508.06 28.00 480.07 80 0.81 519.18 29.61 489.57 85 0.77 527.45 31.22 496.24 90 0.74 532.88 32.82 500.06 95 0.70 535.46 34.43 501.03 100 0.67 535.20 36.04 499.16 105 0.63 532.10 37.65 494.45 110 0.60 526.15 39.26 486.89 115 0.56 517.36 40.87 476.49 120 0.53 505.72 42.48 463.24 125 0.51 513.02 44.09 468.93 130 0.50 519.22 45.70 473.52 135 0.48 524.32 47.31 477.01 140 0.47 528.31 48.91 479.40 145 0.46 531.21 50.52 480.68 150 0.44 533.00 52.13 480.87 155 0.43 533.69 53.74 479.95 160 0.42 533.28 55.35 477.93 165 0.40 531.77 56.96 474.81 170 0.39 529.16 58.57 470.59 175 0.37 525.44 60.18 465.26 180 0.36 520.62 61.79 458.84 185 0.36 528.54 63.40 465.14 190 0.35 536.10 65.00 471.09 195 0.35 543.31 66.61 476.69 200 0.34 550.16 68.22 481.94 205 0.34 556.66 69.83 486.83 210 0.33 562.81 71.44 491.36 215 0.33 568.60 73.05 495.55 220 0.33 574.04 74.66 499.38 225 0.32 579.12 76.27 502.85 230 0.32 583.85 77.88 505.97 235 0.31 588.23 79.49 508.74 240 0.31 592.25 81.10 511.15 245 0.30 595.92 82.70 513.21 250 0.30 599.23 84.31 514.92 255 0.29 602.19 85.92 516.27 260 0.29 604.80 87.53 517.27 265 0.29 607.05 89.14 517.91 270 0.28 608.95 90.75 518.20 275 0.28 610.50 92.36 518.14 280 0.27 611.69 93.97 517.72 285 0.27 612.53 95.58 516.95 290 0.26 613.01 97.19 515.83 295 0.26 613.14 98.79 514.35 300 0.25 612.92 100.40 512.52 305 0.25 612.34 102.01 510.33 310 0.25 611.41 103.62 507.79 315 0.24 610.12 105.23 504.89 320 0.24 608.49 106.84 501.65 325 0.23 606.49 108.45 498.04 330 0.23 604.15 110.06 494.09 335 0.22 601.44 111.67 489.78 340 0.22 598.39 113.28 485.11 345 0.22 594.98 114.88 480.10 350 0.21 591.22 116.49 474.72 355 0.21 587.10 118.10 469.00 360 0.20 582.64 119.71 462.92 365 0.20 587.68 121.32 466.36 370 0.20 592.64 122.93 469.71 375 0.20 597.52 124.54 472.98 380 0.20 602.32 126.15 476.17 385 0.20 607.03 127.76 479.27 390 0.20 611.66 129.37 482.29 395 0.19 616.20 130.98 485.23 400 0.19 620.67 132.58 488.08 405 0.19 625.04 134.19 490.85 410 0.19 629.34 135.80 493.54 415 0.19 633.55 137.41 496.14 420 0.19 637.68 139.02 498.66 425 0.19 641.72 140.63 501.09 430 0.19 645.68 142.24 503.45 435 0.19 649.56 143.85 505.71 440 0.19 653.36 145.46 507.90 445 0.18 657.07 147.07 510.00 450 0.18 660.69 148.67 512.02 455 0.18 664.24 150.28 513.95 460 0.18 667.70 151.89 515.80 465 0.18 671.07 153.50 517.57 470 0.18 674.37 155.11 519.26 475 0.18 677.58 156.72 520.86 480 0.18 680.70 158.33 522.37 485 0.18 683.75 159.94 523.81 490 0.17 686.71 161.55 525.16 495 0.17 689.58 163.16 526.43 500 0.17 692.37 164.76 527.61 505 0.17 695.08 166.37 528.71 510 0.17 697.71 167.98 529.73 515 0.17 700.25 169.59 530.66 520 0.17 702.71 171.20 531.51 525 0.17 705.08 172.81 532.27 530 0.17 707.38 174.42 532.96 535 0.17 709.58 176.03 533.56 540 0.16 711.71 177.64 534.07 545 0.16 713.75 179.25 534.50 550 0.16 715.71 180.85 534.85 555 0.16 717.58 182.46 535.12 560 0.16 719.37 184.07 535.30 565 0.16 721.08 185.68 535.40 570 0.16 722.71 187.29 535.41 575 0.16 724.25 188.90 535.35 580 0.16 725.70 190.51 535.19 585 0.16 727.08 192.12 534.96 590 0.15 728.37 193.73 534.64 595 0.15 729.57 195.34 534.24 600 0.15 730.70 196.95 533.75 605 0.15 731.74 198.55 533.18 610 0.15 732.69 200.16 532.53 615 0.15 733.57 201.77 531.79 620 0.15 734.36 203.38 530.97 625 0.15 735.06 204.99 530.07 630 0.15 735.68 206.60 529.09 635 0.14 736.22 208.21 528.02 640 0.14 736.68 209.82 526.86 645 0.14 737.05 211.43 525.63 650 0.14 737.34 213.04 524.30 655 0.14 737.55 214.64 522.90 660 0.14 737.67 216.25 521.41 665 0.14 737.71 217.86 519.84 670 0.14 737.66 219.47 518.19 675 0.14 737.53 221.08 516.45 680 0.14 737.32 222.69 514.63 685 0.13 737.02 224.30 512.73 690 0.13 736.65 225.91 510.74 695 0.13 736.18 227.52 508.67 700 0.13 735.64 229.13 506.51 705 0.13 735.01 230.73 504.27 710 0.13 734.30 232.34 501.95 715 0.13 733.50 233.95 499.55 720 0.13 732.62 235.56 497.06 725 0.13 735.85 237.17 498.68 730 0.13 739.06 238.78 500.28 735 0.13 742.24 240.39 501.85 740 0.13 745.40 242.00 503.40 745 0.13 748.53 243.61 504.92 750 0.13 751.63 245.22 506.41 755 0.12 754.71 246.83 507.88 760 0.12 757.76 248.43 509.33 765 0.12 760.79 250.04 510.75 770 0.12 763.79 251.65 512.14 775 0.12 766.77 253.26 513.51 780 0.12 769.72 254.87 514.85 785 0.12 772.64 256.48 516.16 790 0.12 775.54 258.09 517.45 795 0.12 778.41 259.70 518.72 800 0.12 781.26 261.31 519.96 805 0.12 784.09 262.92 521.17 810 0.12 786.88 264.52 522.36 815 0.12 789.65 266.13 523.52 820 0.12 792.40 267.74 524.66 825 0.12 795.12 269.35 525.77 830 0.12 797.81 270.96 526.85 835 0.12 800.48 272.57 527.91 840 0.12 803.13 274.18 528.95 845 0.12 805.74 275.79 529.96 850 0.12 808.34 277.40 530.94 855 0.12 810.90 279.01 531.90 860 0.12 813.44 280.61 532.83 865 0.12 815.96 282.22 533.74 870 0.12 818.45 283.83 534.62 875 0.12 820.91 285.44 535.47 880 0.12 823.35 287.05 536.30 885 0.12 825.77 288.66 537.11 890 0.12 828.15 290.27 537.88 895 0.12 830.52 291.88 538.64 900 0.12 832.85 293.49 539.36 905 0.12 835.16 295.10 540.07 910 0.11 837.45 296.71 540.74 915 0.11 839.71 298.31 541.39 920 0.11 841.94 299.92 542.02 925 0.11 844.15 301.53 542.62 930 0.11 846.33 303.14 543.19 935 0.11 848.49 304.75 543.74 940 0.11 850.62 306.36 544.26 945 0.11 852.73 307.97 544.76 950 0.11 854.81 309.58 545.23 955 0.11 856.86 311.19 545.68 960 0.11 858.89 312.80 546.10 965 0.11 860.89 314.40 546.49 970 0.11 862.87 316.01 546.86 975 0.11 864.82 317.62 547.20 980 0.11 866.75 319.23 547.52 985 0.11 868.65 320.84 547.81 990 0.11 870.53 322.45 548.08 995 0.11 872.38 324.06 548.32 1000 0.11 874.20 325.67 548.54 1005 0.11 876.00 327.28 548.73 1010 0.11 877.78 328.89 548.89 1015 0.11 879.52 330.49 549.03 1020 0.11 881.24 332.10 549.14 1025 0.11 882.94 333.71 549.23 1030 0.11 884.61 335.32 549.29 1035 0.11 886.26 336.93 549.33 1040 0.11 887.88 338.54 549.34 1045 0.11 889.47 340.15 549.32 1050 0.11 891.04 341.76 549.28 1055 0.11 892.58 343.37 549.22 1060 0.11 894.10 344.98 549.12 1065 0.10 895.59 346.59 549.01 1070 0.10 897.06 348.19 548.86 1075 0.10 898.50 349.80 548.69 1080 0.10 899.91 351.41 548.50 1085 0.10 901.30 353.02 548.28 1090 0.10 902.67 354.63 548.04 1095 0.10 904.00 356.24 547.76 1100 0.10 905.32 357.85 547.47 1105 0.10 906.60 359.46 547.15 1110 0.10 907.86 361.07 546.80 1115 0.10 909.10 362.68 546.43 1120 0.10 910.31 364.28 546.03 1125 0.10 911.50 365.89 545.60 1130 0.10 912.65 367.50 545.15 1135 0.10 913.79 369.11 544.68 1140 0.10 914.90 370.72 544.17 1145 0.10 915.98 372.33 543.65 1150 0.10 917.03 373.94 543.10 1155 0.10 918.07 375.55 542.52 1160 0.10 919.07 377.16 541.91 1165 0.10 920.05 378.77 541.28 1170 0.10 921.00 380.37 540.63 1175 0.10 921.93 381.98 539.95 1180 0.10 922.84 383.59 539.24 1185 0.10 923.71 385.20 538.51 1190 0.10 924.57 386.81 537.75 1195 0.10 925.39 388.42 536.97 1200 0.10 926.19 390.03 536.16 1205 0.10 926.97 391.64 535.33 1210 0.10 927.72 393.25 534.47 1215 0.10 928.44 394.86 533.58 1220 0.10 929.14 396.46 532.67 1225 0.09 929.81 398.07 531.74 1230 0.09 930.46 399.68 530.78 1235 0.09 931.08 401.29 529.79 1240 0.09 931.68 402.90 528.78 1245 0.09 932.25 404.51 527.74 1250 0.09 932.79 406.12 526.67 1255 0.09 933.31 407.73 525.58 1260 0.09 933.80 409.34 524.47 1265 0.09 934.27 410.95 523.33 1270 0.09 934.71 412.56 522.16 1275 0.09 935.13 414.16 520.97 1280 0.09 935.52 415.77 519.75 1285 0.09 935.89 417.38 518.51 1290 0.09 936.23 418.99 517.24 1295 0.09 936.54 420.60 515.94 1300 0.09 936.83 422.21 514.62 1305 0.09 937.09 423.82 513.28 1310 0.09 937.33 425.43 511.90 1315 0.09 937.54 427.04 510.51 1320 0.09 937.73 428.65 509.08 1325 0.09 937.89 430.25 507.64 1330 0.09 938.03 431.86 506.16 1335 0.09 938.14 433.47 504.66 1340 0.09 938.22 435.08 503.14 1345 0.09 938.28 436.69 501.59 1350 0.09 938.31 438.30 500.01 1355 0.09 938.32 439.91 498.41 1360 0.09 938.30 441.52 496.78 1365 0.09 938.26 443.13 495.13 1370 0.09 938.19 444.74 493.45 1375 0.09 938.09 446.34 491.75 1380 0.08 937.97 447.95 490.02 1385 0.08 937.82 449.56 488.26 1390 0.08 937.65 451.17 486.48 1395 0.08 937.45 452.78 484.67 1400 0.08 937.23 454.39 482.84 1405 0.08 936.98 456.00 480.98 1410 0.08 936.71 457.61 479.10 1415 0.08 936.41 459.22 477.19 1420 0.08 936.08 460.83 475.26 1425 0.08 935.73 462.44 473.30 1430 0.08 935.36 464.04 471.31 1435 0.08 934.95 465.65 469.30 1440 0.08 934.52 467.26 467.26 Maximum Difference 549.34 25 Year Storage Calculations ‐ Basin 9 (Developed) Rainfall Duration  (minutes) Intensity (inches/Hour)      EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference  ft3 EQ 5‐4 C 0.483  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 25907.00 ft2 5 4.67 406.14 6.99 399.16 Tc 5 Minutes 10 3.41 593.13 10.48 582.65 Qa 0.023 ft3 15 2.78 725.32 13.97 711.35 P24(25)0.952 20 2.42 841.86 17.47 824.39 25 2.06 895.78 20.96 874.82 30 1.70 887.08 24.45 862.63 35 1.58 959.03 27.94 931.09 40 1.45 1009.30 31.44 977.86 45 1.33 1037.88 34.93 1002.95 50 1.20 1044.77 38.42 1006.35 55 1.08 1029.98 41.92 988.07 60 0.95 993.53 45.41 948.12 65 0.92 1036.19 48.90 987.28 70 0.88 1072.67 52.40 1020.27 75 0.85 1102.98 55.89 1047.09 80 0.81 1127.11 59.38 1067.73 85 0.77 1145.07 62.88 1082.20 90 0.74 1156.86 66.37 1090.49 95 0.70 1162.47 69.86 1092.60 100 0.67 1161.90 73.36 1088.55 105 0.63 1155.16 76.85 1078.31 110 0.60 1142.25 80.34 1061.90 115 0.56 1123.16 83.83 1039.32 120 0.53 1097.89 87.33 1010.56 125 0.51 1113.74 90.82 1022.92 130 0.50 1127.20 94.31 1032.89 135 0.48 1138.27 97.81 1040.46 140 0.47 1146.94 101.30 1045.64 145 0.46 1153.23 104.79 1048.43 150 0.44 1157.12 108.29 1048.83 155 0.43 1158.62 111.78 1046.84 160 0.42 1157.73 115.27 1042.45 165 0.40 1154.44 118.77 1035.68 170 0.39 1148.77 122.26 1026.51 175 0.37 1140.70 125.75 1014.95 180 0.36 1130.24 129.25 1001.00 185 0.36 1147.43 132.74 1014.69 190 0.35 1163.84 136.23 1027.61 195 0.35 1179.49 139.72 1039.77 200 0.34 1194.37 143.22 1051.15 205 0.34 1208.48 146.71 1061.77 210 0.33 1221.82 150.20 1071.62 215 0.33 1234.40 153.70 1080.70 220 0.33 1246.20 157.19 1089.01 225 0.32 1257.24 160.68 1096.56 230 0.32 1267.51 164.18 1103.33 235 0.31 1277.01 167.67 1109.34 240 0.31 1285.74 171.16 1114.58 245 0.30 1293.71 174.66 1119.05 250 0.30 1300.90 178.15 1122.76 255 0.29 1307.33 181.64 1125.69 260 0.29 1312.99 185.14 1127.86 265 0.29 1317.88 188.63 1129.26 270 0.28 1322.01 192.12 1129.89 275 0.28 1325.36 195.61 1129.75 280 0.27 1327.95 199.11 1128.84 285 0.27 1329.77 202.60 1127.17 290 0.26 1330.82 206.09 1124.73 295 0.26 1331.10 209.59 1121.52 300 0.25 1330.62 213.08 1117.54 305 0.25 1329.36 216.57 1112.79 310 0.25 1327.34 220.07 1107.27 315 0.24 1324.55 223.56 1100.99 320 0.24 1320.99 227.05 1093.94 325 0.23 1316.66 230.55 1086.12 330 0.23 1311.57 234.04 1077.53 335 0.22 1305.71 237.53 1068.17 340 0.22 1299.07 241.03 1058.05 345 0.22 1291.67 244.52 1047.16 350 0.21 1283.51 248.01 1035.49 355 0.21 1274.57 251.50 1023.06 360 0.20 1264.87 255.00 1009.87 365 0.20 1275.83 258.49 1017.34 370 0.20 1286.60 261.98 1024.62 375 0.20 1297.19 265.48 1031.71 380 0.20 1307.60 268.97 1038.63 385 0.20 1317.83 272.46 1045.37 390 0.20 1327.88 275.96 1051.92 395 0.19 1337.75 279.45 1058.30 400 0.19 1347.43 282.94 1064.49 405 0.19 1356.94 286.44 1070.50 410 0.19 1366.26 289.93 1076.33 415 0.19 1375.41 293.42 1081.98 420 0.19 1384.37 296.92 1087.45 425 0.19 1393.15 300.41 1092.74 430 0.19 1401.75 303.90 1097.84 435 0.19 1410.16 307.39 1102.77 440 0.19 1418.40 310.89 1107.51 445 0.18 1426.46 314.38 1112.08 450 0.18 1434.33 317.87 1116.46 455 0.18 1442.02 321.37 1120.66 460 0.18 1449.54 324.86 1124.68 465 0.18 1456.87 328.35 1128.51 470 0.18 1464.02 331.85 1132.17 475 0.18 1470.98 335.34 1135.64 480 0.18 1477.77 338.83 1138.94 485 0.18 1484.38 342.33 1142.05 490 0.17 1490.80 345.82 1144.98 495 0.17 1497.05 349.31 1147.73 500 0.17 1503.11 352.81 1150.30 505 0.17 1508.99 356.30 1152.69 510 0.17 1514.69 359.79 1154.90 515 0.17 1520.21 363.28 1156.92 520 0.17 1525.55 366.78 1158.77 525 0.17 1530.70 370.27 1160.43 530 0.17 1535.68 373.76 1161.91 535 0.17 1540.47 377.26 1163.21 540 0.16 1545.08 380.75 1164.33 545 0.16 1549.52 384.24 1165.27 550 0.16 1553.77 387.74 1166.03 555 0.16 1557.84 391.23 1166.61 560 0.16 1561.72 394.72 1167.00 565 0.16 1565.43 398.22 1167.22 570 0.16 1568.96 401.71 1167.25 575 0.16 1572.30 405.20 1167.10 580 0.16 1575.47 408.70 1166.77 585 0.16 1578.45 412.19 1166.26 590 0.15 1581.25 415.68 1165.57 595 0.15 1583.87 419.17 1164.69 600 0.15 1586.31 422.67 1163.64 605 0.15 1588.56 426.16 1162.40 610 0.15 1590.64 429.65 1160.99 615 0.15 1592.54 433.15 1159.39 620 0.15 1594.25 436.64 1157.61 625 0.15 1595.78 440.13 1155.65 630 0.15 1597.13 443.63 1153.51 635 0.14 1598.30 447.12 1151.19 640 0.14 1599.29 450.61 1148.68 645 0.14 1600.10 454.11 1146.00 650 0.14 1600.73 457.60 1143.13 655 0.14 1601.17 461.09 1140.08 660 0.14 1601.44 464.59 1136.85 665 0.14 1601.52 468.08 1133.44 670 0.14 1601.42 471.57 1129.85 675 0.14 1601.15 475.06 1126.08 680 0.14 1600.68 478.56 1122.13 685 0.13 1600.04 482.05 1117.99 690 0.13 1599.22 485.54 1113.68 695 0.13 1598.22 489.04 1109.18 700 0.13 1597.03 492.53 1104.50 705 0.13 1595.67 496.02 1099.64 710 0.13 1594.12 499.52 1094.60 715 0.13 1592.39 503.01 1089.38 720 0.13 1590.48 506.50 1083.98 725 0.13 1597.50 510.00 1087.50 730 0.13 1604.46 513.49 1090.97 735 0.13 1611.37 516.98 1094.38 740 0.13 1618.22 520.48 1097.74 745 0.13 1625.01 523.97 1101.04 750 0.13 1631.75 527.46 1104.29 755 0.12 1638.43 530.95 1107.48 760 0.12 1645.06 534.45 1110.61 765 0.12 1651.63 537.94 1113.69 770 0.12 1658.15 541.43 1116.72 775 0.12 1664.61 544.93 1119.68 780 0.12 1671.02 548.42 1122.60 785 0.12 1677.37 551.91 1125.45 790 0.12 1683.66 555.41 1128.25 795 0.12 1689.90 558.90 1131.00 800 0.12 1696.08 562.39 1133.69 805 0.12 1702.21 565.89 1136.32 810 0.12 1708.28 569.38 1138.90 815 0.12 1714.30 572.87 1141.43 820 0.12 1720.26 576.37 1143.89 825 0.12 1726.17 579.86 1146.31 830 0.12 1732.02 583.35 1148.66 835 0.12 1737.81 586.84 1150.96 840 0.12 1743.55 590.34 1153.21 845 0.12 1749.23 593.83 1155.40 850 0.12 1754.86 597.32 1157.54 855 0.12 1760.43 600.82 1159.61 860 0.12 1765.95 604.31 1161.64 865 0.12 1771.41 607.80 1163.61 870 0.12 1776.81 611.30 1165.52 875 0.12 1782.16 614.79 1167.37 880 0.12 1787.46 618.28 1169.18 885 0.12 1792.70 621.78 1170.92 890 0.12 1797.88 625.27 1172.61 895 0.12 1803.01 628.76 1174.25 900 0.12 1808.08 632.26 1175.82 905 0.12 1813.10 635.75 1177.35 910 0.11 1818.06 639.24 1178.81 915 0.11 1822.96 642.73 1180.23 920 0.11 1827.81 646.23 1181.58 925 0.11 1832.61 649.72 1182.88 930 0.11 1837.34 653.21 1184.13 935 0.11 1842.03 656.71 1185.32 940 0.11 1846.65 660.20 1186.45 945 0.11 1851.23 663.69 1187.53 950 0.11 1855.74 667.19 1188.56 955 0.11 1860.20 670.68 1189.52 960 0.11 1864.61 674.17 1190.44 965 0.11 1868.96 677.67 1191.29 970 0.11 1873.25 681.16 1192.09 975 0.11 1877.49 684.65 1192.84 980 0.11 1881.67 688.15 1193.53 985 0.11 1885.80 691.64 1194.16 990 0.11 1889.87 695.13 1194.74 995 0.11 1893.89 698.62 1195.27 1000 0.11 1897.85 702.12 1195.73 1005 0.11 1901.76 705.61 1196.14 1010 0.11 1905.60 709.10 1196.50 1015 0.11 1909.40 712.60 1196.80 1020 0.11 1913.14 716.09 1197.05 1025 0.11 1916.82 719.58 1197.24 1030 0.11 1920.45 723.08 1197.37 1035 0.11 1924.02 726.57 1197.45 1040 0.11 1927.54 730.06 1197.47 1045 0.11 1931.00 733.56 1197.44 1050 0.11 1934.40 737.05 1197.35 1055 0.11 1937.75 740.54 1197.21 1060 0.11 1941.04 744.03 1197.01 1065 0.10 1944.28 747.53 1196.76 1070 0.10 1947.47 751.02 1196.44 1075 0.10 1950.59 754.51 1196.08 1080 0.10 1953.66 758.01 1195.66 1085 0.10 1956.68 761.50 1195.18 1090 0.10 1959.64 764.99 1194.65 1095 0.10 1962.55 768.49 1194.06 1100 0.10 1965.40 771.98 1193.42 1105 0.10 1968.19 775.47 1192.72 1110 0.10 1970.93 778.97 1191.96 1115 0.10 1973.61 782.46 1191.15 1120 0.10 1976.24 785.95 1190.29 1125 0.10 1978.81 789.45 1189.36 1130 0.10 1981.33 792.94 1188.39 1135 0.10 1983.79 796.43 1187.35 1140 0.10 1986.19 799.92 1186.27 1145 0.10 1988.54 803.42 1185.12 1150 0.10 1990.83 806.91 1183.92 1155 0.10 1993.07 810.40 1182.67 1160 0.10 1995.26 813.90 1181.36 1165 0.10 1997.38 817.39 1179.99 1170 0.10 1999.45 820.88 1178.57 1175 0.10 2001.47 824.38 1177.09 1180 0.10 2003.43 827.87 1175.56 1185 0.10 2005.34 831.36 1173.97 1190 0.10 2007.18 834.86 1172.33 1195 0.10 2008.98 838.35 1170.63 1200 0.10 2010.72 841.84 1168.87 1205 0.10 2012.40 845.34 1167.06 1210 0.10 2014.03 848.83 1165.20 1215 0.10 2015.60 852.32 1163.28 1220 0.10 2017.11 855.81 1161.30 1225 0.09 2018.57 859.31 1159.27 1230 0.09 2019.98 862.80 1157.18 1235 0.09 2021.33 866.29 1155.03 1240 0.09 2022.62 869.79 1152.83 1245 0.09 2023.86 873.28 1150.58 1250 0.09 2025.04 876.77 1148.27 1255 0.09 2026.17 880.27 1145.90 1260 0.09 2027.24 883.76 1143.48 1265 0.09 2028.26 887.25 1141.00 1270 0.09 2029.22 890.75 1138.47 1275 0.09 2030.12 894.24 1135.88 1280 0.09 2030.97 897.73 1133.24 1285 0.09 2031.76 901.23 1130.54 1290 0.09 2032.50 904.72 1127.78 1295 0.09 2033.19 908.21 1124.97 1300 0.09 2033.81 911.70 1122.11 1305 0.09 2034.38 915.20 1119.19 1310 0.09 2034.90 918.69 1116.21 1315 0.09 2035.36 922.18 1113.18 1320 0.09 2035.76 925.68 1110.09 1325 0.09 2036.11 929.17 1106.94 1330 0.09 2036.41 932.66 1103.74 1335 0.09 2036.64 936.16 1100.49 1340 0.09 2036.83 939.65 1097.18 1345 0.09 2036.95 943.14 1093.81 1350 0.09 2037.03 946.64 1090.39 1355 0.09 2037.04 950.13 1086.91 1360 0.09 2037.00 953.62 1083.38 1365 0.09 2036.91 957.12 1079.79 1370 0.09 2036.75 960.61 1076.15 1375 0.09 2036.55 964.10 1072.45 1380 0.08 2036.29 967.59 1068.69 1385 0.08 2035.97 971.09 1064.88 1390 0.08 2035.60 974.58 1061.01 1395 0.08 2035.17 978.07 1057.09 1400 0.08 2034.68 981.57 1053.11 1405 0.08 2034.14 985.06 1049.08 1410 0.08 2033.55 988.55 1044.99 1415 0.08 2032.90 992.05 1040.85 1420 0.08 2032.19 995.54 1036.65 1425 0.08 2031.43 999.03 1032.39 1430 0.08 2030.61 1002.53 1028.08 1435 0.08 2029.74 1006.02 1023.72 1440 0.08 2028.81 1009.51 1019.29 Maximum Difference 1197.47 25 Year Storage Calculations ‐ Basin 9 (Pre) Rainfall Duration  (minutes) Intensity (inches/Hour)       EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference ft3  EQ 5‐4 C 0.370  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 25907.00 ft2 5 4.67 310.87 5.35 305.52 Tc 5 Minutes 10 3.41 453.98 8.02 445.96 Qa 0.018 ft3 15 2.78 555.17 10.69 544.47 P24(25)0.952 20 2.42 644.36 13.37 631.00 25 2.06 685.64 16.04 669.59 30 1.70 678.98 18.72 660.26 35 1.58 734.05 21.39 712.66 40 1.45 772.52 24.06 748.46 45 1.33 794.40 26.74 767.66 50 1.20 799.68 29.41 770.27 55 1.08 788.36 32.08 756.27 60 0.95 760.46 34.76 725.70 65 0.92 793.11 37.43 755.68 Storage Volume 280.92 70 0.88 821.03 40.10 780.93 75 0.85 844.23 42.78 801.45 80 0.81 862.70 45.45 817.25 85 0.77 876.45 48.13 828.32 90 0.74 885.47 50.80 834.67 95 0.70 889.76 53.47 836.29 100 0.67 889.33 56.15 833.18 105 0.63 884.17 58.82 825.35 110 0.60 874.29 61.49 812.79 115 0.56 859.67 64.17 795.51 120 0.53 840.34 66.84 773.50 125 0.51 852.47 69.52 782.95 130 0.50 862.77 72.19 790.58 135 0.48 871.24 74.86 796.38 140 0.47 877.88 77.54 800.34 145 0.46 882.69 80.21 802.48 150 0.44 885.67 82.88 802.78 155 0.43 886.82 85.56 801.26 160 0.42 886.13 88.23 797.90 165 0.40 883.62 90.90 792.72 170 0.39 879.28 93.58 785.70 175 0.37 873.10 96.25 776.85 180 0.36 865.10 98.93 766.17 185 0.36 878.25 101.60 776.65 190 0.35 890.82 104.27 786.54 195 0.35 902.79 106.95 795.85 200 0.34 914.18 109.62 804.56 205 0.34 924.98 112.29 812.69 210 0.33 935.19 114.97 820.23 215 0.33 944.82 117.64 827.18 220 0.33 953.85 120.31 833.54 225 0.32 962.30 122.99 839.31 230 0.32 970.16 125.66 844.50 235 0.31 977.44 128.34 849.10 240 0.31 984.12 131.01 853.11 245 0.30 990.22 133.68 856.53 250 0.30 995.72 136.36 859.37 255 0.29 1000.64 139.03 861.61 260 0.29 1004.98 141.70 863.27 265 0.29 1008.72 144.38 864.34 270 0.28 1011.88 147.05 864.83 275 0.28 1014.44 149.73 864.72 280 0.27 1016.43 152.40 864.03 285 0.27 1017.82 155.07 862.74 290 0.26 1018.62 157.75 860.88 295 0.26 1018.84 160.42 858.42 300 0.25 1018.47 163.09 855.37 305 0.25 1017.51 165.77 851.74 310 0.25 1015.96 168.44 847.52 315 0.24 1013.82 171.11 842.71 320 0.24 1011.10 173.79 837.31 325 0.23 1007.79 176.46 831.32 330 0.23 1003.89 179.14 824.75 335 0.22 999.40 181.81 817.59 340 0.22 994.32 184.48 809.84 345 0.22 988.66 187.16 801.50 350 0.21 982.41 189.83 792.58 355 0.21 975.57 192.50 783.06 360 0.20 968.14 195.18 772.97 365 0.20 976.53 197.85 778.68 370 0.20 984.78 200.52 784.25 375 0.20 992.88 203.20 789.68 380 0.20 1000.85 205.87 794.98 385 0.20 1008.68 208.55 800.13 390 0.20 1016.37 211.22 805.15 395 0.19 1023.92 213.89 810.03 400 0.19 1031.34 216.57 814.77 405 0.19 1038.61 219.24 819.37 410 0.19 1045.75 221.91 823.84 415 0.19 1052.75 224.59 828.16 420 0.19 1059.61 227.26 832.35 425 0.19 1066.33 229.94 836.39 430 0.19 1072.91 232.61 840.30 435 0.19 1079.35 235.28 844.07 440 0.19 1085.66 237.96 847.70 445 0.18 1091.82 240.63 851.19 450 0.18 1097.85 243.30 854.55 455 0.18 1103.74 245.98 857.76 460 0.18 1109.49 248.65 860.84 465 0.18 1115.10 251.32 863.77 470 0.18 1120.57 254.00 866.57 475 0.18 1125.90 256.67 869.23 480 0.18 1131.10 259.35 871.75 485 0.18 1136.16 262.02 874.14 490 0.17 1141.07 264.69 876.38 495 0.17 1145.85 267.37 878.49 500 0.17 1150.49 270.04 880.45 505 0.17 1154.99 272.71 882.28 510 0.17 1159.36 275.39 883.97 515 0.17 1163.58 278.06 885.52 520 0.17 1167.67 280.73 886.93 525 0.17 1171.61 283.41 888.20 530 0.17 1175.42 286.08 889.34 535 0.17 1179.09 288.76 890.33 540 0.16 1182.62 291.43 891.19 545 0.16 1186.01 294.10 891.91 550 0.16 1189.27 296.78 892.49 555 0.16 1192.38 299.45 892.93 560 0.16 1195.36 302.12 893.23 565 0.16 1198.19 304.80 893.40 570 0.16 1200.89 307.47 893.42 575 0.16 1203.45 310.15 893.31 580 0.16 1205.87 312.82 893.06 585 0.16 1208.16 315.49 892.66 590 0.15 1210.30 318.17 892.14 595 0.15 1212.31 320.84 891.47 600 0.15 1214.17 323.51 890.66 605 0.15 1215.90 326.19 889.71 610 0.15 1217.49 328.86 888.63 615 0.15 1218.94 331.53 887.41 620 0.15 1220.25 334.21 886.04 625 0.15 1221.43 336.88 884.54 630 0.15 1222.46 339.56 882.91 635 0.14 1223.36 342.23 881.13 640 0.14 1224.11 344.90 879.21 645 0.14 1224.73 347.58 877.16 650 0.14 1225.21 350.25 874.96 655 0.14 1225.55 352.92 872.63 660 0.14 1225.76 355.60 870.16 665 0.14 1225.82 358.27 867.55 670 0.14 1225.74 360.94 864.80 675 0.14 1225.53 363.62 861.91 680 0.14 1225.18 366.29 858.89 685 0.13 1224.69 368.97 855.72 690 0.13 1224.06 371.64 852.42 695 0.13 1223.29 374.31 848.98 700 0.13 1222.38 376.99 845.40 705 0.13 1221.34 379.66 841.68 710 0.13 1220.15 382.33 837.82 715 0.13 1218.83 385.01 833.82 720 0.13 1217.37 387.68 829.69 725 0.13 1222.74 390.36 832.39 730 0.13 1228.07 393.03 835.04 735 0.13 1233.35 395.70 837.65 740 0.13 1238.60 398.38 840.22 745 0.13 1243.80 401.05 842.75 750 0.13 1248.96 403.72 845.23 755 0.12 1254.07 406.40 847.67 760 0.12 1259.14 409.07 850.07 765 0.12 1264.17 411.74 852.43 770 0.12 1269.16 414.42 854.74 775 0.12 1274.11 417.09 857.02 780 0.12 1279.01 419.77 859.24 785 0.12 1283.87 422.44 861.43 790 0.12 1288.69 425.11 863.58 795 0.12 1293.46 427.79 865.68 800 0.12 1298.20 430.46 867.74 805 0.12 1302.89 433.13 869.75 810 0.12 1307.53 435.81 871.73 815 0.12 1312.14 438.48 873.66 820 0.12 1316.70 441.15 875.55 825 0.12 1321.22 443.83 877.39 830 0.12 1325.70 446.50 879.20 835 0.12 1330.13 449.18 880.96 840 0.12 1334.53 451.85 882.68 845 0.12 1338.88 454.52 884.35 850 0.12 1343.18 457.20 885.99 855 0.12 1347.45 459.87 887.58 860 0.12 1351.67 462.54 889.13 865 0.12 1355.85 465.22 890.63 870 0.12 1359.99 467.89 892.10 875 0.12 1364.08 470.57 893.52 880 0.12 1368.14 473.24 894.90 885 0.12 1372.15 475.91 896.23 890 0.12 1376.11 478.59 897.53 895 0.12 1380.04 481.26 898.78 900 0.12 1383.92 483.93 899.99 905 0.12 1387.76 486.61 901.15 910 0.11 1391.56 489.28 902.28 915 0.11 1395.31 491.95 903.36 920 0.11 1399.02 494.63 904.39 925 0.11 1402.69 497.30 905.39 930 0.11 1406.32 499.98 906.34 935 0.11 1409.90 502.65 907.25 940 0.11 1413.45 505.32 908.12 945 0.11 1416.95 508.00 908.95 950 0.11 1420.40 510.67 909.73 955 0.11 1423.82 513.34 910.47 960 0.11 1427.19 516.02 911.17 965 0.11 1430.52 518.69 911.83 970 0.11 1433.80 521.36 912.44 975 0.11 1437.05 524.04 913.01 980 0.11 1440.25 526.71 913.54 985 0.11 1443.41 529.39 914.02 990 0.11 1446.53 532.06 914.47 995 0.11 1449.60 534.73 914.87 1000 0.11 1452.63 537.41 915.22 1005 0.11 1455.62 540.08 915.54 1010 0.11 1458.57 542.75 915.81 1015 0.11 1461.47 545.43 916.04 1020 0.11 1464.33 548.10 916.23 1025 0.11 1467.15 550.78 916.38 1030 0.11 1469.93 553.45 916.48 1035 0.11 1472.66 556.12 916.54 1040 0.11 1475.35 558.80 916.56 1045 0.11 1478.00 561.47 916.53 1050 0.11 1480.61 564.14 916.46 1055 0.11 1483.17 566.82 916.35 1060 0.11 1485.69 569.49 916.20 1065 0.10 1488.17 572.16 916.01 1070 0.10 1490.61 574.84 915.77 1075 0.10 1493.00 577.51 915.49 1080 0.10 1495.35 580.19 915.17 1085 0.10 1497.66 582.86 914.80 1090 0.10 1499.93 585.53 914.39 1095 0.10 1502.15 588.21 913.94 1100 0.10 1504.33 590.88 913.45 1105 0.10 1506.47 593.55 912.92 1110 0.10 1508.57 596.23 912.34 1115 0.10 1510.62 598.90 911.72 1120 0.10 1512.63 601.57 911.06 1125 0.10 1514.60 604.25 910.35 1130 0.10 1516.52 606.92 909.60 1135 0.10 1518.41 609.60 908.81 1140 0.10 1520.25 612.27 907.98 1145 0.10 1522.05 614.94 907.10 1150 0.10 1523.80 617.62 906.19 1155 0.10 1525.52 620.29 905.22 1160 0.10 1527.19 622.96 904.22 1165 0.10 1528.81 625.64 903.18 1170 0.10 1530.40 628.31 902.09 1175 0.10 1531.94 630.99 900.96 1180 0.10 1533.44 633.66 899.78 1185 0.10 1534.90 636.33 898.57 1190 0.10 1536.32 639.01 897.31 1195 0.10 1537.69 641.68 896.01 1200 0.10 1539.02 644.35 894.67 1205 0.10 1540.31 647.03 893.28 1210 0.10 1541.55 649.70 891.85 1215 0.10 1542.76 652.37 890.38 1220 0.10 1543.92 655.05 888.87 1225 0.09 1545.03 657.72 887.31 1230 0.09 1546.11 660.40 885.71 1235 0.09 1547.14 663.07 884.07 1240 0.09 1548.13 665.74 882.39 1245 0.09 1549.08 668.42 880.66 1250 0.09 1549.99 671.09 878.90 1255 0.09 1550.85 673.76 877.08 1260 0.09 1551.67 676.44 875.23 1265 0.09 1552.45 679.11 873.33 1270 0.09 1553.18 681.78 871.40 1275 0.09 1553.87 684.46 869.41 1280 0.09 1554.52 687.13 867.39 1285 0.09 1555.13 689.81 865.32 1290 0.09 1555.70 692.48 863.22 1295 0.09 1556.22 695.15 861.06 1300 0.09 1556.70 697.83 858.87 1305 0.09 1557.14 700.50 856.63 1310 0.09 1557.53 703.17 854.36 1315 0.09 1557.88 705.85 852.03 1320 0.09 1558.19 708.52 849.67 1325 0.09 1558.46 711.20 847.26 1330 0.09 1558.68 713.87 844.81 1335 0.09 1558.87 716.54 842.32 1340 0.09 1559.01 719.22 839.79 1345 0.09 1559.10 721.89 837.21 1350 0.09 1559.16 724.56 834.59 1355 0.09 1559.17 727.24 831.93 1360 0.09 1559.14 729.91 829.23 1365 0.09 1559.07 732.58 826.48 1370 0.09 1558.95 735.26 823.69 1375 0.09 1558.79 737.93 820.86 1380 0.08 1558.59 740.61 817.99 1385 0.08 1558.35 743.28 815.07 1390 0.08 1558.06 745.95 812.11 1395 0.08 1557.73 748.63 809.11 1400 0.08 1557.36 751.30 806.06 1405 0.08 1556.95 753.97 802.98 1410 0.08 1556.49 756.65 799.85 1415 0.08 1556.00 759.32 796.67 1420 0.08 1555.46 761.99 793.46 1425 0.08 1554.87 764.67 790.20 1430 0.08 1554.25 767.34 786.90 1435 0.08 1553.58 770.02 783.56 1440 0.08 1552.87 772.69 780.18 Maximum Difference 916.56 25 Year Storage Calculations ‐ Basin 11 (Developed) Rainfall Duration  (minutes) Intensity (inches/Hour)      EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference  ft3 EQ 5‐4 C 0.701  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 4371.00 ft2 5 4.67 99.43 1.71 97.72 Tc 5 Minutes 10 3.41 145.21 2.57 142.65 Qa 0.006 ft3 15 2.78 177.58 3.42 174.16 P24(25)0.952 20 2.42 206.11 4.28 201.83 25 2.06 219.31 5.13 214.18 30 1.70 217.18 5.99 211.19 35 1.58 234.79 6.84 227.95 40 1.45 247.10 7.70 239.40 45 1.33 254.10 8.55 245.55 50 1.20 255.79 9.41 246.38 55 1.08 252.17 10.26 241.90 60 0.95 243.24 11.12 232.12 65 0.92 253.68 11.97 241.71 70 0.88 262.62 12.83 249.79 75 0.85 270.04 13.68 256.35 80 0.81 275.95 14.54 261.41 85 0.77 280.34 15.39 264.95 90 0.74 283.23 16.25 266.98 95 0.70 284.60 17.10 267.50 100 0.67 284.46 17.96 266.50 105 0.63 282.81 18.81 264.00 110 0.60 279.65 19.67 259.98 115 0.56 274.98 20.52 254.45 120 0.53 268.79 21.38 247.41 125 0.51 272.67 22.24 250.44 130 0.50 275.97 23.09 252.88 135 0.48 278.68 23.95 254.73 140 0.47 280.80 24.80 256.00 145 0.46 282.34 25.66 256.68 150 0.44 283.29 26.51 256.78 155 0.43 283.66 27.37 256.29 160 0.42 283.44 28.22 255.22 165 0.40 282.64 29.08 253.56 170 0.39 281.25 29.93 251.32 175 0.37 279.27 30.79 248.49 180 0.36 276.71 31.64 245.07 185 0.36 280.92 32.50 248.42 190 0.35 284.94 33.35 251.59 195 0.35 288.77 34.21 254.56 200 0.34 292.41 35.06 257.35 205 0.34 295.87 35.92 259.95 210 0.33 299.13 36.77 262.36 215 0.33 302.21 37.63 264.58 220 0.33 305.10 38.48 266.62 225 0.32 307.80 39.34 268.46 230 0.32 310.32 40.19 270.12 235 0.31 312.64 41.05 271.59 240 0.31 314.78 41.90 272.88 245 0.30 316.73 42.76 273.97 250 0.30 318.49 43.62 274.88 255 0.29 320.07 44.47 275.60 260 0.29 321.45 45.33 276.13 265 0.29 322.65 46.18 276.47 270 0.28 323.66 47.04 276.62 275 0.28 324.48 47.89 276.59 280 0.27 325.12 48.75 276.37 285 0.27 325.56 49.60 275.96 290 0.26 325.82 50.46 275.36 295 0.26 325.89 51.31 274.58 300 0.25 325.77 52.17 273.60 305 0.25 325.46 53.02 272.44 310 0.25 324.97 53.88 271.09 315 0.24 324.28 54.73 269.55 320 0.24 323.41 55.59 267.82 325 0.23 322.35 56.44 265.91 330 0.23 321.10 57.30 263.81 335 0.22 319.67 58.15 261.52 340 0.22 318.05 59.01 259.04 345 0.22 316.23 59.86 256.37 350 0.21 314.23 60.72 253.51 355 0.21 312.05 61.57 250.47 360 0.20 309.67 62.43 247.24 365 0.20 312.35 63.29 249.07 370 0.20 314.99 64.14 250.85 375 0.20 317.59 65.00 252.59 380 0.20 320.13 65.85 254.28 385 0.20 322.64 66.71 255.93 390 0.20 325.10 67.56 257.54 395 0.19 327.51 68.42 259.10 400 0.19 329.89 69.27 260.61 405 0.19 332.21 70.13 262.09 410 0.19 334.50 70.98 263.51 415 0.19 336.73 71.84 264.90 420 0.19 338.93 72.69 266.24 425 0.19 341.08 73.55 267.53 430 0.19 343.18 74.40 268.78 435 0.19 345.24 75.26 269.99 440 0.19 347.26 76.11 271.15 445 0.18 349.23 76.97 272.26 450 0.18 351.16 77.82 273.34 455 0.18 353.04 78.68 274.36 460 0.18 354.88 79.53 275.35 465 0.18 356.68 80.39 276.29 470 0.18 358.43 81.24 277.18 475 0.18 360.13 82.10 278.03 480 0.18 361.80 82.95 278.84 485 0.18 363.41 83.81 279.60 490 0.17 364.99 84.67 280.32 495 0.17 366.51 85.52 280.99 500 0.17 368.00 86.38 281.62 505 0.17 369.44 87.23 282.21 510 0.17 370.83 88.09 282.75 515 0.17 372.19 88.94 283.24 520 0.17 373.49 89.80 283.70 525 0.17 374.75 90.65 284.10 530 0.17 375.97 91.51 284.47 535 0.17 377.15 92.36 284.78 540 0.16 378.28 93.22 285.06 545 0.16 379.36 94.07 285.29 550 0.16 380.40 94.93 285.47 555 0.16 381.40 95.78 285.61 560 0.16 382.35 96.64 285.71 565 0.16 383.26 97.49 285.76 570 0.16 384.12 98.35 285.77 575 0.16 384.94 99.20 285.74 580 0.16 385.71 100.06 285.65 585 0.16 386.44 100.91 285.53 590 0.15 387.13 101.77 285.36 595 0.15 387.77 102.62 285.15 600 0.15 388.37 103.48 284.89 605 0.15 388.92 104.33 284.59 610 0.15 389.43 105.19 284.24 615 0.15 389.89 106.05 283.85 620 0.15 390.31 106.90 283.41 625 0.15 390.69 107.76 282.93 630 0.15 391.02 108.61 282.41 635 0.14 391.31 109.47 281.84 640 0.14 391.55 110.32 281.23 645 0.14 391.75 111.18 280.57 650 0.14 391.90 112.03 279.87 655 0.14 392.01 112.89 279.12 660 0.14 392.07 113.74 278.33 665 0.14 392.09 114.60 277.50 670 0.14 392.07 115.45 276.62 675 0.14 392.00 116.31 275.69 680 0.14 391.89 117.16 274.72 685 0.13 391.73 118.02 273.71 690 0.13 391.53 118.87 272.66 695 0.13 391.28 119.73 271.56 700 0.13 390.99 120.58 270.41 705 0.13 390.66 121.44 269.22 710 0.13 390.28 122.29 267.99 715 0.13 389.86 123.15 266.71 720 0.13 389.39 124.00 265.39 725 0.13 391.11 124.86 266.25 730 0.13 392.81 125.71 267.10 735 0.13 394.50 126.57 267.93 740 0.13 396.18 127.43 268.75 745 0.13 397.84 128.28 269.56 750 0.13 399.49 129.14 270.36 755 0.12 401.13 129.99 271.14 760 0.12 402.75 130.85 271.91 765 0.12 404.36 131.70 272.66 770 0.12 405.96 132.56 273.40 775 0.12 407.54 133.41 274.13 780 0.12 409.11 134.27 274.84 785 0.12 410.66 135.12 275.54 790 0.12 412.20 135.98 276.22 795 0.12 413.73 136.83 276.90 800 0.12 415.24 137.69 277.56 805 0.12 416.74 138.54 278.20 810 0.12 418.23 139.40 278.83 815 0.12 419.70 140.25 279.45 820 0.12 421.16 141.11 280.05 825 0.12 422.61 141.96 280.64 830 0.12 424.04 142.82 281.22 835 0.12 425.46 143.67 281.79 840 0.12 426.86 144.53 282.33 845 0.12 428.26 145.38 282.87 850 0.12 429.63 146.24 283.39 855 0.12 431.00 147.10 283.90 860 0.12 432.35 147.95 284.40 865 0.12 433.69 148.81 284.88 870 0.12 435.01 149.66 285.35 875 0.12 436.32 150.52 285.80 880 0.12 437.61 151.37 286.24 885 0.12 438.90 152.23 286.67 890 0.12 440.17 153.08 287.08 895 0.12 441.42 153.94 287.48 900 0.12 442.66 154.79 287.87 905 0.12 443.89 155.65 288.24 910 0.11 445.11 156.50 288.60 915 0.11 446.31 157.36 288.95 920 0.11 447.49 158.21 289.28 925 0.11 448.67 159.07 289.60 930 0.11 449.83 159.92 289.90 935 0.11 450.97 160.78 290.20 940 0.11 452.11 161.63 290.47 945 0.11 453.23 162.49 290.74 950 0.11 454.33 163.34 290.99 955 0.11 455.42 164.20 291.23 960 0.11 456.50 165.05 291.45 965 0.11 457.57 165.91 291.66 970 0.11 458.62 166.76 291.85 975 0.11 459.66 167.62 292.04 980 0.11 460.68 168.48 292.21 985 0.11 461.69 169.33 292.36 990 0.11 462.69 170.19 292.50 995 0.11 463.67 171.04 292.63 1000 0.11 464.64 171.90 292.75 1005 0.11 465.60 172.75 292.85 1010 0.11 466.54 173.61 292.93 1015 0.11 467.47 174.46 293.01 1020 0.11 468.38 175.32 293.07 1025 0.11 469.29 176.17 293.11 1030 0.11 470.17 177.03 293.15 1035 0.11 471.05 177.88 293.17 1040 0.11 471.91 178.74 293.17 1045 0.11 472.76 179.59 293.16 1050 0.11 473.59 180.45 293.14 1055 0.11 474.41 181.30 293.11 1060 0.11 475.22 182.16 293.06 1065 0.10 476.01 183.01 293.00 1070 0.10 476.79 183.87 292.92 1075 0.10 477.55 184.72 292.83 1080 0.10 478.31 185.58 292.73 1085 0.10 479.04 186.43 292.61 1090 0.10 479.77 187.29 292.48 1095 0.10 480.48 188.14 292.34 1100 0.10 481.18 189.00 292.18 1105 0.10 481.86 189.86 292.01 1110 0.10 482.53 190.71 291.82 1115 0.10 483.19 191.57 291.62 1120 0.10 483.83 192.42 291.41 1125 0.10 484.46 193.28 291.19 1130 0.10 485.08 194.13 290.95 1135 0.10 485.68 194.99 290.69 1140 0.10 486.27 195.84 290.43 1145 0.10 486.84 196.70 290.15 1150 0.10 487.41 197.55 289.85 1155 0.10 487.95 198.41 289.55 1160 0.10 488.49 199.26 289.23 1165 0.10 489.01 200.12 288.89 1170 0.10 489.52 200.97 288.54 1175 0.10 490.01 201.83 288.18 1180 0.10 490.49 202.68 287.81 1185 0.10 490.96 203.54 287.42 1190 0.10 491.41 204.39 287.02 1195 0.10 491.85 205.25 286.60 1200 0.10 492.27 206.10 286.17 1205 0.10 492.69 206.96 285.73 1210 0.10 493.08 207.81 285.27 1215 0.10 493.47 208.67 284.80 1220 0.10 493.84 209.52 284.32 1225 0.09 494.20 210.38 283.82 1230 0.09 494.54 211.24 283.31 1235 0.09 494.87 212.09 282.78 1240 0.09 495.19 212.95 282.24 1245 0.09 495.49 213.80 281.69 1250 0.09 495.78 214.66 281.13 1255 0.09 496.06 215.51 280.55 1260 0.09 496.32 216.37 279.95 1265 0.09 496.57 217.22 279.35 1270 0.09 496.80 218.08 278.73 1275 0.09 497.02 218.93 278.09 1280 0.09 497.23 219.79 277.45 1285 0.09 497.43 220.64 276.78 1290 0.09 497.61 221.50 276.11 1295 0.09 497.77 222.35 275.42 1300 0.09 497.93 223.21 274.72 1305 0.09 498.07 224.06 274.00 1310 0.09 498.19 224.92 273.28 1315 0.09 498.31 225.77 272.53 1320 0.09 498.41 226.63 271.78 1325 0.09 498.49 227.48 271.01 1330 0.09 498.56 228.34 270.22 1335 0.09 498.62 229.19 269.43 1340 0.09 498.67 230.05 268.62 1345 0.09 498.70 230.91 267.79 1350 0.09 498.71 231.76 266.95 1355 0.09 498.72 232.62 266.10 1360 0.09 498.71 233.47 265.24 1365 0.09 498.69 234.33 264.36 1370 0.09 498.65 235.18 263.47 1375 0.09 498.60 236.04 262.56 1380 0.08 498.53 236.89 261.64 1385 0.08 498.46 237.75 260.71 1390 0.08 498.36 238.60 259.76 1395 0.08 498.26 239.46 258.80 1400 0.08 498.14 240.31 257.83 1405 0.08 498.01 241.17 256.84 1410 0.08 497.86 242.02 255.84 1415 0.08 497.70 242.88 254.83 1420 0.08 497.53 243.73 253.80 1425 0.08 497.34 244.59 252.76 1430 0.08 497.14 245.44 251.70 1435 0.08 496.93 246.30 250.63 1440 0.08 496.70 247.15 249.55 Maximum Difference 293.17 25 Year Storage Calculations ‐ Basin 11 (Pre) Rainfall Duration  (minutes) Intensity (inches/Hour)       EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference ft3  EQ 5‐4 C 0.370  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 4371.00 ft2 5 4.67 52.45 0.90 51.55 Tc 5 Minutes 10 3.41 76.60 1.35 75.24 Qa 0.003 ft3 15 2.78 93.67 1.80 91.86 P24(25)0.952 20 2.42 108.72 2.26 106.46 25 2.06 115.68 2.71 112.97 30 1.70 114.56 3.16 111.40 35 1.58 123.85 3.61 120.24 40 1.45 130.34 4.06 126.28 45 1.33 134.03 4.51 129.52 50 1.20 134.92 4.96 129.96 55 1.08 133.01 5.41 127.60 60 0.95 128.30 5.86 122.44 65 0.92 133.81 6.32 127.50 Storage Volume 138.53 70 0.88 138.52 6.77 131.76 75 0.85 142.44 7.22 135.22 80 0.81 145.55 7.67 137.89 85 0.77 147.87 8.12 139.75 90 0.74 149.40 8.57 140.82 95 0.70 150.12 9.02 141.10 100 0.67 150.05 9.47 140.57 105 0.63 149.18 9.92 139.25 110 0.60 147.51 10.38 137.13 115 0.56 145.04 10.83 134.22 120 0.53 141.78 11.28 130.50 125 0.51 143.83 11.73 132.10 130 0.50 145.57 12.18 133.39 135 0.48 146.99 12.63 134.36 140 0.47 148.11 13.08 135.03 145 0.46 148.93 13.53 135.39 150 0.44 149.43 13.98 135.44 155 0.43 149.62 14.44 135.19 160 0.42 149.51 14.89 134.62 165 0.40 149.08 15.34 133.75 170 0.39 148.35 15.79 132.56 175 0.37 147.31 16.24 131.07 180 0.36 145.96 16.69 129.27 185 0.36 148.18 17.14 131.04 190 0.35 150.30 17.59 132.70 195 0.35 152.32 18.04 134.27 200 0.34 154.24 18.50 135.74 205 0.34 156.06 18.95 137.12 210 0.33 157.78 19.40 138.39 215 0.33 159.41 19.85 139.56 220 0.33 160.93 20.30 140.63 225 0.32 162.36 20.75 141.61 230 0.32 163.68 21.20 142.48 235 0.31 164.91 21.65 143.26 240 0.31 166.04 22.10 143.94 245 0.30 167.07 22.55 144.51 250 0.30 168.00 23.01 144.99 255 0.29 168.83 23.46 145.37 260 0.29 169.56 23.91 145.65 265 0.29 170.19 24.36 145.83 270 0.28 170.72 24.81 145.91 275 0.28 171.16 25.26 145.89 280 0.27 171.49 25.71 145.78 285 0.27 171.72 26.16 145.56 290 0.26 171.86 26.61 145.25 295 0.26 171.90 27.07 144.83 300 0.25 171.83 27.52 144.32 305 0.25 171.67 27.97 143.70 310 0.25 171.41 28.42 142.99 315 0.24 171.05 28.87 142.18 320 0.24 170.59 29.32 141.27 325 0.23 170.03 29.77 140.26 330 0.23 169.37 30.22 139.15 335 0.22 168.62 30.67 137.94 340 0.22 167.76 31.13 136.64 345 0.22 166.81 31.58 135.23 350 0.21 165.75 32.03 133.72 355 0.21 164.60 32.48 132.12 360 0.20 163.34 32.93 130.41 365 0.20 164.76 33.38 131.38 370 0.20 166.15 33.83 132.32 375 0.20 167.52 34.28 133.23 380 0.20 168.86 34.73 134.13 385 0.20 170.18 35.19 135.00 390 0.20 171.48 35.64 135.84 395 0.19 172.76 36.09 136.67 400 0.19 174.01 36.54 137.47 405 0.19 175.23 36.99 138.24 410 0.19 176.44 37.44 139.00 415 0.19 177.62 37.89 139.73 420 0.19 178.78 38.34 140.43 425 0.19 179.91 38.79 141.12 430 0.19 181.02 39.25 141.77 435 0.19 182.11 39.70 142.41 440 0.19 183.17 40.15 143.02 445 0.18 184.21 40.60 143.61 450 0.18 185.23 41.05 144.18 455 0.18 186.22 41.50 144.72 460 0.18 187.19 41.95 145.24 465 0.18 188.14 42.40 145.73 470 0.18 189.06 42.85 146.21 475 0.18 189.96 43.31 146.66 480 0.18 190.84 43.76 147.08 485 0.18 191.69 44.21 147.48 490 0.17 192.52 44.66 147.86 495 0.17 193.33 45.11 148.22 500 0.17 194.11 45.56 148.55 505 0.17 194.87 46.01 148.86 510 0.17 195.61 46.46 149.14 515 0.17 196.32 46.91 149.40 520 0.17 197.01 47.37 149.64 525 0.17 197.67 47.82 149.86 530 0.17 198.32 48.27 150.05 535 0.17 198.93 48.72 150.22 540 0.16 199.53 49.17 150.36 545 0.16 200.10 49.62 150.48 550 0.16 200.65 50.07 150.58 555 0.16 201.18 50.52 150.65 560 0.16 201.68 50.97 150.71 565 0.16 202.16 51.43 150.73 570 0.16 202.61 51.88 150.74 575 0.16 203.05 52.33 150.72 580 0.16 203.45 52.78 150.68 585 0.16 203.84 53.23 150.61 590 0.15 204.20 53.68 150.52 595 0.15 204.54 54.13 150.41 600 0.15 204.85 54.58 150.27 605 0.15 205.15 55.03 150.11 610 0.15 205.41 55.49 149.93 615 0.15 205.66 55.94 149.72 620 0.15 205.88 56.39 149.49 625 0.15 206.08 56.84 149.24 630 0.15 206.25 57.29 148.96 635 0.14 206.40 57.74 148.66 640 0.14 206.53 58.19 148.34 645 0.14 206.64 58.64 147.99 650 0.14 206.72 59.09 147.62 655 0.14 206.77 59.54 147.23 660 0.14 206.81 60.00 146.81 665 0.14 206.82 60.45 146.37 670 0.14 206.81 60.90 145.91 675 0.14 206.77 61.35 145.42 680 0.14 206.71 61.80 144.91 685 0.13 206.63 62.25 144.38 690 0.13 206.52 62.70 143.82 695 0.13 206.39 63.15 143.24 700 0.13 206.24 63.60 142.63 705 0.13 206.06 64.06 142.01 710 0.13 205.86 64.51 141.36 715 0.13 205.64 64.96 140.68 720 0.13 205.39 65.41 139.98 725 0.13 206.30 65.86 140.44 730 0.13 207.20 66.31 140.89 735 0.13 208.09 66.76 141.33 740 0.13 208.97 67.21 141.76 745 0.13 209.85 67.66 142.19 750 0.13 210.72 68.12 142.61 755 0.12 211.59 68.57 143.02 760 0.12 212.44 69.02 143.42 765 0.12 213.29 69.47 143.82 770 0.12 214.13 69.92 144.21 775 0.12 214.97 70.37 144.59 780 0.12 215.79 70.82 144.97 785 0.12 216.61 71.27 145.34 790 0.12 217.43 71.72 145.70 795 0.12 218.23 72.18 146.06 800 0.12 219.03 72.63 146.40 805 0.12 219.82 73.08 146.74 810 0.12 220.61 73.53 147.08 815 0.12 221.38 73.98 147.40 820 0.12 222.15 74.43 147.72 825 0.12 222.92 74.88 148.03 830 0.12 223.67 75.33 148.34 835 0.12 224.42 75.78 148.63 840 0.12 225.16 76.24 148.92 845 0.12 225.89 76.69 149.21 850 0.12 226.62 77.14 149.48 855 0.12 227.34 77.59 149.75 860 0.12 228.05 78.04 150.01 865 0.12 228.76 78.49 150.27 870 0.12 229.46 78.94 150.51 875 0.12 230.15 79.39 150.75 880 0.12 230.83 79.84 150.99 885 0.12 231.51 80.30 151.21 890 0.12 232.18 80.75 151.43 895 0.12 232.84 81.20 151.64 900 0.12 233.49 81.65 151.84 905 0.12 234.14 82.10 152.04 910 0.11 234.78 82.55 152.23 915 0.11 235.42 83.00 152.41 920 0.11 236.04 83.45 152.59 925 0.11 236.66 83.90 152.76 930 0.11 237.27 84.36 152.92 935 0.11 237.88 84.81 153.07 940 0.11 238.47 85.26 153.22 945 0.11 239.07 85.71 153.36 950 0.11 239.65 86.16 153.49 955 0.11 240.22 86.61 153.61 960 0.11 240.79 87.06 153.73 965 0.11 241.36 87.51 153.84 970 0.11 241.91 87.96 153.95 975 0.11 242.46 88.42 154.04 980 0.11 243.00 88.87 154.13 985 0.11 243.53 89.32 154.21 990 0.11 244.06 89.77 154.29 995 0.11 244.57 90.22 154.36 1000 0.11 245.09 90.67 154.42 1005 0.11 245.59 91.12 154.47 1010 0.11 246.09 91.57 154.51 1015 0.11 246.58 92.02 154.55 1020 0.11 247.06 92.48 154.59 1025 0.11 247.54 92.93 154.61 1030 0.11 248.00 93.38 154.63 1035 0.11 248.47 93.83 154.64 1040 0.11 248.92 94.28 154.64 1045 0.11 249.37 94.73 154.64 1050 0.11 249.81 95.18 154.62 1055 0.11 250.24 95.63 154.61 1060 0.11 250.66 96.08 154.58 1065 0.10 251.08 96.53 154.55 1070 0.10 251.49 96.99 154.51 1075 0.10 251.90 97.44 154.46 1080 0.10 252.29 97.89 154.41 1085 0.10 252.68 98.34 154.34 1090 0.10 253.07 98.79 154.28 1095 0.10 253.44 99.24 154.20 1100 0.10 253.81 99.69 154.12 1105 0.10 254.17 100.14 154.03 1110 0.10 254.52 100.59 153.93 1115 0.10 254.87 101.05 153.82 1120 0.10 255.21 101.50 153.71 1125 0.10 255.54 101.95 153.59 1130 0.10 255.87 102.40 153.47 1135 0.10 256.18 102.85 153.33 1140 0.10 256.49 103.30 153.19 1145 0.10 256.80 103.75 153.05 1150 0.10 257.09 104.20 152.89 1155 0.10 257.38 104.65 152.73 1160 0.10 257.67 105.11 152.56 1165 0.10 257.94 105.56 152.38 1170 0.10 258.21 106.01 152.20 1175 0.10 258.47 106.46 152.01 1180 0.10 258.72 106.91 151.81 1185 0.10 258.97 107.36 151.61 1190 0.10 259.21 107.81 151.39 1195 0.10 259.44 108.26 151.17 1200 0.10 259.66 108.71 150.95 1205 0.10 259.88 109.17 150.71 1210 0.10 260.09 109.62 150.47 1215 0.10 260.29 110.07 150.22 1220 0.10 260.49 110.52 149.97 1225 0.09 260.68 110.97 149.71 1230 0.09 260.86 111.42 149.44 1235 0.09 261.03 111.87 149.16 1240 0.09 261.20 112.32 148.88 1245 0.09 261.36 112.77 148.58 1250 0.09 261.51 113.23 148.29 1255 0.09 261.66 113.68 147.98 1260 0.09 261.80 114.13 147.67 1265 0.09 261.93 114.58 147.35 1270 0.09 262.05 115.03 147.02 1275 0.09 262.17 115.48 146.69 1280 0.09 262.28 115.93 146.35 1285 0.09 262.38 116.38 146.00 1290 0.09 262.48 116.83 145.64 1295 0.09 262.56 117.29 145.28 1300 0.09 262.64 117.74 144.91 1305 0.09 262.72 118.19 144.53 1310 0.09 262.78 118.64 144.15 1315 0.09 262.84 119.09 143.75 1320 0.09 262.90 119.54 143.36 1325 0.09 262.94 119.99 142.95 1330 0.09 262.98 120.44 142.54 1335 0.09 263.01 120.89 142.12 1340 0.09 263.03 121.35 141.69 1345 0.09 263.05 121.80 141.25 1350 0.09 263.06 122.25 140.81 1355 0.09 263.06 122.70 140.36 1360 0.09 263.06 123.15 139.91 1365 0.09 263.04 123.60 139.44 1370 0.09 263.02 124.05 138.97 1375 0.09 263.00 124.50 138.49 1380 0.08 262.96 124.95 138.01 1385 0.08 262.92 125.41 137.52 1390 0.08 262.87 125.86 137.02 1395 0.08 262.82 126.31 136.51 1400 0.08 262.76 126.76 136.00 1405 0.08 262.69 127.21 135.48 1410 0.08 262.61 127.66 134.95 1415 0.08 262.53 128.11 134.41 1420 0.08 262.43 128.56 133.87 1425 0.08 262.34 129.01 133.32 1430 0.08 262.23 129.47 132.77 1435 0.08 262.12 129.92 132.20 1440 0.08 262.00 130.37 131.63 Maximum Difference 154.64 25 Year Storage Calculations ‐ Basin 13 (Developed) Rainfall Duration  (minutes) Intensity (inches/Hour)      EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference  ft3 EQ 5‐4 C 0.625  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 6215.00 ft2 5 4.67 125.96 2.17 123.80 Tc 5 Minutes 10 3.41 183.95 3.25 180.70 Qa 0.007 ft3 15 2.78 224.95 4.33 220.62 P24(25)0.952 20 2.42 261.10 5.42 255.68 25 2.06 277.82 6.50 271.32 30 1.70 275.12 7.58 267.54 35 1.58 297.44 8.67 288.77 40 1.45 313.03 9.75 303.28 45 1.33 321.89 10.83 311.06 50 1.20 324.03 11.92 312.11 55 1.08 319.44 13.00 306.44 60 0.95 308.14 14.08 294.05 65 0.92 321.37 15.17 306.20 70 0.88 332.68 16.25 316.43 75 0.85 342.08 17.33 324.75 80 0.81 349.57 18.42 331.15 85 0.77 355.14 19.50 335.64 90 0.74 358.79 20.58 338.21 95 0.70 360.53 21.67 338.87 100 0.67 360.36 22.75 337.61 105 0.63 358.27 23.83 334.43 110 0.60 354.26 24.92 329.34 115 0.56 348.34 26.00 322.34 120 0.53 340.51 27.08 313.42 125 0.51 345.42 28.17 317.25 130 0.50 349.59 29.25 320.34 135 0.48 353.03 30.33 322.69 140 0.47 355.72 31.42 324.30 145 0.46 357.67 32.50 325.17 150 0.44 358.87 33.58 325.29 155 0.43 359.34 34.67 324.67 160 0.42 359.06 35.75 323.31 165 0.40 358.04 36.83 321.21 170 0.39 356.28 37.92 318.37 175 0.37 353.78 39.00 314.78 180 0.36 350.54 40.08 310.45 185 0.36 355.87 41.17 314.70 190 0.35 360.96 42.25 318.71 195 0.35 365.81 43.33 322.48 200 0.34 370.43 44.42 326.01 205 0.34 374.80 45.50 329.30 210 0.33 378.94 46.58 332.36 215 0.33 382.84 47.67 335.17 220 0.33 386.50 48.75 337.75 225 0.32 389.93 49.84 340.09 230 0.32 393.11 50.92 342.19 235 0.31 396.06 52.00 344.06 240 0.31 398.77 53.09 345.68 245 0.30 401.24 54.17 347.07 250 0.30 403.47 55.25 348.22 255 0.29 405.46 56.34 349.13 260 0.29 407.22 57.42 349.80 265 0.29 408.73 58.50 350.23 270 0.28 410.01 59.59 350.43 275 0.28 411.05 60.67 350.39 280 0.27 411.86 61.75 350.10 285 0.27 412.42 62.84 349.58 290 0.26 412.75 63.92 348.83 295 0.26 412.83 65.00 347.83 300 0.25 412.68 66.09 346.60 305 0.25 412.29 67.17 345.13 310 0.25 411.67 68.25 343.41 315 0.24 410.80 69.34 341.47 320 0.24 409.70 70.42 339.28 325 0.23 408.36 71.50 336.85 330 0.23 406.78 72.59 334.19 335 0.22 404.96 73.67 331.29 340 0.22 402.90 74.75 328.15 345 0.22 400.61 75.84 324.77 350 0.21 398.07 76.92 321.15 355 0.21 395.30 78.00 317.30 360 0.20 392.29 79.09 313.21 365 0.20 395.69 80.17 315.52 370 0.20 399.03 81.25 317.78 375 0.20 402.32 82.34 319.98 380 0.20 405.55 83.42 322.13 385 0.20 408.72 84.50 324.22 390 0.20 411.83 85.59 326.25 395 0.19 414.90 86.67 328.23 400 0.19 417.90 87.75 330.15 405 0.19 420.85 88.84 332.01 410 0.19 423.74 89.92 333.82 415 0.19 426.57 91.00 335.57 420 0.19 429.35 92.09 337.27 425 0.19 432.08 93.17 338.91 430 0.19 434.74 94.25 340.49 435 0.19 437.35 95.34 342.02 440 0.19 439.91 96.42 343.49 445 0.18 442.41 97.50 344.90 450 0.18 444.85 98.59 346.26 455 0.18 447.24 99.67 347.57 460 0.18 449.57 100.75 348.81 465 0.18 451.84 101.84 350.00 470 0.18 454.06 102.92 351.14 475 0.18 456.22 104.00 352.21 480 0.18 458.32 105.09 353.24 485 0.18 460.37 106.17 354.20 490 0.17 462.36 107.25 355.11 495 0.17 464.30 108.34 355.96 500 0.17 466.18 109.42 356.76 505 0.17 468.00 110.50 357.50 510 0.17 469.77 111.59 358.18 515 0.17 471.48 112.67 358.81 520 0.17 473.14 113.75 359.39 525 0.17 474.74 114.84 359.90 530 0.17 476.28 115.92 360.36 535 0.17 477.77 117.00 360.76 540 0.16 479.20 118.09 361.11 545 0.16 480.57 119.17 361.40 550 0.16 481.89 120.25 361.64 555 0.16 483.15 121.34 361.82 560 0.16 484.36 122.42 361.94 565 0.16 485.51 123.50 362.01 570 0.16 486.60 124.59 362.02 575 0.16 487.64 125.67 361.97 580 0.16 488.62 126.75 361.87 585 0.16 489.55 127.84 361.71 590 0.15 490.42 128.92 361.49 595 0.15 491.23 130.00 361.22 600 0.15 491.98 131.09 360.90 605 0.15 492.68 132.17 360.51 610 0.15 493.33 133.25 360.07 615 0.15 493.92 134.34 359.58 620 0.15 494.45 135.42 359.03 625 0.15 494.92 136.50 358.42 630 0.15 495.34 137.59 357.75 635 0.14 495.71 138.67 357.03 640 0.14 496.01 139.75 356.26 645 0.14 496.26 140.84 355.42 650 0.14 496.46 141.92 354.54 655 0.14 496.60 143.01 353.59 660 0.14 496.68 144.09 352.59 665 0.14 496.70 145.17 351.53 670 0.14 496.67 146.26 350.42 675 0.14 496.59 147.34 349.25 680 0.14 496.44 148.42 348.02 685 0.13 496.24 149.51 346.74 690 0.13 495.99 150.59 345.40 695 0.13 495.68 151.67 344.01 700 0.13 495.31 152.76 342.55 705 0.13 494.89 153.84 341.05 710 0.13 494.41 154.92 339.48 715 0.13 493.87 156.01 337.87 720 0.13 493.28 157.09 336.19 725 0.13 495.46 158.17 337.28 730 0.13 497.61 159.26 338.36 735 0.13 499.76 160.34 339.42 740 0.13 501.88 161.42 340.46 745 0.13 503.99 162.51 341.48 750 0.13 506.08 163.59 342.49 755 0.12 508.15 164.67 343.48 760 0.12 510.21 165.76 344.45 765 0.12 512.24 166.84 345.41 770 0.12 514.27 167.92 346.34 775 0.12 516.27 169.01 347.26 780 0.12 518.26 170.09 348.17 785 0.12 520.23 171.17 349.05 790 0.12 522.18 172.26 349.92 795 0.12 524.11 173.34 350.77 800 0.12 526.03 174.42 351.61 805 0.12 527.93 175.51 352.42 810 0.12 529.81 176.59 353.22 815 0.12 531.68 177.67 354.01 820 0.12 533.53 178.76 354.77 825 0.12 535.36 179.84 355.52 830 0.12 537.17 180.92 356.25 835 0.12 538.97 182.01 356.97 840 0.12 540.75 183.09 357.66 845 0.12 542.51 184.17 358.34 850 0.12 544.26 185.26 359.00 855 0.12 545.99 186.34 359.65 860 0.12 547.70 187.42 360.28 865 0.12 549.39 188.51 360.89 870 0.12 551.07 189.59 361.48 875 0.12 552.73 190.67 362.05 880 0.12 554.37 191.76 362.61 885 0.12 555.99 192.84 363.15 890 0.12 557.60 193.92 363.68 895 0.12 559.19 195.01 364.19 900 0.12 560.77 196.09 364.68 905 0.12 562.32 197.17 365.15 910 0.11 563.86 198.26 365.60 915 0.11 565.38 199.34 366.04 920 0.11 566.89 200.42 366.46 925 0.11 568.37 201.51 366.86 930 0.11 569.84 202.59 367.25 935 0.11 571.29 203.67 367.62 940 0.11 572.73 204.76 367.97 945 0.11 574.15 205.84 368.31 950 0.11 575.55 206.92 368.62 955 0.11 576.93 208.01 368.92 960 0.11 578.30 209.09 369.21 965 0.11 579.65 210.17 369.47 970 0.11 580.98 211.26 369.72 975 0.11 582.29 212.34 369.95 980 0.11 583.59 213.42 370.17 985 0.11 584.87 214.51 370.36 990 0.11 586.13 215.59 370.54 995 0.11 587.38 216.67 370.70 1000 0.11 588.61 217.76 370.85 1005 0.11 589.82 218.84 370.98 1010 0.11 591.01 219.92 371.09 1015 0.11 592.19 221.01 371.18 1020 0.11 593.35 222.09 371.26 1025 0.11 594.49 223.17 371.32 1030 0.11 595.62 224.26 371.36 1035 0.11 596.72 225.34 371.38 1040 0.11 597.81 226.42 371.39 1045 0.11 598.89 227.51 371.38 1050 0.11 599.94 228.59 371.35 1055 0.11 600.98 229.67 371.31 1060 0.11 602.00 230.76 371.25 1065 0.10 603.01 231.84 371.17 1070 0.10 604.00 232.92 371.07 1075 0.10 604.97 234.01 370.96 1080 0.10 605.92 235.09 370.83 1085 0.10 606.85 236.18 370.68 1090 0.10 607.77 237.26 370.51 1095 0.10 608.67 238.34 370.33 1100 0.10 609.56 239.43 370.13 1105 0.10 610.42 240.51 369.91 1110 0.10 611.27 241.59 369.68 1115 0.10 612.10 242.68 369.43 1120 0.10 612.92 243.76 369.16 1125 0.10 613.72 244.84 368.87 1130 0.10 614.50 245.93 368.57 1135 0.10 615.26 247.01 368.25 1140 0.10 616.01 248.09 367.91 1145 0.10 616.73 249.18 367.56 1150 0.10 617.45 250.26 367.19 1155 0.10 618.14 251.34 366.80 1160 0.10 618.82 252.43 366.39 1165 0.10 619.48 253.51 365.97 1170 0.10 620.12 254.59 365.53 1175 0.10 620.74 255.68 365.07 1180 0.10 621.35 256.76 364.59 1185 0.10 621.94 257.84 364.10 1190 0.10 622.52 258.93 363.59 1195 0.10 623.07 260.01 363.06 1200 0.10 623.61 261.09 362.52 1205 0.10 624.13 262.18 361.96 1210 0.10 624.64 263.26 361.38 1215 0.10 625.13 264.34 360.78 1220 0.10 625.60 265.43 360.17 1225 0.09 626.05 266.51 359.54 1230 0.09 626.48 267.59 358.89 1235 0.09 626.90 268.68 358.23 1240 0.09 627.30 269.76 357.55 1245 0.09 627.69 270.84 356.85 1250 0.09 628.06 271.93 356.13 1255 0.09 628.40 273.01 355.40 1260 0.09 628.74 274.09 354.64 1265 0.09 629.05 275.18 353.88 1270 0.09 629.35 276.26 353.09 1275 0.09 629.63 277.34 352.29 1280 0.09 629.89 278.43 351.47 1285 0.09 630.14 279.51 350.63 1290 0.09 630.37 280.59 349.78 1295 0.09 630.58 281.68 348.90 1300 0.09 630.78 282.76 348.02 1305 0.09 630.95 283.84 347.11 1310 0.09 631.11 284.93 346.19 1315 0.09 631.26 286.01 345.24 1320 0.09 631.38 287.09 344.29 1325 0.09 631.49 288.18 343.31 1330 0.09 631.58 289.26 342.32 1335 0.09 631.65 290.34 341.31 1340 0.09 631.71 291.43 340.28 1345 0.09 631.75 292.51 339.24 1350 0.09 631.77 293.59 338.18 1355 0.09 631.78 294.68 337.10 1360 0.09 631.76 295.76 336.00 1365 0.09 631.73 296.84 334.89 1370 0.09 631.69 297.93 333.76 1375 0.09 631.62 299.01 332.61 1380 0.08 631.54 300.09 331.45 1385 0.08 631.44 301.18 330.27 1390 0.08 631.33 302.26 329.07 1395 0.08 631.20 303.34 327.85 1400 0.08 631.05 304.43 326.62 1405 0.08 630.88 305.51 325.37 1410 0.08 630.69 306.59 324.10 1415 0.08 630.49 307.68 322.81 1420 0.08 630.27 308.76 321.51 1425 0.08 630.04 309.84 320.19 1430 0.08 629.78 310.93 318.85 1435 0.08 629.51 312.01 317.50 1440 0.08 629.22 313.09 316.13 Maximum Difference 371.39 25 Year Storage Calculations ‐ Basin 13 (Pre) Rainfall Duration  (minutes) Intensity (inches/Hour)       EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference ft3  EQ 5‐4 C 0.370  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 6215.00 ft2 5 4.67 74.58 1.28 73.29 Tc 5 Minutes 10 3.41 108.91 1.92 106.99 Qa 0.004 ft3 15 2.78 133.18 2.57 130.62 P24(25)0.952 20 2.42 154.58 3.21 151.37 25 2.06 164.48 3.85 160.63 30 1.70 162.88 4.49 158.39 35 1.58 176.10 5.13 170.96 40 1.45 185.33 5.77 179.55 45 1.33 190.57 6.41 184.16 50 1.20 191.84 7.06 184.78 55 1.08 189.12 7.70 181.43 60 0.95 182.43 8.34 174.09 65 0.92 190.26 8.98 181.28 Storage Volume 151.51 70 0.88 196.96 9.62 187.34 75 0.85 202.53 10.26 192.27 80 0.81 206.96 10.90 196.06 85 0.77 210.26 11.55 198.71 90 0.74 212.42 12.19 200.23 95 0.70 213.45 12.83 200.62 100 0.67 213.35 13.47 199.88 105 0.63 212.11 14.11 198.00 110 0.60 209.74 14.75 194.99 115 0.56 206.23 15.39 190.84 120 0.53 201.59 16.04 185.56 125 0.51 204.50 16.68 187.83 130 0.50 206.98 17.32 189.66 135 0.48 209.01 17.96 191.05 140 0.47 210.60 18.60 192.00 145 0.46 211.75 19.24 192.51 150 0.44 212.47 19.88 192.59 155 0.43 212.74 20.52 192.22 160 0.42 212.58 21.17 191.41 165 0.40 211.98 21.81 190.17 170 0.39 210.94 22.45 188.49 175 0.37 209.45 23.09 186.36 180 0.36 207.53 23.73 183.80 185 0.36 210.69 24.37 186.32 190 0.35 213.70 25.01 188.69 195 0.35 216.58 25.66 190.92 200 0.34 219.31 26.30 193.01 205 0.34 221.90 26.94 194.96 210 0.33 224.35 27.58 196.77 215 0.33 226.66 28.22 198.44 220 0.33 228.83 28.86 199.96 225 0.32 230.85 29.50 201.35 230 0.32 232.74 30.15 202.59 235 0.31 234.48 30.79 203.70 240 0.31 236.09 31.43 204.66 245 0.30 237.55 32.07 205.48 250 0.30 238.87 32.71 206.16 255 0.29 240.05 33.35 206.70 260 0.29 241.09 33.99 207.10 265 0.29 241.99 34.64 207.35 270 0.28 242.75 35.28 207.47 275 0.28 243.36 35.92 207.44 280 0.27 243.84 36.56 207.28 285 0.27 244.17 37.20 206.97 290 0.26 244.36 37.84 206.52 295 0.26 244.42 38.48 205.93 300 0.25 244.33 39.13 205.20 305 0.25 244.10 39.77 204.33 310 0.25 243.72 40.41 203.32 315 0.24 243.21 41.05 202.16 320 0.24 242.56 41.69 200.87 325 0.23 241.76 42.33 199.43 330 0.23 240.83 42.97 197.85 335 0.22 239.75 43.62 196.14 340 0.22 238.53 44.26 194.28 345 0.22 237.18 44.90 192.28 350 0.21 235.68 45.54 190.14 355 0.21 234.04 46.18 187.85 360 0.20 232.25 46.82 185.43 365 0.20 234.27 47.46 186.80 370 0.20 236.24 48.11 188.14 375 0.20 238.19 48.75 189.44 380 0.20 240.10 49.39 190.71 385 0.20 241.98 50.03 191.95 390 0.20 243.82 50.67 193.15 395 0.19 245.64 51.31 194.32 400 0.19 247.41 51.95 195.46 405 0.19 249.16 52.60 196.56 410 0.19 250.87 53.24 197.64 415 0.19 252.55 53.88 198.67 420 0.19 254.20 54.52 199.68 425 0.19 255.81 55.16 200.65 430 0.19 257.39 55.80 201.59 435 0.19 258.93 56.44 202.49 440 0.19 260.45 57.08 203.36 445 0.18 261.92 57.73 204.20 450 0.18 263.37 58.37 205.00 455 0.18 264.78 59.01 205.77 460 0.18 266.16 59.65 206.51 465 0.18 267.51 60.29 207.22 470 0.18 268.82 60.93 207.89 475 0.18 270.10 61.57 208.53 480 0.18 271.35 62.22 209.13 485 0.18 272.56 62.86 209.70 490 0.17 273.74 63.50 210.24 495 0.17 274.89 64.14 210.75 500 0.17 276.00 64.78 211.22 505 0.17 277.08 65.42 211.66 510 0.17 278.13 66.06 212.06 515 0.17 279.14 66.71 212.43 520 0.17 280.12 67.35 212.77 525 0.17 281.07 67.99 213.08 530 0.17 281.98 68.63 213.35 535 0.17 282.86 69.27 213.59 540 0.16 283.71 69.91 213.79 545 0.16 284.52 70.55 213.97 550 0.16 285.30 71.20 214.11 555 0.16 286.05 71.84 214.21 560 0.16 286.76 72.48 214.28 565 0.16 287.44 73.12 214.32 570 0.16 288.09 73.76 214.33 575 0.16 288.70 74.40 214.30 580 0.16 289.29 75.04 214.24 585 0.16 289.83 75.69 214.15 590 0.15 290.35 76.33 214.02 595 0.15 290.83 76.97 213.86 600 0.15 291.28 77.61 213.67 605 0.15 291.69 78.25 213.44 610 0.15 292.07 78.89 213.18 615 0.15 292.42 79.53 212.89 620 0.15 292.73 80.18 212.56 625 0.15 293.02 80.82 212.20 630 0.15 293.26 81.46 211.81 635 0.14 293.48 82.10 211.38 640 0.14 293.66 82.74 210.92 645 0.14 293.81 83.38 210.43 650 0.14 293.92 84.02 209.90 655 0.14 294.01 84.67 209.34 660 0.14 294.05 85.31 208.75 665 0.14 294.07 85.95 208.12 670 0.14 294.05 86.59 207.46 675 0.14 294.00 87.23 206.77 680 0.14 293.92 87.87 206.04 685 0.13 293.80 88.51 205.28 690 0.13 293.65 89.16 204.49 695 0.13 293.46 89.80 203.67 700 0.13 293.25 90.44 202.81 705 0.13 292.99 91.08 201.92 710 0.13 292.71 91.72 200.99 715 0.13 292.39 92.36 200.03 720 0.13 292.04 93.00 199.04 725 0.13 293.33 93.64 199.69 730 0.13 294.61 94.29 200.32 735 0.13 295.88 94.93 200.95 740 0.13 297.14 95.57 201.57 745 0.13 298.38 96.21 202.17 750 0.13 299.62 96.85 202.77 755 0.12 300.85 97.49 203.35 760 0.12 302.06 98.13 203.93 765 0.12 303.27 98.78 204.50 770 0.12 304.47 99.42 205.05 775 0.12 305.65 100.06 205.60 780 0.12 306.83 100.70 206.13 785 0.12 308.00 101.34 206.65 790 0.12 309.15 101.98 207.17 795 0.12 310.30 102.62 207.67 800 0.12 311.43 103.27 208.17 805 0.12 312.56 103.91 208.65 810 0.12 313.67 104.55 209.12 815 0.12 314.78 105.19 209.59 820 0.12 315.87 105.83 210.04 825 0.12 316.96 106.47 210.48 830 0.12 318.03 107.11 210.92 835 0.12 319.09 107.76 211.34 840 0.12 320.15 108.40 211.75 845 0.12 321.19 109.04 212.15 850 0.12 322.23 109.68 212.55 855 0.12 323.25 110.32 212.93 860 0.12 324.26 110.96 213.30 865 0.12 325.26 111.60 213.66 870 0.12 326.26 112.25 214.01 875 0.12 327.24 112.89 214.35 880 0.12 328.21 113.53 214.68 885 0.12 329.17 114.17 215.00 890 0.12 330.12 114.81 215.31 895 0.12 331.07 115.45 215.61 900 0.12 332.00 116.09 215.90 905 0.12 332.92 116.74 216.18 910 0.11 333.83 117.38 216.45 915 0.11 334.73 118.02 216.71 920 0.11 335.62 118.66 216.96 925 0.11 336.50 119.30 217.20 930 0.11 337.37 119.94 217.43 935 0.11 338.23 120.58 217.65 940 0.11 339.08 121.23 217.86 945 0.11 339.92 121.87 218.05 950 0.11 340.75 122.51 218.24 955 0.11 341.57 123.15 218.42 960 0.11 342.38 123.79 218.59 965 0.11 343.18 124.43 218.74 970 0.11 343.96 125.07 218.89 975 0.11 344.74 125.72 219.03 980 0.11 345.51 126.36 219.15 985 0.11 346.27 127.00 219.27 990 0.11 347.02 127.64 219.38 995 0.11 347.75 128.28 219.47 1000 0.11 348.48 128.92 219.56 1005 0.11 349.20 129.56 219.63 1010 0.11 349.91 130.20 219.70 1015 0.11 350.60 130.85 219.76 1020 0.11 351.29 131.49 219.80 1025 0.11 351.96 132.13 219.84 1030 0.11 352.63 132.77 219.86 1035 0.11 353.29 133.41 219.87 1040 0.11 353.93 134.05 219.88 1045 0.11 354.57 134.69 219.87 1050 0.11 355.19 135.34 219.86 1055 0.11 355.81 135.98 219.83 1060 0.11 356.41 136.62 219.79 1065 0.10 357.01 137.26 219.75 1070 0.10 357.59 137.90 219.69 1075 0.10 358.17 138.54 219.62 1080 0.10 358.73 139.18 219.55 1085 0.10 359.28 139.83 219.46 1090 0.10 359.83 140.47 219.36 1095 0.10 360.36 141.11 219.25 1100 0.10 360.88 141.75 219.13 1105 0.10 361.40 142.39 219.01 1110 0.10 361.90 143.03 218.87 1115 0.10 362.39 143.67 218.72 1120 0.10 362.87 144.32 218.56 1125 0.10 363.35 144.96 218.39 1130 0.10 363.81 145.60 218.21 1135 0.10 364.26 146.24 218.02 1140 0.10 364.70 146.88 217.82 1145 0.10 365.13 147.52 217.61 1150 0.10 365.55 148.16 217.39 1155 0.10 365.97 148.81 217.16 1160 0.10 366.37 149.45 216.92 1165 0.10 366.76 150.09 216.67 1170 0.10 367.14 150.73 216.41 1175 0.10 367.51 151.37 216.14 1180 0.10 367.87 152.01 215.86 1185 0.10 368.22 152.65 215.56 1190 0.10 368.56 153.30 215.26 1195 0.10 368.89 153.94 214.95 1200 0.10 369.21 154.58 214.63 1205 0.10 369.51 155.22 214.30 1210 0.10 369.81 155.86 213.95 1215 0.10 370.10 156.50 213.60 1220 0.10 370.38 157.14 213.24 1225 0.09 370.65 157.79 212.86 1230 0.09 370.91 158.43 212.48 1235 0.09 371.15 159.07 212.09 1240 0.09 371.39 159.71 211.68 1245 0.09 371.62 160.35 211.27 1250 0.09 371.84 160.99 210.84 1255 0.09 372.04 161.63 210.41 1260 0.09 372.24 162.28 209.96 1265 0.09 372.43 162.92 209.51 1270 0.09 372.60 163.56 209.04 1275 0.09 372.77 164.20 208.57 1280 0.09 372.92 164.84 208.08 1285 0.09 373.07 165.48 207.59 1290 0.09 373.21 166.12 207.08 1295 0.09 373.33 166.76 206.57 1300 0.09 373.45 167.41 206.04 1305 0.09 373.55 168.05 205.50 1310 0.09 373.65 168.69 204.96 1315 0.09 373.73 169.33 204.40 1320 0.09 373.80 169.97 203.83 1325 0.09 373.87 170.61 203.26 1330 0.09 373.92 171.25 202.67 1335 0.09 373.97 171.90 202.07 1340 0.09 374.00 172.54 201.46 1345 0.09 374.02 173.18 200.84 1350 0.09 374.04 173.82 200.22 1355 0.09 374.04 174.46 199.58 1360 0.09 374.03 175.10 198.93 1365 0.09 374.01 175.74 198.27 1370 0.09 373.99 176.39 197.60 1375 0.09 373.95 177.03 196.92 1380 0.08 373.90 177.67 196.23 1385 0.08 373.84 178.31 195.53 1390 0.08 373.77 178.95 194.82 1395 0.08 373.70 179.59 194.10 1400 0.08 373.61 180.23 193.37 1405 0.08 373.51 180.88 192.63 1410 0.08 373.40 181.52 191.88 1415 0.08 373.28 182.16 191.12 1420 0.08 373.15 182.80 190.35 1425 0.08 373.01 183.44 189.57 1430 0.08 372.86 184.08 188.78 1435 0.08 372.70 184.72 187.97 1440 0.08 372.53 185.37 187.16 Maximum Difference 219.88 25 Year Storage Calculations ‐ Basin 14 (Developed) Rainfall Duration  (minutes) Intensity (inches/Hour)      EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference  ft3 EQ 5‐4 C 0.547  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 26705.00 ft2 5 4.67 473.46 14.66 458.80 Tc 13 Minutes 10 3.41 691.44 18.73 672.70 Qa 0.027 ft3 15 2.78 845.54 22.80 822.73 P24(25)0.952 20 2.42 981.39 26.88 954.52 25 2.06 1044.25 30.95 1013.30 30 1.70 1034.11 35.02 999.09 35 1.58 1117.99 39.09 1078.89 40 1.45 1176.58 43.16 1133.42 45 1.33 1209.90 47.24 1162.66 50 1.20 1217.94 51.31 1166.63 55 1.08 1200.70 55.38 1145.32 60 0.95 1158.20 59.45 1098.75 65 0.92 1207.93 63.52 1144.41 70 0.88 1250.46 67.60 1182.87 75 0.85 1285.80 71.67 1214.13 80 0.81 1313.93 75.74 1238.19 85 0.77 1334.87 79.81 1255.05 90 0.74 1348.60 83.89 1264.72 95 0.70 1355.14 87.96 1267.18 100 0.67 1354.48 92.03 1262.45 105 0.63 1346.63 96.10 1250.52 110 0.60 1331.57 100.17 1231.40 115 0.56 1309.32 104.25 1205.07 120 0.53 1279.86 108.32 1171.55 125 0.51 1298.34 112.39 1185.95 130 0.50 1314.03 116.46 1197.57 135 0.48 1326.93 120.53 1206.40 140 0.47 1337.04 124.61 1212.44 145 0.46 1344.37 128.68 1215.69 150 0.44 1348.91 132.75 1216.16 155 0.43 1350.66 136.82 1213.83 160 0.42 1349.62 140.89 1208.72 165 0.40 1345.79 144.97 1200.82 170 0.39 1339.17 149.04 1190.14 175 0.37 1329.77 153.11 1176.66 180 0.36 1317.58 157.18 1160.40 185 0.36 1337.61 161.25 1176.36 190 0.35 1356.75 165.33 1191.42 195 0.35 1374.99 169.40 1205.59 200 0.34 1392.33 173.47 1218.86 205 0.34 1408.78 177.54 1231.24 210 0.33 1424.34 181.62 1242.72 215 0.33 1438.99 185.69 1253.31 220 0.33 1452.76 189.76 1263.00 225 0.32 1465.62 193.83 1271.79 230 0.32 1477.59 197.90 1279.69 235 0.31 1488.67 201.98 1286.69 240 0.31 1498.85 206.05 1292.80 245 0.30 1508.14 210.12 1298.02 250 0.30 1516.53 214.19 1302.33 255 0.29 1524.02 218.26 1305.75 260 0.29 1530.62 222.34 1308.28 265 0.29 1536.32 226.41 1309.91 270 0.28 1541.13 230.48 1310.65 275 0.28 1545.04 234.55 1310.49 280 0.27 1548.05 238.62 1309.43 285 0.27 1550.17 242.70 1307.48 290 0.26 1551.40 246.77 1304.63 295 0.26 1551.73 250.84 1300.89 300 0.25 1551.16 254.91 1296.25 305 0.25 1549.70 258.99 1290.71 310 0.25 1547.34 263.06 1284.29 315 0.24 1544.09 267.13 1276.96 320 0.24 1539.94 271.20 1268.74 325 0.23 1534.90 275.27 1259.62 330 0.23 1528.96 279.35 1249.61 335 0.22 1522.12 283.42 1238.70 340 0.22 1514.39 287.49 1226.90 345 0.22 1505.76 291.56 1214.20 350 0.21 1496.24 295.63 1200.61 355 0.21 1485.83 299.71 1186.12 360 0.20 1474.52 303.78 1170.74 365 0.20 1487.29 307.85 1179.44 370 0.20 1499.85 311.92 1187.93 375 0.20 1512.20 315.99 1196.20 380 0.20 1524.33 320.07 1204.27 385 0.20 1536.26 324.14 1212.12 390 0.20 1547.97 328.21 1219.76 395 0.19 1559.48 332.28 1227.19 400 0.19 1570.77 336.36 1234.41 405 0.19 1581.85 340.43 1241.42 410 0.19 1592.72 344.50 1248.22 415 0.19 1603.37 348.57 1254.80 420 0.19 1613.82 352.64 1261.18 425 0.19 1624.06 356.72 1267.34 430 0.19 1634.08 360.79 1273.29 435 0.19 1643.89 364.86 1279.03 440 0.19 1653.50 368.93 1284.56 445 0.18 1662.89 373.00 1289.88 450 0.18 1672.07 377.08 1294.99 455 0.18 1681.03 381.15 1299.89 460 0.18 1689.79 385.22 1304.57 465 0.18 1698.34 389.29 1309.04 470 0.18 1706.67 393.36 1313.31 475 0.18 1714.79 397.44 1317.36 480 0.18 1722.71 401.51 1321.20 485 0.18 1730.41 405.58 1324.83 490 0.17 1737.90 409.65 1328.24 495 0.17 1745.18 413.72 1331.45 500 0.17 1752.24 417.80 1334.45 505 0.17 1759.10 421.87 1337.23 510 0.17 1765.74 425.94 1339.80 515 0.17 1772.18 430.01 1342.16 520 0.17 1778.40 434.09 1344.31 525 0.17 1784.41 438.16 1346.25 530 0.17 1790.21 442.23 1347.98 535 0.17 1795.80 446.30 1349.50 540 0.16 1801.18 450.37 1350.80 545 0.16 1806.34 454.45 1351.90 550 0.16 1811.30 458.52 1352.78 555 0.16 1816.04 462.59 1353.45 560 0.16 1820.57 466.66 1353.91 565 0.16 1824.90 470.73 1354.16 570 0.16 1829.01 474.81 1354.20 575 0.16 1832.91 478.88 1354.03 580 0.16 1836.59 482.95 1353.64 585 0.16 1840.07 487.02 1353.05 590 0.15 1843.34 491.09 1352.24 595 0.15 1846.39 495.17 1351.22 600 0.15 1849.23 499.24 1349.99 605 0.15 1851.86 503.31 1348.55 610 0.15 1854.28 507.38 1346.90 615 0.15 1856.49 511.46 1345.04 620 0.15 1858.49 515.53 1342.96 625 0.15 1860.28 519.60 1340.68 630 0.15 1861.85 523.67 1338.18 635 0.14 1863.22 527.74 1335.47 640 0.14 1864.37 531.82 1332.56 645 0.14 1865.31 535.89 1329.43 650 0.14 1866.04 539.96 1326.08 655 0.14 1866.56 544.03 1322.53 660 0.14 1866.87 548.10 1318.77 665 0.14 1866.97 552.18 1314.79 670 0.14 1866.86 556.25 1310.61 675 0.14 1866.53 560.32 1306.21 680 0.14 1865.99 564.39 1301.60 685 0.13 1865.25 568.46 1296.78 690 0.13 1864.29 572.54 1291.75 695 0.13 1863.12 576.61 1286.51 700 0.13 1861.73 580.68 1281.05 705 0.13 1860.14 584.75 1275.39 710 0.13 1858.34 588.83 1269.51 715 0.13 1856.32 592.90 1263.43 720 0.13 1854.10 596.97 1257.13 725 0.13 1862.28 601.04 1261.24 730 0.13 1870.40 605.11 1265.28 735 0.13 1878.45 609.19 1269.26 740 0.13 1886.43 613.26 1273.17 745 0.13 1894.35 617.33 1277.02 750 0.13 1902.21 621.40 1280.81 755 0.12 1910.00 625.47 1284.52 760 0.12 1917.72 629.55 1288.18 765 0.12 1925.39 633.62 1291.77 770 0.12 1932.98 637.69 1295.29 775 0.12 1940.51 641.76 1298.75 780 0.12 1947.98 645.83 1302.15 785 0.12 1955.38 649.91 1305.48 790 0.12 1962.72 653.98 1308.74 795 0.12 1969.99 658.05 1311.94 800 0.12 1977.20 662.12 1315.08 805 0.12 1984.35 666.19 1318.15 810 0.12 1991.42 670.27 1321.16 815 0.12 1998.44 674.34 1324.10 820 0.12 2005.39 678.41 1326.98 825 0.12 2012.27 682.48 1329.79 830 0.12 2019.09 686.56 1332.54 835 0.12 2025.85 690.63 1335.22 840 0.12 2032.54 694.70 1337.84 845 0.12 2039.16 698.77 1340.39 850 0.12 2045.72 702.84 1342.88 855 0.12 2052.22 706.92 1345.30 860 0.12 2058.65 710.99 1347.66 865 0.12 2065.01 715.06 1349.95 870 0.12 2071.31 719.13 1352.18 875 0.12 2077.55 723.20 1354.35 880 0.12 2083.72 727.28 1356.45 885 0.12 2089.83 731.35 1358.48 890 0.12 2095.87 735.42 1360.45 895 0.12 2101.85 739.49 1362.36 900 0.12 2107.76 743.56 1364.20 905 0.12 2113.61 747.64 1365.97 910 0.11 2119.39 751.71 1367.68 915 0.11 2125.11 755.78 1369.33 920 0.11 2130.76 759.85 1370.91 925 0.11 2136.35 763.93 1372.43 930 0.11 2141.88 768.00 1373.88 935 0.11 2147.34 772.07 1375.27 940 0.11 2152.73 776.14 1376.59 945 0.11 2158.06 780.21 1377.85 950 0.11 2163.33 784.29 1379.04 955 0.11 2168.53 788.36 1380.17 960 0.11 2173.66 792.43 1381.23 965 0.11 2178.73 796.50 1382.23 970 0.11 2183.74 800.57 1383.16 975 0.11 2188.68 804.65 1384.03 980 0.11 2193.56 808.72 1384.84 985 0.11 2198.37 812.79 1385.58 990 0.11 2203.11 816.86 1386.25 995 0.11 2207.80 820.93 1386.86 1000 0.11 2212.41 825.01 1387.41 1005 0.11 2216.97 829.08 1387.89 1010 0.11 2221.45 833.15 1388.30 1015 0.11 2225.88 837.22 1388.65 1020 0.11 2230.23 841.29 1388.94 1025 0.11 2234.53 845.37 1389.16 1030 0.11 2238.76 849.44 1389.32 1035 0.11 2242.92 853.51 1389.41 1040 0.11 2247.02 857.58 1389.43 1045 0.11 2251.05 861.66 1389.40 1050 0.11 2255.02 865.73 1389.29 1055 0.11 2258.93 869.80 1389.13 1060 0.11 2262.77 873.87 1388.89 1065 0.10 2266.54 877.94 1388.60 1070 0.10 2270.25 882.02 1388.24 1075 0.10 2273.90 886.09 1387.81 1080 0.10 2277.48 890.16 1387.32 1085 0.10 2280.99 894.23 1386.76 1090 0.10 2284.45 898.30 1386.14 1095 0.10 2287.83 902.38 1385.46 1100 0.10 2291.15 906.45 1384.71 1105 0.10 2294.41 910.52 1383.89 1110 0.10 2297.60 914.59 1383.01 1115 0.10 2300.73 918.66 1382.07 1120 0.10 2303.79 922.74 1381.06 1125 0.10 2306.79 926.81 1379.98 1130 0.10 2309.72 930.88 1378.84 1135 0.10 2312.59 934.95 1377.64 1140 0.10 2315.40 939.03 1376.37 1145 0.10 2318.13 943.10 1375.04 1150 0.10 2320.81 947.17 1373.64 1155 0.10 2323.42 951.24 1372.18 1160 0.10 2325.96 955.31 1370.65 1165 0.10 2328.44 959.39 1369.06 1170 0.10 2330.86 963.46 1367.40 1175 0.10 2333.21 967.53 1365.68 1180 0.10 2335.49 971.60 1363.89 1185 0.10 2337.71 975.67 1362.04 1190 0.10 2339.87 979.75 1360.12 1195 0.10 2341.96 983.82 1358.14 1200 0.10 2343.99 987.89 1356.10 1205 0.10 2345.95 991.96 1353.99 1210 0.10 2347.84 996.03 1351.81 1215 0.10 2349.68 1000.11 1349.57 1220 0.10 2351.44 1004.18 1347.26 1225 0.09 2353.15 1008.25 1344.90 1230 0.09 2354.78 1012.32 1342.46 1235 0.09 2356.36 1016.40 1339.96 1240 0.09 2357.86 1020.47 1337.40 1245 0.09 2359.31 1024.54 1334.77 1250 0.09 2360.69 1028.61 1332.08 1255 0.09 2362.00 1032.68 1329.32 1260 0.09 2363.25 1036.76 1326.49 1265 0.09 2364.43 1040.83 1323.61 1270 0.09 2365.55 1044.90 1320.65 1275 0.09 2366.61 1048.97 1317.64 1280 0.09 2367.60 1053.04 1314.55 1285 0.09 2368.52 1057.12 1311.41 1290 0.09 2369.38 1061.19 1308.20 1295 0.09 2370.18 1065.26 1304.92 1300 0.09 2370.91 1069.33 1301.58 1305 0.09 2371.58 1073.40 1298.17 1310 0.09 2372.18 1077.48 1294.70 1315 0.09 2372.71 1081.55 1291.16 1320 0.09 2373.19 1085.62 1287.56 1325 0.09 2373.59 1089.69 1283.90 1330 0.09 2373.93 1093.76 1280.17 1335 0.09 2374.21 1097.84 1276.37 1340 0.09 2374.42 1101.91 1272.52 1345 0.09 2374.57 1105.98 1268.59 1350 0.09 2374.66 1110.05 1264.60 1355 0.09 2374.67 1114.13 1260.55 1360 0.09 2374.63 1118.20 1256.43 1365 0.09 2374.52 1122.27 1252.25 1370 0.09 2374.34 1126.34 1248.00 1375 0.09 2374.10 1130.41 1243.69 1380 0.08 2373.79 1134.49 1239.31 1385 0.08 2373.42 1138.56 1234.87 1390 0.08 2372.99 1142.63 1230.36 1395 0.08 2372.49 1146.70 1225.79 1400 0.08 2371.92 1150.77 1221.15 1405 0.08 2371.29 1154.85 1216.45 1410 0.08 2370.60 1158.92 1211.68 1415 0.08 2369.84 1162.99 1206.85 1420 0.08 2369.02 1167.06 1201.95 1425 0.08 2368.13 1171.13 1196.99 1430 0.08 2367.18 1175.21 1191.97 1435 0.08 2366.16 1179.28 1186.88 1440 0.08 2365.07 1183.35 1181.72 Maximum Difference 1389.43 25 Year Storage Calculations ‐ Basin 14 (Pre) Rainfall Duration  (minutes) Intensity (inches/Hour)       EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference ft3  EQ 5‐4 C 0.370  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 26705.00 ft2 5 4.67 320.44 9.92 310.52 Tc 13 Minutes 10 3.41 467.97 12.68 455.29 Qa 0.018 ft3 15 2.78 572.27 15.43 556.83 P24(25)0.952 20 2.42 664.21 18.19 646.02 25 2.06 706.76 20.95 685.81 30 1.70 699.89 23.70 676.19 35 1.58 756.66 26.46 730.20 40 1.45 796.32 29.21 767.11 45 1.33 818.87 31.97 786.90 50 1.20 824.31 34.73 789.58 55 1.08 812.64 37.48 775.16 60 0.95 783.88 40.24 743.64 65 0.92 817.54 42.99 774.54 Storage Volume 449.06 70 0.88 846.32 45.75 800.57 75 0.85 870.24 48.51 821.73 80 0.81 889.28 51.26 838.01 85 0.77 903.45 54.02 849.43 90 0.74 912.74 56.77 855.97 95 0.70 917.17 59.53 857.64 100 0.67 916.72 62.29 854.44 105 0.63 911.41 65.04 846.36 110 0.60 901.22 67.80 833.42 115 0.56 886.15 70.55 815.60 120 0.53 866.22 73.31 792.91 125 0.51 878.73 76.07 802.66 130 0.50 889.35 78.82 810.52 135 0.48 898.08 81.58 816.50 140 0.47 904.92 84.33 820.59 145 0.46 909.88 87.09 822.79 150 0.44 912.95 89.85 823.10 155 0.43 914.13 92.60 821.53 160 0.42 913.43 95.36 818.07 165 0.40 910.84 98.11 812.73 170 0.39 906.36 100.87 805.49 175 0.37 900.00 103.63 796.37 180 0.36 891.75 106.38 785.36 185 0.36 905.30 109.14 796.17 190 0.35 918.26 111.89 806.36 195 0.35 930.60 114.65 815.95 200 0.34 942.34 117.41 824.93 205 0.34 953.47 120.16 833.31 210 0.33 964.00 122.92 841.08 215 0.33 973.92 125.67 848.25 220 0.33 983.24 128.43 854.80 225 0.32 991.94 131.19 860.76 230 0.32 1000.05 133.94 866.10 235 0.31 1007.54 136.70 870.84 240 0.31 1014.43 139.45 874.98 245 0.30 1020.72 142.21 878.51 250 0.30 1026.39 144.97 881.43 255 0.29 1031.47 147.72 883.74 260 0.29 1035.93 150.48 885.45 265 0.29 1039.79 153.23 886.56 270 0.28 1043.05 155.99 887.05 275 0.28 1045.69 158.75 886.95 280 0.27 1047.73 161.50 886.23 285 0.27 1049.17 164.26 884.91 290 0.26 1050.00 167.01 882.98 295 0.26 1050.22 169.77 880.45 300 0.25 1049.84 172.53 877.31 305 0.25 1048.85 175.28 873.56 310 0.25 1047.25 178.04 869.21 315 0.24 1045.05 180.80 864.26 320 0.24 1042.24 183.55 858.69 325 0.23 1038.83 186.31 852.52 330 0.23 1034.81 189.06 845.75 335 0.22 1030.18 191.82 838.36 340 0.22 1024.95 194.58 830.38 345 0.22 1019.11 197.33 821.78 350 0.21 1012.67 200.09 812.58 355 0.21 1005.62 202.84 802.77 360 0.20 997.97 205.60 792.37 365 0.20 1006.61 208.36 798.25 370 0.20 1015.11 211.11 804.00 375 0.20 1023.47 213.87 809.60 380 0.20 1031.68 216.62 815.06 385 0.20 1039.75 219.38 820.37 390 0.20 1047.68 222.14 825.54 395 0.19 1055.46 224.89 830.57 400 0.19 1063.11 227.65 835.46 405 0.19 1070.61 230.40 840.20 410 0.19 1077.96 233.16 844.80 415 0.19 1085.18 235.92 849.26 420 0.19 1092.25 238.67 853.57 425 0.19 1099.17 241.43 857.75 430 0.19 1105.96 244.18 861.77 435 0.19 1112.60 246.94 865.66 440 0.19 1119.10 249.70 869.40 445 0.18 1125.45 252.45 873.00 450 0.18 1131.67 255.21 876.46 455 0.18 1137.74 257.96 879.77 460 0.18 1143.66 260.72 882.94 465 0.18 1149.45 263.48 885.97 470 0.18 1155.09 266.23 888.86 475 0.18 1160.58 268.99 891.60 480 0.18 1165.94 271.74 894.20 485 0.18 1171.15 274.50 896.65 490 0.17 1176.22 277.26 898.96 495 0.17 1181.15 280.01 901.14 500 0.17 1185.93 282.77 903.16 505 0.17 1190.57 285.52 905.05 510 0.17 1195.07 288.28 906.79 515 0.17 1199.42 291.04 908.39 520 0.17 1203.63 293.79 909.84 525 0.17 1207.70 296.55 911.15 530 0.17 1211.63 299.30 912.32 535 0.17 1215.41 302.06 913.35 540 0.16 1219.05 304.82 914.23 545 0.16 1222.55 307.57 914.97 550 0.16 1225.90 310.33 915.57 555 0.16 1229.11 313.08 916.03 560 0.16 1232.18 315.84 916.34 565 0.16 1235.10 318.60 916.51 570 0.16 1237.88 321.35 916.53 575 0.16 1240.52 324.11 916.41 580 0.16 1243.02 326.86 916.15 585 0.16 1245.37 329.62 915.75 590 0.15 1247.58 332.38 915.21 595 0.15 1249.65 335.13 914.52 600 0.15 1251.57 337.89 913.68 605 0.15 1253.35 340.64 912.71 610 0.15 1254.99 343.40 911.59 615 0.15 1256.49 346.16 910.33 620 0.15 1257.84 348.91 908.93 625 0.15 1259.05 351.67 907.38 630 0.15 1260.12 354.42 905.69 635 0.14 1261.04 357.18 903.86 640 0.14 1261.82 359.94 901.88 645 0.14 1262.46 362.69 899.76 650 0.14 1262.95 365.45 897.50 655 0.14 1263.30 368.20 895.10 660 0.14 1263.51 370.96 892.55 665 0.14 1263.58 373.72 889.86 670 0.14 1263.50 376.47 887.03 675 0.14 1263.28 379.23 884.05 680 0.14 1262.92 381.98 880.93 685 0.13 1262.41 384.74 877.67 690 0.13 1261.76 387.50 874.27 695 0.13 1260.97 390.25 870.72 700 0.13 1260.03 393.01 867.03 705 0.13 1258.96 395.76 863.19 710 0.13 1257.74 398.52 859.22 715 0.13 1256.37 401.28 855.10 720 0.13 1254.87 404.03 850.84 725 0.13 1260.40 406.79 853.62 730 0.13 1265.90 409.54 856.35 735 0.13 1271.34 412.30 859.04 740 0.13 1276.75 415.06 861.69 745 0.13 1282.11 417.81 864.30 750 0.13 1287.43 420.57 866.86 755 0.12 1292.70 423.33 869.37 760 0.12 1297.93 426.08 871.85 765 0.12 1303.11 428.84 874.28 770 0.12 1308.26 431.59 876.66 775 0.12 1313.35 434.35 879.00 780 0.12 1318.41 437.11 881.30 785 0.12 1323.42 439.86 883.56 790 0.12 1328.38 442.62 885.77 795 0.12 1333.31 445.37 887.93 800 0.12 1338.18 448.13 890.06 805 0.12 1343.02 450.89 892.13 810 0.12 1347.81 453.64 894.17 815 0.12 1352.56 456.40 896.16 820 0.12 1357.26 459.15 898.11 825 0.12 1361.92 461.91 900.01 830 0.12 1366.53 464.67 901.87 835 0.12 1371.11 467.42 903.68 840 0.12 1375.63 470.18 905.46 845 0.12 1380.12 472.93 907.18 850 0.12 1384.56 475.69 908.87 855 0.12 1388.95 478.45 910.51 860 0.12 1393.31 481.20 912.11 865 0.12 1397.62 483.96 913.66 870 0.12 1401.88 486.71 915.17 875 0.12 1406.10 489.47 916.63 880 0.12 1410.28 492.23 918.05 885 0.12 1414.41 494.98 919.43 890 0.12 1418.50 497.74 920.76 895 0.12 1422.55 500.49 922.05 900 0.12 1426.55 503.25 923.30 905 0.12 1430.51 506.01 924.50 910 0.11 1434.42 508.76 925.66 915 0.11 1438.29 511.52 926.77 920 0.11 1442.12 514.27 927.84 925 0.11 1445.90 517.03 928.87 930 0.11 1449.64 519.79 929.85 935 0.11 1453.33 522.54 930.79 940 0.11 1456.98 525.30 931.69 945 0.11 1460.59 528.05 932.54 950 0.11 1464.15 530.81 933.34 955 0.11 1467.67 533.57 934.11 960 0.11 1471.15 536.32 934.83 965 0.11 1474.58 539.08 935.50 970 0.11 1477.97 541.83 936.13 975 0.11 1481.31 544.59 936.72 980 0.11 1484.61 547.35 937.27 985 0.11 1487.87 550.10 937.77 990 0.11 1491.08 552.86 938.22 995 0.11 1494.25 555.61 938.64 1000 0.11 1497.38 558.37 939.01 1005 0.11 1500.46 561.13 939.33 1010 0.11 1503.49 563.88 939.61 1015 0.11 1506.49 566.64 939.85 1020 0.11 1509.44 569.39 940.04 1025 0.11 1512.34 572.15 940.19 1030 0.11 1515.21 574.91 940.30 1035 0.11 1518.02 577.66 940.36 1040 0.11 1520.80 580.42 940.38 1045 0.11 1523.53 583.17 940.35 1050 0.11 1526.21 585.93 940.28 1055 0.11 1528.86 588.69 940.17 1060 0.11 1531.46 591.44 940.01 1065 0.10 1534.01 594.20 939.81 1070 0.10 1536.52 596.95 939.57 1075 0.10 1538.99 599.71 939.28 1080 0.10 1541.41 602.47 938.95 1085 0.10 1543.79 605.22 938.57 1090 0.10 1546.13 607.98 938.15 1095 0.10 1548.42 610.73 937.69 1100 0.10 1550.67 613.49 937.18 1105 0.10 1552.87 616.25 936.63 1110 0.10 1555.03 619.00 936.03 1115 0.10 1557.15 621.76 935.39 1120 0.10 1559.22 624.51 934.71 1125 0.10 1561.25 627.27 933.98 1130 0.10 1563.24 630.03 933.21 1135 0.10 1565.18 632.78 932.40 1140 0.10 1567.08 635.54 931.54 1145 0.10 1568.93 638.29 930.63 1150 0.10 1570.74 641.05 929.69 1155 0.10 1572.51 643.81 928.70 1160 0.10 1574.23 646.56 927.66 1165 0.10 1575.91 649.32 926.59 1170 0.10 1577.54 652.07 925.47 1175 0.10 1579.13 654.83 924.30 1180 0.10 1580.68 657.59 923.09 1185 0.10 1582.18 660.34 921.84 1190 0.10 1583.64 663.10 920.54 1195 0.10 1585.05 665.85 919.20 1200 0.10 1586.43 668.61 917.82 1205 0.10 1587.75 671.37 916.39 1210 0.10 1589.04 674.12 914.91 1215 0.10 1590.28 676.88 913.40 1220 0.10 1591.47 679.64 911.84 1225 0.09 1592.63 682.39 910.23 1230 0.09 1593.73 685.15 908.59 1235 0.09 1594.80 687.90 906.90 1240 0.09 1595.82 690.66 905.16 1245 0.09 1596.80 693.42 903.38 1250 0.09 1597.73 696.17 901.56 1255 0.09 1598.62 698.93 899.69 1260 0.09 1599.46 701.68 897.78 1265 0.09 1600.26 704.44 895.83 1270 0.09 1601.02 707.20 893.83 1275 0.09 1601.74 709.95 891.79 1280 0.09 1602.41 712.71 889.70 1285 0.09 1603.03 715.46 887.57 1290 0.09 1603.61 718.22 885.40 1295 0.09 1604.15 720.98 883.18 1300 0.09 1604.65 723.73 880.92 1305 0.09 1605.10 726.49 878.61 1310 0.09 1605.51 729.24 876.26 1315 0.09 1605.87 732.00 873.87 1320 0.09 1606.19 734.76 871.43 1325 0.09 1606.46 737.51 868.95 1330 0.09 1606.70 740.27 866.43 1335 0.09 1606.88 743.02 863.86 1340 0.09 1607.03 745.78 861.25 1345 0.09 1607.13 748.54 858.59 1350 0.09 1607.18 751.29 855.89 1355 0.09 1607.20 754.05 853.15 1360 0.09 1607.16 756.80 850.36 1365 0.09 1607.09 759.56 847.53 1370 0.09 1606.97 762.32 844.65 1375 0.09 1606.81 765.07 841.73 1380 0.08 1606.60 767.83 838.77 1385 0.08 1606.35 770.58 835.77 1390 0.08 1606.05 773.34 832.71 1395 0.08 1605.72 776.10 829.62 1400 0.08 1605.33 778.85 826.48 1405 0.08 1604.91 781.61 823.30 1410 0.08 1604.44 784.36 820.07 1415 0.08 1603.92 787.12 816.80 1420 0.08 1603.37 789.88 813.49 1425 0.08 1602.77 792.63 810.13 1430 0.08 1602.12 795.39 806.73 1435 0.08 1601.43 798.14 803.29 1440 0.08 1600.70 800.90 799.80 Maximum Difference 940.38 25 Year Storage Calculations ‐ Basin 15 (Developed) Rainfall Duration  (minutes) Intensity (inches/Hour)      EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference  ft3 EQ 5‐4 C 0.458  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 7339.00 ft2 5 4.67 108.96 1.87 107.08 Tc 5 Minutes 10 3.41 159.12 2.81 156.31 Qa 0.006 ft3 15 2.78 194.58 3.75 190.83 P24(25)0.952 20 2.42 225.84 4.69 221.16 25 2.06 240.31 5.62 234.69 30 1.70 237.98 6.56 231.42 35 1.58 257.28 7.50 249.78 40 1.45 270.76 8.43 262.33 45 1.33 278.43 9.37 269.06 50 1.20 280.28 10.31 269.97 55 1.08 276.31 11.25 265.07 60 0.95 266.53 12.18 254.35 65 0.92 277.98 13.12 264.86 70 0.88 287.76 14.06 273.71 75 0.85 295.89 14.99 280.90 80 0.81 302.37 15.93 286.44 85 0.77 307.19 16.87 290.32 90 0.74 310.35 17.80 292.54 95 0.70 311.85 18.74 293.11 100 0.67 311.70 19.68 292.02 105 0.63 309.89 20.62 289.28 110 0.60 306.43 21.55 284.88 115 0.56 301.31 22.49 278.82 120 0.53 294.53 23.43 271.10 125 0.51 298.78 24.36 274.42 130 0.50 302.39 25.30 277.09 135 0.48 305.36 26.24 279.12 140 0.47 307.69 27.18 280.51 145 0.46 309.37 28.11 281.26 150 0.44 310.42 29.05 281.37 155 0.43 310.82 29.99 280.83 160 0.42 310.58 30.92 279.66 165 0.40 309.70 31.86 277.84 170 0.39 308.18 32.80 275.38 175 0.37 306.01 33.74 272.28 180 0.36 303.21 34.67 268.54 185 0.36 307.82 35.61 272.21 190 0.35 312.22 36.55 275.68 195 0.35 316.42 37.48 278.94 200 0.34 320.41 38.42 281.99 205 0.34 324.20 39.36 284.84 210 0.33 327.78 40.30 287.48 215 0.33 331.15 41.23 289.92 220 0.33 334.32 42.17 292.15 225 0.32 337.28 43.11 294.17 230 0.32 340.03 44.04 295.99 235 0.31 342.58 44.98 297.60 240 0.31 344.92 45.92 299.01 245 0.30 347.06 46.85 300.21 250 0.30 348.99 47.79 301.20 255 0.29 350.72 48.73 301.99 260 0.29 352.23 49.67 302.57 265 0.29 353.55 50.60 302.94 270 0.28 354.65 51.54 303.11 275 0.28 355.55 52.48 303.08 280 0.27 356.25 53.41 302.83 285 0.27 356.74 54.35 302.38 290 0.26 357.02 55.29 301.73 295 0.26 357.09 56.23 300.87 300 0.25 356.96 57.16 299.80 305 0.25 356.63 58.10 298.53 310 0.25 356.08 59.04 297.05 315 0.24 355.33 59.97 295.36 320 0.24 354.38 60.91 293.47 325 0.23 353.22 61.85 291.37 330 0.23 351.85 62.79 289.07 335 0.22 350.28 63.72 286.56 340 0.22 348.50 64.66 283.84 345 0.22 346.52 65.60 280.92 350 0.21 344.32 66.53 277.79 355 0.21 341.93 67.47 274.46 360 0.20 339.33 68.41 270.92 365 0.20 342.26 69.34 272.92 370 0.20 345.15 70.28 274.87 375 0.20 348.00 71.22 276.78 380 0.20 350.79 72.16 278.63 385 0.20 353.53 73.09 280.44 390 0.20 356.23 74.03 282.20 395 0.19 358.88 74.97 283.91 400 0.19 361.47 75.90 285.57 405 0.19 364.02 76.84 287.18 410 0.19 366.53 77.78 288.75 415 0.19 368.98 78.72 290.26 420 0.19 371.38 79.65 291.73 425 0.19 373.74 80.59 293.15 430 0.19 376.04 81.53 294.52 435 0.19 378.30 82.46 295.84 440 0.19 380.51 83.40 297.11 445 0.18 382.67 84.34 298.33 450 0.18 384.79 85.28 299.51 455 0.18 386.85 86.21 300.64 460 0.18 388.86 87.15 301.71 465 0.18 390.83 88.09 302.74 470 0.18 392.75 89.02 303.73 475 0.18 394.62 89.96 304.66 480 0.18 396.44 90.90 305.54 485 0.18 398.21 91.84 306.38 490 0.17 399.94 92.77 307.16 495 0.17 401.61 93.71 307.90 500 0.17 403.24 94.65 308.59 505 0.17 404.81 95.58 309.23 510 0.17 406.34 96.52 309.82 515 0.17 407.82 97.46 310.37 520 0.17 409.26 98.39 310.86 525 0.17 410.64 99.33 311.31 530 0.17 411.97 100.27 311.70 535 0.17 413.26 101.21 312.05 540 0.16 414.50 102.14 312.35 545 0.16 415.69 103.08 312.61 550 0.16 416.83 104.02 312.81 555 0.16 417.92 104.95 312.96 560 0.16 418.96 105.89 313.07 565 0.16 419.96 106.83 313.13 570 0.16 420.90 107.77 313.14 575 0.16 421.80 108.70 313.10 580 0.16 422.65 109.64 313.01 585 0.16 423.45 110.58 312.87 590 0.15 424.20 111.51 312.68 595 0.15 424.90 112.45 312.45 600 0.15 425.56 113.39 312.17 605 0.15 426.16 114.33 311.84 610 0.15 426.72 115.26 311.46 615 0.15 427.23 116.20 311.03 620 0.15 427.69 117.14 310.55 625 0.15 428.10 118.07 310.02 630 0.15 428.46 119.01 309.45 635 0.14 428.77 119.95 308.83 640 0.14 429.04 120.89 308.15 645 0.14 429.26 121.82 307.43 650 0.14 429.42 122.76 306.67 655 0.14 429.54 123.70 305.85 660 0.14 429.62 124.63 304.98 665 0.14 429.64 125.57 304.07 670 0.14 429.61 126.51 303.10 675 0.14 429.54 127.44 302.09 680 0.14 429.41 128.38 301.03 685 0.13 429.24 129.32 299.92 690 0.13 429.02 130.26 298.76 695 0.13 428.75 131.19 297.56 700 0.13 428.43 132.13 296.30 705 0.13 428.07 133.07 295.00 710 0.13 427.65 134.00 293.65 715 0.13 427.19 134.94 292.25 720 0.13 426.68 135.88 290.80 725 0.13 428.56 136.82 291.74 730 0.13 430.43 137.75 292.67 735 0.13 432.28 138.69 293.59 740 0.13 434.12 139.63 294.49 745 0.13 435.94 140.56 295.37 750 0.13 437.75 141.50 296.25 755 0.12 439.54 142.44 297.10 760 0.12 441.32 143.38 297.94 765 0.12 443.08 144.31 298.77 770 0.12 444.83 145.25 299.58 775 0.12 446.56 146.19 300.38 780 0.12 448.28 147.12 301.16 785 0.12 449.98 148.06 301.92 790 0.12 451.67 149.00 302.67 795 0.12 453.35 149.94 303.41 800 0.12 455.01 150.87 304.13 805 0.12 456.65 151.81 304.84 810 0.12 458.28 152.75 305.53 815 0.12 459.89 153.68 306.21 820 0.12 461.49 154.62 306.87 825 0.12 463.08 155.56 307.52 830 0.12 464.64 156.49 308.15 835 0.12 466.20 157.43 308.77 840 0.12 467.74 158.37 309.37 845 0.12 469.26 159.31 309.96 850 0.12 470.77 160.24 310.53 855 0.12 472.27 161.18 311.09 860 0.12 473.75 162.12 311.63 865 0.12 475.21 163.05 312.16 870 0.12 476.66 163.99 312.67 875 0.12 478.10 164.93 313.17 880 0.12 479.52 165.87 313.65 885 0.12 480.92 166.80 314.12 890 0.12 482.31 167.74 314.57 895 0.12 483.69 168.68 315.01 900 0.12 485.05 169.61 315.44 905 0.12 486.40 170.55 315.85 910 0.11 487.73 171.49 316.24 915 0.11 489.04 172.43 316.62 920 0.11 490.34 173.36 316.98 925 0.11 491.63 174.30 317.33 930 0.11 492.90 175.24 317.66 935 0.11 494.16 176.17 317.98 940 0.11 495.40 177.11 318.29 945 0.11 496.63 178.05 318.58 950 0.11 497.84 178.99 318.85 955 0.11 499.03 179.92 319.11 960 0.11 500.22 180.86 319.36 965 0.11 501.38 181.80 319.59 970 0.11 502.53 182.73 319.80 975 0.11 503.67 183.67 320.00 980 0.11 504.79 184.61 320.19 985 0.11 505.90 185.54 320.36 990 0.11 506.99 186.48 320.51 995 0.11 508.07 187.42 320.65 1000 0.11 509.13 188.36 320.78 1005 0.11 510.18 189.29 320.89 1010 0.11 511.21 190.23 320.98 1015 0.11 512.23 191.17 321.06 1020 0.11 513.23 192.10 321.13 1025 0.11 514.22 193.04 321.18 1030 0.11 515.20 193.98 321.22 1035 0.11 516.15 194.92 321.24 1040 0.11 517.10 195.85 321.24 1045 0.11 518.03 196.79 321.24 1050 0.11 518.94 197.73 321.21 1055 0.11 519.84 198.66 321.17 1060 0.11 520.72 199.60 321.12 1065 0.10 521.59 200.54 321.05 1070 0.10 522.44 201.48 320.97 1075 0.10 523.28 202.41 320.87 1080 0.10 524.11 203.35 320.76 1085 0.10 524.92 204.29 320.63 1090 0.10 525.71 205.22 320.49 1095 0.10 526.49 206.16 320.33 1100 0.10 527.25 207.10 320.16 1105 0.10 528.00 208.03 319.97 1110 0.10 528.74 208.97 319.77 1115 0.10 529.46 209.91 319.55 1120 0.10 530.16 210.85 319.32 1125 0.10 530.85 211.78 319.07 1130 0.10 531.53 212.72 318.81 1135 0.10 532.19 213.66 318.53 1140 0.10 532.83 214.59 318.24 1145 0.10 533.46 215.53 317.93 1150 0.10 534.08 216.47 317.61 1155 0.10 534.68 217.41 317.27 1160 0.10 535.26 218.34 316.92 1165 0.10 535.83 219.28 316.55 1170 0.10 536.39 220.22 316.17 1175 0.10 536.93 221.15 315.78 1180 0.10 537.46 222.09 315.37 1185 0.10 537.97 223.03 314.94 1190 0.10 538.46 223.97 314.50 1195 0.10 538.95 224.90 314.04 1200 0.10 539.41 225.84 313.57 1205 0.10 539.86 226.78 313.09 1210 0.10 540.30 227.71 312.59 1215 0.10 540.72 228.65 312.07 1220 0.10 541.13 229.59 311.54 1225 0.09 541.52 230.53 310.99 1230 0.09 541.90 231.46 310.43 1235 0.09 542.26 232.40 309.86 1240 0.09 542.61 233.34 309.27 1245 0.09 542.94 234.27 308.66 1250 0.09 543.25 235.21 308.04 1255 0.09 543.56 236.15 307.41 1260 0.09 543.84 237.08 306.76 1265 0.09 544.12 238.02 306.10 1270 0.09 544.37 238.96 305.42 1275 0.09 544.62 239.90 304.72 1280 0.09 544.85 240.83 304.01 1285 0.09 545.06 241.77 303.29 1290 0.09 545.26 242.71 302.55 1295 0.09 545.44 243.64 301.79 1300 0.09 545.61 244.58 301.03 1305 0.09 545.76 245.52 300.24 1310 0.09 545.90 246.46 299.44 1315 0.09 546.02 247.39 298.63 1320 0.09 546.13 248.33 297.80 1325 0.09 546.22 249.27 296.96 1330 0.09 546.30 250.20 296.10 1335 0.09 546.37 251.14 295.23 1340 0.09 546.42 252.08 294.34 1345 0.09 546.45 253.02 293.43 1350 0.09 546.47 253.95 292.52 1355 0.09 546.47 254.89 291.58 1360 0.09 546.46 255.83 290.64 1365 0.09 546.44 256.76 289.67 1370 0.09 546.40 257.70 288.70 1375 0.09 546.34 258.64 287.70 1380 0.08 546.27 259.58 286.70 1385 0.08 546.19 260.51 285.67 1390 0.08 546.09 261.45 284.64 1395 0.08 545.97 262.39 283.58 1400 0.08 545.84 263.32 282.52 1405 0.08 545.70 264.26 281.44 1410 0.08 545.54 265.20 280.34 1415 0.08 545.36 266.13 279.23 1420 0.08 545.17 267.07 278.10 1425 0.08 544.97 268.01 276.96 1430 0.08 544.75 268.95 275.80 1435 0.08 544.51 269.88 274.63 1440 0.08 544.26 270.82 273.44 Maximum Difference 321.24 25 Year Storage Calculations ‐ Basin 15 (Pre) Rainfall Duration  (minutes) Intensity (inches/Hour)       EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference ft3  EQ 5‐4 C 0.370  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 7339.00 ft2 5 4.67 88.06 1.51 86.55 Tc 5 Minutes 10 3.41 128.61 2.27 126.33 Qa 0.005 ft3 15 2.78 157.27 3.03 154.24 P24(25)0.952 20 2.42 182.54 3.79 178.75 25 2.06 194.23 4.54 189.68 30 1.70 192.34 5.30 187.04 35 1.58 207.94 6.06 201.88 40 1.45 218.84 6.82 212.03 45 1.33 225.04 7.57 217.47 50 1.20 226.53 8.33 218.20 55 1.08 223.33 9.09 214.24 60 0.95 215.42 9.85 205.58 65 0.92 224.67 10.60 214.07 Storage Volume 61.60 70 0.88 232.58 11.36 221.22 75 0.85 239.16 12.12 227.04 80 0.81 244.39 12.88 231.51 85 0.77 248.28 13.63 234.65 90 0.74 250.84 14.39 236.45 95 0.70 252.05 15.15 236.91 100 0.67 251.93 15.91 236.03 105 0.63 250.47 16.66 233.81 110 0.60 247.67 17.42 230.25 115 0.56 243.53 18.18 225.35 120 0.53 238.05 18.94 219.12 125 0.51 241.49 19.69 221.80 130 0.50 244.41 20.45 223.96 135 0.48 246.81 21.21 225.60 140 0.47 248.69 21.96 226.72 145 0.46 250.05 22.72 227.33 150 0.44 250.89 23.48 227.41 155 0.43 251.22 24.24 226.98 160 0.42 251.03 24.99 226.03 165 0.40 250.31 25.75 224.56 170 0.39 249.08 26.51 222.58 175 0.37 247.34 27.27 220.07 180 0.36 245.07 28.02 217.04 185 0.36 248.79 28.78 220.01 190 0.35 252.35 29.54 222.81 195 0.35 255.75 30.30 225.45 200 0.34 258.97 31.05 227.92 205 0.34 262.03 31.81 230.22 210 0.33 264.92 32.57 232.36 215 0.33 267.65 33.33 234.32 220 0.33 270.21 34.08 236.13 225 0.32 272.60 34.84 237.76 230 0.32 274.83 35.60 239.23 235 0.31 276.89 36.36 240.53 240 0.31 278.78 37.11 241.67 245 0.30 280.51 37.87 242.64 250 0.30 282.07 38.63 243.44 255 0.29 283.46 39.38 244.08 260 0.29 284.69 40.14 244.55 265 0.29 285.75 40.90 244.85 270 0.28 286.65 41.66 244.99 275 0.28 287.37 42.41 244.96 280 0.27 287.94 43.17 244.76 285 0.27 288.33 43.93 244.40 290 0.26 288.56 44.69 243.87 295 0.26 288.62 45.44 243.17 300 0.25 288.51 46.20 242.31 305 0.25 288.24 46.96 241.28 310 0.25 287.80 47.72 240.09 315 0.24 287.20 48.47 238.72 320 0.24 286.43 49.23 237.20 325 0.23 285.49 49.99 235.50 330 0.23 284.38 50.75 233.64 335 0.22 283.11 51.50 231.61 340 0.22 281.67 52.26 229.41 345 0.22 280.07 53.02 227.05 350 0.21 278.30 53.78 224.52 355 0.21 276.36 54.53 221.83 360 0.20 274.26 55.29 218.97 365 0.20 276.63 56.05 220.59 370 0.20 278.97 56.81 222.16 375 0.20 281.27 57.56 223.70 380 0.20 283.52 58.32 225.20 385 0.20 285.74 59.08 226.66 390 0.20 287.92 59.83 228.09 395 0.19 290.06 60.59 229.47 400 0.19 292.16 61.35 230.81 405 0.19 294.22 62.11 232.11 410 0.19 296.24 62.86 233.38 415 0.19 298.23 63.62 234.60 420 0.19 300.17 64.38 235.79 425 0.19 302.07 65.14 236.94 430 0.19 303.94 65.89 238.04 435 0.19 305.76 66.65 239.11 440 0.19 307.55 67.41 240.14 445 0.18 309.29 68.17 241.13 450 0.18 311.00 68.92 242.08 455 0.18 312.67 69.68 242.99 460 0.18 314.30 70.44 243.86 465 0.18 315.89 71.20 244.69 470 0.18 317.44 71.95 245.48 475 0.18 318.95 72.71 246.24 480 0.18 320.42 73.47 246.95 485 0.18 321.85 74.23 247.63 490 0.17 323.25 74.98 248.26 495 0.17 324.60 75.74 248.86 500 0.17 325.91 76.50 249.42 505 0.17 327.19 77.26 249.93 510 0.17 328.43 78.01 250.41 515 0.17 329.62 78.77 250.85 520 0.17 330.78 79.53 251.25 525 0.17 331.90 80.28 251.61 530 0.17 332.98 81.04 251.93 535 0.17 334.02 81.80 252.22 540 0.16 335.02 82.56 252.46 545 0.16 335.98 83.31 252.66 550 0.16 336.90 84.07 252.83 555 0.16 337.78 84.83 252.95 560 0.16 338.62 85.59 253.04 565 0.16 339.43 86.34 253.08 570 0.16 340.19 87.10 253.09 575 0.16 340.92 87.86 253.06 580 0.16 341.60 88.62 252.99 585 0.16 342.25 89.37 252.88 590 0.15 342.86 90.13 252.73 595 0.15 343.43 90.89 252.54 600 0.15 343.95 91.65 252.31 605 0.15 344.44 92.40 252.04 610 0.15 344.89 93.16 251.73 615 0.15 345.30 93.92 251.39 620 0.15 345.68 94.68 251.00 625 0.15 346.01 95.43 250.58 630 0.15 346.30 96.19 250.11 635 0.14 346.56 96.95 249.61 640 0.14 346.77 97.70 249.07 645 0.14 346.95 98.46 248.48 650 0.14 347.08 99.22 247.86 655 0.14 347.18 99.98 247.20 660 0.14 347.24 100.73 246.50 665 0.14 347.25 101.49 245.76 670 0.14 347.23 102.25 244.98 675 0.14 347.17 103.01 244.16 680 0.14 347.07 103.76 243.31 685 0.13 346.93 104.52 242.41 690 0.13 346.75 105.28 241.48 695 0.13 346.54 106.04 240.50 700 0.13 346.28 106.79 239.49 705 0.13 345.98 107.55 238.43 710 0.13 345.65 108.31 237.34 715 0.13 345.27 109.07 236.21 720 0.13 344.86 109.82 235.04 725 0.13 346.38 110.58 235.80 730 0.13 347.89 111.34 236.55 735 0.13 349.39 112.10 237.29 740 0.13 350.87 112.85 238.02 745 0.13 352.35 113.61 238.74 750 0.13 353.81 114.37 239.44 755 0.12 355.26 115.13 240.13 760 0.12 356.69 115.88 240.81 765 0.12 358.12 116.64 241.48 770 0.12 359.53 117.40 242.13 775 0.12 360.93 118.15 242.78 780 0.12 362.32 118.91 243.41 785 0.12 363.70 119.67 244.03 790 0.12 365.06 120.43 244.64 795 0.12 366.42 121.18 245.23 800 0.12 367.76 121.94 245.81 805 0.12 369.09 122.70 246.39 810 0.12 370.40 123.46 246.94 815 0.12 371.71 124.21 247.49 820 0.12 373.00 124.97 248.03 825 0.12 374.28 125.73 248.55 830 0.12 375.55 126.49 249.06 835 0.12 376.80 127.24 249.56 840 0.12 378.05 128.00 250.05 845 0.12 379.28 128.76 250.52 850 0.12 380.50 129.52 250.98 855 0.12 381.71 130.27 251.44 860 0.12 382.91 131.03 251.87 865 0.12 384.09 131.79 252.30 870 0.12 385.26 132.55 252.72 875 0.12 386.42 133.30 253.12 880 0.12 387.57 134.06 253.51 885 0.12 388.70 134.82 253.89 890 0.12 389.83 135.58 254.25 895 0.12 390.94 136.33 254.61 900 0.12 392.04 137.09 254.95 905 0.12 393.13 137.85 255.28 910 0.11 394.20 138.60 255.60 915 0.11 395.27 139.36 255.91 920 0.11 396.32 140.12 256.20 925 0.11 397.36 140.88 256.48 930 0.11 398.39 141.63 256.75 935 0.11 399.40 142.39 257.01 940 0.11 400.40 143.15 257.26 945 0.11 401.40 143.91 257.49 950 0.11 402.38 144.66 257.71 955 0.11 403.34 145.42 257.92 960 0.11 404.30 146.18 258.12 965 0.11 405.24 146.94 258.30 970 0.11 406.17 147.69 258.48 975 0.11 407.09 148.45 258.64 980 0.11 408.00 149.21 258.79 985 0.11 408.89 149.97 258.93 990 0.11 409.78 150.72 259.05 995 0.11 410.65 151.48 259.17 1000 0.11 411.51 152.24 259.27 1005 0.11 412.35 153.00 259.36 1010 0.11 413.19 153.75 259.43 1015 0.11 414.01 154.51 259.50 1020 0.11 414.82 155.27 259.55 1025 0.11 415.62 156.03 259.59 1030 0.11 416.40 156.78 259.62 1035 0.11 417.18 157.54 259.64 1040 0.11 417.94 158.30 259.64 1045 0.11 418.69 159.05 259.64 1050 0.11 419.43 159.81 259.62 1055 0.11 420.16 160.57 259.59 1060 0.11 420.87 161.33 259.54 1065 0.10 421.57 162.08 259.49 1070 0.10 422.26 162.84 259.42 1075 0.10 422.94 163.60 259.34 1080 0.10 423.61 164.36 259.25 1085 0.10 424.26 165.11 259.15 1090 0.10 424.90 165.87 259.03 1095 0.10 425.53 166.63 258.90 1100 0.10 426.15 167.39 258.76 1105 0.10 426.76 168.14 258.61 1110 0.10 427.35 168.90 258.45 1115 0.10 427.93 169.66 258.27 1120 0.10 428.50 170.42 258.09 1125 0.10 429.06 171.17 257.89 1130 0.10 429.60 171.93 257.67 1135 0.10 430.14 172.69 257.45 1140 0.10 430.66 173.45 257.21 1145 0.10 431.17 174.20 256.97 1150 0.10 431.67 174.96 256.71 1155 0.10 432.15 175.72 256.43 1160 0.10 432.63 176.47 256.15 1165 0.10 433.09 177.23 255.85 1170 0.10 433.54 177.99 255.55 1175 0.10 433.97 178.75 255.23 1180 0.10 434.40 179.50 254.89 1185 0.10 434.81 180.26 254.55 1190 0.10 435.21 181.02 254.19 1195 0.10 435.60 181.78 253.82 1200 0.10 435.98 182.53 253.44 1205 0.10 436.34 183.29 253.05 1210 0.10 436.70 184.05 252.65 1215 0.10 437.04 184.81 252.23 1220 0.10 437.36 185.56 251.80 1225 0.09 437.68 186.32 251.36 1230 0.09 437.99 187.08 250.91 1235 0.09 438.28 187.84 250.44 1240 0.09 438.56 188.59 249.97 1245 0.09 438.83 189.35 249.48 1250 0.09 439.08 190.11 248.98 1255 0.09 439.33 190.87 248.46 1260 0.09 439.56 191.62 247.94 1265 0.09 439.78 192.38 247.40 1270 0.09 439.99 193.14 246.85 1275 0.09 440.19 193.90 246.29 1280 0.09 440.37 194.65 245.72 1285 0.09 440.54 195.41 245.13 1290 0.09 440.70 196.17 244.53 1295 0.09 440.85 196.92 243.92 1300 0.09 440.99 197.68 243.30 1305 0.09 441.11 198.44 242.67 1310 0.09 441.22 199.20 242.02 1315 0.09 441.32 199.95 241.37 1320 0.09 441.41 200.71 240.70 1325 0.09 441.48 201.47 240.01 1330 0.09 441.55 202.23 239.32 1335 0.09 441.60 202.98 238.62 1340 0.09 441.64 203.74 237.90 1345 0.09 441.67 204.50 237.17 1350 0.09 441.68 205.26 236.43 1355 0.09 441.69 206.01 235.67 1360 0.09 441.68 206.77 234.91 1365 0.09 441.66 207.53 234.13 1370 0.09 441.62 208.29 233.34 1375 0.09 441.58 209.04 232.54 1380 0.08 441.52 209.80 231.72 1385 0.08 441.45 210.56 230.89 1390 0.08 441.37 211.32 230.06 1395 0.08 441.28 212.07 229.21 1400 0.08 441.17 212.83 228.34 1405 0.08 441.06 213.59 227.47 1410 0.08 440.93 214.35 226.58 1415 0.08 440.79 215.10 225.68 1420 0.08 440.63 215.86 224.77 1425 0.08 440.47 216.62 223.85 1430 0.08 440.29 217.37 222.92 1435 0.08 440.10 218.13 221.97 1440 0.08 439.90 218.89 221.01 Maximum Difference 259.64 25 Year Storage Calculations ‐ Basin 16 (Developed) Rainfall Duration  (minutes) Intensity (inches/Hour)      EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference  ft3 EQ 5‐4 C 0.412  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 105220.00 ft2 5 4.67 1407.24 38.73 1368.51 Tc 11 Minutes 10 3.41 2055.12 50.83 2004.28 Qa 0.081 ft3 15 2.78 2513.15 62.94 2450.21 P24(25)0.952 20 2.42 2916.94 75.04 2841.90 25 2.06 3103.77 87.14 3016.63 30 1.70 3073.64 99.25 2974.39 35 1.58 3322.94 111.35 3211.59 40 1.45 3497.10 123.45 3373.65 45 1.33 3596.13 135.56 3460.57 50 1.20 3620.02 147.66 3472.36 55 1.08 3568.78 159.76 3409.02 60 0.95 3442.47 171.87 3270.61 65 0.92 3590.28 183.97 3406.31 70 0.88 3716.69 196.07 3520.62 75 0.85 3821.71 208.18 3613.53 80 0.81 3905.33 220.28 3685.05 85 0.77 3967.55 232.38 3735.17 90 0.74 4008.38 244.49 3763.90 95 0.70 4027.82 256.59 3771.23 100 0.67 4025.86 268.69 3757.17 105 0.63 4002.51 280.80 3721.71 110 0.60 3957.76 292.90 3664.86 115 0.56 3891.62 305.00 3586.61 120 0.53 3804.08 317.11 3486.97 125 0.51 3859.00 329.21 3529.79 130 0.50 3905.63 341.31 3564.32 135 0.48 3943.97 353.42 3590.56 140 0.47 3974.03 365.52 3608.51 145 0.46 3995.80 377.62 3618.18 150 0.44 4009.29 389.73 3619.56 155 0.43 4014.49 401.83 3612.66 160 0.42 4011.40 413.93 3597.46 165 0.40 4000.02 426.04 3573.99 170 0.39 3980.36 438.14 3542.22 175 0.37 3952.41 450.24 3502.17 180 0.36 3916.17 462.35 3453.83 185 0.36 3975.71 474.45 3501.26 190 0.35 4032.59 486.55 3546.04 195 0.35 4086.81 498.66 3588.15 200 0.34 4138.36 510.76 3627.60 205 0.34 4187.25 522.86 3664.39 210 0.33 4233.48 534.97 3698.51 215 0.33 4277.05 547.07 3729.98 220 0.33 4317.95 559.17 3758.78 225 0.32 4356.20 571.28 3784.92 230 0.32 4391.78 583.38 3808.40 235 0.31 4424.70 595.48 3829.22 240 0.31 4454.96 607.58 3847.37 245 0.30 4482.56 619.69 3862.87 250 0.30 4507.49 631.79 3875.70 255 0.29 4529.76 643.89 3885.87 260 0.29 4549.38 656.00 3893.38 265 0.29 4566.33 668.10 3898.22 270 0.28 4580.61 680.20 3900.41 275 0.28 4592.24 692.31 3899.93 280 0.27 4601.20 704.41 3896.79 285 0.27 4607.50 716.51 3890.99 290 0.26 4611.15 728.62 3882.53 295 0.26 4612.12 740.72 3871.40 300 0.25 4610.44 752.82 3857.62 305 0.25 4606.10 764.93 3841.17 310 0.25 4599.09 777.03 3822.06 315 0.24 4589.42 789.13 3800.29 320 0.24 4577.09 801.24 3775.85 325 0.23 4562.10 813.34 3748.76 330 0.23 4544.44 825.44 3719.00 335 0.22 4524.13 837.55 3686.58 340 0.22 4501.15 849.65 3651.50 345 0.22 4475.51 861.75 3613.75 350 0.21 4447.21 873.86 3573.35 355 0.21 4416.24 885.96 3530.28 360 0.20 4382.64 898.06 3484.58 365 0.20 4420.60 910.17 3510.43 370 0.20 4457.93 922.27 3535.66 375 0.20 4494.63 934.37 3560.25 380 0.20 4530.70 946.48 3584.22 385 0.20 4566.15 958.58 3607.57 390 0.20 4600.96 970.68 3630.28 395 0.19 4635.15 982.79 3652.36 400 0.19 4668.71 994.89 3673.82 405 0.19 4701.65 1006.99 3694.65 410 0.19 4733.95 1019.10 3714.86 415 0.19 4765.63 1031.20 3734.43 420 0.19 4796.68 1043.30 3753.38 425 0.19 4827.10 1055.41 3771.70 430 0.19 4856.90 1067.51 3789.39 435 0.19 4886.06 1079.61 3806.45 440 0.19 4914.60 1091.72 3822.89 445 0.18 4942.51 1103.82 3838.69 450 0.18 4969.80 1115.92 3853.87 455 0.18 4996.45 1128.03 3868.43 460 0.18 5022.48 1140.13 3882.35 465 0.18 5047.88 1152.23 3895.65 470 0.18 5072.65 1164.34 3908.32 475 0.18 5096.80 1176.44 3920.36 480 0.18 5120.31 1188.54 3931.77 485 0.18 5143.20 1200.65 3942.56 490 0.17 5165.46 1212.75 3952.72 495 0.17 5187.10 1224.85 3962.25 500 0.17 5208.10 1236.96 3971.15 505 0.17 5228.48 1249.06 3979.42 510 0.17 5248.23 1261.16 3987.07 515 0.17 5267.35 1273.27 3994.09 520 0.17 5285.85 1285.37 4000.48 525 0.17 5303.71 1297.47 4006.24 530 0.17 5320.95 1309.58 4011.38 535 0.17 5337.56 1321.68 4015.89 540 0.16 5353.55 1333.78 4019.77 545 0.16 5368.90 1345.89 4023.02 550 0.16 5383.63 1357.99 4025.64 555 0.16 5397.73 1370.09 4027.64 560 0.16 5411.20 1382.20 4029.01 565 0.16 5424.05 1394.30 4029.75 570 0.16 5436.26 1406.40 4029.86 575 0.16 5447.85 1418.50 4029.35 580 0.16 5458.81 1430.61 4028.21 585 0.16 5469.15 1442.71 4026.44 590 0.15 5478.85 1454.81 4024.04 595 0.15 5487.93 1466.92 4021.01 600 0.15 5496.38 1479.02 4017.36 605 0.15 5504.20 1491.12 4013.08 610 0.15 5511.40 1503.23 4008.17 615 0.15 5517.96 1515.33 4002.63 620 0.15 5523.90 1527.43 3996.47 625 0.15 5529.21 1539.54 3989.67 630 0.15 5533.90 1551.64 3982.25 635 0.14 5537.95 1563.74 3974.21 640 0.14 5541.38 1575.85 3965.53 645 0.14 5544.18 1587.95 3956.23 650 0.14 5546.35 1600.05 3946.30 655 0.14 5547.89 1612.16 3935.74 660 0.14 5548.81 1624.26 3924.55 665 0.14 5549.10 1636.36 3912.73 670 0.14 5548.76 1648.47 3900.29 675 0.14 5547.79 1660.57 3887.22 680 0.14 5546.20 1672.67 3873.52 685 0.13 5543.98 1684.78 3859.20 690 0.13 5541.12 1696.88 3844.24 695 0.13 5537.65 1708.98 3828.66 700 0.13 5533.54 1721.09 3812.45 705 0.13 5528.81 1733.19 3795.62 710 0.13 5523.45 1745.29 3778.15 715 0.13 5517.46 1757.40 3760.06 720 0.13 5510.85 1769.50 3741.35 725 0.13 5535.16 1781.60 3753.56 730 0.13 5559.28 1793.71 3765.57 735 0.13 5583.21 1805.81 3777.40 740 0.13 5606.94 1817.91 3789.03 745 0.13 5630.48 1830.02 3800.47 750 0.13 5653.83 1842.12 3811.71 755 0.12 5676.99 1854.22 3822.77 760 0.12 5699.96 1866.33 3833.63 765 0.12 5722.73 1878.43 3844.30 770 0.12 5745.31 1890.53 3854.77 775 0.12 5767.69 1902.64 3865.06 780 0.12 5789.89 1914.74 3875.15 785 0.12 5811.89 1926.84 3885.05 790 0.12 5833.70 1938.95 3894.75 795 0.12 5855.32 1951.05 3904.27 800 0.12 5876.74 1963.15 3913.59 805 0.12 5897.97 1975.26 3922.72 810 0.12 5919.01 1987.36 3931.65 815 0.12 5939.86 1999.46 3940.40 820 0.12 5960.51 2011.57 3948.95 825 0.12 5980.97 2023.67 3957.30 830 0.12 6001.24 2035.77 3965.47 835 0.12 6021.32 2047.88 3973.44 840 0.12 6041.20 2059.98 3981.22 845 0.12 6060.89 2072.08 3988.81 850 0.12 6080.39 2084.19 3996.21 855 0.12 6099.70 2096.29 4003.41 860 0.12 6118.81 2108.39 4010.42 865 0.12 6137.74 2120.50 4017.24 870 0.12 6156.46 2132.60 4023.87 875 0.12 6175.00 2144.70 4030.30 880 0.12 6193.35 2156.81 4036.54 885 0.12 6211.50 2168.91 4042.59 890 0.12 6229.46 2181.01 4048.44 895 0.12 6247.22 2193.12 4054.11 900 0.12 6264.80 2205.22 4059.58 905 0.12 6282.18 2217.32 4064.86 910 0.11 6299.37 2229.43 4069.94 915 0.11 6316.36 2241.53 4074.83 920 0.11 6333.17 2253.63 4079.53 925 0.11 6349.78 2265.73 4084.04 930 0.11 6366.20 2277.84 4088.36 935 0.11 6382.42 2289.94 4092.48 940 0.11 6398.46 2302.04 4096.41 945 0.11 6414.30 2314.15 4100.15 950 0.11 6429.95 2326.25 4103.69 955 0.11 6445.40 2338.35 4107.05 960 0.11 6460.66 2350.46 4110.21 965 0.11 6475.74 2362.56 4113.17 970 0.11 6490.61 2374.66 4115.95 975 0.11 6505.30 2386.77 4118.53 980 0.11 6519.79 2398.87 4120.92 985 0.11 6534.10 2410.97 4123.12 990 0.11 6548.20 2423.08 4125.13 995 0.11 6562.12 2435.18 4126.94 1000 0.11 6575.84 2447.28 4128.56 1005 0.11 6589.37 2459.39 4129.99 1010 0.11 6602.71 2471.49 4131.22 1015 0.11 6615.86 2483.59 4132.26 1020 0.11 6628.81 2495.70 4133.11 1025 0.11 6641.57 2507.80 4133.77 1030 0.11 6654.14 2519.90 4134.24 1035 0.11 6666.52 2532.01 4134.51 1040 0.11 6678.70 2544.11 4134.59 1045 0.11 6690.69 2556.21 4134.48 1050 0.11 6702.49 2568.32 4134.17 1055 0.11 6714.09 2580.42 4133.67 1060 0.11 6725.51 2592.52 4132.98 1065 0.10 6736.73 2604.63 4132.10 1070 0.10 6747.76 2616.73 4131.03 1075 0.10 6758.59 2628.83 4129.76 1080 0.10 6769.23 2640.94 4128.30 1085 0.10 6779.69 2653.04 4126.65 1090 0.10 6789.94 2665.14 4124.80 1095 0.10 6800.01 2677.25 4122.76 1100 0.10 6809.88 2689.35 4120.53 1105 0.10 6819.56 2701.45 4118.11 1110 0.10 6829.05 2713.56 4115.49 1115 0.10 6838.35 2725.66 4112.69 1120 0.10 6847.45 2737.76 4109.69 1125 0.10 6856.36 2749.87 4106.49 1130 0.10 6865.08 2761.97 4103.11 1135 0.10 6873.60 2774.07 4099.53 1140 0.10 6881.94 2786.18 4095.76 1145 0.10 6890.08 2798.28 4091.80 1150 0.10 6898.02 2810.38 4087.64 1155 0.10 6905.78 2822.49 4083.29 1160 0.10 6913.34 2834.59 4078.75 1165 0.10 6920.71 2846.69 4074.02 1170 0.10 6927.89 2858.80 4069.09 1175 0.10 6934.87 2870.90 4063.98 1180 0.10 6941.67 2883.00 4058.66 1185 0.10 6948.27 2895.11 4053.16 1190 0.10 6954.68 2907.21 4047.47 1195 0.10 6960.89 2919.31 4041.58 1200 0.10 6966.91 2931.42 4035.50 1205 0.10 6972.74 2943.52 4029.22 1210 0.10 6978.38 2955.62 4022.76 1215 0.10 6983.83 2967.73 4016.10 1220 0.10 6989.08 2979.83 4009.25 1225 0.09 6994.14 2991.93 4002.21 1230 0.09 6999.01 3004.04 3994.97 1235 0.09 7003.68 3016.14 3987.54 1240 0.09 7008.16 3028.24 3979.92 1245 0.09 7012.45 3040.35 3972.11 1250 0.09 7016.55 3052.45 3964.10 1255 0.09 7020.46 3064.55 3955.90 1260 0.09 7024.17 3076.66 3947.51 1265 0.09 7027.69 3088.76 3938.93 1270 0.09 7031.01 3100.86 3930.15 1275 0.09 7034.15 3112.96 3921.18 1280 0.09 7037.09 3125.07 3912.02 1285 0.09 7039.84 3137.17 3902.67 1290 0.09 7042.40 3149.27 3893.12 1295 0.09 7044.76 3161.38 3883.39 1300 0.09 7046.94 3173.48 3873.45 1305 0.09 7048.92 3185.58 3863.33 1310 0.09 7050.70 3197.69 3853.01 1315 0.09 7052.30 3209.79 3842.51 1320 0.09 7053.70 3221.89 3831.80 1325 0.09 7054.91 3234.00 3820.91 1330 0.09 7055.93 3246.10 3809.82 1335 0.09 7056.75 3258.20 3798.55 1340 0.09 7057.38 3270.31 3787.07 1345 0.09 7057.82 3282.41 3775.41 1350 0.09 7058.07 3294.51 3763.55 1355 0.09 7058.12 3306.62 3751.51 1360 0.09 7057.99 3318.72 3739.26 1365 0.09 7057.65 3330.82 3726.83 1370 0.09 7057.13 3342.93 3714.20 1375 0.09 7056.42 3355.03 3701.39 1380 0.08 7055.51 3367.13 3688.37 1385 0.08 7054.41 3379.24 3675.17 1390 0.08 7053.11 3391.34 3661.77 1395 0.08 7051.63 3403.44 3648.18 1400 0.08 7049.95 3415.55 3634.40 1405 0.08 7048.08 3427.65 3620.43 1410 0.08 7046.02 3439.75 3606.26 1415 0.08 7043.76 3451.86 3591.90 1420 0.08 7041.31 3463.96 3577.35 1425 0.08 7038.67 3476.06 3562.61 1430 0.08 7035.84 3488.17 3547.67 1435 0.08 7032.81 3500.27 3532.54 1440 0.08 7029.59 3512.37 3517.21 Maximum Difference 4134.59 25 Year Storage Calculations ‐ Basin 16 (Pre) Rainfall Duration  (minutes) Intensity (inches/Hour)       EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference ft3  EQ 5‐4 C 0.370  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 105220.00 ft2 5 4.67 1262.57 34.75 1227.82 Tc 11 Minutes 10 3.41 1843.83 45.61 1798.23 Qa 0.072 ft3 15 2.78 2254.78 56.47 2198.31 P24(25)0.952 20 2.42 2617.06 67.33 2549.73 25 2.06 2784.68 78.18 2706.49 30 1.70 2757.64 89.04 2668.60 35 1.58 2981.31 99.90 2881.41 40 1.45 3137.57 110.76 3026.81 45 1.33 3226.42 121.62 3104.80 50 1.20 3247.85 132.48 3115.37 55 1.08 3201.88 143.34 3058.54 60 0.95 3088.56 154.20 2934.36 65 0.92 3221.17 165.06 3056.11 Storage Volume 425.07 70 0.88 3334.58 175.92 3158.67 75 0.85 3428.80 186.77 3242.03 80 0.81 3503.83 197.63 3306.19 85 0.77 3559.65 208.49 3351.16 90 0.74 3596.29 219.35 3376.94 95 0.70 3613.73 230.21 3383.52 100 0.67 3611.97 241.07 3370.90 105 0.63 3591.02 251.93 3339.09 110 0.60 3550.87 262.79 3288.08 115 0.56 3491.52 273.65 3217.88 120 0.53 3412.99 284.50 3128.48 125 0.51 3462.26 295.36 3166.89 130 0.50 3504.10 306.22 3197.87 135 0.48 3538.50 317.08 3221.42 140 0.47 3565.47 327.94 3237.53 145 0.46 3585.00 338.80 3246.20 150 0.44 3597.10 349.66 3247.44 155 0.43 3601.76 360.52 3241.25 160 0.42 3598.99 371.38 3227.62 165 0.40 3588.79 382.24 3206.55 170 0.39 3571.14 393.09 3178.05 175 0.37 3546.07 403.95 3142.12 180 0.36 3513.56 414.81 3098.75 185 0.36 3566.98 425.67 3141.31 190 0.35 3618.01 436.53 3181.48 195 0.35 3666.65 447.39 3219.26 200 0.34 3712.90 458.25 3254.65 205 0.34 3756.77 469.11 3287.66 210 0.33 3798.24 479.97 3318.28 215 0.33 3837.33 490.83 3346.51 220 0.33 3874.03 501.68 3372.35 225 0.32 3908.34 512.54 3395.80 230 0.32 3940.27 523.40 3416.87 235 0.31 3969.80 534.26 3435.54 240 0.31 3996.95 545.12 3451.83 245 0.30 4021.71 555.98 3465.73 250 0.30 4044.08 566.84 3477.25 255 0.29 4064.07 577.70 3486.37 260 0.29 4081.66 588.56 3493.11 265 0.29 4096.87 599.41 3497.45 270 0.28 4109.69 610.27 3499.41 275 0.28 4120.12 621.13 3498.98 280 0.27 4128.16 631.99 3496.17 285 0.27 4133.81 642.85 3490.96 290 0.26 4137.08 653.71 3483.37 295 0.26 4137.96 664.57 3473.39 300 0.25 4136.45 675.43 3461.02 305 0.25 4132.55 686.29 3446.26 310 0.25 4126.26 697.15 3429.12 315 0.24 4117.59 708.00 3409.58 320 0.24 4106.53 718.86 3387.66 325 0.23 4093.07 729.72 3363.35 330 0.23 4077.24 740.58 3336.65 335 0.22 4059.01 751.44 3307.57 340 0.22 4038.39 762.30 3276.09 345 0.22 4015.39 773.16 3242.23 350 0.21 3990.00 784.02 3205.98 355 0.21 3962.22 794.88 3167.34 360 0.20 3932.07 805.74 3126.34 365 0.20 3966.13 816.59 3149.53 370 0.20 3999.62 827.45 3172.16 375 0.20 4032.54 838.31 3194.23 380 0.20 4064.91 849.17 3215.74 385 0.20 4096.71 860.03 3236.68 390 0.20 4127.94 870.89 3257.06 395 0.19 4158.62 881.75 3276.87 400 0.19 4188.73 892.61 3296.12 405 0.19 4218.28 903.47 3314.81 410 0.19 4247.26 914.32 3332.94 415 0.19 4275.68 925.18 3350.50 420 0.19 4303.54 936.04 3367.50 425 0.19 4330.84 946.90 3383.93 430 0.19 4357.57 957.76 3399.81 435 0.19 4383.74 968.62 3415.12 440 0.19 4409.34 979.48 3429.86 445 0.18 4434.38 990.34 3444.04 450 0.18 4458.86 1001.20 3457.66 455 0.18 4482.78 1012.06 3470.72 460 0.18 4506.13 1022.91 3483.21 465 0.18 4528.92 1033.77 3495.14 470 0.18 4551.14 1044.63 3506.51 475 0.18 4572.80 1055.49 3517.31 480 0.18 4593.90 1066.35 3527.55 485 0.18 4614.44 1077.21 3537.23 490 0.17 4634.41 1088.07 3546.34 495 0.17 4653.82 1098.93 3554.89 500 0.17 4672.67 1109.79 3562.88 505 0.17 4690.95 1120.65 3570.30 510 0.17 4708.67 1131.50 3577.16 515 0.17 4725.83 1142.36 3583.46 520 0.17 4742.42 1153.22 3589.20 525 0.17 4758.45 1164.08 3594.37 530 0.17 4773.91 1174.94 3598.97 535 0.17 4788.82 1185.80 3603.02 540 0.16 4803.16 1196.66 3606.50 545 0.16 4816.93 1207.52 3609.42 550 0.16 4830.15 1218.38 3611.77 555 0.16 4842.80 1229.23 3613.56 560 0.16 4854.89 1240.09 3614.79 565 0.16 4866.41 1250.95 3615.46 570 0.16 4877.37 1261.81 3615.56 575 0.16 4887.77 1272.67 3615.10 580 0.16 4897.60 1283.53 3614.07 585 0.16 4906.87 1294.39 3612.48 590 0.15 4915.58 1305.25 3610.33 595 0.15 4923.72 1316.11 3607.62 600 0.15 4931.31 1326.97 3604.34 605 0.15 4938.32 1337.82 3600.50 610 0.15 4944.78 1348.68 3596.09 615 0.15 4950.67 1359.54 3591.13 620 0.15 4956.00 1370.40 3585.60 625 0.15 4960.76 1381.26 3579.50 630 0.15 4964.96 1392.12 3572.84 635 0.14 4968.60 1402.98 3565.62 640 0.14 4971.68 1413.84 3557.84 645 0.14 4974.19 1424.70 3549.49 650 0.14 4976.14 1435.56 3540.58 655 0.14 4977.52 1446.41 3531.11 660 0.14 4978.35 1457.27 3521.07 665 0.14 4978.60 1468.13 3510.47 670 0.14 4978.30 1478.99 3499.31 675 0.14 4977.43 1489.85 3487.58 680 0.14 4976.00 1500.71 3475.29 685 0.13 4974.01 1511.57 3462.44 690 0.13 4971.45 1522.43 3449.02 695 0.13 4968.33 1533.29 3435.04 700 0.13 4964.65 1544.14 3420.50 705 0.13 4960.40 1555.00 3405.40 710 0.13 4955.59 1565.86 3389.73 715 0.13 4950.22 1576.72 3373.49 720 0.13 4944.29 1587.58 3356.71 725 0.13 4966.10 1598.44 3367.66 730 0.13 4987.74 1609.30 3378.44 735 0.13 5009.21 1620.16 3389.05 740 0.13 5030.50 1631.02 3399.49 745 0.13 5051.62 1641.88 3409.75 750 0.13 5072.57 1652.73 3419.84 755 0.12 5093.35 1663.59 3429.76 760 0.12 5113.95 1674.45 3439.50 765 0.12 5134.38 1685.31 3449.07 770 0.12 5154.64 1696.17 3458.47 775 0.12 5174.73 1707.03 3467.70 780 0.12 5194.64 1717.89 3476.75 785 0.12 5214.38 1728.75 3485.63 790 0.12 5233.95 1739.61 3494.34 795 0.12 5253.34 1750.47 3502.87 800 0.12 5272.56 1761.32 3511.24 805 0.12 5291.61 1772.18 3519.43 810 0.12 5310.49 1783.04 3527.44 815 0.12 5329.19 1793.90 3535.29 820 0.12 5347.72 1804.76 3542.96 825 0.12 5366.08 1815.62 3550.46 830 0.12 5384.26 1826.48 3557.79 835 0.12 5402.28 1837.34 3564.94 840 0.12 5420.12 1848.20 3571.92 845 0.12 5437.78 1859.05 3578.73 850 0.12 5455.28 1869.91 3585.36 855 0.12 5472.60 1880.77 3591.83 860 0.12 5489.75 1891.63 3598.12 865 0.12 5506.72 1902.49 3604.23 870 0.12 5523.53 1913.35 3610.18 875 0.12 5540.16 1924.21 3615.95 880 0.12 5556.62 1935.07 3621.55 885 0.12 5572.90 1945.93 3626.98 890 0.12 5589.01 1956.79 3632.23 895 0.12 5604.95 1967.64 3637.31 900 0.12 5620.72 1978.50 3642.22 905 0.12 5636.32 1989.36 3646.95 910 0.11 5651.74 2000.22 3651.52 915 0.11 5666.99 2011.08 3655.91 920 0.11 5682.06 2021.94 3660.12 925 0.11 5696.97 2032.80 3664.17 930 0.11 5711.70 2043.66 3668.04 935 0.11 5726.25 2054.52 3671.74 940 0.11 5740.64 2065.38 3675.27 945 0.11 5754.85 2076.23 3678.62 950 0.11 5768.89 2087.09 3681.80 955 0.11 5782.76 2097.95 3684.81 960 0.11 5796.45 2108.81 3687.64 965 0.11 5809.98 2119.67 3690.31 970 0.11 5823.32 2130.53 3692.80 975 0.11 5836.50 2141.39 3695.11 980 0.11 5849.50 2152.25 3697.26 985 0.11 5862.33 2163.11 3699.23 990 0.11 5874.99 2173.96 3701.03 995 0.11 5887.48 2184.82 3702.65 1000 0.11 5899.79 2195.68 3704.11 1005 0.11 5911.93 2206.54 3705.39 1010 0.11 5923.90 2217.40 3706.50 1015 0.11 5935.69 2228.26 3707.43 1020 0.11 5947.31 2239.12 3708.19 1025 0.11 5958.76 2249.98 3708.78 1030 0.11 5970.04 2260.84 3709.20 1035 0.11 5981.14 2271.70 3709.45 1040 0.11 5992.07 2282.55 3709.52 1045 0.11 6002.83 2293.41 3709.42 1050 0.11 6013.42 2304.27 3709.14 1055 0.11 6023.83 2315.13 3708.70 1060 0.11 6034.07 2325.99 3708.08 1065 0.10 6044.14 2336.85 3707.29 1070 0.10 6054.03 2347.71 3706.32 1075 0.10 6063.75 2358.57 3705.18 1080 0.10 6073.30 2369.43 3703.87 1085 0.10 6082.68 2380.29 3702.39 1090 0.10 6091.88 2391.14 3700.74 1095 0.10 6100.91 2402.00 3698.91 1100 0.10 6109.77 2412.86 3696.91 1105 0.10 6118.45 2423.72 3694.73 1110 0.10 6126.97 2434.58 3692.39 1115 0.10 6135.31 2445.44 3689.87 1120 0.10 6143.47 2456.30 3687.18 1125 0.10 6151.47 2467.16 3684.31 1130 0.10 6159.29 2478.02 3681.27 1135 0.10 6166.94 2488.87 3678.06 1140 0.10 6174.41 2499.73 3674.68 1145 0.10 6181.72 2510.59 3671.12 1150 0.10 6188.85 2521.45 3667.40 1155 0.10 6195.81 2532.31 3663.50 1160 0.10 6202.59 2543.17 3659.42 1165 0.10 6209.20 2554.03 3655.18 1170 0.10 6215.64 2564.89 3650.76 1175 0.10 6221.91 2575.75 3646.16 1180 0.10 6228.01 2586.61 3641.40 1185 0.10 6233.93 2597.46 3636.46 1190 0.10 6239.68 2608.32 3631.35 1195 0.10 6245.25 2619.18 3626.07 1200 0.10 6250.66 2630.04 3620.61 1205 0.10 6255.89 2640.90 3614.99 1210 0.10 6260.94 2651.76 3609.18 1215 0.10 6265.83 2662.62 3603.21 1220 0.10 6270.54 2673.48 3597.06 1225 0.09 6275.08 2684.34 3590.75 1230 0.09 6279.45 2695.20 3584.25 1235 0.09 6283.64 2706.05 3577.59 1240 0.09 6287.66 2716.91 3570.75 1245 0.09 6291.51 2727.77 3563.74 1250 0.09 6295.19 2738.63 3556.56 1255 0.09 6298.69 2749.49 3549.20 1260 0.09 6302.02 2760.35 3541.67 1265 0.09 6305.18 2771.21 3533.97 1270 0.09 6308.17 2782.07 3526.10 1275 0.09 6310.98 2792.93 3518.05 1280 0.09 6313.62 2803.78 3509.83 1285 0.09 6316.09 2814.64 3501.44 1290 0.09 6318.38 2825.50 3492.88 1295 0.09 6320.50 2836.36 3484.14 1300 0.09 6322.45 2847.22 3475.23 1305 0.09 6324.23 2858.08 3466.15 1310 0.09 6325.83 2868.94 3456.89 1315 0.09 6327.26 2879.80 3447.46 1320 0.09 6328.52 2890.66 3437.86 1325 0.09 6329.60 2901.52 3428.09 1330 0.09 6330.52 2912.37 3418.14 1335 0.09 6331.26 2923.23 3408.02 1340 0.09 6331.82 2934.09 3397.73 1345 0.09 6332.22 2944.95 3387.27 1350 0.09 6332.44 2955.81 3376.63 1355 0.09 6332.49 2966.67 3365.82 1360 0.09 6332.36 2977.53 3354.84 1365 0.09 6332.07 2988.39 3343.68 1370 0.09 6331.60 2999.25 3332.35 1375 0.09 6330.96 3010.11 3320.85 1380 0.08 6330.14 3020.96 3309.18 1385 0.08 6329.15 3031.82 3297.33 1390 0.08 6327.99 3042.68 3285.31 1395 0.08 6326.66 3053.54 3273.12 1400 0.08 6325.16 3064.40 3260.76 1405 0.08 6323.48 3075.26 3248.22 1410 0.08 6321.63 3086.12 3235.51 1415 0.08 6319.60 3096.98 3222.63 1420 0.08 6317.41 3107.84 3209.57 1425 0.08 6315.04 3118.69 3196.34 1430 0.08 6312.49 3129.55 3182.94 1435 0.08 6309.78 3140.41 3169.37 1440 0.08 6306.89 3151.27 3155.62 Maximum Difference 3709.52 25 Year Storage Calculations ‐ Basin 17 (Developed) Rainfall Duration  (minutes) Intensity (inches/Hour)      EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference  ft3 EQ 5‐4 C 0.393  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 276449.00 ft2 5 4.67 3521.99 187.81 3334.18 Tc 26 Minutes 10 3.41 5143.46 218.10 4925.36 Qa 0.202 ft3 15 2.78 6289.80 248.39 6041.41 P24(25)0.952 20 2.42 7300.39 278.68 7021.71 25 2.06 7767.98 308.97 7459.00 30 1.70 7692.56 339.27 7353.29 35 1.58 8316.49 369.56 7946.94 40 1.45 8752.38 399.85 8352.54 45 1.33 9000.23 430.14 8570.09 50 1.20 9060.03 460.43 8599.59 55 1.08 8931.78 490.72 8441.06 60 0.95 8615.67 521.01 8094.65 65 0.92 8985.59 551.31 8434.28 70 0.88 9301.96 581.60 8720.37 75 0.85 9564.79 611.89 8952.90 80 0.81 9774.08 642.18 9131.90 85 0.77 9929.81 672.47 9257.34 90 0.74 10032.00 702.76 9329.24 95 0.70 10080.65 733.06 9347.59 100 0.67 10075.75 763.35 9312.40 105 0.63 10017.30 793.64 9223.66 110 0.60 9905.30 823.93 9081.37 115 0.56 9739.76 854.22 8885.54 120 0.53 9520.67 884.51 8636.16 125 0.51 9658.12 914.81 8743.32 130 0.50 9774.83 945.10 8829.73 135 0.48 9870.80 975.39 8895.41 140 0.47 9946.03 1005.68 8940.35 145 0.46 10000.52 1035.97 8964.55 150 0.44 10034.27 1066.26 8968.00 155 0.43 10047.28 1096.55 8950.72 160 0.42 10039.54 1126.85 8912.70 165 0.40 10011.07 1157.14 8853.94 170 0.39 9961.87 1187.43 8774.44 175 0.37 9891.92 1217.72 8674.20 180 0.36 9801.23 1248.01 8553.21 185 0.36 9950.24 1278.30 8671.93 190 0.35 10092.59 1308.60 8783.99 195 0.35 10228.27 1338.89 8889.39 200 0.34 10357.30 1369.18 8988.12 205 0.34 10479.66 1399.47 9080.19 210 0.33 10595.36 1429.76 9165.60 215 0.33 10704.40 1460.05 9244.35 220 0.33 10806.78 1490.34 9316.44 225 0.32 10902.50 1520.64 9381.86 230 0.32 10991.55 1550.93 9440.62 235 0.31 11073.94 1581.22 9492.72 240 0.31 11149.67 1611.51 9538.16 245 0.30 11218.74 1641.80 9576.94 250 0.30 11281.15 1672.09 9609.05 255 0.29 11336.89 1702.39 9634.51 260 0.29 11385.97 1732.68 9653.30 265 0.29 11428.39 1762.97 9665.43 270 0.28 11464.15 1793.26 9670.89 275 0.28 11493.25 1823.55 9669.70 280 0.27 11515.68 1853.84 9661.84 285 0.27 11531.46 1884.13 9647.32 290 0.26 11540.57 1914.43 9626.14 295 0.26 11543.02 1944.72 9598.30 300 0.25 11538.80 1975.01 9563.79 305 0.25 11527.93 2005.30 9522.63 310 0.25 11510.39 2035.59 9474.80 315 0.24 11486.19 2065.88 9420.31 320 0.24 11455.33 2096.18 9359.16 325 0.23 11417.81 2126.47 9291.34 330 0.23 11373.63 2156.76 9216.87 335 0.22 11322.78 2187.05 9135.73 340 0.22 11265.27 2217.34 9047.93 345 0.22 11201.10 2247.63 8953.47 350 0.21 11130.27 2277.93 8852.34 355 0.21 11052.78 2308.22 8744.56 360 0.20 10968.69 2338.51 8630.18 365 0.20 11063.68 2368.80 8694.88 370 0.20 11157.10 2399.09 8758.01 375 0.20 11248.95 2429.38 8819.57 380 0.20 11339.23 2459.67 8879.56 385 0.20 11427.94 2489.97 8937.98 390 0.20 11515.08 2520.26 8994.82 395 0.19 11600.65 2550.55 9050.10 400 0.19 11684.65 2580.84 9103.80 405 0.19 11767.07 2611.13 9155.94 410 0.19 11847.92 2641.42 9206.50 415 0.19 11927.21 2671.72 9255.49 420 0.19 12004.92 2702.01 9302.91 425 0.19 12081.06 2732.30 9348.76 430 0.19 12155.62 2762.59 9393.03 435 0.19 12228.62 2792.88 9435.74 440 0.19 12300.05 2823.17 9476.87 445 0.18 12369.90 2853.46 9516.44 450 0.18 12438.19 2883.76 9554.43 455 0.18 12504.90 2914.05 9590.85 460 0.18 12570.04 2944.34 9625.70 465 0.18 12633.61 2974.63 9658.98 470 0.18 12695.61 3004.92 9690.69 475 0.18 12756.04 3035.21 9720.82 480 0.18 12814.89 3065.51 9749.39 485 0.18 12872.18 3095.80 9776.38 490 0.17 12927.89 3126.09 9801.80 495 0.17 12982.04 3156.38 9825.66 500 0.17 13034.61 3186.67 9847.94 505 0.17 13085.61 3216.96 9868.65 510 0.17 13135.04 3247.26 9887.78 515 0.17 13182.90 3277.55 9905.35 520 0.17 13229.18 3307.84 9921.35 525 0.17 13273.90 3338.13 9935.77 530 0.17 13317.04 3368.42 9948.62 535 0.17 13358.62 3398.71 9959.90 540 0.16 13398.62 3429.00 9969.62 545 0.16 13437.05 3459.30 9977.75 550 0.16 13473.91 3489.59 9984.32 555 0.16 13509.20 3519.88 9989.32 560 0.16 13542.92 3550.17 9992.75 565 0.16 13575.06 3580.46 9994.60 570 0.16 13605.64 3610.75 9994.88 575 0.16 13634.64 3641.05 9993.60 580 0.16 13662.07 3671.34 9990.74 585 0.16 13687.94 3701.63 9986.31 590 0.15 13712.23 3731.92 9980.31 595 0.15 13734.94 3762.21 9972.73 600 0.15 13756.09 3792.50 9963.59 605 0.15 13775.67 3822.79 9952.87 610 0.15 13793.67 3853.09 9940.59 615 0.15 13810.11 3883.38 9926.73 620 0.15 13824.97 3913.67 9911.30 625 0.15 13838.26 3943.96 9894.30 630 0.15 13849.98 3974.25 9875.73 635 0.14 13860.13 4004.54 9855.59 640 0.14 13868.71 4034.84 9833.88 645 0.14 13875.72 4065.13 9810.59 650 0.14 13881.16 4095.42 9785.74 655 0.14 13885.02 4125.71 9759.31 660 0.14 13887.31 4156.00 9731.31 665 0.14 13888.04 4186.29 9701.74 670 0.14 13887.19 4216.58 9670.60 675 0.14 13884.77 4246.88 9637.89 680 0.14 13880.78 4277.17 9603.61 685 0.13 13875.21 4307.46 9567.75 690 0.13 13868.08 4337.75 9530.33 695 0.13 13859.37 4368.04 9491.33 700 0.13 13849.10 4398.33 9450.76 705 0.13 13837.25 4428.63 9408.62 710 0.13 13823.83 4458.92 9364.91 715 0.13 13808.84 4489.21 9319.63 720 0.13 13792.31 4519.50 9272.81 725 0.13 13853.15 4549.79 9303.36 730 0.13 13913.52 4580.08 9333.44 735 0.13 13973.40 4610.38 9363.03 740 0.13 14032.81 4640.67 9392.14 745 0.13 14091.72 4670.96 9420.77 750 0.13 14150.16 4701.25 9448.91 755 0.12 14208.12 4731.54 9476.58 760 0.12 14265.59 4761.83 9503.76 765 0.12 14322.59 4792.12 9530.46 770 0.12 14379.10 4822.42 9556.68 775 0.12 14435.13 4852.71 9582.42 780 0.12 14490.67 4883.00 9607.67 785 0.12 14545.74 4913.29 9632.45 790 0.12 14600.32 4943.58 9656.74 795 0.12 14654.42 4973.87 9680.55 800 0.12 14708.04 5004.17 9703.88 805 0.12 14761.18 5034.46 9726.72 810 0.12 14813.84 5064.75 9749.09 815 0.12 14866.01 5095.04 9770.97 820 0.12 14917.70 5125.33 9792.37 825 0.12 14968.91 5155.62 9813.29 830 0.12 15019.64 5185.91 9833.73 835 0.12 15069.89 5216.21 9853.68 840 0.12 15119.65 5246.50 9873.15 845 0.12 15168.94 5276.79 9892.15 850 0.12 15217.74 5307.08 9910.66 855 0.12 15266.06 5337.37 9928.68 860 0.12 15313.89 5367.66 9946.23 865 0.12 15361.25 5397.96 9963.29 870 0.12 15408.12 5428.25 9979.88 875 0.12 15454.52 5458.54 9995.98 880 0.12 15500.43 5488.83 10011.60 885 0.12 15545.85 5519.12 10026.73 890 0.12 15590.80 5549.41 10041.39 895 0.12 15635.27 5579.71 10055.56 900 0.12 15679.25 5610.00 10069.25 905 0.12 15722.75 5640.29 10082.46 910 0.11 15765.77 5670.58 10095.19 915 0.11 15808.31 5700.87 10107.44 920 0.11 15850.36 5731.16 10119.20 925 0.11 15891.94 5761.45 10130.48 930 0.11 15933.03 5791.75 10141.28 935 0.11 15973.64 5822.04 10151.60 940 0.11 16013.77 5852.33 10161.44 945 0.11 16053.41 5882.62 10170.79 950 0.11 16092.58 5912.91 10179.67 955 0.11 16131.26 5943.20 10188.06 960 0.11 16169.46 5973.50 10195.97 965 0.11 16207.18 6003.79 10203.39 970 0.11 16244.42 6034.08 10210.34 975 0.11 16281.17 6064.37 10216.80 980 0.11 16317.45 6094.66 10222.79 985 0.11 16353.24 6124.95 10228.29 990 0.11 16388.55 6155.24 10233.31 995 0.11 16423.38 6185.54 10237.84 1000 0.11 16457.72 6215.83 10241.90 1005 0.11 16491.59 6246.12 10245.47 1010 0.11 16524.97 6276.41 10248.56 1015 0.11 16557.87 6306.70 10251.17 1020 0.11 16590.29 6336.99 10253.30 1025 0.11 16622.23 6367.29 10254.94 1030 0.11 16653.68 6397.58 10256.11 1035 0.11 16684.66 6427.87 10256.79 1040 0.11 16715.15 6458.16 10256.99 1045 0.11 16745.16 6488.45 10256.71 1050 0.11 16774.69 6518.74 10255.94 1055 0.11 16803.73 6549.03 10254.70 1060 0.11 16832.30 6579.33 10252.97 1065 0.10 16860.38 6609.62 10250.76 1070 0.10 16887.98 6639.91 10248.07 1075 0.10 16915.10 6670.20 10244.90 1080 0.10 16941.74 6700.49 10241.24 1085 0.10 16967.89 6730.78 10237.11 1090 0.10 16993.57 6761.08 10232.49 1095 0.10 17018.76 6791.37 10227.39 1100 0.10 17043.47 6821.66 10221.81 1105 0.10 17067.70 6851.95 10215.74 1110 0.10 17091.44 6882.24 10209.20 1115 0.10 17114.71 6912.53 10202.17 1120 0.10 17137.49 6942.83 10194.66 1125 0.10 17159.79 6973.12 10186.67 1130 0.10 17181.61 7003.41 10178.20 1135 0.10 17202.94 7033.70 10169.24 1140 0.10 17223.80 7063.99 10159.81 1145 0.10 17244.17 7094.28 10149.89 1150 0.10 17264.06 7124.57 10139.49 1155 0.10 17283.47 7154.87 10128.61 1160 0.10 17302.40 7185.16 10117.24 1165 0.10 17320.85 7215.45 10105.40 1170 0.10 17338.81 7245.74 10093.07 1175 0.10 17356.29 7276.03 10080.26 1180 0.10 17373.29 7306.32 10066.97 1185 0.10 17389.81 7336.62 10053.20 1190 0.10 17405.85 7366.91 10038.94 1195 0.10 17421.40 7397.20 10024.21 1200 0.10 17436.48 7427.49 10008.99 1205 0.10 17451.07 7457.78 9993.29 1210 0.10 17465.18 7488.07 9977.10 1215 0.10 17478.81 7518.36 9960.44 1220 0.10 17491.95 7548.66 9943.29 1225 0.09 17504.62 7578.95 9925.67 1230 0.09 17516.80 7609.24 9907.56 1235 0.09 17528.50 7639.53 9888.97 1240 0.09 17539.72 7669.82 9869.89 1245 0.09 17550.45 7700.11 9850.34 1250 0.09 17560.71 7730.41 9830.30 1255 0.09 17570.48 7760.70 9809.78 1260 0.09 17579.77 7790.99 9788.78 1265 0.09 17588.58 7821.28 9767.30 1270 0.09 17596.91 7851.57 9745.34 1275 0.09 17604.75 7881.86 9722.89 1280 0.09 17612.12 7912.16 9699.96 1285 0.09 17619.00 7942.45 9676.55 1290 0.09 17625.40 7972.74 9652.66 1295 0.09 17631.32 8003.03 9628.29 1300 0.09 17636.75 8033.32 9603.43 1305 0.09 17641.71 8063.61 9578.10 1310 0.09 17646.18 8093.90 9552.28 1315 0.09 17650.17 8124.20 9525.98 1320 0.09 17653.68 8154.49 9499.19 1325 0.09 17656.71 8184.78 9471.93 1330 0.09 17659.25 8215.07 9444.18 1335 0.09 17661.32 8245.36 9415.96 1340 0.09 17662.90 8275.65 9387.25 1345 0.09 17664.00 8305.95 9358.05 1350 0.09 17664.62 8336.24 9328.38 1355 0.09 17664.75 8366.53 9298.23 1360 0.09 17664.41 8396.82 9267.59 1365 0.09 17663.58 8427.11 9236.47 1370 0.09 17662.27 8457.40 9204.87 1375 0.09 17660.48 8487.69 9172.79 1380 0.08 17658.21 8517.99 9140.22 1385 0.08 17655.45 8548.28 9107.18 1390 0.08 17652.22 8578.57 9073.65 1395 0.08 17648.50 8608.86 9039.64 1400 0.08 17644.30 8639.15 9005.15 1405 0.08 17639.62 8669.44 8970.17 1410 0.08 17634.45 8699.74 8934.72 1415 0.08 17628.81 8730.03 8898.78 1420 0.08 17622.68 8760.32 8862.36 1425 0.08 17616.07 8790.61 8825.46 1430 0.08 17608.98 8820.90 8788.08 1435 0.08 17601.41 8851.19 8750.21 1440 0.08 17593.34 8881.48 8711.85 Maximum Difference 10256.99 25 Year Storage Calculations ‐ Basin 17 (Pre) Rainfall Duration  (minutes) Intensity (inches/Hour)       EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference ft3  EQ 5‐4 C 0.370  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 276449.00 ft2 5 4.67 3317.20 176.89 3140.31 Tc 26 Minutes 10 3.41 4844.38 205.42 4638.97 Qa 0.190 ft3 15 2.78 5924.07 233.95 5690.12 P24(25)0.952 20 2.42 6875.90 262.48 6613.42 25 2.06 7316.30 291.01 7025.29 30 1.70 7245.27 319.54 6925.73 35 1.58 7832.92 348.07 7484.85 40 1.45 8243.47 376.60 7866.87 45 1.33 8476.90 405.13 8071.77 50 1.20 8533.22 433.66 8099.56 55 1.08 8412.43 462.19 7950.24 60 0.95 8114.70 490.72 7623.98 65 0.92 8463.11 519.25 7943.86 Storage Volume 596.40 70 0.88 8761.09 547.78 8213.31 75 0.85 9008.64 576.31 8432.33 80 0.81 9205.75 604.84 8600.91 85 0.77 9352.43 633.37 8719.06 90 0.74 9448.68 661.90 8786.78 95 0.70 9494.50 690.43 8804.07 100 0.67 9489.88 718.96 8770.92 105 0.63 9434.83 747.49 8687.34 110 0.60 9329.35 776.02 8553.33 115 0.56 9173.43 804.55 8368.88 120 0.53 8967.08 833.08 8134.00 125 0.51 9096.54 861.61 8234.93 130 0.50 9206.46 890.14 8316.32 135 0.48 9296.85 918.67 8378.18 140 0.47 9367.70 947.20 8420.50 145 0.46 9419.03 975.73 8443.29 150 0.44 9450.81 1004.26 8446.55 155 0.43 9463.07 1032.79 8430.27 160 0.42 9455.78 1061.32 8394.46 165 0.40 9428.97 1089.85 8339.12 170 0.39 9382.62 1118.38 8264.24 175 0.37 9316.74 1146.91 8169.82 180 0.36 9231.32 1175.45 8055.88 185 0.36 9371.67 1203.98 8167.69 190 0.35 9505.74 1232.51 8273.24 195 0.35 9633.54 1261.04 8372.50 200 0.34 9755.06 1289.57 8465.50 205 0.34 9870.31 1318.10 8552.21 210 0.33 9979.28 1346.63 8632.66 215 0.33 10081.98 1375.16 8706.83 220 0.33 10178.41 1403.69 8774.72 225 0.32 10268.56 1432.22 8836.34 230 0.32 10352.43 1460.75 8891.69 235 0.31 10430.04 1489.28 8940.76 240 0.31 10501.36 1517.81 8983.55 245 0.30 10566.41 1546.34 9020.08 250 0.30 10625.19 1574.87 9050.32 255 0.29 10677.69 1603.40 9074.30 260 0.29 10723.92 1631.93 9091.99 265 0.29 10763.88 1660.46 9103.42 270 0.28 10797.56 1688.99 9108.57 275 0.28 10824.96 1717.52 9107.44 280 0.27 10846.09 1746.05 9100.04 285 0.27 10860.95 1774.58 9086.37 290 0.26 10869.53 1803.11 9066.42 295 0.26 10871.84 1831.64 9040.19 300 0.25 10867.87 1860.17 9007.70 305 0.25 10857.62 1888.70 8968.92 310 0.25 10841.11 1917.23 8923.88 315 0.24 10818.32 1945.76 8872.56 320 0.24 10789.25 1974.29 8814.96 325 0.23 10753.91 2002.82 8751.09 330 0.23 10712.29 2031.35 8680.94 335 0.22 10664.40 2059.88 8604.52 340 0.22 10610.24 2088.41 8521.83 345 0.22 10549.80 2116.94 8432.86 350 0.21 10483.09 2145.47 8337.62 355 0.21 10410.10 2174.00 8236.10 360 0.20 10330.90 2202.53 8128.37 365 0.20 10420.37 2231.06 8189.31 370 0.20 10508.36 2259.59 8248.77 375 0.20 10594.87 2288.12 8306.75 380 0.20 10679.90 2316.65 8363.25 385 0.20 10763.45 2345.18 8418.27 390 0.20 10845.53 2373.71 8471.81 395 0.19 10926.12 2402.24 8523.87 400 0.19 11005.23 2430.77 8574.45 405 0.19 11082.86 2459.31 8623.56 410 0.19 11159.01 2487.84 8671.18 415 0.19 11233.68 2516.37 8717.32 420 0.19 11306.88 2544.90 8761.98 425 0.19 11378.59 2573.43 8805.16 430 0.19 11448.82 2601.96 8846.87 435 0.19 11517.57 2630.49 8887.09 440 0.19 11584.85 2659.02 8925.83 445 0.18 11650.64 2687.55 8963.09 450 0.18 11714.95 2716.08 8998.88 455 0.18 11777.79 2744.61 9033.18 460 0.18 11839.14 2773.14 9066.00 465 0.18 11899.02 2801.67 9097.35 470 0.18 11957.41 2830.20 9127.21 475 0.18 12014.32 2858.73 9155.60 480 0.18 12069.76 2887.26 9182.50 485 0.18 12123.71 2915.79 9207.92 490 0.17 12176.19 2944.32 9231.87 495 0.17 12227.18 2972.85 9254.33 500 0.17 12276.70 3001.38 9275.32 505 0.17 12324.73 3029.91 9294.82 510 0.17 12371.29 3058.44 9312.85 515 0.17 12416.36 3086.97 9329.39 520 0.17 12459.96 3115.50 9344.46 525 0.17 12502.07 3144.03 9358.04 530 0.17 12542.71 3172.56 9370.15 535 0.17 12581.87 3201.09 9380.77 540 0.16 12619.54 3229.62 9389.92 545 0.16 12655.74 3258.15 9397.59 550 0.16 12690.46 3286.68 9403.77 555 0.16 12723.69 3315.21 9408.48 560 0.16 12755.45 3343.74 9411.71 565 0.16 12785.73 3372.27 9413.45 570 0.16 12814.52 3400.80 9413.72 575 0.16 12841.84 3429.33 9412.51 580 0.16 12867.68 3457.86 9409.81 585 0.16 12892.04 3486.39 9405.64 590 0.15 12914.91 3514.92 9399.99 595 0.15 12936.31 3543.45 9392.86 600 0.15 12956.23 3571.98 9384.25 605 0.15 12974.67 3600.51 9374.15 610 0.15 12991.63 3629.04 9362.58 615 0.15 13007.10 3657.57 9349.53 620 0.15 13021.10 3686.10 9335.00 625 0.15 13033.62 3714.63 9318.99 630 0.15 13044.66 3743.17 9301.50 635 0.14 13054.22 3771.70 9282.53 640 0.14 13062.30 3800.23 9262.08 645 0.14 13068.90 3828.76 9240.14 650 0.14 13074.02 3857.29 9216.73 655 0.14 13077.66 3885.82 9191.84 660 0.14 13079.82 3914.35 9165.47 665 0.14 13080.50 3942.88 9137.62 670 0.14 13079.70 3971.41 9108.29 675 0.14 13077.42 3999.94 9077.48 680 0.14 13073.66 4028.47 9045.19 685 0.13 13068.42 4057.00 9011.43 690 0.13 13061.70 4085.53 8976.18 695 0.13 13053.51 4114.06 8939.45 700 0.13 13043.83 4142.59 8901.24 705 0.13 13032.67 4171.12 8861.55 710 0.13 13020.03 4199.65 8820.38 715 0.13 13005.91 4228.18 8777.73 720 0.13 12990.34 4256.71 8733.63 725 0.13 13047.65 4285.24 8762.41 730 0.13 13104.50 4313.77 8790.73 735 0.13 13160.90 4342.30 8818.60 740 0.13 13216.85 4370.83 8846.02 745 0.13 13272.35 4399.36 8872.99 750 0.13 13327.39 4427.89 8899.50 755 0.12 13381.97 4456.42 8925.55 760 0.12 13436.10 4484.95 8951.15 765 0.12 13489.78 4513.48 8976.30 770 0.12 13543.01 4542.01 9001.00 775 0.12 13595.78 4570.54 9025.24 780 0.12 13648.10 4599.07 9049.02 785 0.12 13699.96 4627.60 9072.36 790 0.12 13751.37 4656.13 9095.24 795 0.12 13802.32 4684.66 9117.66 800 0.12 13852.83 4713.19 9139.63 805 0.12 13902.87 4741.72 9161.15 810 0.12 13952.47 4770.25 9182.22 815 0.12 14001.61 4798.78 9202.83 820 0.12 14050.30 4827.31 9222.98 825 0.12 14098.53 4855.84 9242.68 830 0.12 14146.31 4884.37 9261.93 835 0.12 14193.63 4912.90 9280.73 840 0.12 14240.50 4941.43 9299.07 845 0.12 14286.92 4969.96 9316.96 850 0.12 14332.88 4998.49 9334.39 855 0.12 14378.39 5027.03 9351.37 860 0.12 14423.45 5055.56 9367.90 865 0.12 14468.05 5084.09 9383.97 870 0.12 14512.20 5112.62 9399.59 875 0.12 14555.90 5141.15 9414.75 880 0.12 14599.14 5169.68 9429.46 885 0.12 14641.92 5198.21 9443.72 890 0.12 14684.26 5226.74 9457.52 895 0.12 14726.14 5255.27 9470.87 900 0.12 14767.56 5283.80 9483.76 905 0.12 14808.53 5312.33 9496.21 910 0.11 14849.05 5340.86 9508.19 915 0.11 14889.12 5369.39 9519.73 920 0.11 14928.73 5397.92 9530.81 925 0.11 14967.88 5426.45 9541.43 930 0.11 15006.59 5454.98 9551.61 935 0.11 15044.83 5483.51 9561.33 940 0.11 15082.63 5512.04 9570.59 945 0.11 15119.97 5540.57 9579.40 950 0.11 15156.86 5569.10 9587.76 955 0.11 15193.29 5597.63 9595.66 960 0.11 15229.27 5626.16 9603.11 965 0.11 15264.80 5654.69 9610.11 970 0.11 15299.87 5683.22 9616.65 975 0.11 15334.49 5711.75 9622.74 980 0.11 15368.65 5740.28 9628.37 985 0.11 15402.36 5768.81 9633.55 990 0.11 15435.62 5797.34 9638.28 995 0.11 15468.42 5825.87 9642.55 1000 0.11 15500.77 5854.40 9646.37 1005 0.11 15532.67 5882.93 9649.74 1010 0.11 15564.11 5911.46 9652.65 1015 0.11 15595.10 5939.99 9655.10 1020 0.11 15625.63 5968.52 9657.11 1025 0.11 15655.71 5997.05 9658.66 1030 0.11 15685.34 6025.58 9659.75 1035 0.11 15714.51 6054.11 9660.40 1040 0.11 15743.23 6082.64 9660.59 1045 0.11 15771.49 6111.17 9660.32 1050 0.11 15799.30 6139.70 9659.60 1055 0.11 15826.66 6168.23 9658.43 1060 0.11 15853.57 6196.76 9656.80 1065 0.10 15880.02 6225.29 9654.72 1070 0.10 15906.01 6253.82 9652.19 1075 0.10 15931.55 6282.35 9649.20 1080 0.10 15956.64 6310.89 9645.76 1085 0.10 15981.28 6339.42 9641.86 1090 0.10 16005.46 6367.95 9637.51 1095 0.10 16029.18 6396.48 9632.71 1100 0.10 16052.46 6425.01 9627.45 1105 0.10 16075.28 6453.54 9621.74 1110 0.10 16097.64 6482.07 9615.57 1115 0.10 16119.55 6510.60 9608.96 1120 0.10 16141.01 6539.13 9601.88 1125 0.10 16162.01 6567.66 9594.36 1130 0.10 16182.56 6596.19 9586.38 1135 0.10 16202.66 6624.72 9577.94 1140 0.10 16222.30 6653.25 9569.05 1145 0.10 16241.49 6681.78 9559.71 1150 0.10 16260.23 6710.31 9549.92 1155 0.10 16278.51 6738.84 9539.67 1160 0.10 16296.33 6767.37 9528.96 1165 0.10 16313.71 6795.90 9517.81 1170 0.10 16330.63 6824.43 9506.20 1175 0.10 16347.09 6852.96 9494.13 1180 0.10 16363.10 6881.49 9481.61 1185 0.10 16378.66 6910.02 9468.64 1190 0.10 16393.77 6938.55 9455.22 1195 0.10 16408.42 6967.08 9441.34 1200 0.10 16422.61 6995.61 9427.00 1205 0.10 16436.36 7024.14 9412.22 1210 0.10 16449.65 7052.67 9396.97 1215 0.10 16462.48 7081.20 9381.28 1220 0.10 16474.86 7109.73 9365.13 1225 0.09 16486.79 7138.26 9348.53 1230 0.09 16498.26 7166.79 9331.47 1235 0.09 16509.28 7195.32 9313.96 1240 0.09 16519.85 7223.85 9296.00 1245 0.09 16529.96 7252.38 9277.58 1250 0.09 16539.62 7280.91 9258.71 1255 0.09 16548.83 7309.44 9239.38 1260 0.09 16557.58 7337.97 9219.60 1265 0.09 16565.87 7366.50 9199.37 1270 0.09 16573.72 7395.03 9178.68 1275 0.09 16581.11 7423.56 9157.54 1280 0.09 16588.04 7452.09 9135.95 1285 0.09 16594.52 7480.62 9113.90 1290 0.09 16600.55 7509.15 9091.40 1295 0.09 16606.13 7537.68 9068.44 1300 0.09 16611.25 7566.21 9045.03 1305 0.09 16615.91 7594.75 9021.17 1310 0.09 16620.12 7623.28 8996.85 1315 0.09 16623.88 7651.81 8972.08 1320 0.09 16627.19 7680.34 8946.85 1325 0.09 16630.04 7708.87 8921.17 1330 0.09 16632.44 7737.40 8895.04 1335 0.09 16634.38 7765.93 8868.45 1340 0.09 16635.87 7794.46 8841.41 1345 0.09 16636.91 7822.99 8813.92 1350 0.09 16637.49 7851.52 8785.97 1355 0.09 16637.62 7880.05 8757.57 1360 0.09 16637.29 7908.58 8728.71 1365 0.09 16636.51 7937.11 8699.40 1370 0.09 16635.28 7965.64 8669.64 1375 0.09 16633.59 7994.17 8639.42 1380 0.08 16631.45 8022.70 8608.75 1385 0.08 16628.86 8051.23 8577.63 1390 0.08 16625.81 8079.76 8546.05 1395 0.08 16622.31 8108.29 8514.02 1400 0.08 16618.35 8136.82 8481.53 1405 0.08 16613.94 8165.35 8448.59 1410 0.08 16609.08 8193.88 8415.20 1415 0.08 16603.76 8222.41 8381.35 1420 0.08 16597.99 8250.94 8347.05 1425 0.08 16591.76 8279.47 8312.29 1430 0.08 16585.09 8308.00 8277.08 1435 0.08 16577.95 8336.53 8241.42 1440 0.08 16570.35 8365.06 8205.29 Maximum Difference 9660.59 25 Year Storage Calculations ‐ Basin 18 (Developed) Rainfall Duration  (minutes) Intensity (inches/Hour)      EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference  ft3 EQ 5‐4 C 0.803  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 4510.00 ft2 5 4.67 117.51 2.02 115.49 Tc 5 Minutes 10 3.41 171.61 3.03 168.58 Qa 0.007 ft3 15 2.78 209.86 4.04 205.81 P24(25)0.952 20 2.42 243.58 5.05 238.52 25 2.06 259.18 6.06 253.11 30 1.70 256.66 7.07 249.59 35 1.58 277.48 8.09 269.39 40 1.45 292.02 9.10 282.92 45 1.33 300.29 10.11 290.18 50 1.20 302.28 11.12 291.17 55 1.08 298.01 12.13 285.88 60 0.95 287.46 13.14 274.32 65 0.92 299.80 14.15 285.65 70 0.88 310.36 15.16 295.20 75 0.85 319.13 16.17 302.96 80 0.81 326.11 17.18 308.93 85 0.77 331.31 18.19 313.11 90 0.74 334.71 19.20 315.51 95 0.70 336.34 20.21 316.12 100 0.67 336.17 21.22 314.95 105 0.63 334.22 22.23 311.99 110 0.60 330.49 23.25 307.24 115 0.56 324.96 24.26 300.71 120 0.53 317.65 25.27 292.39 125 0.51 322.24 26.28 295.96 130 0.50 326.13 27.29 298.85 135 0.48 329.34 28.30 301.04 140 0.47 331.85 29.31 302.54 145 0.46 333.66 30.32 303.34 150 0.44 334.79 31.33 303.46 155 0.43 335.22 32.34 302.88 160 0.42 334.97 33.35 301.61 165 0.40 334.02 34.36 299.65 170 0.39 332.37 35.37 297.00 175 0.37 330.04 36.38 293.66 180 0.36 327.01 37.39 289.62 185 0.36 331.99 38.41 293.58 190 0.35 336.74 39.42 297.32 195 0.35 341.26 40.43 300.84 200 0.34 345.57 41.44 304.13 205 0.34 349.65 42.45 307.20 210 0.33 353.51 43.46 310.05 215 0.33 357.15 44.47 312.68 220 0.33 360.56 45.48 315.08 225 0.32 363.76 46.49 317.27 230 0.32 366.73 47.50 319.23 235 0.31 369.48 48.51 320.97 240 0.31 372.01 49.52 322.48 245 0.30 374.31 50.53 323.78 250 0.30 376.39 51.54 324.85 255 0.29 378.25 52.55 325.70 260 0.29 379.89 53.57 326.32 265 0.29 381.30 54.58 326.73 270 0.28 382.50 55.59 326.91 275 0.28 383.47 56.60 326.87 280 0.27 384.22 57.61 326.61 285 0.27 384.74 58.62 326.12 290 0.26 385.05 59.63 325.42 295 0.26 385.13 60.64 324.49 300 0.25 384.99 61.65 323.34 305 0.25 384.63 62.66 321.96 310 0.25 384.04 63.67 320.37 315 0.24 383.23 64.68 318.55 320 0.24 382.20 65.69 316.51 325 0.23 380.95 66.70 314.25 330 0.23 379.48 67.71 311.76 335 0.22 377.78 68.73 309.06 340 0.22 375.86 69.74 306.13 345 0.22 373.72 70.75 302.97 350 0.21 371.36 71.76 299.60 355 0.21 368.77 72.77 296.00 360 0.20 365.97 73.78 292.19 365 0.20 369.14 74.79 294.35 370 0.20 372.25 75.80 296.45 375 0.20 375.32 76.81 298.51 380 0.20 378.33 77.82 300.51 385 0.20 381.29 78.83 302.46 390 0.20 384.20 79.84 304.35 395 0.19 387.05 80.85 306.20 400 0.19 389.85 81.86 307.99 405 0.19 392.60 82.87 309.73 410 0.19 395.30 83.89 311.42 415 0.19 397.95 84.90 313.05 420 0.19 400.54 85.91 314.63 425 0.19 403.08 86.92 316.16 430 0.19 405.57 87.93 317.64 435 0.19 408.00 88.94 319.07 440 0.19 410.39 89.95 320.44 445 0.18 412.72 90.96 321.76 450 0.18 415.00 91.97 323.03 455 0.18 417.22 92.98 324.24 460 0.18 419.40 93.99 325.40 465 0.18 421.52 95.00 326.51 470 0.18 423.59 96.01 327.57 475 0.18 425.60 97.02 328.58 480 0.18 427.56 98.03 329.53 485 0.18 429.48 99.05 330.43 490 0.17 431.34 100.06 331.28 495 0.17 433.14 101.07 332.07 500 0.17 434.90 102.08 332.82 505 0.17 436.60 103.09 333.51 510 0.17 438.25 104.10 334.15 515 0.17 439.84 105.11 334.73 520 0.17 441.39 106.12 335.27 525 0.17 442.88 107.13 335.75 530 0.17 444.32 108.14 336.18 535 0.17 445.71 109.15 336.55 540 0.16 447.04 110.16 336.88 545 0.16 448.32 111.17 337.15 550 0.16 449.55 112.18 337.37 555 0.16 450.73 113.19 337.54 560 0.16 451.86 114.21 337.65 565 0.16 452.93 115.22 337.71 570 0.16 453.95 116.23 337.72 575 0.16 454.92 117.24 337.68 580 0.16 455.83 118.25 337.58 585 0.16 456.69 119.26 337.43 590 0.15 457.50 120.27 337.23 595 0.15 458.26 121.28 336.98 600 0.15 458.97 122.29 336.68 605 0.15 459.62 123.30 336.32 610 0.15 460.22 124.31 335.91 615 0.15 460.77 125.32 335.45 620 0.15 461.27 126.33 334.93 625 0.15 461.71 127.34 334.37 630 0.15 462.10 128.35 333.75 635 0.14 462.44 129.37 333.07 640 0.14 462.73 130.38 332.35 645 0.14 462.96 131.39 331.57 650 0.14 463.14 132.40 330.74 655 0.14 463.27 133.41 329.86 660 0.14 463.35 134.42 328.93 665 0.14 463.37 135.43 327.94 670 0.14 463.34 136.44 326.90 675 0.14 463.26 137.45 325.81 680 0.14 463.13 138.46 324.67 685 0.13 462.94 139.47 323.47 690 0.13 462.70 140.48 322.22 695 0.13 462.41 141.49 320.92 700 0.13 462.07 142.50 319.57 705 0.13 461.68 143.51 318.16 710 0.13 461.23 144.53 316.70 715 0.13 460.73 145.54 315.19 720 0.13 460.18 146.55 313.63 725 0.13 462.21 147.56 314.65 730 0.13 464.22 148.57 315.65 735 0.13 466.22 149.58 316.64 740 0.13 468.20 150.59 317.61 745 0.13 470.17 151.60 318.57 750 0.13 472.12 152.61 319.50 755 0.12 474.05 153.62 320.43 760 0.12 475.97 154.63 321.33 765 0.12 477.87 155.64 322.23 770 0.12 479.75 156.65 323.10 775 0.12 481.62 157.66 323.96 780 0.12 483.48 158.67 324.80 785 0.12 485.31 159.69 325.63 790 0.12 487.14 160.70 326.44 795 0.12 488.94 161.71 327.23 800 0.12 490.73 162.72 328.01 805 0.12 492.50 163.73 328.77 810 0.12 494.26 164.74 329.52 815 0.12 496.00 165.75 330.25 820 0.12 497.72 166.76 330.96 825 0.12 499.43 167.77 331.66 830 0.12 501.13 168.78 332.34 835 0.12 502.80 169.79 333.01 840 0.12 504.46 170.80 333.66 845 0.12 506.11 171.81 334.29 850 0.12 507.74 172.82 334.91 855 0.12 509.35 173.83 335.51 860 0.12 510.94 174.85 336.10 865 0.12 512.52 175.86 336.67 870 0.12 514.09 176.87 337.22 875 0.12 515.64 177.88 337.76 880 0.12 517.17 178.89 338.28 885 0.12 518.68 179.90 338.78 890 0.12 520.18 180.91 339.27 895 0.12 521.67 181.92 339.75 900 0.12 523.13 182.93 340.20 905 0.12 524.58 183.94 340.64 910 0.11 526.02 184.95 341.07 915 0.11 527.44 185.96 341.48 920 0.11 528.84 186.97 341.87 925 0.11 530.23 187.98 342.25 930 0.11 531.60 188.99 342.61 935 0.11 532.96 190.01 342.95 940 0.11 534.29 191.02 343.28 945 0.11 535.62 192.03 343.59 950 0.11 536.92 193.04 343.89 955 0.11 538.21 194.05 344.17 960 0.11 539.49 195.06 344.43 965 0.11 540.75 196.07 344.68 970 0.11 541.99 197.08 344.91 975 0.11 543.22 198.09 345.13 980 0.11 544.43 199.10 345.32 985 0.11 545.62 200.11 345.51 990 0.11 546.80 201.12 345.68 995 0.11 547.96 202.13 345.83 1000 0.11 549.11 203.14 345.96 1005 0.11 550.24 204.16 346.08 1010 0.11 551.35 205.17 346.18 1015 0.11 552.45 206.18 346.27 1020 0.11 553.53 207.19 346.34 1025 0.11 554.60 208.20 346.40 1030 0.11 555.64 209.21 346.44 1035 0.11 556.68 210.22 346.46 1040 0.11 557.70 211.23 346.47 1045 0.11 558.70 212.24 346.46 1050 0.11 559.68 213.25 346.43 1055 0.11 560.65 214.26 346.39 1060 0.11 561.60 215.27 346.33 1065 0.10 562.54 216.28 346.26 1070 0.10 563.46 217.29 346.17 1075 0.10 564.37 218.30 346.06 1080 0.10 565.26 219.32 345.94 1085 0.10 566.13 220.33 345.80 1090 0.10 566.99 221.34 345.65 1095 0.10 567.83 222.35 345.48 1100 0.10 568.65 223.36 345.29 1105 0.10 569.46 224.37 345.09 1110 0.10 570.25 225.38 344.87 1115 0.10 571.03 226.39 344.64 1120 0.10 571.79 227.40 344.39 1125 0.10 572.53 228.41 344.12 1130 0.10 573.26 229.42 343.84 1135 0.10 573.97 230.43 343.54 1140 0.10 574.67 231.44 343.22 1145 0.10 575.35 232.45 342.89 1150 0.10 576.01 233.46 342.55 1155 0.10 576.66 234.48 342.18 1160 0.10 577.29 235.49 341.80 1165 0.10 577.90 236.50 341.41 1170 0.10 578.50 237.51 341.00 1175 0.10 579.09 238.52 340.57 1180 0.10 579.65 239.53 340.13 1185 0.10 580.21 240.54 339.67 1190 0.10 580.74 241.55 339.19 1195 0.10 581.26 242.56 338.70 1200 0.10 581.76 243.57 338.19 1205 0.10 582.25 244.58 337.67 1210 0.10 582.72 245.59 337.13 1215 0.10 583.17 246.60 336.57 1220 0.10 583.61 247.61 336.00 1225 0.09 584.04 248.62 335.41 1230 0.09 584.44 249.64 334.81 1235 0.09 584.83 250.65 334.19 1240 0.09 585.21 251.66 333.55 1245 0.09 585.57 252.67 332.90 1250 0.09 585.91 253.68 332.23 1255 0.09 586.23 254.69 331.55 1260 0.09 586.54 255.70 330.84 1265 0.09 586.84 256.71 330.13 1270 0.09 587.12 257.72 329.39 1275 0.09 587.38 258.73 328.65 1280 0.09 587.62 259.74 327.88 1285 0.09 587.85 260.75 327.10 1290 0.09 588.07 261.76 326.30 1295 0.09 588.26 262.77 325.49 1300 0.09 588.44 263.78 324.66 1305 0.09 588.61 264.80 323.81 1310 0.09 588.76 265.81 322.95 1315 0.09 588.89 266.82 322.08 1320 0.09 589.01 267.83 321.18 1325 0.09 589.11 268.84 320.27 1330 0.09 589.20 269.85 319.35 1335 0.09 589.26 270.86 318.41 1340 0.09 589.32 271.87 317.45 1345 0.09 589.35 272.88 316.47 1350 0.09 589.37 273.89 315.48 1355 0.09 589.38 274.90 314.48 1360 0.09 589.37 275.91 313.45 1365 0.09 589.34 276.92 312.42 1370 0.09 589.30 277.93 311.36 1375 0.09 589.24 278.94 310.29 1380 0.08 589.16 279.96 309.21 1385 0.08 589.07 280.97 308.10 1390 0.08 588.96 281.98 306.98 1395 0.08 588.84 282.99 305.85 1400 0.08 588.70 284.00 304.70 1405 0.08 588.54 285.01 303.53 1410 0.08 588.37 286.02 302.35 1415 0.08 588.18 287.03 301.15 1420 0.08 587.98 288.04 299.93 1425 0.08 587.75 289.05 298.70 1430 0.08 587.52 290.06 297.46 1435 0.08 587.27 291.07 296.19 1440 0.08 587.00 292.08 294.91 Maximum Difference 346.47 25 Year Storage Calculations ‐ Basin 18 (Pre) Rainfall Duration  (minutes) Intensity (inches/Hour)       EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference ft3  EQ 5‐4 C 0.370  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 4510.00 ft2 5 4.67 54.12 0.93 53.19 Tc 5 Minutes 10 3.41 79.03 1.40 77.64 Qa 0.003 ft3 15 2.78 96.65 1.86 94.78 P24(25)0.952 20 2.42 112.17 2.33 109.85 25 2.06 119.36 2.79 116.57 30 1.70 118.20 3.26 114.94 35 1.58 127.79 3.72 124.06 40 1.45 134.48 4.19 130.30 45 1.33 138.29 4.65 133.64 50 1.20 139.21 5.12 134.09 55 1.08 137.24 5.59 131.66 60 0.95 132.38 6.05 126.33 65 0.92 138.07 6.52 131.55 Storage Volume 186.91 70 0.88 142.93 6.98 135.95 75 0.85 146.97 7.45 139.52 80 0.81 150.18 7.91 142.27 85 0.77 152.58 8.38 144.20 90 0.74 154.15 8.84 145.30 95 0.70 154.89 9.31 145.58 100 0.67 154.82 9.77 145.04 105 0.63 153.92 10.24 143.68 110 0.60 152.20 10.71 141.49 115 0.56 149.66 11.17 138.49 120 0.53 146.29 11.64 134.65 125 0.51 148.40 12.10 136.30 130 0.50 150.19 12.57 137.63 135 0.48 151.67 13.03 138.64 140 0.47 152.83 13.50 139.33 145 0.46 153.66 13.96 139.70 150 0.44 154.18 14.43 139.75 155 0.43 154.38 14.89 139.49 160 0.42 154.26 15.36 138.90 165 0.40 153.82 15.83 138.00 170 0.39 153.07 16.29 136.78 175 0.37 151.99 16.76 135.24 180 0.36 150.60 17.22 133.38 185 0.36 152.89 17.69 135.20 190 0.35 155.08 18.15 136.92 195 0.35 157.16 18.62 138.54 200 0.34 159.14 19.08 140.06 205 0.34 161.02 19.55 141.48 210 0.33 162.80 20.01 142.79 215 0.33 164.48 20.48 144.00 220 0.33 166.05 20.94 145.11 225 0.32 167.52 21.41 146.11 230 0.32 168.89 21.88 147.01 235 0.31 170.16 22.34 147.81 240 0.31 171.32 22.81 148.51 245 0.30 172.38 23.27 149.11 250 0.30 173.34 23.74 149.60 255 0.29 174.20 24.20 149.99 260 0.29 174.95 24.67 150.28 265 0.29 175.60 25.13 150.47 270 0.28 176.15 25.60 150.55 275 0.28 176.60 26.06 150.53 280 0.27 176.94 26.53 150.41 285 0.27 177.19 27.00 150.19 290 0.26 177.33 27.46 149.86 295 0.26 177.36 27.93 149.44 300 0.25 177.30 28.39 148.91 305 0.25 177.13 28.86 148.27 310 0.25 176.86 29.32 147.54 315 0.24 176.49 29.79 146.70 320 0.24 176.02 30.25 145.76 325 0.23 175.44 30.72 144.72 330 0.23 174.76 31.18 143.58 335 0.22 173.98 31.65 142.33 340 0.22 173.10 32.12 140.98 345 0.22 172.11 32.58 139.53 350 0.21 171.02 33.05 137.98 355 0.21 169.83 33.51 136.32 360 0.20 168.54 33.98 134.56 365 0.20 170.00 34.44 135.56 370 0.20 171.43 34.91 136.53 375 0.20 172.85 35.37 137.47 380 0.20 174.23 35.84 138.39 385 0.20 175.60 36.30 139.29 390 0.20 176.93 36.77 140.16 395 0.19 178.25 37.24 141.01 400 0.19 179.54 37.70 141.84 405 0.19 180.81 38.17 142.64 410 0.19 182.05 38.63 143.42 415 0.19 183.27 39.10 144.17 420 0.19 184.46 39.56 144.90 425 0.19 185.63 40.03 145.60 430 0.19 186.78 40.49 146.28 435 0.19 187.90 40.96 146.94 440 0.19 189.00 41.42 147.57 445 0.18 190.07 41.89 148.18 450 0.18 191.12 42.36 148.76 455 0.18 192.14 42.82 149.32 460 0.18 193.14 43.29 149.86 465 0.18 194.12 43.75 150.37 470 0.18 195.07 44.22 150.86 475 0.18 196.00 44.68 151.32 480 0.18 196.91 45.15 151.76 485 0.18 197.79 45.61 152.17 490 0.17 198.64 46.08 152.56 495 0.17 199.47 46.54 152.93 500 0.17 200.28 47.01 153.27 505 0.17 201.07 47.48 153.59 510 0.17 201.83 47.94 153.89 515 0.17 202.56 48.41 154.15 520 0.17 203.27 48.87 154.40 525 0.17 203.96 49.34 154.62 530 0.17 204.62 49.80 154.82 535 0.17 205.26 50.27 154.99 540 0.16 205.88 50.73 155.14 545 0.16 206.47 51.20 155.27 550 0.16 207.03 51.66 155.37 555 0.16 207.57 52.13 155.45 560 0.16 208.09 52.60 155.50 565 0.16 208.59 53.06 155.53 570 0.16 209.06 53.53 155.53 575 0.16 209.50 53.99 155.51 580 0.16 209.92 54.46 155.47 585 0.16 210.32 54.92 155.40 590 0.15 210.69 55.39 155.31 595 0.15 211.04 55.85 155.19 600 0.15 211.37 56.32 155.05 605 0.15 211.67 56.78 154.89 610 0.15 211.95 57.25 154.70 615 0.15 212.20 57.71 154.48 620 0.15 212.43 58.18 154.25 625 0.15 212.63 58.65 153.99 630 0.15 212.81 59.11 153.70 635 0.14 212.97 59.58 153.39 640 0.14 213.10 60.04 153.06 645 0.14 213.21 60.51 152.70 650 0.14 213.29 60.97 152.32 655 0.14 213.35 61.44 151.91 660 0.14 213.38 61.90 151.48 665 0.14 213.40 62.37 151.03 670 0.14 213.38 62.83 150.55 675 0.14 213.35 63.30 150.05 680 0.14 213.28 63.77 149.52 685 0.13 213.20 64.23 148.97 690 0.13 213.09 64.70 148.39 695 0.13 212.96 65.16 147.79 700 0.13 212.80 65.63 147.17 705 0.13 212.62 66.09 146.52 710 0.13 212.41 66.56 145.85 715 0.13 212.18 67.02 145.16 720 0.13 211.92 67.49 144.44 725 0.13 212.86 67.95 144.91 730 0.13 213.79 68.42 145.37 735 0.13 214.71 68.89 145.82 740 0.13 215.62 69.35 146.27 745 0.13 216.53 69.82 146.71 750 0.13 217.42 70.28 147.14 755 0.12 218.31 70.75 147.57 760 0.12 219.20 71.21 147.98 765 0.12 220.07 71.68 148.39 770 0.12 220.94 72.14 148.80 775 0.12 221.80 72.61 149.19 780 0.12 222.66 73.07 149.58 785 0.12 223.50 73.54 149.96 790 0.12 224.34 74.01 150.33 795 0.12 225.17 74.47 150.70 800 0.12 226.00 74.94 151.06 805 0.12 226.81 75.40 151.41 810 0.12 227.62 75.87 151.75 815 0.12 228.42 76.33 152.09 820 0.12 229.22 76.80 152.42 825 0.12 230.00 77.26 152.74 830 0.12 230.78 77.73 153.05 835 0.12 231.56 78.19 153.36 840 0.12 232.32 78.66 153.66 845 0.12 233.08 79.13 153.95 850 0.12 233.83 79.59 154.24 855 0.12 234.57 80.06 154.51 860 0.12 235.30 80.52 154.78 865 0.12 236.03 80.99 155.05 870 0.12 236.75 81.45 155.30 875 0.12 237.47 81.92 155.55 880 0.12 238.17 82.38 155.79 885 0.12 238.87 82.85 156.02 890 0.12 239.56 83.31 156.25 895 0.12 240.24 83.78 156.46 900 0.12 240.92 84.25 156.67 905 0.12 241.59 84.71 156.88 910 0.11 242.25 85.18 157.07 915 0.11 242.90 85.64 157.26 920 0.11 243.55 86.11 157.44 925 0.11 244.19 86.57 157.61 930 0.11 244.82 87.04 157.78 935 0.11 245.44 87.50 157.94 940 0.11 246.06 87.97 158.09 945 0.11 246.67 88.43 158.23 950 0.11 247.27 88.90 158.37 955 0.11 247.86 89.37 158.50 960 0.11 248.45 89.83 158.62 965 0.11 249.03 90.30 158.73 970 0.11 249.60 90.76 158.84 975 0.11 250.17 91.23 158.94 980 0.11 250.72 91.69 159.03 985 0.11 251.27 92.16 159.12 990 0.11 251.82 92.62 159.19 995 0.11 252.35 93.09 159.26 1000 0.11 252.88 93.55 159.33 1005 0.11 253.40 94.02 159.38 1010 0.11 253.91 94.48 159.43 1015 0.11 254.42 94.95 159.47 1020 0.11 254.92 95.42 159.50 1025 0.11 255.41 95.88 159.53 1030 0.11 255.89 96.35 159.54 1035 0.11 256.37 96.81 159.55 1040 0.11 256.84 97.28 159.56 1045 0.11 257.30 97.74 159.55 1050 0.11 257.75 98.21 159.54 1055 0.11 258.20 98.67 159.52 1060 0.11 258.64 99.14 159.50 1065 0.10 259.07 99.60 159.46 1070 0.10 259.49 100.07 159.42 1075 0.10 259.91 100.54 159.37 1080 0.10 260.32 101.00 159.32 1085 0.10 260.72 101.47 159.25 1090 0.10 261.11 101.93 159.18 1095 0.10 261.50 102.40 159.10 1100 0.10 261.88 102.86 159.02 1105 0.10 262.25 103.33 158.92 1110 0.10 262.62 103.79 158.82 1115 0.10 262.98 104.26 158.72 1120 0.10 263.33 104.72 158.60 1125 0.10 263.67 105.19 158.48 1130 0.10 264.00 105.66 158.35 1135 0.10 264.33 106.12 158.21 1140 0.10 264.65 106.59 158.06 1145 0.10 264.96 107.05 157.91 1150 0.10 265.27 107.52 157.75 1155 0.10 265.57 107.98 157.59 1160 0.10 265.86 108.45 157.41 1165 0.10 266.14 108.91 157.23 1170 0.10 266.42 109.38 157.04 1175 0.10 266.69 109.84 156.84 1180 0.10 266.95 110.31 156.64 1185 0.10 267.20 110.78 156.43 1190 0.10 267.45 111.24 156.21 1195 0.10 267.69 111.71 155.98 1200 0.10 267.92 112.17 155.75 1205 0.10 268.14 112.64 155.51 1210 0.10 268.36 113.10 155.26 1215 0.10 268.57 113.57 155.00 1220 0.10 268.77 114.03 154.74 1225 0.09 268.97 114.50 154.47 1230 0.09 269.15 114.96 154.19 1235 0.09 269.33 115.43 153.90 1240 0.09 269.51 115.90 153.61 1245 0.09 269.67 116.36 153.31 1250 0.09 269.83 116.83 153.00 1255 0.09 269.98 117.29 152.69 1260 0.09 270.12 117.76 152.36 1265 0.09 270.26 118.22 152.03 1270 0.09 270.38 118.69 151.70 1275 0.09 270.50 119.15 151.35 1280 0.09 270.62 119.62 151.00 1285 0.09 270.72 120.08 150.64 1290 0.09 270.82 120.55 150.27 1295 0.09 270.91 121.02 149.90 1300 0.09 271.00 121.48 149.52 1305 0.09 271.07 121.95 149.13 1310 0.09 271.14 122.41 148.73 1315 0.09 271.20 122.88 148.33 1320 0.09 271.26 123.34 147.91 1325 0.09 271.30 123.81 147.50 1330 0.09 271.34 124.27 147.07 1335 0.09 271.37 124.74 146.64 1340 0.09 271.40 125.20 146.19 1345 0.09 271.42 125.67 145.75 1350 0.09 271.42 126.14 145.29 1355 0.09 271.43 126.60 144.83 1360 0.09 271.42 127.07 144.36 1365 0.09 271.41 127.53 143.88 1370 0.09 271.39 128.00 143.39 1375 0.09 271.36 128.46 142.90 1380 0.08 271.33 128.93 142.40 1385 0.08 271.28 129.39 141.89 1390 0.08 271.23 129.86 141.38 1395 0.08 271.18 130.32 140.85 1400 0.08 271.11 130.79 140.32 1405 0.08 271.04 131.25 139.79 1410 0.08 270.96 131.72 139.24 1415 0.08 270.87 132.19 138.69 1420 0.08 270.78 132.65 138.13 1425 0.08 270.68 133.12 137.56 1430 0.08 270.57 133.58 136.99 1435 0.08 270.45 134.05 136.41 1440 0.08 270.33 134.51 135.82 Maximum Difference 159.56 25 Year Storage Calculations ‐ Basin 19 (Developed) Rainfall Duration  (minutes) Intensity (inches/Hour)      EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference  ft3 EQ 5‐4 C 0.458  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 140146.00 ft2 5 4.67 2080.62 113.11 1967.51 Tc 27 Minutes 10 3.41 3038.51 130.79 2907.72 Qa 0.118 ft3 15 2.78 3715.71 148.46 3567.25 P24(25)0.952 20 2.42 4312.72 166.13 4146.59 25 2.06 4588.95 183.81 4405.14 30 1.70 4544.40 201.48 4342.92 35 1.58 4912.99 219.16 4693.83 40 1.45 5170.49 236.83 4933.66 45 1.33 5316.91 254.50 5062.40 50 1.20 5352.23 272.18 5080.05 55 1.08 5276.47 289.85 4986.62 60 0.95 5089.73 307.53 4782.20 65 0.92 5308.26 325.20 4983.06 70 0.88 5495.16 342.87 5152.28 75 0.85 5650.42 360.55 5289.88 80 0.81 5774.06 378.22 5395.84 85 0.77 5866.06 395.90 5470.17 90 0.74 5926.43 413.57 5512.86 95 0.70 5955.17 431.24 5523.92 100 0.67 5952.27 448.92 5503.35 105 0.63 5917.74 466.59 5451.15 110 0.60 5851.58 484.26 5367.32 115 0.56 5753.79 501.94 5251.85 120 0.53 5624.36 519.61 5104.75 125 0.51 5705.56 537.29 5168.27 130 0.50 5774.50 554.96 5219.54 135 0.48 5831.20 572.63 5258.56 140 0.47 5875.64 590.31 5285.33 145 0.46 5907.83 607.98 5299.85 150 0.44 5927.77 625.66 5302.11 155 0.43 5935.45 643.33 5292.12 160 0.42 5930.89 661.00 5269.88 165 0.40 5914.07 678.68 5235.39 170 0.39 5885.00 696.35 5188.64 175 0.37 5843.67 714.03 5129.65 180 0.36 5790.10 731.70 5058.40 185 0.36 5878.13 749.37 5128.75 190 0.35 5962.22 767.05 5195.17 195 0.35 6042.38 784.72 5257.66 200 0.34 6118.60 802.39 5316.20 205 0.34 6190.89 820.07 5370.82 210 0.33 6259.24 837.74 5421.49 215 0.33 6323.65 855.42 5468.24 220 0.33 6384.13 873.09 5511.04 225 0.32 6440.68 890.76 5549.91 230 0.32 6493.28 908.44 5584.85 235 0.31 6541.96 926.11 5615.85 240 0.31 6586.70 943.79 5642.91 245 0.30 6627.50 961.46 5666.04 250 0.30 6664.36 979.13 5685.23 255 0.29 6697.30 996.81 5700.49 260 0.29 6726.29 1014.48 5711.81 265 0.29 6751.35 1032.16 5719.20 270 0.28 6772.48 1049.83 5722.65 275 0.28 6789.66 1067.50 5722.16 280 0.27 6802.92 1085.18 5717.74 285 0.27 6812.24 1102.85 5709.39 290 0.26 6817.62 1120.52 5697.09 295 0.26 6819.06 1138.20 5680.87 300 0.25 6816.58 1155.87 5660.70 305 0.25 6810.15 1173.55 5636.61 310 0.25 6799.79 1191.22 5608.57 315 0.24 6785.50 1208.89 5576.60 320 0.24 6767.27 1226.57 5540.70 325 0.23 6745.10 1244.24 5500.86 330 0.23 6719.00 1261.92 5457.08 335 0.22 6688.96 1279.59 5409.37 340 0.22 6654.99 1297.26 5357.72 345 0.22 6617.08 1314.94 5302.14 350 0.21 6575.23 1332.61 5242.62 355 0.21 6529.45 1350.28 5179.17 360 0.20 6479.78 1367.96 5111.82 365 0.20 6535.90 1385.63 5150.26 370 0.20 6591.09 1403.31 5187.78 375 0.20 6645.35 1420.98 5224.37 380 0.20 6698.68 1438.65 5260.03 385 0.20 6751.09 1456.33 5294.76 390 0.20 6802.56 1474.00 5328.56 395 0.19 6853.11 1491.68 5361.44 400 0.19 6902.73 1509.35 5393.38 405 0.19 6951.42 1527.02 5424.40 410 0.19 6999.19 1544.70 5454.49 415 0.19 7046.03 1562.37 5483.65 420 0.19 7091.93 1580.05 5511.89 425 0.19 7136.91 1597.72 5539.19 430 0.19 7180.96 1615.39 5565.57 435 0.19 7224.09 1633.07 5591.02 440 0.19 7266.28 1650.74 5615.54 445 0.18 7307.55 1668.41 5639.13 450 0.18 7347.89 1686.09 5661.80 455 0.18 7387.30 1703.76 5683.54 460 0.18 7425.78 1721.44 5704.35 465 0.18 7463.34 1739.11 5724.23 470 0.18 7499.96 1756.78 5743.18 475 0.18 7535.66 1774.46 5761.20 480 0.18 7570.43 1792.13 5778.30 485 0.18 7604.27 1809.81 5794.46 490 0.17 7637.18 1827.48 5809.70 495 0.17 7669.17 1845.15 5824.02 500 0.17 7700.23 1862.83 5837.40 505 0.17 7730.35 1880.50 5849.85 510 0.17 7759.56 1898.18 5861.38 515 0.17 7787.83 1915.85 5871.98 520 0.17 7815.17 1933.52 5881.65 525 0.17 7841.59 1951.20 5890.39 530 0.17 7867.08 1968.87 5898.20 535 0.17 7891.64 1986.54 5905.09 540 0.16 7915.27 2004.22 5911.05 545 0.16 7937.97 2021.89 5916.08 550 0.16 7959.75 2039.57 5920.18 555 0.16 7980.59 2057.24 5923.35 560 0.16 8000.51 2074.91 5925.60 565 0.16 8019.50 2092.59 5926.91 570 0.16 8037.56 2110.26 5927.30 575 0.16 8054.70 2127.94 5926.76 580 0.16 8070.90 2145.61 5925.29 585 0.16 8086.18 2163.28 5922.90 590 0.15 8100.53 2180.96 5919.57 595 0.15 8113.95 2198.63 5915.32 600 0.15 8126.44 2216.31 5910.14 605 0.15 8138.01 2233.98 5904.03 610 0.15 8148.65 2251.65 5896.99 615 0.15 8158.36 2269.33 5889.03 620 0.15 8167.14 2287.00 5880.13 625 0.15 8174.99 2304.67 5870.31 630 0.15 8181.91 2322.35 5859.56 635 0.14 8187.91 2340.02 5847.88 640 0.14 8192.98 2357.70 5835.28 645 0.14 8197.11 2375.37 5821.74 650 0.14 8200.33 2393.04 5807.28 655 0.14 8202.61 2410.72 5791.89 660 0.14 8203.96 2428.39 5775.57 665 0.14 8204.39 2446.07 5758.32 670 0.14 8203.89 2463.74 5740.15 675 0.14 8202.46 2481.41 5721.05 680 0.14 8200.10 2499.09 5701.01 685 0.13 8196.82 2516.76 5680.05 690 0.13 8192.60 2534.44 5658.17 695 0.13 8187.46 2552.11 5635.35 700 0.13 8181.39 2569.78 5611.60 705 0.13 8174.39 2587.46 5586.93 710 0.13 8166.46 2605.13 5561.33 715 0.13 8157.61 2622.80 5534.80 720 0.13 8147.84 2640.48 5507.36 725 0.13 8183.78 2658.15 5525.63 730 0.13 8219.45 2675.83 5543.62 735 0.13 8254.82 2693.50 5561.32 740 0.13 8289.91 2711.17 5578.74 745 0.13 8324.72 2728.85 5595.87 750 0.13 8359.24 2746.52 5612.72 755 0.12 8393.48 2764.20 5629.28 760 0.12 8427.43 2781.87 5645.56 765 0.12 8461.10 2799.54 5661.56 770 0.12 8494.49 2817.22 5677.27 775 0.12 8527.58 2834.89 5692.69 780 0.12 8560.40 2852.57 5707.83 785 0.12 8592.93 2870.24 5722.69 790 0.12 8625.17 2887.91 5737.26 795 0.12 8657.13 2905.59 5751.55 800 0.12 8688.81 2923.26 5765.55 805 0.12 8720.20 2940.93 5779.27 810 0.12 8751.31 2958.61 5792.70 815 0.12 8782.13 2976.28 5805.85 820 0.12 8812.67 2993.96 5818.71 825 0.12 8842.92 3011.63 5831.29 830 0.12 8872.89 3029.30 5843.58 835 0.12 8902.57 3046.98 5855.59 840 0.12 8931.97 3064.65 5867.32 845 0.12 8961.09 3082.33 5878.76 850 0.12 8989.91 3100.00 5889.91 855 0.12 9018.46 3117.67 5900.79 860 0.12 9046.72 3135.35 5911.37 865 0.12 9074.70 3153.02 5921.67 870 0.12 9102.39 3170.70 5931.69 875 0.12 9129.79 3188.37 5941.42 880 0.12 9156.91 3206.04 5950.87 885 0.12 9183.75 3223.72 5960.03 890 0.12 9210.30 3241.39 5968.91 895 0.12 9236.57 3259.06 5977.51 900 0.12 9262.55 3276.74 5985.82 905 0.12 9288.25 3294.41 5993.84 910 0.11 9313.67 3312.09 6001.58 915 0.11 9338.80 3329.76 6009.04 920 0.11 9363.64 3347.43 6016.21 925 0.11 9388.20 3365.11 6023.09 930 0.11 9412.48 3382.78 6029.69 935 0.11 9436.47 3400.46 6036.01 940 0.11 9460.17 3418.13 6042.04 945 0.11 9483.59 3435.80 6047.79 950 0.11 9506.73 3453.48 6053.25 955 0.11 9529.58 3471.15 6058.43 960 0.11 9552.15 3488.83 6063.32 965 0.11 9574.43 3506.50 6067.93 970 0.11 9596.43 3524.17 6072.26 975 0.11 9618.14 3541.85 6076.30 980 0.11 9639.57 3559.52 6080.05 985 0.11 9660.72 3577.19 6083.52 990 0.11 9681.58 3594.87 6086.71 995 0.11 9702.15 3612.54 6089.61 1000 0.11 9722.44 3630.22 6092.22 1005 0.11 9742.45 3647.89 6094.56 1010 0.11 9762.17 3665.56 6096.60 1015 0.11 9781.60 3683.24 6098.36 1020 0.11 9800.75 3700.91 6099.84 1025 0.11 9819.62 3718.59 6101.04 1030 0.11 9838.20 3736.26 6101.94 1035 0.11 9856.50 3753.93 6102.57 1040 0.11 9874.51 3771.61 6102.91 1045 0.11 9892.24 3789.28 6102.96 1050 0.11 9909.69 3806.96 6102.73 1055 0.11 9926.85 3824.63 6102.22 1060 0.11 9943.72 3842.30 6101.42 1065 0.10 9960.31 3859.98 6100.33 1070 0.10 9976.62 3877.65 6098.96 1075 0.10 9992.64 3895.32 6097.31 1080 0.10 10008.37 3913.00 6095.37 1085 0.10 10023.82 3930.67 6093.15 1090 0.10 10038.99 3948.35 6090.64 1095 0.10 10053.87 3966.02 6087.85 1100 0.10 10068.47 3983.69 6084.77 1105 0.10 10082.78 4001.37 6081.41 1110 0.10 10096.81 4019.04 6077.77 1115 0.10 10110.55 4036.72 6073.84 1120 0.10 10124.01 4054.39 6069.62 1125 0.10 10137.19 4072.06 6065.12 1130 0.10 10150.08 4089.74 6060.34 1135 0.10 10162.68 4107.41 6055.27 1140 0.10 10175.00 4125.09 6049.92 1145 0.10 10187.04 4142.76 6044.28 1150 0.10 10198.79 4160.43 6038.35 1155 0.10 10210.25 4178.11 6032.15 1160 0.10 10221.43 4195.78 6025.65 1165 0.10 10232.33 4213.45 6018.88 1170 0.10 10242.94 4231.13 6011.82 1175 0.10 10253.27 4248.80 6004.47 1180 0.10 10263.31 4266.48 5996.84 1185 0.10 10273.07 4284.15 5988.92 1190 0.10 10282.55 4301.82 5980.72 1195 0.10 10291.74 4319.50 5972.24 1200 0.10 10300.64 4337.17 5963.47 1205 0.10 10309.26 4354.85 5954.41 1210 0.10 10317.60 4372.52 5945.08 1215 0.10 10325.65 4390.19 5935.45 1220 0.10 10333.41 4407.87 5925.54 1225 0.09 10340.89 4425.54 5915.35 1230 0.09 10348.09 4443.22 5904.87 1235 0.09 10355.00 4460.89 5894.11 1240 0.09 10361.63 4478.56 5883.07 1245 0.09 10367.97 4496.24 5871.73 1250 0.09 10374.03 4513.91 5860.12 1255 0.09 10379.80 4531.58 5848.22 1260 0.09 10385.29 4549.26 5836.03 1265 0.09 10390.50 4566.93 5823.56 1270 0.09 10395.42 4584.61 5810.81 1275 0.09 10400.05 4602.28 5797.77 1280 0.09 10404.40 4619.95 5784.45 1285 0.09 10408.47 4637.63 5770.84 1290 0.09 10412.25 4655.30 5756.95 1295 0.09 10415.74 4672.98 5742.77 1300 0.09 10418.95 4690.65 5728.31 1305 0.09 10421.88 4708.32 5713.56 1310 0.09 10424.52 4726.00 5698.53 1315 0.09 10426.88 4743.67 5683.21 1320 0.09 10428.95 4761.35 5667.61 1325 0.09 10430.74 4779.02 5651.72 1330 0.09 10432.25 4796.69 5635.55 1335 0.09 10433.47 4814.37 5619.10 1340 0.09 10434.40 4832.04 5602.36 1345 0.09 10435.05 4849.71 5585.34 1350 0.09 10435.42 4867.39 5568.03 1355 0.09 10435.50 4885.06 5550.43 1360 0.09 10435.29 4902.74 5532.56 1365 0.09 10434.80 4920.41 5514.39 1370 0.09 10434.03 4938.08 5495.95 1375 0.09 10432.97 4955.76 5477.21 1380 0.08 10431.63 4973.43 5458.20 1385 0.08 10430.00 4991.11 5438.90 1390 0.08 10428.09 5008.78 5419.31 1395 0.08 10425.89 5026.45 5399.44 1400 0.08 10423.41 5044.13 5379.28 1405 0.08 10420.65 5061.80 5358.84 1410 0.08 10417.60 5079.48 5338.12 1415 0.08 10414.26 5097.15 5317.11 1420 0.08 10410.64 5114.82 5295.82 1425 0.08 10406.74 5132.50 5274.24 1430 0.08 10402.55 5150.17 5252.38 1435 0.08 10398.07 5167.84 5230.23 1440 0.08 10393.31 5185.52 5207.79 Maximum Difference 6102.96 25 Year Storage Calculations ‐ Basin 19 (Pre) Rainfall Duration  (minutes) Intensity (inches/Hour)       EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference ft3  EQ 5‐4 C 0.370  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 140146.00 ft2 5 4.67 1681.65 92.57 1589.09 Tc 27 Minutes 10 3.41 2455.86 107.03 2348.83 Qa 0.096 ft3 15 2.78 3003.21 121.49 2881.72 P24(25)0.952 20 2.42 3485.74 135.96 3349.79 25 2.06 3709.00 150.42 3558.58 30 1.70 3672.99 164.88 3508.11 35 1.58 3970.91 179.35 3791.56 40 1.45 4179.03 193.81 3985.22 45 1.33 4297.37 208.27 4089.10 50 1.20 4325.92 222.74 4103.19 55 1.08 4264.69 237.20 4027.49 60 0.95 4113.75 251.66 3862.09 65 0.92 4290.38 266.13 4024.25 Storage Volume 1208.41 70 0.88 4441.44 280.59 4160.85 75 0.85 4566.93 295.05 4271.88 80 0.81 4666.86 309.52 4357.34 85 0.77 4741.22 323.98 4417.24 90 0.74 4790.02 338.44 4451.57 95 0.70 4813.24 352.91 4460.33 100 0.67 4810.90 367.37 4443.53 105 0.63 4782.99 381.83 4401.16 110 0.60 4729.52 396.30 4333.22 115 0.56 4650.48 410.76 4239.72 120 0.53 4545.87 425.22 4120.64 125 0.51 4611.50 439.69 4171.81 130 0.50 4667.22 454.15 4213.07 135 0.48 4713.04 468.61 4244.43 140 0.47 4748.96 483.08 4265.89 145 0.46 4774.98 497.54 4277.44 150 0.44 4791.10 512.00 4279.09 155 0.43 4797.31 526.47 4270.84 160 0.42 4793.62 540.93 4252.68 165 0.40 4780.02 555.40 4224.63 170 0.39 4756.53 569.86 4186.67 175 0.37 4723.13 584.32 4138.81 180 0.36 4679.83 598.79 4081.04 185 0.36 4750.97 613.25 4137.73 190 0.35 4818.94 627.71 4191.23 195 0.35 4883.73 642.18 4241.55 200 0.34 4945.34 656.64 4288.70 205 0.34 5003.76 671.10 4332.66 210 0.33 5059.00 685.57 4373.44 215 0.33 5111.07 700.03 4411.04 220 0.33 5159.95 714.49 4445.46 225 0.32 5205.65 728.96 4476.70 230 0.32 5248.17 743.42 4504.75 235 0.31 5287.51 757.88 4529.63 240 0.31 5323.67 772.35 4551.33 245 0.30 5356.65 786.81 4569.84 250 0.30 5386.45 801.27 4585.17 255 0.29 5413.06 815.74 4597.33 260 0.29 5436.50 830.20 4606.30 265 0.29 5456.75 844.66 4612.09 270 0.28 5473.83 859.13 4614.70 275 0.28 5487.72 873.59 4614.13 280 0.27 5498.43 888.05 4610.38 285 0.27 5505.96 902.52 4603.45 290 0.26 5510.31 916.98 4593.33 295 0.26 5511.48 931.44 4580.04 300 0.25 5509.47 945.91 4563.57 305 0.25 5504.28 960.37 4543.91 310 0.25 5495.91 974.83 4521.07 315 0.24 5484.35 989.30 4495.05 320 0.24 5469.62 1003.76 4465.86 325 0.23 5451.70 1018.22 4433.48 330 0.23 5430.60 1032.69 4397.92 335 0.22 5406.33 1047.15 4359.18 340 0.22 5378.87 1061.61 4317.25 345 0.22 5348.23 1076.08 4272.15 350 0.21 5314.41 1090.54 4223.87 355 0.21 5277.41 1105.00 4172.40 360 0.20 5237.26 1119.47 4117.79 365 0.20 5282.61 1133.93 4148.68 370 0.20 5327.22 1148.40 4178.83 375 0.20 5371.08 1162.86 4208.22 380 0.20 5414.18 1177.32 4236.86 385 0.20 5456.54 1191.79 4264.75 390 0.20 5498.15 1206.25 4291.90 395 0.19 5539.00 1220.71 4318.29 400 0.19 5579.11 1235.18 4343.93 405 0.19 5618.46 1249.64 4368.82 410 0.19 5657.07 1264.10 4392.97 415 0.19 5694.92 1278.57 4416.36 420 0.19 5732.03 1293.03 4439.00 425 0.19 5768.38 1307.49 4460.89 430 0.19 5803.99 1321.96 4482.03 435 0.19 5838.84 1336.42 4502.42 440 0.19 5872.95 1350.88 4522.06 445 0.18 5906.30 1365.35 4540.95 450 0.18 5938.90 1379.81 4559.09 455 0.18 5970.76 1394.27 4576.48 460 0.18 6001.86 1408.74 4593.12 465 0.18 6032.21 1423.20 4609.01 470 0.18 6061.82 1437.66 4624.15 475 0.18 6090.67 1452.13 4638.54 480 0.18 6118.77 1466.59 4652.18 485 0.18 6146.12 1481.05 4665.07 490 0.17 6172.73 1495.52 4677.21 495 0.17 6198.58 1509.98 4688.60 500 0.17 6223.68 1524.44 4699.24 505 0.17 6248.03 1538.91 4709.12 510 0.17 6271.63 1553.37 4718.26 515 0.17 6294.48 1567.83 4726.65 520 0.17 6316.58 1582.30 4734.29 525 0.17 6337.93 1596.76 4741.17 530 0.17 6358.53 1611.22 4747.31 535 0.17 6378.39 1625.69 4752.70 540 0.16 6397.49 1640.15 4757.33 545 0.16 6415.83 1654.61 4761.22 550 0.16 6433.43 1669.08 4764.36 555 0.16 6450.28 1683.54 4766.74 560 0.16 6466.38 1698.00 4768.38 565 0.16 6481.73 1712.47 4769.26 570 0.16 6496.33 1726.93 4769.40 575 0.16 6510.18 1741.40 4768.78 580 0.16 6523.28 1755.86 4767.42 585 0.16 6535.63 1770.32 4765.30 590 0.15 6547.22 1784.79 4762.44 595 0.15 6558.07 1799.25 4758.82 600 0.15 6568.17 1813.71 4754.46 605 0.15 6577.52 1828.18 4749.34 610 0.15 6586.11 1842.64 4743.47 615 0.15 6593.96 1857.10 4736.86 620 0.15 6601.06 1871.57 4729.49 625 0.15 6607.40 1886.03 4721.37 630 0.15 6613.00 1900.49 4712.51 635 0.14 6617.85 1914.96 4702.89 640 0.14 6621.94 1929.42 4692.52 645 0.14 6625.29 1943.88 4681.40 650 0.14 6627.88 1958.35 4669.54 655 0.14 6629.73 1972.81 4656.92 660 0.14 6630.82 1987.27 4643.55 665 0.14 6631.17 2001.74 4629.43 670 0.14 6630.76 2016.20 4614.56 675 0.14 6629.61 2030.66 4598.94 680 0.14 6627.70 2045.13 4582.57 685 0.13 6625.05 2059.59 4565.46 690 0.13 6621.64 2074.05 4547.59 695 0.13 6617.48 2088.52 4528.97 700 0.13 6612.58 2102.98 4509.60 705 0.13 6606.92 2117.44 4489.48 710 0.13 6600.51 2131.91 4468.61 715 0.13 6593.36 2146.37 4446.98 720 0.13 6585.46 2160.83 4424.63 725 0.13 6614.51 2175.30 4439.22 730 0.13 6643.34 2189.76 4453.58 735 0.13 6671.93 2204.22 4467.70 740 0.13 6700.29 2218.69 4481.60 745 0.13 6728.42 2233.15 4495.27 750 0.13 6756.33 2247.61 4508.71 755 0.12 6784.00 2262.08 4521.92 760 0.12 6811.44 2276.54 4534.90 765 0.12 6838.65 2291.00 4547.65 770 0.12 6865.64 2305.47 4560.17 775 0.12 6892.39 2319.93 4572.46 780 0.12 6918.91 2334.40 4584.52 785 0.12 6945.20 2348.86 4596.34 790 0.12 6971.27 2363.32 4607.94 795 0.12 6997.10 2377.79 4619.31 800 0.12 7022.70 2392.25 4630.45 805 0.12 7048.07 2406.71 4641.36 810 0.12 7073.21 2421.18 4652.04 815 0.12 7098.12 2435.64 4662.49 820 0.12 7122.81 2450.10 4672.70 825 0.12 7147.26 2464.57 4682.69 830 0.12 7171.48 2479.03 4692.45 835 0.12 7195.47 2493.49 4701.98 840 0.12 7219.23 2507.96 4711.28 845 0.12 7242.76 2522.42 4720.34 850 0.12 7266.07 2536.88 4729.18 855 0.12 7289.14 2551.35 4737.79 860 0.12 7311.98 2565.81 4746.17 865 0.12 7334.59 2580.27 4754.32 870 0.12 7356.97 2594.74 4762.23 875 0.12 7379.12 2609.20 4769.92 880 0.12 7401.04 2623.66 4777.38 885 0.12 7422.73 2638.13 4784.61 890 0.12 7444.19 2652.59 4791.60 895 0.12 7465.42 2667.05 4798.37 900 0.12 7486.43 2681.52 4804.91 905 0.12 7507.20 2695.98 4811.22 910 0.11 7527.74 2710.44 4817.29 915 0.11 7548.05 2724.91 4823.14 920 0.11 7568.13 2739.37 4828.76 925 0.11 7587.98 2753.83 4834.14 930 0.11 7607.60 2768.30 4839.30 935 0.11 7626.99 2782.76 4844.23 940 0.11 7646.15 2797.22 4848.92 945 0.11 7665.08 2811.69 4853.39 950 0.11 7683.78 2826.15 4857.63 955 0.11 7702.25 2840.61 4861.63 960 0.11 7720.49 2855.08 4865.41 965 0.11 7738.50 2869.54 4868.96 970 0.11 7756.28 2884.00 4872.27 975 0.11 7773.83 2898.47 4875.36 980 0.11 7791.15 2912.93 4878.22 985 0.11 7808.24 2927.40 4880.84 990 0.11 7825.10 2941.86 4883.24 995 0.11 7841.73 2956.32 4885.40 1000 0.11 7858.13 2970.79 4887.34 1005 0.11 7874.30 2985.25 4889.05 1010 0.11 7890.24 2999.71 4890.52 1015 0.11 7905.94 3014.18 4891.77 1020 0.11 7921.42 3028.64 4892.78 1025 0.11 7936.67 3043.10 4893.57 1030 0.11 7951.69 3057.57 4894.13 1035 0.11 7966.48 3072.03 4894.45 1040 0.11 7981.04 3086.49 4894.55 1045 0.11 7995.37 3100.96 4894.41 1050 0.11 8009.47 3115.42 4894.05 1055 0.11 8023.34 3129.88 4893.45 1060 0.11 8036.98 3144.35 4892.63 1065 0.10 8050.38 3158.81 4891.57 1070 0.10 8063.56 3173.27 4890.29 1075 0.10 8076.51 3187.74 4888.77 1080 0.10 8089.23 3202.20 4887.03 1085 0.10 8101.72 3216.66 4885.05 1090 0.10 8113.98 3231.13 4882.85 1095 0.10 8126.00 3245.59 4880.41 1100 0.10 8137.80 3260.05 4877.75 1105 0.10 8149.37 3274.52 4874.85 1110 0.10 8160.71 3288.98 4871.73 1115 0.10 8171.82 3303.44 4868.37 1120 0.10 8182.70 3317.91 4864.79 1125 0.10 8193.34 3332.37 4860.97 1130 0.10 8203.76 3346.83 4856.93 1135 0.10 8213.95 3361.30 4852.65 1140 0.10 8223.91 3375.76 4848.15 1145 0.10 8233.63 3390.22 4843.41 1150 0.10 8243.13 3404.69 4838.44 1155 0.10 8252.40 3419.15 4833.25 1160 0.10 8261.44 3433.61 4827.82 1165 0.10 8270.24 3448.08 4822.17 1170 0.10 8278.82 3462.54 4816.28 1175 0.10 8287.17 3477.00 4810.16 1180 0.10 8295.29 3491.47 4803.82 1185 0.10 8303.17 3505.93 4797.24 1190 0.10 8310.83 3520.40 4790.44 1195 0.10 8318.26 3534.86 4783.40 1200 0.10 8325.45 3549.32 4776.13 1205 0.10 8332.42 3563.79 4768.64 1210 0.10 8339.16 3578.25 4760.91 1215 0.10 8345.67 3592.71 4752.95 1220 0.10 8351.94 3607.18 4744.77 1225 0.09 8357.99 3621.64 4736.35 1230 0.09 8363.81 3636.10 4727.70 1235 0.09 8369.39 3650.57 4718.83 1240 0.09 8374.75 3665.03 4709.72 1245 0.09 8379.87 3679.49 4700.38 1250 0.09 8384.77 3693.96 4690.82 1255 0.09 8389.44 3708.42 4681.02 1260 0.09 8393.87 3722.88 4670.99 1265 0.09 8398.08 3737.35 4660.73 1270 0.09 8402.06 3751.81 4650.25 1275 0.09 8405.80 3766.27 4639.53 1280 0.09 8409.32 3780.74 4628.58 1285 0.09 8412.60 3795.20 4617.40 1290 0.09 8415.66 3809.66 4606.00 1295 0.09 8418.49 3824.13 4594.36 1300 0.09 8421.08 3838.59 4582.49 1305 0.09 8423.45 3853.05 4570.39 1310 0.09 8425.58 3867.52 4558.07 1315 0.09 8427.49 3881.98 4545.51 1320 0.09 8429.16 3896.44 4532.72 1325 0.09 8430.61 3910.91 4519.70 1330 0.09 8431.82 3925.37 4506.45 1335 0.09 8432.81 3939.83 4492.98 1340 0.09 8433.57 3954.30 4479.27 1345 0.09 8434.09 3968.76 4465.33 1350 0.09 8434.39 3983.22 4451.16 1355 0.09 8434.45 3997.69 4436.76 1360 0.09 8434.29 4012.15 4422.13 1365 0.09 8433.89 4026.61 4407.28 1370 0.09 8433.27 4041.08 4392.19 1375 0.09 8432.41 4055.54 4376.87 1380 0.08 8431.33 4070.00 4361.32 1385 0.08 8430.01 4084.47 4345.54 1390 0.08 8428.46 4098.93 4329.53 1395 0.08 8426.69 4113.40 4313.29 1400 0.08 8424.68 4127.86 4296.83 1405 0.08 8422.45 4142.32 4280.13 1410 0.08 8419.98 4156.79 4263.20 1415 0.08 8417.29 4171.25 4246.04 1420 0.08 8414.36 4185.71 4228.65 1425 0.08 8411.21 4200.18 4211.03 1430 0.08 8407.82 4214.64 4193.18 1435 0.08 8404.20 4229.10 4175.10 1440 0.08 8400.35 4243.57 4156.79 Maximum Difference 4894.55 25 Year Storage Calculations ‐ Basin 20 (Developed) Rainfall Duration  (minutes) Intensity (inches/Hour)      EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference  ft3 EQ 5‐4 C 0.458  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 45974.00 ft2 5 4.67 682.53 11.74 670.79 Tc 5 Minutes 10 3.41 996.76 17.61 979.15 Qa 0.039 ft3 15 2.78 1218.92 23.48 1195.44 P24(25)0.952 20 2.42 1414.76 29.35 1385.41 25 2.06 1505.38 35.22 1470.15 30 1.70 1490.76 41.09 1449.67 35 1.58 1611.67 46.96 1564.71 40 1.45 1696.15 52.83 1643.31 45 1.33 1744.18 58.70 1685.47 50 1.20 1755.77 64.57 1691.19 55 1.08 1730.91 70.44 1660.47 60 0.95 1669.65 76.31 1593.34 65 0.92 1741.34 82.18 1659.16 70 0.88 1802.65 88.05 1714.60 75 0.85 1853.59 93.92 1759.66 80 0.81 1894.14 99.79 1794.35 85 0.77 1924.32 105.67 1818.66 90 0.74 1944.13 111.54 1832.59 95 0.70 1953.55 117.41 1836.15 100 0.67 1952.60 123.28 1829.33 105 0.63 1941.28 129.15 1812.13 110 0.60 1919.57 135.02 1784.56 115 0.56 1887.49 140.89 1746.61 120 0.53 1845.04 146.76 1698.28 125 0.51 1871.67 152.63 1719.04 130 0.50 1894.29 158.50 1735.79 135 0.48 1912.89 164.37 1748.52 140 0.47 1927.47 170.24 1757.23 145 0.46 1938.03 176.11 1761.92 150 0.44 1944.57 181.98 1762.59 155 0.43 1947.09 187.85 1759.24 160 0.42 1945.59 193.72 1751.87 165 0.40 1940.07 199.59 1740.48 170 0.39 1930.54 205.46 1725.08 175 0.37 1916.98 211.33 1705.65 180 0.36 1899.40 217.20 1682.20 185 0.36 1928.28 223.07 1705.21 190 0.35 1955.87 228.94 1726.93 195 0.35 1982.16 234.81 1747.35 200 0.34 2007.17 240.68 1766.49 205 0.34 2030.88 246.55 1784.33 210 0.33 2053.30 252.42 1800.88 215 0.33 2074.43 258.29 1816.14 220 0.33 2094.27 264.16 1830.11 225 0.32 2112.82 270.03 1842.79 230 0.32 2130.08 275.90 1854.18 235 0.31 2146.05 281.77 1864.27 240 0.31 2160.72 287.64 1873.08 245 0.30 2174.11 293.51 1880.59 250 0.30 2186.20 299.38 1886.82 255 0.29 2197.01 305.25 1891.75 260 0.29 2206.52 311.12 1895.39 265 0.29 2214.74 317.00 1897.74 270 0.28 2221.67 322.87 1898.80 275 0.28 2227.31 328.74 1898.57 280 0.27 2231.65 334.61 1897.05 285 0.27 2234.71 340.48 1894.23 290 0.26 2236.48 346.35 1890.13 295 0.26 2236.95 352.22 1884.73 300 0.25 2236.13 358.09 1878.05 305 0.25 2234.03 363.96 1870.07 310 0.25 2230.63 369.83 1860.80 315 0.24 2225.94 375.70 1850.24 320 0.24 2219.96 381.57 1838.39 325 0.23 2212.69 387.44 1825.25 330 0.23 2204.12 393.31 1810.82 335 0.22 2194.27 399.18 1795.09 340 0.22 2183.13 405.05 1778.08 345 0.22 2170.69 410.92 1759.77 350 0.21 2156.96 416.79 1740.17 355 0.21 2141.95 422.66 1719.29 360 0.20 2125.65 428.53 1697.12 365 0.20 2144.06 434.40 1709.66 370 0.20 2162.16 440.27 1721.89 375 0.20 2179.96 446.14 1733.82 380 0.20 2197.46 452.01 1745.45 385 0.20 2214.65 457.88 1756.77 390 0.20 2231.54 463.75 1767.79 395 0.19 2248.12 469.62 1778.50 400 0.19 2264.40 475.49 1788.90 405 0.19 2280.37 481.36 1799.01 410 0.19 2296.04 487.23 1808.81 415 0.19 2311.40 493.10 1818.30 420 0.19 2326.46 498.97 1827.49 425 0.19 2341.22 504.84 1836.37 430 0.19 2355.67 510.71 1844.96 435 0.19 2369.82 516.58 1853.23 440 0.19 2383.66 522.45 1861.20 445 0.18 2397.20 528.33 1868.87 450 0.18 2410.43 534.20 1876.23 455 0.18 2423.36 540.07 1883.29 460 0.18 2435.98 545.94 1890.04 465 0.18 2448.30 551.81 1896.49 470 0.18 2460.31 557.68 1902.64 475 0.18 2472.03 563.55 1908.48 480 0.18 2483.43 569.42 1914.01 485 0.18 2494.53 575.29 1919.25 490 0.17 2505.33 581.16 1924.17 495 0.17 2515.82 587.03 1928.79 500 0.17 2526.01 592.90 1933.11 505 0.17 2535.89 598.77 1937.13 510 0.17 2545.47 604.64 1940.83 515 0.17 2554.75 610.51 1944.24 520 0.17 2563.72 616.38 1947.34 525 0.17 2572.38 622.25 1950.13 530 0.17 2580.74 628.12 1952.62 535 0.17 2588.80 633.99 1954.81 540 0.16 2596.55 639.86 1956.69 545 0.16 2604.00 645.73 1958.27 550 0.16 2611.14 651.60 1959.54 555 0.16 2617.98 657.47 1960.51 560 0.16 2624.52 663.34 1961.17 565 0.16 2630.75 669.21 1961.53 570 0.16 2636.67 675.08 1961.59 575 0.16 2642.29 680.95 1961.34 580 0.16 2647.61 686.82 1960.79 585 0.16 2652.62 692.69 1959.93 590 0.15 2657.33 698.56 1958.76 595 0.15 2661.73 704.43 1957.30 600 0.15 2665.83 710.30 1955.52 605 0.15 2669.62 716.17 1953.45 610 0.15 2673.11 722.04 1951.07 615 0.15 2676.30 727.91 1948.38 620 0.15 2679.18 733.78 1945.39 625 0.15 2681.75 739.66 1942.10 630 0.15 2684.02 745.53 1938.50 635 0.14 2685.99 751.40 1934.60 640 0.14 2687.65 757.27 1930.39 645 0.14 2689.01 763.14 1925.87 650 0.14 2690.06 769.01 1921.06 655 0.14 2690.81 774.88 1915.94 660 0.14 2691.26 780.75 1910.51 665 0.14 2691.40 786.62 1904.78 670 0.14 2691.23 792.49 1898.75 675 0.14 2690.76 798.36 1892.41 680 0.14 2689.99 804.23 1885.76 685 0.13 2688.91 810.10 1878.81 690 0.13 2687.53 815.97 1871.56 695 0.13 2685.84 821.84 1864.00 700 0.13 2683.85 827.71 1856.14 705 0.13 2681.56 833.58 1847.98 710 0.13 2678.96 839.45 1839.51 715 0.13 2676.05 845.32 1830.73 720 0.13 2672.85 851.19 1821.66 725 0.13 2684.64 857.06 1827.58 730 0.13 2696.34 862.93 1833.41 735 0.13 2707.94 868.80 1839.14 740 0.13 2719.45 874.67 1844.78 745 0.13 2730.87 880.54 1850.33 750 0.13 2742.20 886.41 1855.78 755 0.12 2753.43 892.28 1861.15 760 0.12 2764.57 898.15 1866.41 765 0.12 2775.61 904.02 1871.59 770 0.12 2786.56 909.89 1876.67 775 0.12 2797.42 915.76 1881.66 780 0.12 2808.18 921.63 1886.55 785 0.12 2818.86 927.50 1891.35 790 0.12 2829.43 933.37 1896.06 795 0.12 2839.92 939.24 1900.67 800 0.12 2850.31 945.11 1905.19 805 0.12 2860.61 950.99 1909.62 810 0.12 2870.81 956.86 1913.96 815 0.12 2880.92 962.73 1918.20 820 0.12 2890.94 968.60 1922.34 825 0.12 2900.86 974.47 1926.40 830 0.12 2910.69 980.34 1930.36 835 0.12 2920.43 986.21 1934.23 840 0.12 2930.08 992.08 1938.00 845 0.12 2939.63 997.95 1941.68 850 0.12 2949.08 1003.82 1945.27 855 0.12 2958.45 1009.69 1948.76 860 0.12 2967.72 1015.56 1952.16 865 0.12 2976.90 1021.43 1955.47 870 0.12 2985.98 1027.30 1958.68 875 0.12 2994.97 1033.17 1961.80 880 0.12 3003.87 1039.04 1964.83 885 0.12 3012.67 1044.91 1967.76 890 0.12 3021.38 1050.78 1970.60 895 0.12 3030.00 1056.65 1973.35 900 0.12 3038.52 1062.52 1976.00 905 0.12 3046.95 1068.39 1978.56 910 0.11 3055.29 1074.26 1981.03 915 0.11 3063.53 1080.13 1983.40 920 0.11 3071.68 1086.00 1985.68 925 0.11 3079.74 1091.87 1987.87 930 0.11 3087.70 1097.74 1989.96 935 0.11 3095.57 1103.61 1991.96 940 0.11 3103.35 1109.48 1993.87 945 0.11 3111.03 1115.35 1995.68 950 0.11 3118.62 1121.22 1997.40 955 0.11 3126.12 1127.09 1999.02 960 0.11 3133.52 1132.96 2000.56 965 0.11 3140.83 1138.83 2002.00 970 0.11 3148.05 1144.70 2003.34 975 0.11 3155.17 1150.57 2004.60 980 0.11 3162.20 1156.44 2005.76 985 0.11 3169.14 1162.32 2006.82 990 0.11 3175.98 1168.19 2007.79 995 0.11 3182.73 1174.06 2008.67 1000 0.11 3189.38 1179.93 2009.46 1005 0.11 3195.95 1185.80 2010.15 1010 0.11 3202.42 1191.67 2010.75 1015 0.11 3208.79 1197.54 2011.26 1020 0.11 3215.07 1203.41 2011.67 1025 0.11 3221.26 1209.28 2011.99 1030 0.11 3227.36 1215.15 2012.21 1035 0.11 3233.36 1221.02 2012.34 1040 0.11 3239.27 1226.89 2012.38 1045 0.11 3245.09 1232.76 2012.33 1050 0.11 3250.81 1238.63 2012.18 1055 0.11 3256.44 1244.50 2011.94 1060 0.11 3261.97 1250.37 2011.60 1065 0.10 3267.42 1256.24 2011.18 1070 0.10 3272.76 1262.11 2010.66 1075 0.10 3278.02 1267.98 2010.04 1080 0.10 3283.18 1273.85 2009.33 1085 0.10 3288.25 1279.72 2008.53 1090 0.10 3293.23 1285.59 2007.64 1095 0.10 3298.11 1291.46 2006.65 1100 0.10 3302.90 1297.33 2005.57 1105 0.10 3307.59 1303.20 2004.39 1110 0.10 3312.19 1309.07 2003.12 1115 0.10 3316.70 1314.94 2001.76 1120 0.10 3321.12 1320.81 2000.30 1125 0.10 3325.44 1326.68 1998.76 1130 0.10 3329.67 1332.55 1997.11 1135 0.10 3333.80 1338.42 1995.38 1140 0.10 3337.84 1344.29 1993.55 1145 0.10 3341.79 1350.16 1991.63 1150 0.10 3345.65 1356.03 1989.61 1155 0.10 3349.41 1361.90 1987.50 1160 0.10 3353.08 1367.77 1985.30 1165 0.10 3356.65 1373.65 1983.01 1170 0.10 3360.13 1379.52 1980.62 1175 0.10 3363.52 1385.39 1978.13 1180 0.10 3366.81 1391.26 1975.56 1185 0.10 3370.02 1397.13 1972.89 1190 0.10 3373.12 1403.00 1970.13 1195 0.10 3376.14 1408.87 1967.27 1200 0.10 3379.06 1414.74 1964.32 1205 0.10 3381.89 1420.61 1961.28 1210 0.10 3384.62 1426.48 1958.14 1215 0.10 3387.26 1432.35 1954.91 1220 0.10 3389.81 1438.22 1951.59 1225 0.09 3392.26 1444.09 1948.18 1230 0.09 3394.62 1449.96 1944.67 1235 0.09 3396.89 1455.83 1941.06 1240 0.09 3399.07 1461.70 1937.37 1245 0.09 3401.15 1467.57 1933.58 1250 0.09 3403.13 1473.44 1929.69 1255 0.09 3405.03 1479.31 1925.72 1260 0.09 3406.83 1485.18 1921.65 1265 0.09 3408.54 1491.05 1917.49 1270 0.09 3410.15 1496.92 1913.23 1275 0.09 3411.67 1502.79 1908.88 1280 0.09 3413.10 1508.66 1904.44 1285 0.09 3414.43 1514.53 1899.90 1290 0.09 3415.67 1520.40 1895.27 1295 0.09 3416.82 1526.27 1890.55 1300 0.09 3417.87 1532.14 1885.73 1305 0.09 3418.83 1538.01 1880.82 1310 0.09 3419.70 1543.88 1875.82 1315 0.09 3420.47 1549.75 1870.72 1320 0.09 3421.15 1555.62 1865.53 1325 0.09 3421.74 1561.49 1860.24 1330 0.09 3422.23 1567.36 1854.87 1335 0.09 3422.63 1573.23 1849.40 1340 0.09 3422.94 1579.10 1843.83 1345 0.09 3423.15 1584.98 1838.18 1350 0.09 3423.27 1590.85 1832.43 1355 0.09 3423.30 1596.72 1826.58 1360 0.09 3423.23 1602.59 1820.64 1365 0.09 3423.07 1608.46 1814.61 1370 0.09 3422.82 1614.33 1808.49 1375 0.09 3422.47 1620.20 1802.27 1380 0.08 3422.03 1626.07 1795.96 1385 0.08 3421.50 1631.94 1789.56 1390 0.08 3420.87 1637.81 1783.06 1395 0.08 3420.15 1643.68 1776.47 1400 0.08 3419.33 1649.55 1769.79 1405 0.08 3418.43 1655.42 1763.01 1410 0.08 3417.43 1661.29 1756.14 1415 0.08 3416.33 1667.16 1749.17 1420 0.08 3415.14 1673.03 1742.11 1425 0.08 3413.86 1678.90 1734.96 1430 0.08 3412.49 1684.77 1727.72 1435 0.08 3411.02 1690.64 1720.38 1440 0.08 3409.46 1696.51 1712.95 Maximum Difference 2012.38 25 Year Storage Calculations ‐ Basin 20 (Pre) Rainfall Duration  (minutes) Intensity (inches/Hour)       EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference ft3  EQ 5‐4 C 0.370  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 45974.00 ft2 5 4.67 551.66 9.49 542.17 Tc 5 Minutes 10 3.41 805.63 14.23 791.40 Qa 0.032 ft3 15 2.78 985.18 18.98 966.21 P24(25)0.952 20 2.42 1143.48 23.72 1119.75 25 2.06 1216.71 28.47 1188.25 30 1.70 1204.90 33.21 1171.69 35 1.58 1302.63 37.96 1264.67 40 1.45 1370.90 42.70 1328.20 45 1.33 1409.72 47.45 1362.28 50 1.20 1419.09 52.19 1366.90 55 1.08 1399.00 56.94 1342.07 60 0.95 1349.49 61.68 1287.81 65 0.92 1407.43 66.42 1341.01 Storage Volume 385.88 70 0.88 1456.99 71.17 1385.82 75 0.85 1498.15 75.91 1422.24 80 0.81 1530.93 80.66 1450.28 85 0.77 1555.33 85.40 1469.92 90 0.74 1571.33 90.15 1481.19 95 0.70 1578.95 94.89 1484.06 100 0.67 1578.19 99.64 1478.55 105 0.63 1569.03 104.38 1464.65 110 0.60 1551.49 109.13 1442.36 115 0.56 1525.56 113.87 1411.69 120 0.53 1491.24 118.62 1372.63 125 0.51 1512.77 123.36 1389.41 130 0.50 1531.05 128.11 1402.95 135 0.48 1546.08 132.85 1413.23 140 0.47 1557.87 137.59 1420.27 145 0.46 1566.40 142.34 1424.06 150 0.44 1571.69 147.08 1424.60 155 0.43 1573.73 151.83 1421.90 160 0.42 1572.52 156.57 1415.94 165 0.40 1568.06 161.32 1406.74 170 0.39 1560.35 166.06 1394.29 175 0.37 1549.39 170.81 1378.58 180 0.36 1535.19 175.55 1359.64 185 0.36 1558.53 180.30 1378.23 190 0.35 1580.82 185.04 1395.78 195 0.35 1602.08 189.79 1412.29 200 0.34 1622.29 194.53 1427.76 205 0.34 1641.45 199.27 1442.18 210 0.33 1659.57 204.02 1455.56 215 0.33 1676.65 208.76 1467.89 220 0.33 1692.69 213.51 1479.18 225 0.32 1707.68 218.25 1489.43 230 0.32 1721.63 223.00 1498.63 235 0.31 1734.53 227.74 1506.79 240 0.31 1746.40 232.49 1513.91 245 0.30 1757.22 237.23 1519.98 250 0.30 1766.99 241.98 1525.01 255 0.29 1775.72 246.72 1529.00 260 0.29 1783.41 251.47 1531.94 265 0.29 1790.05 256.21 1533.84 270 0.28 1795.65 260.95 1534.70 275 0.28 1800.21 265.70 1534.51 280 0.27 1803.73 270.44 1533.28 285 0.27 1806.20 275.19 1531.01 290 0.26 1807.62 279.93 1527.69 295 0.26 1808.01 284.68 1523.33 300 0.25 1807.35 289.42 1517.92 305 0.25 1805.64 294.17 1511.48 310 0.25 1802.90 298.91 1503.99 315 0.24 1799.11 303.66 1495.45 320 0.24 1794.27 308.40 1485.87 325 0.23 1788.40 313.15 1475.25 330 0.23 1781.48 317.89 1463.58 335 0.22 1773.51 322.63 1450.88 340 0.22 1764.50 327.38 1437.12 345 0.22 1754.45 332.12 1422.33 350 0.21 1743.36 336.87 1406.49 355 0.21 1731.22 341.61 1389.61 360 0.20 1718.05 346.36 1371.69 365 0.20 1732.93 351.10 1381.82 370 0.20 1747.56 355.85 1391.71 375 0.20 1761.95 360.59 1401.36 380 0.20 1776.09 365.34 1410.75 385 0.20 1789.98 370.08 1419.90 390 0.20 1803.63 374.83 1428.81 395 0.19 1817.03 379.57 1437.46 400 0.19 1830.19 384.32 1445.88 405 0.19 1843.10 389.06 1454.04 410 0.19 1855.77 393.80 1461.96 415 0.19 1868.18 398.55 1469.63 420 0.19 1880.36 403.29 1477.06 425 0.19 1892.28 408.04 1484.24 430 0.19 1903.96 412.78 1491.18 435 0.19 1915.39 417.53 1497.87 440 0.19 1926.58 422.27 1504.31 445 0.18 1937.52 427.02 1510.51 450 0.18 1948.22 431.76 1516.46 455 0.18 1958.67 436.51 1522.16 460 0.18 1968.87 441.25 1527.62 465 0.18 1978.83 446.00 1532.83 470 0.18 1988.54 450.74 1537.80 475 0.18 1998.01 455.48 1542.52 480 0.18 2007.22 460.23 1546.99 485 0.18 2016.20 464.97 1551.22 490 0.17 2024.92 469.72 1555.20 495 0.17 2033.40 474.46 1558.94 500 0.17 2041.64 479.21 1562.43 505 0.17 2049.63 483.95 1565.67 510 0.17 2057.37 488.70 1568.67 515 0.17 2064.86 493.44 1571.42 520 0.17 2072.11 498.19 1573.93 525 0.17 2079.12 502.93 1576.19 530 0.17 2085.88 507.68 1578.20 535 0.17 2092.39 512.42 1579.97 540 0.16 2098.65 517.16 1581.49 545 0.16 2104.67 521.91 1582.76 550 0.16 2110.45 526.65 1583.79 555 0.16 2115.97 531.40 1584.58 560 0.16 2121.26 536.14 1585.11 565 0.16 2126.29 540.89 1585.40 570 0.16 2131.08 545.63 1585.45 575 0.16 2135.62 550.38 1585.25 580 0.16 2139.92 555.12 1584.80 585 0.16 2143.97 559.87 1584.10 590 0.15 2147.77 564.61 1583.16 595 0.15 2151.33 569.36 1581.98 600 0.15 2154.65 574.10 1580.55 605 0.15 2157.71 578.84 1578.87 610 0.15 2160.53 583.59 1576.94 615 0.15 2163.11 588.33 1574.77 620 0.15 2165.43 593.08 1572.36 625 0.15 2167.52 597.82 1569.69 630 0.15 2169.35 602.57 1566.78 635 0.14 2170.94 607.31 1563.63 640 0.14 2172.29 612.06 1560.23 645 0.14 2173.38 616.80 1556.58 650 0.14 2174.23 621.55 1552.69 655 0.14 2174.84 626.29 1548.55 660 0.14 2175.20 631.04 1544.16 665 0.14 2175.31 635.78 1539.53 670 0.14 2175.18 640.53 1534.65 675 0.14 2174.80 645.27 1529.53 680 0.14 2174.18 650.01 1524.16 685 0.13 2173.30 654.76 1518.54 690 0.13 2172.19 659.50 1512.68 695 0.13 2170.82 664.25 1506.57 700 0.13 2169.21 668.99 1500.22 705 0.13 2167.36 673.74 1493.62 710 0.13 2165.26 678.48 1486.77 715 0.13 2162.91 683.23 1479.68 720 0.13 2160.32 687.97 1472.35 725 0.13 2169.85 692.72 1477.13 730 0.13 2179.30 697.46 1481.84 735 0.13 2188.68 702.21 1486.48 740 0.13 2197.99 706.95 1491.04 745 0.13 2207.22 711.69 1495.52 750 0.13 2216.37 716.44 1499.93 755 0.12 2225.45 721.18 1504.26 760 0.12 2234.45 725.93 1508.52 765 0.12 2243.38 730.67 1512.70 770 0.12 2252.23 735.42 1516.81 775 0.12 2261.00 740.16 1520.84 780 0.12 2269.70 744.91 1524.80 785 0.12 2278.33 749.65 1528.68 790 0.12 2286.88 754.40 1532.48 795 0.12 2295.35 759.14 1536.21 800 0.12 2303.75 763.89 1539.87 805 0.12 2312.07 768.63 1543.44 810 0.12 2320.32 773.37 1546.95 815 0.12 2328.49 778.12 1550.37 820 0.12 2336.59 782.86 1553.73 825 0.12 2344.61 787.61 1557.00 830 0.12 2352.56 792.35 1560.20 835 0.12 2360.43 797.10 1563.33 840 0.12 2368.22 801.84 1566.38 845 0.12 2375.94 806.59 1569.36 850 0.12 2383.59 811.33 1572.25 855 0.12 2391.15 816.08 1575.08 860 0.12 2398.65 820.82 1577.83 865 0.12 2406.07 825.57 1580.50 870 0.12 2413.41 830.31 1583.10 875 0.12 2420.67 835.06 1585.62 880 0.12 2427.86 839.80 1588.06 885 0.12 2434.98 844.54 1590.44 890 0.12 2442.02 849.29 1592.73 895 0.12 2448.98 854.03 1594.95 900 0.12 2455.87 858.78 1597.10 905 0.12 2462.69 863.52 1599.16 910 0.11 2469.43 868.27 1601.16 915 0.11 2476.09 873.01 1603.08 920 0.11 2482.68 877.76 1604.92 925 0.11 2489.19 882.50 1606.69 930 0.11 2495.62 887.25 1608.38 935 0.11 2501.98 891.99 1609.99 940 0.11 2508.27 896.74 1611.53 945 0.11 2514.48 901.48 1613.00 950 0.11 2520.61 906.22 1614.39 955 0.11 2526.67 910.97 1615.70 960 0.11 2532.66 915.71 1616.94 965 0.11 2538.57 920.46 1618.11 970 0.11 2544.40 925.20 1619.19 975 0.11 2550.15 929.95 1620.21 980 0.11 2555.84 934.69 1621.14 985 0.11 2561.44 939.44 1622.01 990 0.11 2566.97 944.18 1622.79 995 0.11 2572.43 948.93 1623.50 1000 0.11 2577.81 953.67 1624.14 1005 0.11 2583.11 958.42 1624.70 1010 0.11 2588.34 963.16 1625.18 1015 0.11 2593.49 967.90 1625.59 1020 0.11 2598.57 972.65 1625.92 1025 0.11 2603.57 977.39 1626.18 1030 0.11 2608.50 982.14 1626.36 1035 0.11 2613.35 986.88 1626.47 1040 0.11 2618.13 991.63 1626.50 1045 0.11 2622.83 996.37 1626.46 1050 0.11 2627.45 1001.12 1626.34 1055 0.11 2632.00 1005.86 1626.14 1060 0.11 2636.48 1010.61 1625.87 1065 0.10 2640.88 1015.35 1625.53 1070 0.10 2645.20 1020.10 1625.10 1075 0.10 2649.45 1024.84 1624.61 1080 0.10 2653.62 1029.58 1624.04 1085 0.10 2657.72 1034.33 1623.39 1090 0.10 2661.74 1039.07 1622.66 1095 0.10 2665.68 1043.82 1621.87 1100 0.10 2669.55 1048.56 1620.99 1105 0.10 2673.35 1053.31 1620.04 1110 0.10 2677.07 1058.05 1619.02 1115 0.10 2680.71 1062.80 1617.92 1120 0.10 2684.28 1067.54 1616.74 1125 0.10 2687.77 1072.29 1615.49 1130 0.10 2691.19 1077.03 1614.16 1135 0.10 2694.53 1081.78 1612.76 1140 0.10 2697.80 1086.52 1611.28 1145 0.10 2700.99 1091.27 1609.73 1150 0.10 2704.11 1096.01 1608.10 1155 0.10 2707.15 1100.75 1606.39 1160 0.10 2710.11 1105.50 1604.61 1165 0.10 2713.00 1110.24 1602.76 1170 0.10 2715.81 1114.99 1600.83 1175 0.10 2718.55 1119.73 1598.82 1180 0.10 2721.22 1124.48 1596.74 1185 0.10 2723.80 1129.22 1594.58 1190 0.10 2726.31 1133.97 1592.35 1195 0.10 2728.75 1138.71 1590.04 1200 0.10 2731.11 1143.46 1587.66 1205 0.10 2733.40 1148.20 1585.20 1210 0.10 2735.61 1152.95 1582.66 1215 0.10 2737.74 1157.69 1580.05 1220 0.10 2739.80 1162.43 1577.37 1225 0.09 2741.78 1167.18 1574.61 1230 0.09 2743.69 1171.92 1571.77 1235 0.09 2745.53 1176.67 1568.86 1240 0.09 2747.28 1181.41 1565.87 1245 0.09 2748.96 1186.16 1562.81 1250 0.09 2750.57 1190.90 1559.67 1255 0.09 2752.10 1195.65 1556.45 1260 0.09 2753.56 1200.39 1553.17 1265 0.09 2754.94 1205.14 1549.80 1270 0.09 2756.24 1209.88 1546.36 1275 0.09 2757.47 1214.63 1542.84 1280 0.09 2758.62 1219.37 1539.25 1285 0.09 2759.70 1224.11 1535.59 1290 0.09 2760.70 1228.86 1531.84 1295 0.09 2761.63 1233.60 1528.03 1300 0.09 2762.48 1238.35 1524.13 1305 0.09 2763.26 1243.09 1520.16 1310 0.09 2763.96 1247.84 1516.12 1315 0.09 2764.58 1252.58 1512.00 1320 0.09 2765.13 1257.33 1507.81 1325 0.09 2765.61 1262.07 1503.54 1330 0.09 2766.01 1266.82 1499.19 1335 0.09 2766.33 1271.56 1494.77 1340 0.09 2766.58 1276.31 1490.27 1345 0.09 2766.75 1281.05 1485.70 1350 0.09 2766.85 1285.79 1481.05 1355 0.09 2766.87 1290.54 1476.33 1360 0.09 2766.81 1295.28 1471.53 1365 0.09 2766.68 1300.03 1466.66 1370 0.09 2766.48 1304.77 1461.71 1375 0.09 2766.20 1309.52 1456.68 1380 0.08 2765.84 1314.26 1451.58 1385 0.08 2765.41 1319.01 1446.40 1390 0.08 2764.90 1323.75 1441.15 1395 0.08 2764.32 1328.50 1435.83 1400 0.08 2763.66 1333.24 1430.42 1405 0.08 2762.93 1337.99 1424.94 1410 0.08 2762.12 1342.73 1419.39 1415 0.08 2761.24 1347.48 1413.76 1420 0.08 2760.28 1352.22 1408.06 1425 0.08 2759.24 1356.96 1402.28 1430 0.08 2758.13 1361.71 1396.42 1435 0.08 2756.95 1366.45 1390.49 1440 0.08 2755.68 1371.20 1384.48 Maximum Difference 1626.50 25 Year Storage Calculations ‐ Basin 22 (Developed) Rainfall Duration  (minutes) Intensity (inches/Hour)      EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference  ft3 EQ 5‐4 C 0.458  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 20333.00 ft2 5 4.67 301.87 5.19 296.67 Tc 5 Minutes 10 3.41 440.84 7.79 433.05 Qa 0.017 ft3 15 2.78 539.09 10.39 528.71 P24(25)0.952 20 2.42 625.71 12.98 612.73 25 2.06 665.79 15.58 650.21 30 1.70 659.32 18.17 641.15 35 1.58 712.80 20.77 692.03 40 1.45 750.16 23.37 726.79 45 1.33 771.40 25.96 745.44 50 1.20 776.53 28.56 747.97 55 1.08 765.53 31.16 734.38 60 0.95 738.44 33.75 704.69 65 0.92 770.15 36.35 733.80 70 0.88 797.26 38.94 758.32 75 0.85 819.79 41.54 778.25 80 0.81 837.73 44.14 793.59 85 0.77 851.07 46.73 804.34 90 0.74 859.83 49.33 810.50 95 0.70 864.00 51.93 812.08 100 0.67 863.58 54.52 809.06 105 0.63 858.57 57.12 801.45 110 0.60 848.97 59.71 789.26 115 0.56 834.78 62.31 772.47 120 0.53 816.01 64.91 751.10 125 0.51 827.79 67.50 760.28 130 0.50 837.79 70.10 767.69 135 0.48 846.02 72.70 773.32 140 0.47 852.46 75.29 777.17 145 0.46 857.13 77.89 779.25 150 0.44 860.03 80.48 779.54 155 0.43 861.14 83.08 778.06 160 0.42 860.48 85.68 774.80 165 0.40 858.04 88.27 769.77 170 0.39 853.82 90.87 762.95 175 0.37 847.83 93.47 754.36 180 0.36 840.05 96.06 743.99 185 0.36 852.82 98.66 754.17 190 0.35 865.03 101.25 763.77 195 0.35 876.65 103.85 772.80 200 0.34 887.71 106.45 781.27 205 0.34 898.20 109.04 789.16 210 0.33 908.12 111.64 796.48 215 0.33 917.46 114.24 803.23 220 0.33 926.24 116.83 809.41 225 0.32 934.44 119.43 815.01 230 0.32 942.07 122.02 820.05 235 0.31 949.14 124.62 824.52 240 0.31 955.63 127.22 828.41 245 0.30 961.55 129.81 831.73 250 0.30 966.90 132.41 834.49 255 0.29 971.67 135.01 836.67 260 0.29 975.88 137.60 838.28 265 0.29 979.52 140.20 839.32 270 0.28 982.58 142.79 839.79 275 0.28 985.07 145.39 839.68 280 0.27 987.00 147.99 839.01 285 0.27 988.35 150.58 837.77 290 0.26 989.13 153.18 835.95 295 0.26 989.34 155.78 833.56 300 0.25 988.98 158.37 830.61 305 0.25 988.05 160.97 827.08 310 0.25 986.54 163.56 822.98 315 0.24 984.47 166.16 818.31 320 0.24 981.82 168.76 813.07 325 0.23 978.61 171.35 807.26 330 0.23 974.82 173.95 800.87 335 0.22 970.46 176.55 793.92 340 0.22 965.53 179.14 786.39 345 0.22 960.03 181.74 778.30 350 0.21 953.96 184.33 769.63 355 0.21 947.32 186.93 760.39 360 0.20 940.11 189.53 750.59 365 0.20 948.26 192.12 756.13 370 0.20 956.26 194.72 761.54 375 0.20 964.14 197.32 766.82 380 0.20 971.87 199.91 771.96 385 0.20 979.48 202.51 776.97 390 0.20 986.95 205.10 781.84 395 0.19 994.28 207.70 786.58 400 0.19 1001.48 210.30 791.18 405 0.19 1008.54 212.89 795.65 410 0.19 1015.47 215.49 799.98 415 0.19 1022.27 218.09 804.18 420 0.19 1028.93 220.68 808.25 425 0.19 1035.45 223.28 812.18 430 0.19 1041.85 225.87 815.97 435 0.19 1048.10 228.47 819.63 440 0.19 1054.22 231.07 823.16 445 0.18 1060.21 233.66 826.55 450 0.18 1066.06 236.26 829.80 455 0.18 1071.78 238.86 832.93 460 0.18 1077.37 241.45 835.91 465 0.18 1082.81 244.05 838.77 470 0.18 1088.13 246.64 841.48 475 0.18 1093.31 249.24 844.07 480 0.18 1098.35 251.84 846.51 485 0.18 1103.26 254.43 848.83 490 0.17 1108.04 257.03 851.01 495 0.17 1112.68 259.63 853.05 500 0.17 1117.18 262.22 854.96 505 0.17 1121.55 264.82 856.74 510 0.17 1125.79 267.41 858.38 515 0.17 1129.89 270.01 859.88 520 0.17 1133.86 272.61 861.25 525 0.17 1137.69 275.20 862.49 530 0.17 1141.39 277.80 863.59 535 0.17 1144.95 280.40 864.56 540 0.16 1148.38 282.99 865.39 545 0.16 1151.68 285.59 866.09 550 0.16 1154.83 288.18 866.65 555 0.16 1157.86 290.78 867.08 560 0.16 1160.75 293.38 867.37 565 0.16 1163.50 295.97 867.53 570 0.16 1166.13 298.57 867.56 575 0.16 1168.61 301.17 867.45 580 0.16 1170.96 303.76 867.20 585 0.16 1173.18 306.36 866.82 590 0.15 1175.26 308.95 866.31 595 0.15 1177.21 311.55 865.66 600 0.15 1179.02 314.15 864.87 605 0.15 1180.70 316.74 863.95 610 0.15 1182.24 319.34 862.90 615 0.15 1183.65 321.94 861.71 620 0.15 1184.92 324.53 860.39 625 0.15 1186.06 327.13 858.93 630 0.15 1187.07 329.72 857.34 635 0.14 1187.94 332.32 855.62 640 0.14 1188.67 334.92 853.76 645 0.14 1189.27 337.51 851.76 650 0.14 1189.74 340.11 849.63 655 0.14 1190.07 342.71 847.36 660 0.14 1190.27 345.30 844.96 665 0.14 1190.33 347.90 842.43 670 0.14 1190.26 350.49 839.76 675 0.14 1190.05 353.09 836.96 680 0.14 1189.71 355.69 834.02 685 0.13 1189.23 358.28 830.95 690 0.13 1188.62 360.88 827.74 695 0.13 1187.87 363.48 824.40 700 0.13 1186.99 366.07 820.92 705 0.13 1185.98 368.67 817.31 710 0.13 1184.83 371.26 813.56 715 0.13 1183.54 373.86 809.68 720 0.13 1182.12 376.46 805.67 725 0.13 1187.34 379.05 808.29 730 0.13 1192.51 381.65 810.86 735 0.13 1197.65 384.25 813.40 740 0.13 1202.74 386.84 815.89 745 0.13 1207.79 389.44 818.35 750 0.13 1212.80 392.03 820.76 755 0.12 1217.76 394.63 823.13 760 0.12 1222.69 397.23 825.46 765 0.12 1227.57 399.82 827.75 770 0.12 1232.42 402.42 830.00 775 0.12 1237.22 405.02 832.20 780 0.12 1241.98 407.61 834.37 785 0.12 1246.70 410.21 836.49 790 0.12 1251.38 412.81 838.57 795 0.12 1256.02 415.40 840.61 800 0.12 1260.61 418.00 842.61 805 0.12 1265.17 420.59 844.57 810 0.12 1269.68 423.19 846.49 815 0.12 1274.15 425.79 848.36 820 0.12 1278.58 428.38 850.20 825 0.12 1282.97 430.98 851.99 830 0.12 1287.32 433.58 853.74 835 0.12 1291.62 436.17 855.45 840 0.12 1295.89 438.77 857.12 845 0.12 1300.11 441.36 858.75 850 0.12 1304.30 443.96 860.34 855 0.12 1308.44 446.56 861.88 860 0.12 1312.54 449.15 863.39 865 0.12 1316.60 451.75 864.85 870 0.12 1320.61 454.35 866.27 875 0.12 1324.59 456.94 867.65 880 0.12 1328.53 459.54 868.99 885 0.12 1332.42 462.13 870.29 890 0.12 1336.27 464.73 871.54 895 0.12 1340.08 467.33 872.76 900 0.12 1343.85 469.92 873.93 905 0.12 1347.58 472.52 875.06 910 0.11 1351.27 475.12 876.15 915 0.11 1354.91 477.71 877.20 920 0.11 1358.52 480.31 878.21 925 0.11 1362.08 482.90 879.18 930 0.11 1365.60 485.50 880.10 935 0.11 1369.08 488.10 880.99 940 0.11 1372.52 490.69 881.83 945 0.11 1375.92 493.29 882.63 950 0.11 1379.28 495.89 883.39 955 0.11 1382.59 498.48 884.11 960 0.11 1385.87 501.08 884.79 965 0.11 1389.10 503.67 885.43 970 0.11 1392.29 506.27 886.02 975 0.11 1395.44 508.87 886.58 980 0.11 1398.55 511.46 887.09 985 0.11 1401.62 514.06 887.56 990 0.11 1404.65 516.66 887.99 995 0.11 1407.63 519.25 888.38 1000 0.11 1410.57 521.85 888.73 1005 0.11 1413.48 524.44 889.03 1010 0.11 1416.34 527.04 889.30 1015 0.11 1419.16 529.64 889.52 1020 0.11 1421.94 532.23 889.70 1025 0.11 1424.67 534.83 889.84 1030 0.11 1427.37 537.43 889.94 1035 0.11 1430.02 540.02 890.00 1040 0.11 1432.64 542.62 890.02 1045 0.11 1435.21 545.21 890.00 1050 0.11 1437.74 547.81 889.93 1055 0.11 1440.23 550.41 889.82 1060 0.11 1442.68 553.00 889.68 1065 0.10 1445.09 555.60 889.49 1070 0.10 1447.45 558.20 889.26 1075 0.10 1449.78 560.79 888.98 1080 0.10 1452.06 563.39 888.67 1085 0.10 1454.30 565.98 888.32 1090 0.10 1456.50 568.58 887.92 1095 0.10 1458.66 571.18 887.48 1100 0.10 1460.78 573.77 887.00 1105 0.10 1462.85 576.37 886.49 1110 0.10 1464.89 578.97 885.92 1115 0.10 1466.88 581.56 885.32 1120 0.10 1468.84 584.16 884.68 1125 0.10 1470.75 586.75 883.99 1130 0.10 1472.62 589.35 883.27 1135 0.10 1474.45 591.95 882.50 1140 0.10 1476.23 594.54 881.69 1145 0.10 1477.98 597.14 880.84 1150 0.10 1479.69 599.74 879.95 1155 0.10 1481.35 602.33 879.02 1160 0.10 1482.97 604.93 878.04 1165 0.10 1484.55 607.52 877.03 1170 0.10 1486.09 610.12 875.97 1175 0.10 1487.59 612.72 874.87 1180 0.10 1489.05 615.31 873.73 1185 0.10 1490.46 617.91 872.55 1190 0.10 1491.84 620.51 871.33 1195 0.10 1493.17 623.10 870.07 1200 0.10 1494.46 625.70 868.76 1205 0.10 1495.71 628.29 867.42 1210 0.10 1496.92 630.89 866.03 1215 0.10 1498.09 633.49 864.60 1220 0.10 1499.22 636.08 863.13 1225 0.09 1500.30 638.68 861.62 1230 0.09 1501.35 641.28 860.07 1235 0.09 1502.35 643.87 858.48 1240 0.09 1503.31 646.47 856.84 1245 0.09 1504.23 649.06 855.17 1250 0.09 1505.11 651.66 853.45 1255 0.09 1505.95 654.26 851.69 1260 0.09 1506.74 656.85 849.89 1265 0.09 1507.50 659.45 848.05 1270 0.09 1508.21 662.05 846.17 1275 0.09 1508.89 664.64 844.24 1280 0.09 1509.52 667.24 842.28 1285 0.09 1510.11 669.83 840.27 1290 0.09 1510.65 672.43 838.22 1295 0.09 1511.16 675.03 836.13 1300 0.09 1511.63 677.62 834.00 1305 0.09 1512.05 680.22 831.83 1310 0.09 1512.44 682.82 829.62 1315 0.09 1512.78 685.41 827.37 1320 0.09 1513.08 688.01 825.07 1325 0.09 1513.34 690.60 822.73 1330 0.09 1513.56 693.20 820.36 1335 0.09 1513.73 695.80 817.94 1340 0.09 1513.87 698.39 815.48 1345 0.09 1513.96 700.99 812.97 1350 0.09 1514.02 703.59 810.43 1355 0.09 1514.03 706.18 807.85 1360 0.09 1514.00 708.78 805.22 1365 0.09 1513.93 711.37 802.55 1370 0.09 1513.82 713.97 799.84 1375 0.09 1513.66 716.57 797.09 1380 0.08 1513.47 719.16 794.30 1385 0.08 1513.23 721.76 791.47 1390 0.08 1512.95 724.36 788.60 1395 0.08 1512.63 726.95 785.68 1400 0.08 1512.27 729.55 782.73 1405 0.08 1511.87 732.14 779.73 1410 0.08 1511.43 734.74 776.69 1415 0.08 1510.95 737.34 773.61 1420 0.08 1510.42 739.93 770.49 1425 0.08 1509.86 742.53 767.33 1430 0.08 1509.25 745.13 764.12 1435 0.08 1508.60 747.72 760.88 1440 0.08 1507.91 750.32 757.59 Maximum Difference 890.02 25 Year Storage Calculations ‐ Basin 22 (Pre) Rainfall Duration  (minutes) Intensity (inches/Hour)       EQ 5‐1 Volume In ft3   EQ 5‐2 Volume Out  ft3 EQ 5‐3 Volume Difference ft3  EQ 5‐4 C 0.370  (Td)NOAA Vi=(1/720)*C*I*Td*A Vo=30(1+Tc/Td)*Qa*Td  Vd=Vi‐Vo A 20333.00 ft2 5 4.67 243.98 4.20 239.79 Tc 5 Minutes 10 3.41 356.31 6.30 350.01 Qa 0.014 ft3 15 2.78 435.72 8.39 427.33 P24(25)0.952 20 2.42 505.73 10.49 495.23 25 2.06 538.12 12.59 525.53 30 1.70 532.89 14.69 518.21 35 1.58 576.12 16.79 559.33 40 1.45 606.31 18.89 587.43 45 1.33 623.48 20.98 602.50 50 1.20 627.62 23.08 604.54 55 1.08 618.74 25.18 593.56 60 0.95 596.84 27.28 569.56 65 0.92 622.47 29.38 593.09 Storage Volume 170.66 70 0.88 644.38 31.48 612.91 75 0.85 662.59 33.57 629.02 80 0.81 677.09 35.67 641.42 85 0.77 687.88 37.77 650.11 90 0.74 694.96 39.87 655.09 95 0.70 698.33 41.97 656.36 100 0.67 697.99 44.07 653.92 105 0.63 693.94 46.17 647.77 110 0.60 686.18 48.26 637.92 115 0.56 674.71 50.36 624.35 120 0.53 659.53 52.46 607.07 125 0.51 669.06 54.56 614.50 130 0.50 677.14 56.66 620.48 135 0.48 683.79 58.76 625.03 140 0.47 689.00 60.85 628.15 145 0.46 692.78 62.95 629.82 150 0.44 695.11 65.05 630.06 155 0.43 696.01 67.15 628.87 160 0.42 695.48 69.25 626.23 165 0.40 693.51 71.35 622.16 170 0.39 690.10 73.44 616.65 175 0.37 685.25 75.54 609.71 180 0.36 678.97 77.64 601.33 185 0.36 689.29 79.74 609.55 190 0.35 699.15 81.84 617.32 195 0.35 708.55 83.94 624.62 200 0.34 717.49 86.04 631.46 205 0.34 725.97 88.13 637.83 210 0.33 733.98 90.23 643.75 215 0.33 741.54 92.33 649.21 220 0.33 748.63 94.43 654.20 225 0.32 755.26 96.53 658.73 230 0.32 761.43 98.63 662.80 235 0.31 767.14 100.72 666.41 240 0.31 772.38 102.82 669.56 245 0.30 777.17 104.92 672.25 250 0.30 781.49 107.02 674.47 255 0.29 785.35 109.12 676.23 260 0.29 788.75 111.22 677.54 265 0.29 791.69 113.31 678.38 270 0.28 794.17 115.41 678.75 275 0.28 796.18 117.51 678.67 280 0.27 797.74 119.61 678.13 285 0.27 798.83 121.71 677.12 290 0.26 799.46 123.81 675.65 295 0.26 799.63 125.90 673.73 300 0.25 799.34 128.00 671.34 305 0.25 798.59 130.10 668.48 310 0.25 797.37 132.20 665.17 315 0.24 795.69 134.30 661.40 320 0.24 793.56 136.40 657.16 325 0.23 790.96 138.50 652.46 330 0.23 787.90 140.59 647.30 335 0.22 784.37 142.69 641.68 340 0.22 780.39 144.79 635.60 345 0.22 775.94 146.89 629.06 350 0.21 771.04 148.99 622.05 355 0.21 765.67 151.09 614.58 360 0.20 759.84 153.18 606.66 365 0.20 766.42 155.28 611.14 370 0.20 772.90 157.38 615.52 375 0.20 779.26 159.48 619.78 380 0.20 785.51 161.58 623.94 385 0.20 791.66 163.68 627.98 390 0.20 797.70 165.77 631.92 395 0.19 803.62 167.87 635.75 400 0.19 809.44 169.97 639.47 405 0.19 815.15 172.07 643.08 410 0.19 820.75 174.17 646.58 415 0.19 826.24 176.27 649.98 420 0.19 831.63 178.37 653.26 425 0.19 836.90 180.46 656.44 430 0.19 842.07 182.56 659.51 435 0.19 847.12 184.66 662.46 440 0.19 852.07 186.76 665.31 445 0.18 856.91 188.86 668.05 450 0.18 861.64 190.96 670.69 455 0.18 866.26 193.05 673.21 460 0.18 870.78 195.15 675.62 465 0.18 875.18 197.25 677.93 470 0.18 879.48 199.35 680.13 475 0.18 883.66 201.45 682.21 480 0.18 887.74 203.55 684.19 485 0.18 891.71 205.64 686.06 490 0.17 895.57 207.74 687.82 495 0.17 899.32 209.84 689.48 500 0.17 902.96 211.94 691.02 505 0.17 906.49 214.04 692.45 510 0.17 909.92 216.14 693.78 515 0.17 913.23 218.24 695.00 520 0.17 916.44 220.33 696.10 525 0.17 919.54 222.43 697.10 530 0.17 922.52 224.53 697.99 535 0.17 925.40 226.63 698.78 540 0.16 928.18 228.73 699.45 545 0.16 930.84 230.83 700.01 550 0.16 933.39 232.92 700.47 555 0.16 935.84 235.02 700.81 560 0.16 938.17 237.12 701.05 565 0.16 940.40 239.22 701.18 570 0.16 942.52 241.32 701.20 575 0.16 944.53 243.42 701.11 580 0.16 946.43 245.51 700.91 585 0.16 948.22 247.61 700.60 590 0.15 949.90 249.71 700.19 595 0.15 951.47 251.81 699.66 600 0.15 952.94 253.91 699.03 605 0.15 954.30 256.01 698.29 610 0.15 955.54 258.11 697.44 615 0.15 956.68 260.20 696.48 620 0.15 957.71 262.30 695.41 625 0.15 958.63 264.40 694.23 630 0.15 959.44 266.50 692.94 635 0.14 960.15 268.60 691.55 640 0.14 960.74 270.70 690.04 645 0.14 961.23 272.79 688.43 650 0.14 961.60 274.89 686.71 655 0.14 961.87 276.99 684.88 660 0.14 962.03 279.09 682.94 665 0.14 962.08 281.19 680.89 670 0.14 962.02 283.29 678.73 675 0.14 961.85 285.38 676.47 680 0.14 961.58 287.48 674.09 685 0.13 961.19 289.58 671.61 690 0.13 960.70 291.68 669.02 695 0.13 960.09 293.78 666.32 700 0.13 959.38 295.88 663.51 705 0.13 958.56 297.98 660.59 710 0.13 957.63 300.07 657.56 715 0.13 956.59 302.17 654.42 720 0.13 955.45 304.27 651.18 725 0.13 959.66 306.37 653.29 730 0.13 963.84 308.47 655.38 735 0.13 967.99 310.57 657.43 740 0.13 972.11 312.66 659.44 745 0.13 976.19 314.76 661.43 750 0.13 980.24 316.86 663.38 755 0.12 984.25 318.96 665.29 760 0.12 988.23 321.06 667.18 765 0.12 992.18 323.16 669.03 770 0.12 996.10 325.25 670.84 775 0.12 999.98 327.35 672.63 780 0.12 1003.83 329.45 674.37 785 0.12 1007.64 331.55 676.09 790 0.12 1011.42 333.65 677.77 795 0.12 1015.17 335.75 679.42 800 0.12 1018.88 337.84 681.04 805 0.12 1022.57 339.94 682.62 810 0.12 1026.21 342.04 684.17 815 0.12 1029.83 344.14 685.69 820 0.12 1033.41 346.24 687.17 825 0.12 1036.96 348.34 688.62 830 0.12 1040.47 350.44 690.03 835 0.12 1043.95 352.53 691.42 840 0.12 1047.40 354.63 692.77 845 0.12 1050.81 356.73 694.08 850 0.12 1054.19 358.83 695.36 855 0.12 1057.54 360.93 696.61 860 0.12 1060.85 363.03 697.83 865 0.12 1064.13 365.12 699.01 870 0.12 1067.38 367.22 700.16 875 0.12 1070.60 369.32 701.27 880 0.12 1073.78 371.42 702.36 885 0.12 1076.92 373.52 703.40 890 0.12 1080.04 375.62 704.42 895 0.12 1083.12 377.71 705.40 900 0.12 1086.16 379.81 706.35 905 0.12 1089.18 381.91 707.27 910 0.11 1092.16 384.01 708.15 915 0.11 1095.10 386.11 709.00 920 0.11 1098.02 388.21 709.81 925 0.11 1100.90 390.31 710.59 930 0.11 1103.74 392.40 711.34 935 0.11 1106.56 394.50 712.05 940 0.11 1109.34 396.60 712.74 945 0.11 1112.08 398.70 713.38 950 0.11 1114.80 400.80 714.00 955 0.11 1117.48 402.90 714.58 960 0.11 1120.12 404.99 715.13 965 0.11 1122.74 407.09 715.64 970 0.11 1125.32 409.19 716.12 975 0.11 1127.86 411.29 716.57 980 0.11 1130.37 413.39 716.99 985 0.11 1132.85 415.49 717.37 990 0.11 1135.30 417.58 717.71 995 0.11 1137.71 419.68 718.03 1000 0.11 1140.09 421.78 718.31 1005 0.11 1142.44 423.88 718.56 1010 0.11 1144.75 425.98 718.77 1015 0.11 1147.03 428.08 718.95 1020 0.11 1149.28 430.18 719.10 1025 0.11 1151.49 432.27 719.21 1030 0.11 1153.67 434.37 719.29 1035 0.11 1155.81 436.47 719.34 1040 0.11 1157.92 438.57 719.36 1045 0.11 1160.00 440.67 719.34 1050 0.11 1162.05 442.77 719.28 1055 0.11 1164.06 444.86 719.20 1060 0.11 1166.04 446.96 719.08 1065 0.10 1167.99 449.06 718.92 1070 0.10 1169.90 451.16 718.74 1075 0.10 1171.78 453.26 718.52 1080 0.10 1173.62 455.36 718.26 1085 0.10 1175.43 457.45 717.98 1090 0.10 1177.21 459.55 717.66 1095 0.10 1178.96 461.65 717.31 1100 0.10 1180.67 463.75 716.92 1105 0.10 1182.35 465.85 716.50 1110 0.10 1183.99 467.95 716.04 1115 0.10 1185.60 470.05 715.56 1120 0.10 1187.18 472.14 715.04 1125 0.10 1188.73 474.24 714.48 1130 0.10 1190.24 476.34 713.90 1135 0.10 1191.72 478.44 713.28 1140 0.10 1193.16 480.54 712.62 1145 0.10 1194.57 482.64 711.94 1150 0.10 1195.95 484.73 711.22 1155 0.10 1197.29 486.83 710.46 1160 0.10 1198.61 488.93 709.67 1165 0.10 1199.88 491.03 708.85 1170 0.10 1201.13 493.13 708.00 1175 0.10 1202.34 495.23 707.11 1180 0.10 1203.52 497.32 706.19 1185 0.10 1204.66 499.42 705.24 1190 0.10 1205.77 501.52 704.25 1195 0.10 1206.85 503.62 703.23 1200 0.10 1207.89 505.72 702.18 1205 0.10 1208.90 507.82 701.09 1210 0.10 1209.88 509.92 699.97 1215 0.10 1210.83 512.01 698.81 1220 0.10 1211.74 514.11 697.62 1225 0.09 1212.61 516.21 696.40 1230 0.09 1213.46 518.31 695.15 1235 0.09 1214.27 520.41 693.86 1240 0.09 1215.05 522.51 692.54 1245 0.09 1215.79 524.60 691.19 1250 0.09 1216.50 526.70 689.80 1255 0.09 1217.18 528.80 688.38 1260 0.09 1217.82 530.90 686.92 1265 0.09 1218.43 533.00 685.43 1270 0.09 1219.01 535.10 683.91 1275 0.09 1219.55 537.19 682.36 1280 0.09 1220.06 539.29 680.77 1285 0.09 1220.54 541.39 679.15 1290 0.09 1220.98 543.49 677.49 1295 0.09 1221.39 545.59 675.80 1300 0.09 1221.77 547.69 674.08 1305 0.09 1222.11 549.78 672.33 1310 0.09 1222.42 551.88 670.54 1315 0.09 1222.70 553.98 668.72 1320 0.09 1222.94 556.08 666.86 1325 0.09 1223.15 558.18 664.97 1330 0.09 1223.33 560.28 663.05 1335 0.09 1223.47 562.38 661.09 1340 0.09 1223.58 564.47 659.10 1345 0.09 1223.66 566.57 657.08 1350 0.09 1223.70 568.67 655.03 1355 0.09 1223.71 570.77 652.94 1360 0.09 1223.68 572.87 650.82 1365 0.09 1223.63 574.97 648.66 1370 0.09 1223.54 577.06 646.47 1375 0.09 1223.41 579.16 644.25 1380 0.08 1223.25 581.26 641.99 1385 0.08 1223.06 583.36 639.70 1390 0.08 1222.84 585.46 637.38 1395 0.08 1222.58 587.56 635.02 1400 0.08 1222.29 589.65 632.64 1405 0.08 1221.97 591.75 630.21 1410 0.08 1221.61 593.85 627.76 1415 0.08 1221.22 595.95 625.27 1420 0.08 1220.79 598.05 622.74 1425 0.08 1220.33 600.15 620.19 1430 0.08 1219.84 602.25 617.60 1435 0.08 1219.32 604.34 614.98 1440 0.08 1218.76 606.44 612.32 Maximum Difference 719.36 Detetnion Basin Storage Storage System Basins Total Capacity (Derived from TIN Surface) Required Capacity (Name) (#)(ft3) (ft 3) Existing Detention Basin 17,19,20, 21 2452.68 2363 Drywell StorageDrywell Basins DiameterStorage Depth Perforated DepthInternal VolumeExternal (18" of Screened Rock) Volume Total CapacityRequired Capacity(Name) (#) D (ft) H (ft) P (ft)π*H*(D/2)2) (ft3) 0.3*π*P*((D/2)+1.5)2 ‐ (D/2)2) (ft3) (ft3) (ft3)DRYWELL A1 6 24 12679 127 806793DRYWELL B2 4 11 4138 31 169159DRYWELL C3 6 14 8396 85 481479DRYWELL D4 6 12 4339 42 382367DRYWELL E544 450 31 811DRYWELL F6 5 10 4196 37 233223DRYWELL G7 6 10 4283 42 325304DRYWELL H8 4 7 488 31 119111DRYWELL I9 6 9 4254 42 297281DRYWELL K1149 4113 31 144139DRYWELL M 13 4 10 4126 31 157152DRYWELL N 14 6 14 8396 85 481450DRYWELL O15 4 4 450 31 8162DRYWELL P 16 6 14 8396 85 481426DRYWELL R18 5 8 4157 37 194187 Appendix J Basin and Subbasin Delineation EX6BASINS 1ROARING FORK ENGINEERING 592 HIGHWAY 133 CARBONDALE COLORADO, 81623 PH: (970)340-4130 F:(866)876-5873CHECKED BY:#DESCRIPTION DATE DRAWN BYCONSTRUCTION DRAWN BY:JOB #:ASCENDIGO ADVENTURE CAMP CARBONDALE, CO 81623 2020-36NOT FORVJTAMR1 LAND USE 01.15.2021 VJT EX7BASINS 2ROARING FORK ENGINEERING 592 HIGHWAY 133 CARBONDALE COLORADO, 81623 PH: (970)340-4130 F:(866)876-5873CHECKED BY:#DESCRIPTION DATE DRAWN BYCONSTRUCTION DRAWN BY:JOB #:ASCENDIGO ADVENTURE CAMP CARBONDALE, CO 81623 2020-36NOT FORVJTAMR1 LAND USE 01.15.2021 VJT EX8SUBBASINS 1ROARING FORK ENGINEERING 592 HIGHWAY 133 CARBONDALE COLORADO, 81623 PH: (970)340-4130 F:(866)876-5873CHECKED BY:#DESCRIPTION DATE DRAWN BYCONSTRUCTION DRAWN BY:JOB #:ASCENDIGO ADVENTURE CAMP CARBONDALE, CO 81623 2020-36NOT FORVJTAMR1 LAND USE 01.15.2021 VJT EX9SUBBASINS 2ROARING FORK ENGINEERING 592 HIGHWAY 133 CARBONDALE COLORADO, 81623 PH: (970)340-4130 F:(866)876-5873CHECKED BY:#DESCRIPTION DATE DRAWN BYCONSTRUCTION DRAWN BY:JOB #:ASCENDIGO ADVENTURE CAMP CARBONDALE, CO 81623 2020-36NOT FORVJTAMR1 LAND USE 01.15.2021 VJT Appendix K NOAA Rainfall Data 12/7/2020 Precipitation Frequency Data Server https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=39.4133&lon=-107.1180&data=depth&units=english&series=pds 1/3 NOAA Atlas 14, Volume 8, Version 2 Location name: Carbondale, Colorado, USA* Latitude: 39.4133°, Longitude: -107.118° Elevation: 7042.81 ft** * source: ESRI Maps ** source: USGS POINT PRECIPITATION FREQUENCY ESTIMATES Sanja Perica, Deborah Martin, Sandra Pavlovic, Ishani Roy, Michael St. Laurent, Carl Trypaluk, Dale Unruh, Michael Yekta, Geoffery Bonnin NOAA, National Weather Service, Silver Spring, Maryland PF_tabular | PF_graphical | Maps_&_aerials PF tabular PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches)1 Duration Average recurrence interval (years) 1 2 5 10 25 50 100 200 500 1000 5-min 0.109 (0.088‑0.140) 0.161 (0.129‑0.205) 0.241 (0.193‑0.310) 0.305 (0.243‑0.394) 0.389 (0.293‑0.517) 0.450 (0.331‑0.611) 0.507 (0.360‑0.712) 0.563 (0.381‑0.818) 0.631 (0.409‑0.952) 0.679 (0.430‑1.05) 10-min 0.160 (0.129‑0.204) 0.235 (0.189‑0.301) 0.354 (0.283‑0.453) 0.447 (0.355‑0.577) 0.569 (0.429‑0.758) 0.659 (0.485‑0.895) 0.743 (0.527‑1.04) 0.824 (0.557‑1.20) 0.924 (0.598‑1.39) 0.995 (0.629‑1.54) 15-min 0.195 (0.157‑0.249) 0.287 (0.230‑0.367) 0.431 (0.345‑0.553) 0.545 (0.433‑0.703) 0.694 (0.523‑0.924) 0.803 (0.592‑1.09) 0.906 (0.643‑1.27) 1.00 (0.680‑1.46) 1.13 (0.730‑1.70) 1.21 (0.768‑1.88) 30-min 0.262 (0.211‑0.335) 0.372 (0.298‑0.475) 0.542 (0.434‑0.695) 0.677 (0.537‑0.872) 0.850 (0.640‑1.13) 0.975 (0.718‑1.32) 1.09 (0.774‑1.53) 1.20 (0.812‑1.75) 1.34 (0.865‑2.01) 1.43 (0.904‑2.22) 60-min 0.346 (0.278‑0.442) 0.458 (0.368‑0.585) 0.634 (0.507‑0.812) 0.772 (0.613‑0.995) 0.952 (0.718‑1.26) 1.08 (0.798‑1.47) 1.20 (0.854‑1.69) 1.32 (0.893‑1.92) 1.46 (0.948‑2.20) 1.56 (0.988‑2.42) 2-hr 0.430 (0.349‑0.542) 0.545 (0.442‑0.687) 0.725 (0.585‑0.918) 0.867 (0.696‑1.11) 1.05 (0.805‑1.38) 1.19 (0.887‑1.59) 1.32 (0.945‑1.82) 1.44 (0.985‑2.06) 1.59 (1.04‑2.36) 1.70 (1.08‑2.59) 3-hr 0.503 (0.411‑0.630) 0.608 (0.496‑0.762) 0.775 (0.629‑0.974) 0.908 (0.733‑1.15) 1.09 (0.837‑1.42) 1.22 (0.916‑1.62) 1.34 (0.972‑1.85) 1.47 (1.01‑2.09) 1.62 (1.07‑2.40) 1.74 (1.12‑2.63) 6-hr 0.662 (0.546‑0.818) 0.751 (0.618‑0.929) 0.900 (0.738‑1.12) 1.03 (0.837‑1.28) 1.21 (0.949‑1.57) 1.35 (1.03‑1.79) 1.50 (1.10‑2.05) 1.65 (1.16‑2.34) 1.86 (1.25‑2.72) 2.02 (1.31‑3.02) 12-hr 0.832 (0.694‑1.02) 0.943 (0.785‑1.15) 1.13 (0.939‑1.39) 1.30 (1.07‑1.60) 1.54 (1.22‑1.98) 1.73 (1.34‑2.27) 1.93 (1.44‑2.61) 2.14 (1.52‑3.00) 2.44 (1.65‑3.53) 2.67 (1.75‑3.93) 24-hr 1.01 (0.852‑1.22) 1.16 (0.974‑1.40) 1.41 (1.18‑1.71) 1.63 (1.36‑1.99) 1.95 (1.57‑2.49) 2.21 (1.73‑2.87) 2.48 (1.87‑3.32) 2.77 (1.99‑3.83) 3.17 (2.17‑4.52) 3.48 (2.31‑5.05) 2-day 1.21 (1.03‑1.44) 1.38 (1.18‑1.65) 1.69 (1.43‑2.02) 1.95 (1.64‑2.35) 2.34 (1.90‑2.95) 2.66 (2.10‑3.40) 2.99 (2.27‑3.94) 3.34 (2.42‑4.55) 3.83 (2.65‑5.39) 4.22 (2.83‑6.03) 3-day 1.35 (1.15‑1.59) 1.54 (1.32‑1.82) 1.87 (1.60‑2.23) 2.16 (1.83‑2.58) 2.58 (2.11‑3.22) 2.93 (2.33‑3.71) 3.28 (2.51‑4.28) 3.65 (2.66‑4.93) 4.17 (2.91‑5.82) 4.58 (3.09‑6.49) 4-day 1.46 (1.26‑1.72) 1.67 (1.43‑1.97) 2.02 (1.73‑2.39) 2.33 (1.98‑2.76) 2.76 (2.27‑3.42) 3.12 (2.49‑3.93) 3.48 (2.67‑4.51) 3.87 (2.83‑5.18) 4.39 (3.07‑6.08) 4.81 (3.26‑6.76) 7-day 1.76 (1.52‑2.05) 1.98 (1.72‑2.31) 2.36 (2.04‑2.76) 2.68 (2.30‑3.15) 3.14 (2.60‑3.84) 3.51 (2.82‑4.36) 3.88 (3.01‑4.97) 4.28 (3.15‑5.65) 4.81 (3.39‑6.57) 5.23 (3.58‑7.26) 10-day 2.01 (1.75‑2.32) 2.25 (1.96‑2.60) 2.65 (2.30‑3.07) 2.99 (2.58‑3.49) 3.47 (2.88‑4.20) 3.85 (3.11‑4.74) 4.23 (3.30‑5.37) 4.64 (3.44‑6.08) 5.19 (3.68‑7.02) 5.61 (3.86‑7.73) 20-day 2.71 (2.40‑3.10) 3.01 (2.65‑3.44) 3.50 (3.07‑4.01) 3.91 (3.41‑4.51) 4.49 (3.77‑5.35) 4.93 (4.04‑5.98) 5.39 (4.24‑6.72) 5.85 (4.39‑7.54) 6.47 (4.64‑8.61) 6.95 (4.84‑9.43) 30-day 3.30 (2.93‑3.74) 3.67 (3.25‑4.16) 4.26 (3.76‑4.84) 4.75 (4.17‑5.43) 5.42 (4.57‑6.39) 5.93 (4.88‑7.12) 6.44 (5.10‑7.96) 6.96 (5.25‑8.87) 7.64 (5.51‑10.1) 8.15 (5.71‑11.0) 45-day 4.06 (3.63‑4.56) 4.52 (4.04‑5.09) 5.26 (4.68‑5.94) 5.86 (5.18‑6.65) 6.67 (5.65‑7.78) 7.27 (6.01‑8.63) 7.85 (6.24‑9.59) 8.42 (6.38‑10.6) 9.16 (6.64‑11.9) 9.69 (6.84‑12.9) 60-day 4.71 (4.23‑5.26) 5.27 (4.73‑5.90) 6.15 (5.50‑6.90) 6.86 (6.09‑7.73) 7.78 (6.61‑8.99) 8.45 (7.01‑9.95) 9.09 (7.25‑11.0) 9.71 (7.38‑12.1) 10.5 (7.62‑13.5) 11.0 (7.80‑14.6) 1 Precipitation frequency (PF) estimates in this table are based on frequency analysis of partial duration series (PDS). Numbers in parenthesis are PF estimates at lower and upper bounds of the 90% confidence interval. The probability that precipitation frequency estimates (for a given duration and average recurrence interval) will be greater than the upper bound (or less than the lower bound) is 5%. Estimates at upper bounds are not checked against probable maximum precipitation (PMP) estimates and may be higher than currently valid PMP values. Please refer to NOAA Atlas 14 document for more information. Back to Top PF graphical 12/7/2020 Precipitation Frequency Data Server https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=39.4133&lon=-107.1180&data=depth&units=english&series=pds 2/3 Back to Top Maps & aerials Small scale terrain Large scale terrain + – 3km 2mi + – 100km 60mi 12/7/2020 Precipitation Frequency Data Server https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=39.4133&lon=-107.1180&data=depth&units=english&series=pds 3/3 Large scale map Large scale aerial Back to Top US Department of Commerce National Oceanic and Atmospheric Administration National Weather Service National Water Center 1325 East West Highway Silver Spring, MD 20910 Questions?: HDSC.Questions@noaa.gov Disclaimer + – 100km 60mi + – 100km 60mi 12/7/2020 Precipitation Frequency Data Server https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=39.4133&lon=-107.1180&data=intensity&units=english&series=pds 1/3 NOAA Atlas 14, Volume 8, Version 2 Location name: Carbondale, Colorado, USA* Latitude: 39.4133°, Longitude: -107.118° Elevation: 7042.81 ft** * source: ESRI Maps ** source: USGS POINT PRECIPITATION FREQUENCY ESTIMATES Sanja Perica, Deborah Martin, Sandra Pavlovic, Ishani Roy, Michael St. Laurent, Carl Trypaluk, Dale Unruh, Michael Yekta, Geoffery Bonnin NOAA, National Weather Service, Silver Spring, Maryland PF_tabular | PF_graphical | Maps_&_aerials PF tabular PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches/hour)1 Duration Average recurrence interval (years) 1 2 5 10 25 50 100 200 500 1000 5-min 1.31 (1.06‑1.68) 1.93 (1.55‑2.46) 2.89 (2.32‑3.72) 3.66 (2.92‑4.73) 4.67 (3.52‑6.20) 5.40 (3.97‑7.33) 6.08 (4.32‑8.54) 6.76 (4.57‑9.82) 7.57 (4.91‑11.4) 8.15 (5.16‑12.6) 10-min 0.960 (0.774‑1.22) 1.41 (1.13‑1.81) 2.12 (1.70‑2.72) 2.68 (2.13‑3.46) 3.41 (2.57‑4.55) 3.95 (2.91‑5.37) 4.46 (3.16‑6.25) 4.94 (3.34‑7.19) 5.54 (3.59‑8.36) 5.97 (3.77‑9.25) 15-min 0.780 (0.628‑0.996) 1.15 (0.920‑1.47) 1.72 (1.38‑2.21) 2.18 (1.73‑2.81) 2.78 (2.09‑3.70) 3.21 (2.37‑4.36) 3.62 (2.57‑5.08) 4.02 (2.72‑5.84) 4.51 (2.92‑6.80) 4.85 (3.07‑7.52) 30-min 0.524 (0.422‑0.670) 0.744 (0.596‑0.950) 1.08 (0.868‑1.39) 1.35 (1.07‑1.74) 1.70 (1.28‑2.26) 1.95 (1.44‑2.64) 2.18 (1.55‑3.06) 2.40 (1.62‑3.49) 2.67 (1.73‑4.02) 2.86 (1.81‑4.43) 60-min 0.346 (0.278‑0.442) 0.458 (0.368‑0.585) 0.634 (0.507‑0.812) 0.772 (0.613‑0.995) 0.952 (0.718‑1.26) 1.08 (0.798‑1.47) 1.20 (0.854‑1.69) 1.32 (0.893‑1.92) 1.46 (0.948‑2.20) 1.56 (0.988‑2.42) 2-hr 0.215 (0.174‑0.271) 0.272 (0.221‑0.344) 0.362 (0.292‑0.459) 0.434 (0.348‑0.552) 0.526 (0.402‑0.692) 0.594 (0.444‑0.796) 0.658 (0.472‑0.911) 0.720 (0.492‑1.03) 0.795 (0.520‑1.18) 0.848 (0.542‑1.30) 3-hr 0.167 (0.137‑0.210) 0.202 (0.165‑0.254) 0.258 (0.209‑0.324) 0.302 (0.244‑0.383) 0.361 (0.279‑0.472) 0.405 (0.305‑0.540) 0.447 (0.324‑0.616) 0.489 (0.337‑0.696) 0.540 (0.357‑0.799) 0.578 (0.372‑0.876) 6-hr 0.111 (0.091‑0.137) 0.125 (0.103‑0.155) 0.150 (0.123‑0.187) 0.172 (0.140‑0.214) 0.202 (0.158‑0.263) 0.225 (0.173‑0.299) 0.250 (0.184‑0.342) 0.276 (0.193‑0.390) 0.310 (0.208‑0.455) 0.337 (0.219‑0.504) 12-hr 0.069 (0.058‑0.084) 0.078 (0.065‑0.096) 0.094 (0.078‑0.115) 0.108 (0.089‑0.133) 0.127 (0.101‑0.164) 0.144 (0.111‑0.188) 0.160 (0.119‑0.217) 0.178 (0.126‑0.249) 0.202 (0.137‑0.293) 0.221 (0.145‑0.326) 24-hr 0.042 (0.036‑0.051) 0.048 (0.041‑0.058) 0.059 (0.049‑0.071) 0.068 (0.057‑0.083) 0.081 (0.065‑0.104) 0.092 (0.072‑0.119) 0.103 (0.078‑0.138) 0.115 (0.083‑0.159) 0.132 (0.090‑0.189) 0.145 (0.096‑0.211) 2-day 0.025 (0.021‑0.030) 0.029 (0.024‑0.034) 0.035 (0.030‑0.042) 0.041 (0.034‑0.049) 0.049 (0.040‑0.061) 0.055 (0.044‑0.071) 0.062 (0.047‑0.082) 0.070 (0.050‑0.095) 0.080 (0.055‑0.112) 0.088 (0.059‑0.126) 3-day 0.019 (0.016‑0.022) 0.021 (0.018‑0.025) 0.026 (0.022‑0.031) 0.030 (0.025‑0.036) 0.036 (0.029‑0.045) 0.041 (0.032‑0.052) 0.046 (0.035‑0.059) 0.051 (0.037‑0.068) 0.058 (0.040‑0.081) 0.064 (0.043‑0.090) 4-day 0.015 (0.013‑0.018) 0.017 (0.015‑0.020) 0.021 (0.018‑0.025) 0.024 (0.021‑0.029) 0.029 (0.024‑0.036) 0.032 (0.026‑0.041) 0.036 (0.028‑0.047) 0.040 (0.029‑0.054) 0.046 (0.032‑0.063) 0.050 (0.034‑0.070) 7-day 0.010 (0.009‑0.012) 0.012 (0.010‑0.014) 0.014 (0.012‑0.016) 0.016 (0.014‑0.019) 0.019 (0.015‑0.023) 0.021 (0.017‑0.026) 0.023 (0.018‑0.030) 0.025 (0.019‑0.034) 0.029 (0.020‑0.039) 0.031 (0.021‑0.043) 10-day 0.008 (0.007‑0.010) 0.009 (0.008‑0.011) 0.011 (0.010‑0.013) 0.012 (0.011‑0.015) 0.014 (0.012‑0.017) 0.016 (0.013‑0.020) 0.018 (0.014‑0.022) 0.019 (0.014‑0.025) 0.022 (0.015‑0.029) 0.023 (0.016‑0.032) 20-day 0.006 (0.005‑0.006) 0.006 (0.006‑0.007) 0.007 (0.006‑0.008) 0.008 (0.007‑0.009) 0.009 (0.008‑0.011) 0.010 (0.008‑0.012) 0.011 (0.009‑0.014) 0.012 (0.009‑0.016) 0.013 (0.010‑0.018) 0.014 (0.010‑0.020) 30-day 0.005 (0.004‑0.005) 0.005 (0.005‑0.006) 0.006 (0.005‑0.007) 0.007 (0.006‑0.008) 0.008 (0.006‑0.009) 0.008 (0.007‑0.010) 0.009 (0.007‑0.011) 0.010 (0.007‑0.012) 0.011 (0.008‑0.014) 0.011 (0.008‑0.015) 45-day 0.004 (0.003‑0.004) 0.004 (0.004‑0.005) 0.005 (0.004‑0.005) 0.005 (0.005‑0.006) 0.006 (0.005‑0.007) 0.007 (0.006‑0.008) 0.007 (0.006‑0.009) 0.008 (0.006‑0.010) 0.008 (0.006‑0.011) 0.009 (0.006‑0.012) 60-day 0.003 (0.003‑0.004) 0.004 (0.003‑0.004) 0.004 (0.004‑0.005) 0.005 (0.004‑0.005) 0.005 (0.005‑0.006) 0.006 (0.005‑0.007) 0.006 (0.005‑0.008) 0.007 (0.005‑0.008) 0.007 (0.005‑0.009) 0.008 (0.005‑0.010) 1 Precipitation frequency (PF) estimates in this table are based on frequency analysis of partial duration series (PDS). Numbers in parenthesis are PF estimates at lower and upper bounds of the 90% confidence interval. The probability that precipitation frequency estimates (for a given duration and average recurrence interval) will be greater than the upper bound (or less than the lower bound) is 5%. Estimates at upper bounds are not checked against probable maximum precipitation (PMP) estimates and may be higher than currently valid PMP values. Please refer to NOAA Atlas 14 document for more information. Back to Top PF graphical 12/7/2020 Precipitation Frequency Data Server https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=39.4133&lon=-107.1180&data=intensity&units=english&series=pds 2/3 Back to Top Maps & aerials Small scale terrain Large scale terrain + – 3km 2mi + – 100km 60mi 12/7/2020 Precipitation Frequency Data Server https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=39.4133&lon=-107.1180&data=intensity&units=english&series=pds 3/3 Large scale map Large scale aerial Back to Top US Department of Commerce National Oceanic and Atmospheric Administration National Weather Service National Water Center 1325 East West Highway Silver Spring, MD 20910 Questions?: HDSC.Questions@noaa.gov Disclaimer + – 100km 60mi + – 100km 60mi Appendix L Snow Storage EX3EAST SNOW STORAGEROARING FORK ENGINEERING 592 HIGHWAY 133 CARBONDALE COLORADO, 81623 PH: (970)340-4130 F:(866)876-5873CHECKED BY:#DESCRIPTION DATE DRAWN BYCONSTRUCTION DRAWN BY:JOB #:ASCENDIGO ADVENTURE CAMP CARBONDALE, CO 81623 2020-36NOT FORVJTAMR1 LAND USE 01.15.2021 VJT EX4WEST SNOW STORAGEROARING FORK ENGINEERING 592 HIGHWAY 133 CARBONDALE COLORADO, 81623 PH: (970)340-4130 F:(866)876-5873CHECKED BY:#DESCRIPTION DATE DRAWN BYCONSTRUCTION DRAWN BY:JOB #:ASCENDIGO ADVENTURE CAMP CARBONDALE, CO 81623 2020-36NOT FORVJTAMR1 LAND USE 01.15.2021 VJT Appendix M SGM Water Supply Adequacy Report 1 118 W. 6th St, Ste 200 Glenwood Springs, CO 81601 Phone: 970-945-1004 Fax: 970-945-5948 MEMORANDUM TO: Dan Richardson – Ascendigo Autism Services, Inc. FROM: Bailey Leppek, PE & David Schiowitz, PG – SGM, Inc. DATE: January 11, 2021 RE: Ascendigo Whitecloud Camp Water Supply Adequacy The purpose of this memorandum is to assess the physical and legal water supply adequacy for the proposed use at the Whitecloud Camp by Ascendigo Autism Services, Inc. (Ascendigo). Background The Whitecloud property has three water sources, described below. This memo focuses on the potable demand and supply from the Levitt Wells. • Levitt Wells 1-3 − Levitt Well Nos. 2 and 3 have been constructed and have pumps installed. They are currently plumbed to fill the tank on the Whitecloud property. Levitt Well No. 1 has been constructed, but no pump has been installed. The Levitt Wells are augmented by a contract with the Basalt Water Conservancy District (BWCD) under its Case No. 01CW305; BWCD Contract No. 269 covers demands up to 14.9 acre-feet per year (AF/year) and depletions up to 4.51 AF/year. This augmentation contract allows the Levitt Wells to be used year-round for indoor and limited outdoor uses. − Ascendigo plans to rely on the Levitt Wells for potable water supply for the proposed camp. This memo focuses on demand and supply from the Levitt Wells. • Antonides Well − The Antonides Well is shared multiple owners with thirteen total taps. The Levitt Family Trust obtained a contractual right to three of the thirteen taps in the Antonides Well, as documented in the May 11, 2004 well users group memo. Each well user must obtain its own contract with BWCD to cover depletions from its use. The Levitt Family Trust never obtained a BWCD contract for use from the Antonides well. − Our preliminary assessment indicated that the proposed demands can be met without relying on the Antonides well. Furthermore, the well sharing agreement and lack of an existing BWCD contract raise complications with this source. For these two reasons, the Antonides Well was not considered in this assessment of supply adequacy. • Missouri Heights Mountain Meadow Irrigation Company (MHMMIC) Shares − Ascendigo owns shares in the MHMMIC which were conveyed with the property (251 Class A shares, or 1 cfs, and 486 Class B shares, or 2.56 cfs). These water rights are Ascendigo January 2021 2 118 W. 6th St, Ste 200 Glenwood Springs, CO 81601 Phone: 970-945-1004 Fax: 970-945-5948 decreed for irrigation. Class A shares are for delivery of direct diversions from Cattle Creek and are typically delivered during spring runoff until late June or early July. Class B shares are for delivery of stored water from Spring Park Reservoir and are used to extend the irrigation season after Class A shares are no longer available. A 16-day draw of water out of the reservoir is established as an average water year (typically about 2 weeks in early July). Continued irrigation on the property will help to recharge the aquifer, benefiting the physical water supply to the Levitt Wells. − In the short term, Ascendigo plans to use this raw water supply for irrigation of hay pasture on the property while the water rights are in priority and being delivered (typically April through early July). The ditch water may be run through a pond if the pond is operated as an irrigation control structure, with storage of less than 72-hours. Ascendigo plans to irrigate at least 8.6 acres of pasture with its MHMMIC shares. Based on a typical duty of water of 1 cfs to 40 acres, Ascendigo’s shares are sufficient for the proposed irrigation during April through early July. − In the long term, Ascendigo plans to pursue a change of use of its MHMMIC shares and a new storage right, allowing it to store MHMMIC water for recreational use and/or late season irrigation of hay. Based on a preliminary review of diversion records and other MHMMIC change cases, we anticipate that a change of use case would yield enough historical consumptive use credits for filling and evaporation of a one to two acre pond, while maintaining early-season irrigation of the 8.6-acre pasture. Once full, the pond could be kept full for recreational purposes or used to provide late-season irrigation supply (from storage) for the 8.6-acre pasture. Splitting the storage into two or more ponds would allow one or more ponds to be used for operational storage while keeping one pond full for recreational purposes. For example, water stored in an upper pond could be released to the recreational pond to replace water lost to evaporation. This memo focuses only on supply adequacy for potable demands from the Levitt Wells. Demand Ascendigo proposes to use the Levitt Wells to meet the indoor demands and limited outdoor demands, as augmented by BWCD Contract 269. Indoor use demands were estimated by Roaring Fork Engineering, based on wastewater flow estimates for each facility’s respective use (from Metcalf & Eddy), assuming 15% consumptive use for indoor water use with wastewater disposed of through a septic system. The camp will operate year-round. Summer (June, July, and August) is considered peak season, with 100% occupancy of all facilities. September through May is considered off-peak season, during which 50% occupancy of campers and staff is expected. Maximum daily demand was estimated at 7,475 gallons per day (gpd) during peak season and 4,468 gpd during off-peak season. Table A attached shows indoor demand calculations and assumptions. The annual demand for indoor use based on the maximum daily demand for peak and non-peak season is 5.763 AF/year. The annual consumptive use for indoor demands is calculated to be 0.864 AF/year as documented in Table B, attached. Ascendigo January 2021 3 118 W. 6th St, Ste 200 Glenwood Springs, CO 81601 Phone: 970-945-1004 Fax: 970-945-5948 Table B attached shows additional outdoor demands and total proposed usage that could be augmented by the existing BWCD Contract 269. Within the contract limitation of 4.51 AF/year of depletions, the Levitt Wells can be used to serve all proposed indoor demands, stock watering for 12 livestock, and up to 1.84 acres of irrigation (sufficient for landscaping and irrigation of a playing field and other lawn areas). The peak demands occur in June, with demand of 1.928 AF/month or 20,940 gpd; at the 25 gallon per minute (gpm) design capacity of the pumps, this would require 14.0 hours of pumping (allowing for 10 hours of rest). If no irrigation demands were supplied from the wells (supplying indoor and stock watering demands only), the June demand would be 0.705 AF/month or 7,660 gpd; at 25 gpm this would require only 5.1 hours of pumping. During the winter when there are no irrigation demands and a reduced capacity of campers and staff, the demand is 0.428 AF/month or 4,650 gpd; at 25 gpm this would require only 3.1 hours of pumping. Legal Supply The Levitt Well Nos. 1-3 (Levitt Wells) are decreed as alternate points of diversion to the Basalt Conduit, under BWCD’s Case No. 01CW305. The Levitt Wells are augmented by BWCD Contract No. 269 (included as Attachment A) which covers demands up to 14.9 AF/year (depletions up to 4.51 AF/year, as documented in the BWCD Contract Water Requirements Table by Resource Engineering dated Oct. 8, 1996). These demands include indoor use for 26 equivalent residential units (EQRs), stock watering, and limited irrigation (the Whitecloud property was originally intended to be a subdivision of 26 units). The only revisions needed to BWCD Contract No. 269 are: 1) the contract will be reassigned to the name of the new property owners (Ascendigo) and 2) the contract will be modified slightly for the adjusted uses (adding commercial use). The Levitt Wells are contracted under Area A of BWCD. SGM has verified that Levitt Well Nos. 2 and 3 are within Area A. Levitt Well No. 1, which has no pump installed and is not currently used, is not within BWCD Area A; however, coverage of Levitt Well No. 1 within Area A is grandfathered in under the existing contract. Levitt Well No. 2 is permitted under Well Permit No. 055124-F. Levitt Well No. 3 is permitted under Well Permit No. 055125-F. Well permits are included as Attachment B. The pumping rate limit under these permits is 50 gpm from both wells. The permitted volumetric limit is 14.9 AF from both wells (consistent with BWCD Contract No. 269). Both permits are for use for 26 single family dwellings and irrigation of 1.4 acres. New well permits will need to be obtained for the Levitt Wells that encompass the new proposed uses (including commercial use and additional irrigated acreage). Ascendigo January 2021 4 118 W. 6th St, Ste 200 Glenwood Springs, CO 81601 Phone: 970-945-1004 Fax: 970-945-5948 Physical Supply Levitt Well Nos. 2 and 3 both have 25 gpm pumps installed and are both plumbed to fill the 203,000-gallon tank on the property. Levitt Well Nos. 2 and 3 are 50 feet apart and are hydraulically connected, so should be thought of as a single source with two redundant pumps. Multiple aquifer tests have been completed on Levitt Wells 2 and 3. Zancanella and Associates (Zancanella) conducted a well test in 2016, documented in a February 24, 2017 report. SGM conducted the aquifer test from September 13 through September 19, 2020. Results from both tests are summarized here. 2016 Well Test SGM reviewed the February 24, 2017 report documenting the 2016 aquifer tests on Levitt Well Nos. 2 and 3 performed by Zancanella and Associates (Zancanella). Zancanella opined that based on the 25-hours of pumping the wells, the Levitt Well Nos. 2 and 3 could sustain 30 gpm. SGM recommended that a longer pumping time period was needed to fully evaluate both wells. 2020 Well Test Design and Results The aquifer test was designed to first stress the aquifer and then to observe the changing drawdown during proposed operations. SGM pumped Levitt Well No. 2 at 25 gpm (pumping rate of the installed pump). • Phase 1: Continuous pumping – Approximately 3 days − The first phase of the well test was approximately 68 hours (2.83 days) of continuous pumping at 25 gpm. During this test approximately 102,125 gallons were discharged from the well and the water level declined a total of 4 feet. • Phase 2: Mimicking operations - 2 days − The second phase of the well test was designed to mimic two full cycles of normal peak- season operations that the well may experience at buildout: 16 hours of pumping, followed by 8 hours of recovery. • Phase 3: Recovery – 8 days − The recovery period began after two 16-hour pumping cycles when the pump was turned off. The recovery was monitored for 8 days. Results from the aquifer tests are shown in Figures 1 through 4 (attached). The static water level before testing began was measured at 255.9 feet below the top of casing. With the pump set at 310 feet there was approximately 54.2 feet of available drawdown. Water levels in the well initially declined 1.3 feet and continued to decline to a total of 4.0 feet after 68 hours of pumping. SGM estimated an apparent transmissivity in the range of 5,800 to 16,500 gallons per day per foot (gpd/ft). The rate of drawdown during the test was relatively constant at approximately 0.5 feet per 1,000 minutes of pumping (see Figure 1). The water level in the well recovered about 1.9 feet after the well was rested for 8 hours. The well was then cycled through two 16-hour pumping periods, with total drawdown of 4.0 ft after the first Ascendigo January 2021 5 118 W. 6th St, Ste 200 Glenwood Springs, CO 81601 Phone: 970-945-1004 Fax: 970-945-5948 cycle and 4.1 feet after the second cycle. Following the aquifer test, recovery of the water level was moderate with 44% of recovery after 24 hours (2.2-feet of residual drawdown), 59% of recovery after 48 hours (1.7-feet of residual drawdown), and 89% of recovery (4-inches of residual drawdown) after 8 days (see Figure 2 and 3). Within 48-hours of recovery, the water level recovered to near the initial drawdown experienced in the first minutes of pumping. Water levels in Levitt Well No. 3 were monitored during the aquifer test and showed similar results to Levitt Well No. 2 (see Figure 4). Supply Adequacy Conclusions The physical and legal supply meet the standards in the Garfield County Land Use and Development Code Article 4-M for water supply. Legal Supply Adequacy Based on review of demands and water rights documentation, SGM has the following conclusions regarding legal supply adequacy: • The Levitt Wells have sufficient legal supply through BWCD Contract No. 269 to sustain the proposed indoor demands (7,475 gpd during peak season and 4,468 gpd during off-peak season), stock watering demands (for 12 livestock), and lawn and landscaping irrigation demands for up to 1.84 acres. • Minor revisions will be made to BWCD Contract No. 269: − The contract will be reassigned to the name of the new property owners (Ascendigo). − The contract will be modified slightly for the adjusted uses (adding commercial use). • While the proposed uses fit with the permitted pumping rate and volumetric limits, new permits will be needed for the change of use. Ascendigo will obtain new permits for the Levitt Wells which encompass the new proposed uses (including commercial use and additional irrigated acreage). Physical Supply Adequacy Based on result of the aquifer test and review of previous data, SGM has the following conclusions: • After pumping Levitt Well No. 2 for approximately 68 hours, drawdown was limited to 4.0 feet with approximately 50 feet of available drawdown remaining in the well. • Water level recovery was moderate with 44% occurring after 24 hours, 59% after 48 hours and 89% after 8 days of no pumping. These results are similar to previous testing and indicate moderate recharge to aquifer; however, drawdown in the aquifer was relatively small (4.0 feet) compared to the available drawdown (54 feet). Because the drawdown is so small, this skews the perception of recovery based on percentages. Ascendigo January 2021 6 118 W. 6th St, Ste 200 Glenwood Springs, CO 81601 Phone: 970-945-1004 Fax: 970-945-5948 • Given the available 1996 and 2017 aquifer testing, the static water level appears to remain at a similar level over periods of non-pumping. This indicates that regional aquifer recharge is occurring. • Water demands for the proposed project during peak season (which range from 15,060 to 20,940 gpd) could be met by the Levitt wells. Assuming a 25 gpm pumping rate, the wells would need to be pumped for approximately 10 to 14 hours per day during the peak season. This allows for 14 to 10 hours of rest time for the pumps, allowing time for aquifer recharge. • Water demands for the proposed project are seasonal. There is an approximately 7-month period for the aquifer to recover during the off-peak season, during which the wells only need to be pumped an average of three to four hours per day to meet demands. This allows significant periods of aquifer recovery and will help preserve the long-term yield of the aquifer. • Water levels in all the Levitt Wells should be monitored weekly during the camp season and monthly during the non-camp season. Monitoring will help understand long-term aquifer trends, which may be impacted by drought, increased aquifer demand, and irrigation practices. If required to maintain aquifer levels during a drought, Ascendigo could reduce or cease irrigation from the wells. Ceasing irrigation from the wells would reduce the average daily pumping time required from 14 hours to 5.1 hours. Attachments Table A: Indoor Demands for Ascendigo Whitecloud Camp Table B: Annual Demands for Ascendigo Whitecloud Camp Proposed from Levitt Wells under Existing BWCD Contract No. 269 Figures 1 – 4: Results from SGM’s September 2020 Aquifer Tests Attachment A: BWCD Contract No. 269 Attachment B: Well Permits for Levitt Wells Ascendigo Autism Services, Inc. Whitecloud Camp Demand and Supply Assessment Basecamp - Dining Hall & Admin Bldg 2,120 100%2,120 0.195 50%1,060 0.098 1,060 Camper Lodging 1,160 100%1,160 0.107 50%580 0.053 580 Staff Lodging 2,190 100%2,190 0.202 50%1,095 0.101 1,095 Activity Barn 545 100%545 0.050 50%273 0.025 273 Guest Cabin 530 100%530 0.049 100%530 0.049 530 Equestrian Center 35 100%35 0.003 100%35 0.003 35 Maintenance Barn 15 100%15 0.001 100%15 0.001 15 Caretaker Houses 880 100%880 0.081 100%880 0.081 880 Total Demand 7,475 7,475 0.688 4,468 0.411 4,468 Notes: gpd = gallons per day, AF = acre-feet Demands from Roaring Fork Engineering, based on wastewater flow estimates from Metcalf & Eddy, assuming 15% consumptive use for indoor water use with wastewater disposed of through a septic system. Daily Demand (gpd) % Occupancy Monthly Demand (AF) Maximum Daily Water Demand (gpd)% Occupancy Daily Demand (gpd) Monthly Demand (AF) Indoor Use Description The camp will operate year-round. Summer (June, July, and August) is considered peak season, with 100% occupancy of all facilities. September through May is considered off-peak season. During off-peak season, 50% occupancy of campers and staff is expected. Maximum daily demand was estimated at 7,475 gallons per day (gpd) during peak season and 4,468 gpd during off-peak season. Off-Peak Season (Sept - May) Table A: Daily Indoor Demands for Ascendigo Whitecloud Camp Peak Season (Jun-Aug) \\192.168.80.21\projects\2020\2020-328-AscendigoWaterRights\001\E-Reports\SGM\Whitecloud\CountyLandUse\Demands_Whitecloud_Revised.xlsx SGM Inc. January 9, 2021 Ascendigo Autism Services, Inc. Whitecloud Camp Demand and Supply Assessment Lawn Irrigation Stock Watering 1.84 acres 12 stock AF AF AF AF gpm AF AF/acre AF AF AF %AF AF 1 2 3 4 5 6 7 8 9 10 11 12 13 30 Nov 0.411 - 0.017 0.428 3.1 0.062 - - 0.017 0.0780 8.2%0.369 0.370 31 Dec 0.411 - 0.017 0.428 3.0 0.062 - - 0.017 0.0790 8.3%0.373 0.374 31 Jan 0.411 - 0.017 0.428 3.0 0.062 - - 0.017 0.0790 8.3%0.373 0.374 28 Feb 0.411 - 0.016 0.427 3.3 0.062 - - 0.016 0.0780 8.4%0.378 0.379 31 Mar 0.411 - 0.017 0.428 3.0 0.062 - - 0.017 0.0790 8.4%0.378 0.379 30 Apr 0.411 0.088 0.017 0.515 3.7 0.062 0.033 0.062 0.017 0.1400 8.4%0.378 0.379 31 May 0.411 0.938 0.017 1.366 9.6 0.062 0.357 0.656 0.017 0.7350 8.4%0.378 0.379 30 Jun 0.688 1.224 0.017 1.928 14.0 0.103 0.466 0.857 0.017 0.9770 8.4%0.378 0.379 31 Jul 0.688 1.146 0.017 1.851 13.0 0.103 0.436 0.802 0.017 0.9230 8.3%0.373 0.374 31 Aug 0.688 0.727 0.017 1.433 10.0 0.103 0.277 0.509 0.017 0.6300 8.3%0.373 0.374 30 Sep 0.411 0.623 0.017 1.051 7.6 0.062 0.237 0.436 0.017 0.5140 8.3%0.373 0.374 31 Oct 0.411 0.155 0.017 0.583 4.1 0.062 0.059 0.109 0.017 0.1870 8.3%0.373 0.374 Annual 5.763 4.902 0.202 10.867 0.864 1.865 3.431 0.202 4.499 100%4.499 4.510 Notes: 1 Total indoor use in AF/month, from Table A. Indoor demand estimates differ for camp season and off-season. 2 =(8B) / 70% irrigation efficiency, as identified in the BWCD Contract 269 Table of Depletions (Resource Engineering, Oct. 8 1996). 3 =(9). Stock watering is assumed to be 100% consumptive. 4 =(1) + (2) + (3). BWCD Contract No. 269 covers demands up to 14.9 AF/year. 5 =(4) / [days per month] * [325,851 gal/AF] / [25 gpm] / [60 min / hour]. Pumps are rated for 25 gpm. 6 = (1) * 15%consumptive use. 15% consumptive is a typical estimate of CU of indoor water use treated by septic, assumption used in BWCD Contract 269. 7 8 Unit CU from Column (7) applied to irrigated acreage. Maximum # acres for which irrigation demand can be supported by Contract No. 269. 9 =[15 gallons per day per head of livestock] x [# stock] * [days per month], converted to acre-feet. Typical unit demand assumption used by Division 5 Water Resources. 10 = (6) + (8) + (9) 11 12 13 Monthly depletion factors for Type E Wells, decreed in 87CW155. The Levitt Wells are Type E Wells per Case No. 01CW305. = Annual total from Column (10) distributed monthly using factors in Column (11). Unit CU Lawn Monthly Depletion Factors Table B: Annual Demands for Ascendigo Whitecloud Camp Proposed from Levitt Wells under Existing BWCD Contract No. 269 Stock Watering Month Hours Pumped per Day at 25 gpm Indoor Use Lawn Irrigation Total Demand (Diversions)Depletions Covered by BWCD Contract 269 Depletions (Consumptive Use, CU) Indoor Total Total Delayed Depletions Annual total of 4.510 AF of consumptive use covered by BWCD Contract No. 269, per Table of Demands and Depletions (Resource Engineering, Oct. 8 1996). Distributed monthly using factors in Column (11). Cell highlights red if contract amount is exceeded. Unit consumptive use (CU) of lawn irrigation and/or crop irrigation of 1.865 AF/acre, from BWCD Contract No. 269 Table of Demands and Depletions (Resource Engineering, Oct. 8 1996). Distributed monthly with same pattern as table from Contract. \\192.168.80.21\projects\2020\2020-328-AscendigoWaterRights\001\E-Reports\SGM\Whitecloud\CountyLandUse\Demands_Whitecloud_Revised.xlsx SGM Inc. January 9, 2021 SGM 9/30/2020 \\192.168.80.21\projects\2020\2020-328-AscendigoWaterRights\001\B-Calcs\WellTest\ LevittWellAquiferTest_20200929Figure 1 - Drawdown & Reco 0 10 20 30 40 50 60 70 255.9 265.9 275.9 285.9 295.9 305.9 315.9 325.9 1 10 100 1000 10000 100000 Drawdown (feet)Pumping Water Level (feet below top of casing)Time since pump started (minutes) Figure 1. Levitt Well No. 2 (Permit No. 55124-F) -Constant Discharge Test Constant Discharge and Recovery Ascendigo Autism Services, LLC September 14 -25, 2020 Levitt Well No. 2 Water Level Pump Depth (310 FT) Bottom of Well (320 FT) SWL = 255.9 ft Pump Intake = 310 ft DTD = 320 ft P Pump Depth Pump off (8 hours) Pump on (16 hours) Q = 25 gpm T ≈ 9,000 gpd/ft Pump off Pump off (8 hours) Pump on (16 hours) SGM 9/30/2020 \\192.168.80.21\projects\2020\2020-328-AscendigoWaterRights\001\B-Calcs\WellTest\ LevittWellAquiferTest_20200929Figure 2 - Drawdown & Reco zoo 0 2 4 6 8 10 255.9 257.9 259.9 261.9 263.9 265.9 1 10 100 1000 10000 100000 Drawdown (feet)Pumping Water Level (feet below top of casing)Time since pump started (minutes) Figure 2. Levitt Well No. 2 (Permit No. 55124-F) -Constant Discharge Test Constant Discharge and Recovery Ascendigo Autism Services, LLC September 14 -25, 2020 Levitt Well No. 2 Water Level Bottom of Well (320 FT) SWL = 255.9 ft Pump Intake = 310 ft DTD = 320 ft P Pump off (8 hours) Pump on (16 hours) Q = 25 gpm T ≈ 9,000 gpd/ft Pump off Pump off (8 hours) Pump on (16 hours) SGM 9/30/2020 \\192.168.80.21\projects\2020\2020-328-AscendigoWaterRights\001\B-Calcs\WellTest\ LevittWellAquiferTest_20200929Figure 3 - Recovery 0 25 50 255.9 280.9 305.9 1 10 100 1000 10000 Resideual Drawdown (feet)Water Level (feet)Time since pump started/Time since pumping stopped (t/t') Figure 3. Levitt Well No. 2 (Permit No. 55124-F) -Constant Discharge Test Recovery Ascendigo Autism Services, LLC September 17 -25, 2020 Levitt Well No. 2 Water Level Pump Depth (310 FT) Bottom of Well (320 FT) SWL = 255.9 ft Pump Intake = 310 ft DTD = 320 ft P Pump Depth T ≈ -16,500 gpd/ft SGM 9/30/2020 \\192.168.80.21\projects\2020\2020-328-AscendigoWaterRights\001\B-Calcs\WellTest\ LevittWellAquiferTest_20200929Figure 4 - Drawdown & Reco 0 2 4 6 8 10 255.9 257.9 259.9 261.9 263.9 265.9 1 10 100 1000 10000 100000 Drawdown (feet)Pumping Water Level (feet below top of casing)Time since pump started (minutes) Figure 4. Levitt Well No. 3 (Permit No. 55125-F) -Constant Discharge Test Constant Discharge and Recovery Ascendigo Autism Services, LLC September 14 -25, 2020 Levitt Well No. 3 Water Level Bottom of Well (360 FT) SWL = 255.9 ft Pump Intake = N/A DTD = 360 ft P Pump off (8 hours) Pump on (16 hours) Q = 25 gpm T ≈ 5,800 gpd/ft Pump off Pump off (8 hours) Pump on (16 hours) Attachment A Attachment B Form No. OFFICE OF THE STATE ENGINEER GWS -25 COLORADO DIVISION OF WATER RESOURCES 818 Centennial Bldg., 1313 Sherman St.., Denver, Colorado 60203 303) 866 -3581 APPLICANT THOMAS LEVITT BOX 414740 KANSAS CITY, MO 64141- 816) 474 -2244 WELL PERMIT NUMBER 055:123 DIV. 5 WD 38 DES. BASIN F _ MD APPROVED WELL LOCATION GARFIELD COUNTY SW 1/4 SW 1/4 Section 28 Township 7 S Range 87 W Sixth P.M. DISTANCES FROM SECTION LINES 1352 Ft. from South Section Line 1081 Ft. from West Section Line UTM COORDINATES SAMI lllk1 ISSUANCE OF THIS PERMIT DOES NOT CONFER A WATER RIGHT CONDITIONS OF APPROVAL 1) This well shall be used in such a way as to cause no material injury to existing water rights. The issuance of this permit does not assure the applicant that no injury will occur to another vested water right or preclude another owner of a vested water right from seeking relief in a civil court action. 2) The construction of this well shall be in compliance with the Water Well Construction Rules 2 CCR 402 -2, unless approval of a variance has been granted by the State Board of Examiners of Water Well Construction and Pump Installation Contractors in accordance with Rule 18. 3) Approved pursuant to CRS 37- 90- 137(2) for the construction of the Levitt Well #1 (a reapplication for expired permit 51073 -F), appropriating ground water tributary to the Roaring Fork River, as an alternate point of diversion to the Basalt Conduit, on the condition that the well shall be operated only when the Basalt Water Conservancy District's substitute water supply plan, approved by the State Engineer, is in effect and when a water allotment contract between the well owner and the Basalt Water Conservancy District for the release of replacement water from Ruedi Reservoir is in effect, or under an approved plan for augmentation. BWCD contract #3.3.5.269. 4) The combined use of ground water from this well and the Levitt Wells 2 and 3 is limited to a water supply for 26 single family dwellings, the irrigation of not more than 1.4 acres of lawns, gardens and open space, and the watering of domestic animals. All use of this well will be curtailed unless the water allotment contract or a plan for augmentation is in effect. 5) The simultaneous maximum pumping rate of this well and Levitt Wells #2 and #3 shall not exceed 50 GPM. 6) The combined average annual amount of ground water to be appropriated by this well and the Levitt Wells #2 and #3 shall not exceed 14.9 acre -feet. 7) The owner shall mark the well in a conspicuous place with well permit number(s), name of the aquifer, and court case number(s) as appropriate. The owner shall take necessary means and precautions to preserve these markings. 8) This well shall be constructed not more than 200 feet from the location specified on this permit and not less than 600 feet from any existing well not owned by the applicant. 9) A totalizing flow meter must be installed on this well and maintained in good working order. Permanent records of all diversions must be maintained by the well owner (recorded at least annually) and submitted to the Division Engineer upon request. 4 w (a /mow APPROVED KJ W Permit Expiration Date Extended to December 22, 2002 AOT 12 -24 -01 State Engineer el o iI Form No. OFFICE OF THE STATE ENGINEER GWS -25 COLORADO DIVISION OF WATER RESOURCES 818 Centennial Bldg., 1313 Sherman St., Denver, Colorado 80203 303) 866 -3581 APPLICANT THOMAS LEVITT BOX 414740 KANSAS CITY, MO 64141- 104aX n7n _oOnn 1095 WELL PERMIT NUMBER 'i Jc F DIV. 5 WD 38 DES. BASIN MD APPROVED WELL LOCATION GARFIELD COUNTY NE 1/4 SW 1/4 Section 28 Township 7 S Range 87 W Sixth P.M. DISTANCES FROM SECTION LINES 1470 Ft. from South Section Line 2001 Ft. from West Section Line UTM COORDINATES OERMIT TO CONSTRUCT A WELL Norining: Doom 1a• ISSUANCE OF THIS PERMIT DOES NOT CONFER A WATER RIGHT CONDITIONS OF APPROVAL 1) This well shall be used in such a way as to cause no material injury to existing water rights. The issuance of this permit does not assure the applicant that no injury will occur to another vested water right or preclude another owner of a vested water right from seeking relief in a civil court action. 2) The construction of this well shall be in compliance with the Water Well Construction Rules 2 CCR 402 -2, unless approval . of a variance has been granted by the State Board of Examiners of Water Well Construction and Pump Installation Contractors in accordance with Rule 18. 3) Approved pursuant to CRS 37 -90- 137(2) for the construction of the Levitt Well #2 (a reapplication for expired permit 51071 -F), appropriating ground water tributary to the Roaring Fork River, as an alternate point of diversion to the Basalt Conduit, on the condition that the well shall be operated only when the Basalt Water Conservancy District's substitute water supply plan, approved by the State Engineer, is in effect and when a water allotment contract between the well owner and the Basalt Water Conservancy District for the release of replacement water from Ruedi Reservoir is in effect, or under an approved plan for augmentation. BWCD contract #3.3.5.269. 4) The combined use of ground water from this well and the Levitt Wells 1 and 3 is limited to a water supply for 26 single family dwellings, the irrigation of not more than 1.4 acres of lawns, gardens and open space, and the watering of domestic animals. All use of this well will be curtailed unless the water allotment contract or a plan for augmentation is in effect. 5) The simultaneous maximum pumping rate of this well and Levitt Wells #1 and #3 shall not exceed 50 GPM. 6) The combined average annual amount of ground water to be appropriated by this well and the Levitt Wells #1 and #3 shall not exceed 14.9 acre -feet. 7) The owner shall mark the well in a conspicuous place with well permit number(s), name of the aquifer, and court case number(s) as appropriate. The owner shall take necessary means and precautions to preserve these markings. 8) This well shall be constructed not more than 200 feet from the location specified on this permit and not less than 600 feet from any existing well not owned by the applicant. 9) A totalizing flow meter must be installed on this well and maintained in good working order. Permanent records of all diversions must be maintained by the well owner (recorded at least annually) and submitted to the Division Engineer upon request. IdW 121W16V Permit Expiration Date Extended to December 22, 2002 AOT 12 -24 -01 APPROVED KJW State Engineer BEE 2 2 2 By 1!' CC ' :.••.. 1 nnT ieci ion EXPRATIO ATEILU IC:, Fora No. OFFICE OF THE STATE ENGINEER GWS -25 COLORADO DIVISION OF WATER RESOURCES 818 Centennial Bldg., 1313 Sherman St., Denver, Colorado 80203 303) 866 -3581 APPLICANT THOMAS LEVITT BOX 414740 KANSAS CITY. MO 64141- 816) 474 -2244 1095 WELL PERMIT NUMBER 05SIZZ F DIV. 5 WD 38 DES. BASIN MD APPROVED WELL LOCATION GARFIELD COUNTY NE 1/4 SW 1/4 Section 28 Township 7 S Range 87 W Sixth P.M. DISTANCES FROM SECTION LINES 1470 Ft. from South Section Line 1900 Ft. from West Section Line UTM COORDINATES r. JhHMI I I U USt AN tAlb I INU W ILL "" " " "'U' — '" ° " "1' ISSUANCE OF THIS PERMIT DOES NOT CONFER A WATER RIGHT CONDITIONS OF APPROVAL 1) This well shall be used in such a way as to cause no material injury to existing water rights. The issuance of this permit does not assure the applicant that no injury will occur to another vested water right or preclude another owner of a vested water right from seeking relief in a civil court action. 2) The construction of this well shall be in compliance with the Water Well Construction Rules 2 CCR 402 -2, unless approval of a variance has been granted by the State Board of Examiners of Water Well Construction and Pump Installation Contractors in accordance with Rule 18. 3) Approved pursuant to CRS 37 -90- 137(2) for the use of an existing well, the Levitt Well #3, constructed under monitoring hole notice MH- 29255, as a reapplication for expired permit 51072 -F, appropriating ground water tributary to the Roaring Fork River, as an alternate point of diversion to the Basalt Conduit, on the condition that the well shall be operated only when the Basalt Water Conservancy District's substitute water supply plan, approved by the State Engineer, is in effect and when a water allotment contract between the well owner and the Basalt Water Conservancy District for the release of replacement water from Ruedi Reservoir is in effect, or under an approved plan for augmentation. BWCD contract 3.3.5.269. 4) The combined use of ground water from this well and the Levitt Wells #1 and #2 is limited to a water supply for 26 single family dwellings, the irrigation of not more than 1.4 acres of lawns, gardens and open space, and the watering of domestic animals. All use of this well will be curtailed unless the water allotment contract or a plan for augmentation is in effect. 5) The simultaneous maximum pumping rate of this well and Levitt Wells #1 and #2 shall not exceed 50 GPM. 6) The combined average annual amount of ground water to be appropriated by this well and the Levitt Wells #1 and #2 shall not exceed 14.9 acre -feet. 7) The owner shall mark the well in a conspicuous place with well permit number(s), name of the aquifer, and court case number(s) as appropriate. The owner shall take necessary means and precautions to preserve these markings. 8) This well shall be located not more than 200 feet from the location specified on this permit and not less than 600 feet from any existing well not owned by the applicant. 9) A totalizing flow meter must be installed on this well and maintained in good working order. Permanent records of all diversions must be maintained by the well owner (recorded at least annually) and submitted to the Division Engineer upon request. 1 •AA914 APPROVED KJW Permit Expiration Date Extended to December 22, 2002 AOT 12 -24 -01 State Appendix N Levitt Wells Water Quality Results 75 Suttle Street Durango, CO 81303 970.247.4220 Phone 970.247.4227 Fax www.greenanalytical.com SGM RE: Public DW Full Suite Durango, CO 81301 555 Rivergate Lane, SuiteB4-82 Bailey Leppek Debbie Zufelt Reports Manager Enclosed are the results of analyses for samples received by the laboratory on 09/16/20 12:15. The data to follow was performed, in whole or in part, by a subcontract laboratory with an additional report attached. If you need any further assistance, please feel free to contact me. Sincerely, 14 October 2020 All accredited analytes contained in this report are denoted by an asterisk (*). For a complete list of accredited analytes please do not hesitate to contact us via any of the contact information contained in this report. All of our certifications can be viewed at http://greenanalytical.com/certifications/ Green Analytical Laboratories is NELAP accredited through the Texas Commission on Environmental Quality. Accreditation applies to drinking water and non-potable water matrices for trace metals and a variety of inorganic parameters. Green Analytical Laboratories is also accredited through the Colorado Department of Public Health and Environment and EPA region 8 for trace metals, Cyanide, Fluoride, Nitrate, and Nitrite in drinking water. Our affiliate laboratory, Cardinal Laboratories, is also NELAP accredited through the Texas Commission on Environmental Quality for a variety of organic constituents in drinking water, non-potable water and solid matrices. Cardinal is also accredited for regulated VOCs, TTHM, and HAA-5 in drinking water through the Colorado Department of Public Health and Environment and EPA region 8. Page 1 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Project: Project Name / Number: Project Manager: Reported: SGM 555 Rivergate Lane, SuiteB4-82 Ascendigo Levitt Wells Bailey Leppek Public DW Full Suite 10/14/20 15:29Durango CO, 81301 dzufelt@greenanalytical.com p: 970.247.4220 f: 970.247.4227 75 Suttle Street Durango, CO 81303 www.GreenAnalytical.com Sample ID Laboratory ID Date Sampled ANALYTICAL REPORT FOR SAMPLES Date ReceivedMatrix Notes Levitt Wells 2009173-01 Water 09/15/20 13:34 09/16/20 12:15 Debbie Zufelt, Reports Manager Green Analytical Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. In no event shall Green Analytical Laboratories be liable for incidental or consequential damages . GALs liability, and clients exclusive remedy for any claim arising, shall be limited to the amount paid by client for analyses. All claims, including those for negligence and any other cause whatsoever, shall be deemed waived unless made in writing and received within thirty days after completion of the applicable service. Page 2 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Project: Project Name / Number: Project Manager: Reported: SGM 555 Rivergate Lane, SuiteB4-82 Ascendigo Levitt Wells Bailey Leppek Public DW Full Suite 10/14/20 15:29Durango CO, 81301 dzufelt@greenanalytical.com p: 970.247.4220 f: 970.247.4227 75 Suttle Street Durango, CO 81303 www.GreenAnalytical.com Except for Methods 525.2 and 547, the SOC analytes are not reported due to a shipment failure by overnight carrier. Debbie Zufelt, Reports Manager Green Analytical Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. In no event shall Green Analytical Laboratories be liable for incidental or consequential damages . GALs liability, and clients exclusive remedy for any claim arising, shall be limited to the amount paid by client for analyses. All claims, including those for negligence and any other cause whatsoever, shall be deemed waived unless made in writing and received within thirty days after completion of the applicable service. Page 3 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Project: Project Name / Number: Project Manager: Reported: SGM 555 Rivergate Lane, SuiteB4-82 Ascendigo Levitt Wells Bailey Leppek Public DW Full Suite 10/14/20 15:29Durango CO, 81301 dzufelt@greenanalytical.com p: 970.247.4220 f: 970.247.4227 75 Suttle Street Durango, CO 81303 www.GreenAnalytical.com ResultAnalyte RL Analyzed Method Notes DilutionUnits Levitt Wells 2009173-01 (Water) AnalystMDL Microbiology 09/16/20 14:45No Unit 1 SM9223B Colilert CABAbsentTotal Coliform 09/16/20 14:45No Unit 1 SM9223B Colilert CABAbsentE. Coli General Chemistry 09/18/20 10:1510.0 mg/L 1 2320 B VJW2297.16Alkalinity, Total as CaCO3* 09/23/20 12:200.100 mg NH3-N/L 1 EPA350.1 LLG<0.100 0.0251Ammonia as N 09/24/20 05:070.100 mg/L 1 EPA300.0 AES<0.100 0.0309Bromide 09/24/20 05:071.00 mg/L 1 EPA300.0 AES8.32 0.0886Chloride* 09/21/20 17:350.0100 mg/L 1 EPA335.4 LLG<0.0100 0.00122Cyanide, Total* 09/24/20 05:070.100 mg/L 1 EPA300.0 AES0.781 0.00971Fluoride* 09/29/20 17:16[blank]1 Calculation DJZ-0.0500Langelier Index 09/17/20 09:530.100 mg/L 5 EPA300.0 JDA2.10 0.051Nitrate as N* 09/17/20 09:530.120 mg/L 5 EPA300.0 JDA2.10 0.0560Nitrate+Nitrite as N by IC 09/16/20 22:280.020 mg/L 1 EPA300.0 JDA<0.020 0.005Nitrite as N* 09/16/20 13:35pH Units 1 EPA150.1 VJW7.34pH* 09/18/20 10:260.0500 mg P/L 1 EPA365.1 LLG<0.0500 0.00904Phosphorus, Total 09/18/20 16:4710.0 mg/L 1 EPA160.1 VJW345Total Dissolved Solids* 09/24/20 05:071.00 mg/L 1 EPA300.0 AES47.8 0.152Sulfate* 09/22/20 10:000.0500 mg/L 1 4500S2-D VJW<0.0500 0.0258Sulfide 09/16/20 13:15C1 Calculation VJW18.1Temperature, Lab Ambient Total Recoverable Metals by ICP (E200.7) 09/25/20 16:230.050 mg/L 1 EPA200.7 AES<0.050 0.022Aluminum* 09/25/20 16:230.100 mg/L 1 EPA200.7 AES51.4 0.027Calcium* 09/25/20 16:230.662 mg/L 1 2340 B AES2590.286Hardness as CaCO3 09/25/20 16:230.050 mg/L 1 EPA200.7 AES<0.050 0.016Iron* 09/25/20 16:230.100 mg/L 1 EPA200.7 AES31.8 0.053Magnesium* 09/25/20 16:231.00 mg/L 1 EPA200.7 AES2.75 0.152Potassium* 09/25/20 16:231.00 mg/L 1 EPA200.7 AES21.5 0.174Sodium* Debbie Zufelt, Reports Manager Green Analytical Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. In no event shall Green Analytical Laboratories be liable for incidental or consequential damages . GALs liability, and clients exclusive remedy for any claim arising, shall be limited to the amount paid by client for analyses. All claims, including those for negligence and any other cause whatsoever, shall be deemed waived unless made in writing and received within thirty days after completion of the applicable service. Page 4 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Project: Project Name / Number: Project Manager: Reported: SGM 555 Rivergate Lane, SuiteB4-82 Ascendigo Levitt Wells Bailey Leppek Public DW Full Suite 10/14/20 15:29Durango CO, 81301 dzufelt@greenanalytical.com p: 970.247.4220 f: 970.247.4227 75 Suttle Street Durango, CO 81303 www.GreenAnalytical.com ResultAnalyte RL Analyzed Method Notes DilutionUnits Levitt Wells 2009173-01 (Water) AnalystMDL Total Recoverable Metals by ICPMS (E200.8) 09/29/20 13:280.0020 mg/L 1 EPA200.8 JDA<0.0020 0.0007Antimony* 09/29/20 13:280.0010 mg/L 1 EPA200.8 JDA0.0014 0.0002Arsenic* 09/29/20 13:280.0005 mg/L 1 EPA200.8 JDA0.0672 0.00009Barium* 09/30/20 13:020.0005 mg/L 1 EPA200.8 JDA<0.0005 0.0002Beryllium* 09/29/20 13:280.0005 mg/L 1 EPA200.8 JDA<0.0005 0.0001Cadmium* 09/30/20 13:020.0020 mg/L 1 EPA200.8 JDA<0.0020 0.0007Chromium* 09/30/20 13:020.0100 mg/L 1 EPA200.8 JDA<0.0100 0.0002Copper* 09/29/20 13:280.0005 mg/L 1 EPA200.8 JDA<0.0005 0.0001Lead* 09/30/20 13:020.0020 mg/L 1 EPA200.8 JDA<0.0020 0.0007Manganese* 09/30/20 13:020.0005 mg/L 1 EPA200.8 JDA<0.0005 0.0004Nickel* 09/29/20 13:280.0010 mg/L 1 EPA200.8 JDA<0.0010 0.0006Selenium* 09/29/20 13:280.0005 mg/L 1 EPA200.8 JDA<0.0005 0.0002Thallium* 09/30/20 13:020.0100 mg/L 1 EPA200.8 JDA<0.0100 0.0016Zinc* Total Mercury by CVAA 09/22/20 13:030.0002 mg/L 1 EPA245.1 LLG<0.0002 0.00001Mercury* Subcontracted -- Cardinal Laboratories Organic Compounds 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.121Dichlorodifluoromethane 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.0720Chloromethane 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.148Vinyl chloride* 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.0950Bromomethane 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.182Chloroethane 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.277Trichlorofluoromethane 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.3961,1-Dichloroethene* 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.455Methylene chloride* 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.152trans-1,2-Dichloroethene* 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.1191,1-Dichloroethane 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.0850cis-1,2-Dichloroethene* 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.2192,2-Dichloropropane 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.117Bromochloromethane 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.0570Chloroform* 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.115Carbon tetrachloride* Debbie Zufelt, Reports Manager Green Analytical Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. In no event shall Green Analytical Laboratories be liable for incidental or consequential damages . GALs liability, and clients exclusive remedy for any claim arising, shall be limited to the amount paid by client for analyses. All claims, including those for negligence and any other cause whatsoever, shall be deemed waived unless made in writing and received within thirty days after completion of the applicable service. Page 5 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Project: Project Name / Number: Project Manager: Reported: SGM 555 Rivergate Lane, SuiteB4-82 Ascendigo Levitt Wells Bailey Leppek Public DW Full Suite 10/14/20 15:29Durango CO, 81301 dzufelt@greenanalytical.com p: 970.247.4220 f: 970.247.4227 75 Suttle Street Durango, CO 81303 www.GreenAnalytical.com ResultAnalyte RL Analyzed Method Notes DilutionUnits Levitt Wells 2009173-01 (Water) AnalystMDL Subcontracted -- Cardinal Laboratories Organic Compounds 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.1041,1,1-Trichloroethane* 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.1271,1-Dichloropropene 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.0900Benzene* 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.07301,2-Dichloroethane* 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.105Trichloroethene* 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.0680Dibromomethane 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.05001,2-Dichloropropane* 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.0980Bromodichloromethane* 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.0470cis-1,3-Dichloropropene 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.147Toluene* 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.111Tetrachloroethene* 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.119trans-1,3-Dichloropropene 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.1091,1,2-Trichloroethane* 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.0840Dibromochloromethane* 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.06701,3-Dichloropropane 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.0880Chlorobenzene* 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.0700Ethylbenzene* 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.08101,1,1,2-Tetrachloroethane 09/23/20 12:071.00 ug/L 1 524.2 MS<1.00 0.367m+p - Xylene 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.0790o-Xylene* 09/23/20 12:071.50 ug/L 1 524.2 MS<1.50 0.446Total Xylenes* 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.150Bromoform* 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.0650Styrene* 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.0600Isopropylbenzene 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.0640Bromobenzene 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.0610n-Propylbenzene 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.1681,1,2,2-Tetrachloroethane 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.08402-Chlorotoluene 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.1001,2,3-Trichloropropane 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.2231,3,5-Trimethylbenzene 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.06404-Chlorotoluene 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.0810tert-Butylbenzene Debbie Zufelt, Reports Manager Green Analytical Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. In no event shall Green Analytical Laboratories be liable for incidental or consequential damages . GALs liability, and clients exclusive remedy for any claim arising, shall be limited to the amount paid by client for analyses. All claims, including those for negligence and any other cause whatsoever, shall be deemed waived unless made in writing and received within thirty days after completion of the applicable service. Page 6 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Project: Project Name / Number: Project Manager: Reported: SGM 555 Rivergate Lane, SuiteB4-82 Ascendigo Levitt Wells Bailey Leppek Public DW Full Suite 10/14/20 15:29Durango CO, 81301 dzufelt@greenanalytical.com p: 970.247.4220 f: 970.247.4227 75 Suttle Street Durango, CO 81303 www.GreenAnalytical.com ResultAnalyte RL Analyzed Method Notes DilutionUnits Levitt Wells 2009173-01 (Water) AnalystMDL Subcontracted -- Cardinal Laboratories Organic Compounds 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.2541,2,4-Trimethylbenzene 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.0780sec-Butylbenzene 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.0940p-Isopropyltoluene 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.05101,3-Dichlorobenzene 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.1181,4 Dichlorobenzene* 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.0560n-Butylbenzene 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.07101,2-Dichlorobenzene* 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.177Hexachlorobutadiene 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.1161,2,4-Trichlorobenzene* 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.140Naphthalene 09/23/20 12:070.500 ug/L 1 524.2 MS<0.500 0.1091,2,3-Trichlorobenzene 09/23/20 12:07 82.4-141118 %Surrogate: Dibromofluoromethane 524.2 MS 09/23/20 12:07 87.1-11098.9 %Surrogate: Toluene-d8 524.2 MS 09/23/20 12:07 76.4-11499.4 %Surrogate: 4-Bromofluorobenzene 524.2 MS Debbie Zufelt, Reports Manager Green Analytical Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. In no event shall Green Analytical Laboratories be liable for incidental or consequential damages . GALs liability, and clients exclusive remedy for any claim arising, shall be limited to the amount paid by client for analyses. All claims, including those for negligence and any other cause whatsoever, shall be deemed waived unless made in writing and received within thirty days after completion of the applicable service. Page 7 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Project: Project Name / Number: Project Manager: Reported: SGM 555 Rivergate Lane, SuiteB4-82 Ascendigo Levitt Wells Bailey Leppek Public DW Full Suite 10/14/20 15:29Durango CO, 81301 dzufelt@greenanalytical.com p: 970.247.4220 f: 970.247.4227 75 Suttle Street Durango, CO 81303 www.GreenAnalytical.com Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte General Chemistry - Quality Control Batch B201887 - General Prep - Wet Chem Prepared: 09/18/20 Analyzed: 09/21/20 Blank (B201887-BLK1) Cyanide, Total ND 0.0100 mg/L Prepared: 09/18/20 Analyzed: 09/21/20 LCS (B201887-BS1) Cyanide, Total 0.100 0.0100 0.100 90-110100mg/L Prepared: 09/18/20 Analyzed: 09/21/20 LCS Dup (B201887-BSD1) Cyanide, Total 0.0995 0.0100 0.100 2090-11099.5 0.501mg/L Batch B201895 - General Prep - Wet Chem Prepared & Analyzed: 09/16/20 Blank (B201895-BLK1) Nitrate as N ND 0.020 mg/L Nitrite as N ND 0.020 mg/L Prepared & Analyzed: 09/16/20 LCS (B201895-BS1) Nitrate as N 0.933 0.020 1.00 90-11093.3mg/L Nitrite as N 1.01 0.020 1.00 90-110101mg/L Prepared & Analyzed: 09/16/20 LCS Dup (B201895-BSD1) Nitrate as N 0.931 0.020 1.00 2090-11093.1 0.182mg/L Nitrite as N 1.02 0.020 1.00 2090-110102 0.531mg/L Batch B201900 - General Prep - Wet Chem Prepared: 09/16/20 Analyzed: 09/18/20 Blank (B201900-BLK1) Phosphorus, Total ND 0.0500 mg P/L Prepared: 09/16/20 Analyzed: 09/18/20 LCS (B201900-BS1) Phosphorus, Total 2.72 0.0500 25.0 90-11010.9mg P/L Prepared: 09/16/20 Analyzed: 09/18/20 LCS Dup (B201900-BSD1) Phosphorus, Total 2.64 0.0500 25.0 2090-11010.6 2.76mg P/L Batch B201903 - General Prep - Wet Chem Prepared & Analyzed: 09/16/20 Source: 2009168-01Duplicate (B201903-DUP1) pH 7.09 7.04 200.708pH Units Prepared & Analyzed: 09/16/20 Reference (B201903-SRM1) pH 7.01 7.00 98.5-101.4100pH Units Debbie Zufelt, Reports Manager Green Analytical Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. In no event shall Green Analytical Laboratories be liable for incidental or consequential damages . GALs liability, and clients exclusive remedy for any claim arising, shall be limited to the amount paid by client for analyses. All claims, including those for negligence and any other cause whatsoever, shall be deemed waived unless made in writing and received within thirty days after completion of the applicable service. Page 8 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Project: Project Name / Number: Project Manager: Reported: SGM 555 Rivergate Lane, SuiteB4-82 Ascendigo Levitt Wells Bailey Leppek Public DW Full Suite 10/14/20 15:29Durango CO, 81301 dzufelt@greenanalytical.com p: 970.247.4220 f: 970.247.4227 75 Suttle Street Durango, CO 81303 www.GreenAnalytical.com Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte General Chemistry - Quality Control (Continued) Batch B201914 - General Prep - Wet Chem Prepared & Analyzed: 09/18/20 Blank (B201914-BLK1) Total Dissolved Solids ND 10.0 mg/L Prepared & Analyzed: 09/18/20 Source: 2009173-01Duplicate (B201914-DUP1) Total Dissolved Solids 335 10.0 345 202.94mg/L Prepared & Analyzed: 09/18/20 Reference (B201914-SRM1) Total Dissolved Solids 360 10.0 380 85-11594.7mg/L Batch B201915 - General Prep - Wet Chem Prepared & Analyzed: 09/18/20 Blank (B201915-BLK1) Alkalinity, Total as CaCO3 ND 10.0 mg/L Prepared & Analyzed: 09/18/20 LCS (B201915-BS1) Alkalinity, Total as CaCO3 97.0 10.0 100 85-11597.0mg/L Prepared & Analyzed: 09/18/20 LCS Dup (B201915-BSD1) Alkalinity, Total as CaCO3 101 10.0 100 2085-115101 4.04mg/L Batch B201924 - General Prep - Wet Chem Prepared: 09/18/20 Analyzed: 09/23/20 Blank (B201924-BLK1) Ammonia as N ND 0.100 mg NH3-N/L Prepared: 09/18/20 Analyzed: 09/23/20 LCS (B201924-BS1) Ammonia as N 2.63 0.100 2.50 90-110105mg NH3-N/L Prepared: 09/18/20 Analyzed: 09/23/20 LCS Dup (B201924-BSD1) Ammonia as N 2.62 0.100 2.50 2090-110105 0.465mg NH3-N/L Batch B201943 - General Prep - Wet Chem Prepared & Analyzed: 09/22/20 Blank (B201943-BLK1) Sulfide ND 0.0500 mg/L Prepared & Analyzed: 09/22/20 LCS (B201943-BS1) Sulfide 0.238 0.0500 0.250 85-11595.2mg/L Prepared & Analyzed: 09/22/20 LCS Dup (B201943-BSD1) Sulfide 0.240 0.0500 0.250 2085-11596.0 0.837mg/L Batch B201995 - General Prep - Wet Chem Prepared & Analyzed: 09/23/20 Blank (B201995-BLK1) Debbie Zufelt, Reports Manager Green Analytical Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. In no event shall Green Analytical Laboratories be liable for incidental or consequential damages . GALs liability, and clients exclusive remedy for any claim arising, shall be limited to the amount paid by client for analyses. All claims, including those for negligence and any other cause whatsoever, shall be deemed waived unless made in writing and received within thirty days after completion of the applicable service. Page 9 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Project: Project Name / Number: Project Manager: Reported: SGM 555 Rivergate Lane, SuiteB4-82 Ascendigo Levitt Wells Bailey Leppek Public DW Full Suite 10/14/20 15:29Durango CO, 81301 dzufelt@greenanalytical.com p: 970.247.4220 f: 970.247.4227 75 Suttle Street Durango, CO 81303 www.GreenAnalytical.com Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte General Chemistry - Quality Control (Continued) Batch B201995 - General Prep - Wet Chem (Continued) Prepared & Analyzed: 09/23/20 Blank (B201995-BLK1) (Continued) Bromide ND 0.100 mg/L Chloride ND 1.00 mg/L Fluoride ND 0.100 mg/L Sulfate ND 1.00 mg/L Prepared & Analyzed: 09/23/20 LCS (B201995-BS1) Bromide 2.45 0.100 2.50 90-11097.9mg/L Chloride 24.0 1.00 25.0 90-11095.9mg/L Fluoride 2.56 0.100 2.50 90-110103mg/L Sulfate 24.6 1.00 25.0 90-11098.3mg/L Prepared & Analyzed: 09/23/20 LCS Dup (B201995-BSD1) Bromide 2.45 0.100 2.50 2090-11098.2 0.286mg/L Chloride 23.8 1.00 25.0 2090-11095.2 0.728mg/L Fluoride 2.58 0.100 2.50 2090-110103 0.739mg/L Sulfate 24.7 1.00 25.0 2090-11098.7 0.434mg/L Debbie Zufelt, Reports Manager Green Analytical Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. In no event shall Green Analytical Laboratories be liable for incidental or consequential damages . GALs liability, and clients exclusive remedy for any claim arising, shall be limited to the amount paid by client for analyses. All claims, including those for negligence and any other cause whatsoever, shall be deemed waived unless made in writing and received within thirty days after completion of the applicable service. Page 10 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Project: Project Name / Number: Project Manager: Reported: SGM 555 Rivergate Lane, SuiteB4-82 Ascendigo Levitt Wells Bailey Leppek Public DW Full Suite 10/14/20 15:29Durango CO, 81301 dzufelt@greenanalytical.com p: 970.247.4220 f: 970.247.4227 75 Suttle Street Durango, CO 81303 www.GreenAnalytical.com Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Total Recoverable Metals by ICP (E200.7) - Quality Control Batch B201993 - Total Rec. 200.7/200.8/200.2 Prepared: 09/23/20 Analyzed: 09/25/20 Blank (B201993-BLK1) Aluminum ND 0.050 mg/L Calcium ND 0.100 mg/L Iron ND 0.050 mg/L Magnesium ND 0.100 mg/L Potassium ND 1.00 mg/L Sodium ND 1.00 mg/L Prepared: 09/23/20 Analyzed: 09/25/20 LCS (B201993-BS1) Aluminum 4.02 0.050 4.00 85-115101mg/L Calcium 4.12 0.100 4.00 85-115103mg/L Iron 3.95 0.050 4.00 85-11598.8mg/L Magnesium 21.2 0.100 20.0 85-115106mg/L Potassium 8.26 1.00 8.00 85-115103mg/L Sodium 3.41 1.00 3.24 85-115105mg/L Prepared: 09/23/20 Analyzed: 09/25/20 LCS Dup (B201993-BSD1) Aluminum 4.02 0.050 4.00 2085-115101 0.0719mg/L Calcium 4.12 0.100 4.00 2085-115103 0.0685mg/L Iron 3.93 0.050 4.00 2085-11598.3 0.507mg/L Magnesium 21.2 0.100 20.0 2085-115106 0.0774mg/L Potassium 8.28 1.00 8.00 2085-115104 0.296mg/L Sodium 3.39 1.00 3.24 2085-115105 0.521mg/L Debbie Zufelt, Reports Manager Green Analytical Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. In no event shall Green Analytical Laboratories be liable for incidental or consequential damages . GALs liability, and clients exclusive remedy for any claim arising, shall be limited to the amount paid by client for analyses. All claims, including those for negligence and any other cause whatsoever, shall be deemed waived unless made in writing and received within thirty days after completion of the applicable service. Page 11 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Project: Project Name / Number: Project Manager: Reported: SGM 555 Rivergate Lane, SuiteB4-82 Ascendigo Levitt Wells Bailey Leppek Public DW Full Suite 10/14/20 15:29Durango CO, 81301 dzufelt@greenanalytical.com p: 970.247.4220 f: 970.247.4227 75 Suttle Street Durango, CO 81303 www.GreenAnalytical.com Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Total Recoverable Metals by ICPMS (E200.8) - Quality Control Batch B201994 - Total Rec. 200.7/200.8/200.2 Prepared: 09/23/20 Analyzed: 09/29/20 Blank (B201994-BLK1) Antimony ND 0.0020 mg/L Arsenic ND 0.0010 mg/L Barium ND 0.0005 mg/L Beryllium ND 0.0005 mg/L Cadmium ND 0.0005 mg/L Chromium ND 0.0020 mg/L Copper ND 0.0005 mg/L Lead ND 0.0005 mg/L Manganese ND 0.0020 mg/L Nickel ND 0.0005 mg/L Selenium ND 0.0010 mg/L Thallium ND 0.0005 mg/L Zinc ND 0.0100 mg/L Prepared: 09/23/20 Analyzed: 09/29/20 LCS (B201994-BS1) Antimony 0.0520 0.0020 0.0500 85-115104mg/L Arsenic 0.0482 0.0010 0.0500 85-11596.3mg/L Barium 0.0487 0.0005 0.0500 85-11597.4mg/L Beryllium 0.0462 0.0005 0.0500 85-11592.3mg/L Cadmium 0.0504 0.0005 0.0500 85-115101mg/L Chromium 0.0554 0.0020 0.0500 85-115111mg/L Copper 0.0520 0.0005 0.0500 85-115104mg/L Lead 0.0503 0.0005 0.0500 85-115101mg/L Manganese 0.0521 0.0020 0.0500 85-115104mg/L Nickel 0.0503 0.0005 0.0500 85-115101mg/L Selenium 0.259 0.0010 0.250 85-115104mg/L Thallium 0.0482 0.0005 0.0500 85-11596.3mg/L Zinc 0.0532 0.0100 0.0500 85-115106mg/L Prepared: 09/23/20 Analyzed: 09/29/20 LCS Dup (B201994-BSD1) Antimony 0.0568 0.0020 0.0500 2085-115114 8.73mg/L Arsenic 0.0532 0.0010 0.0500 2085-115106 9.90mg/L Barium 0.0524 0.0005 0.0500 2085-115105 7.37mg/L Beryllium 0.0456 0.0005 0.0500 2085-11591.2 1.20mg/L Cadmium 0.0547 0.0005 0.0500 2085-115109 8.20mg/L Chromium 0.0566 0.0020 0.0500 2085-115113 2.26mg/L Copper 0.0561 0.0005 0.0500 2085-115112 7.56mg/L Lead 0.0559 0.0005 0.0500 2085-115112 10.5mg/L Manganese 0.0568 0.0020 0.0500 2085-115114 8.54mg/L Nickel 0.0561 0.0005 0.0500 2085-115112 10.8mg/L Debbie Zufelt, Reports Manager Green Analytical Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. In no event shall Green Analytical Laboratories be liable for incidental or consequential damages . GALs liability, and clients exclusive remedy for any claim arising, shall be limited to the amount paid by client for analyses. All claims, including those for negligence and any other cause whatsoever, shall be deemed waived unless made in writing and received within thirty days after completion of the applicable service. Page 12 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Project: Project Name / Number: Project Manager: Reported: SGM 555 Rivergate Lane, SuiteB4-82 Ascendigo Levitt Wells Bailey Leppek Public DW Full Suite 10/14/20 15:29Durango CO, 81301 dzufelt@greenanalytical.com p: 970.247.4220 f: 970.247.4227 75 Suttle Street Durango, CO 81303 www.GreenAnalytical.com Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Total Recoverable Metals by ICPMS (E200.8) - Quality Control (Continued) Batch B201994 - Total Rec. 200.7/200.8/200.2 (Continued) Prepared: 09/23/20 Analyzed: 09/29/20 LCS Dup (B201994-BSD1) (Continued) Selenium 0.277 0.0010 0.250 2085-115111 6.86mg/L Thallium 0.0554 0.0005 0.0500 2085-115111 14.0mg/L Zinc 0.0491 0.0100 0.0500 2085-11598.3 7.91mg/L Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Total Mercury by CVAA - Quality Control Batch B201931 - EPA 245.1/7470 Prepared: 09/18/20 Analyzed: 09/22/20 Blank (B201931-BLK1) Mercury ND 0.0002 mg/L Prepared: 09/18/20 Analyzed: 09/22/20 LCS (B201931-BS1) Mercury 0.0047 0.0002 0.00500 85-11594.5mg/L Prepared: 09/18/20 Analyzed: 09/22/20 LCS Dup (B201931-BSD1) Mercury 0.0047 0.0002 0.00500 2085-11593.2 1.47mg/L Debbie Zufelt, Reports Manager Green Analytical Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. In no event shall Green Analytical Laboratories be liable for incidental or consequential damages . GALs liability, and clients exclusive remedy for any claim arising, shall be limited to the amount paid by client for analyses. All claims, including those for negligence and any other cause whatsoever, shall be deemed waived unless made in writing and received within thirty days after completion of the applicable service. Page 13 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Project: Project Name / Number: Project Manager: Reported: SGM 555 Rivergate Lane, SuiteB4-82 Ascendigo Levitt Wells Bailey Leppek Public DW Full Suite 10/14/20 15:29Durango CO, 81301 dzufelt@greenanalytical.com p: 970.247.4220 f: 970.247.4227 75 Suttle Street Durango, CO 81303 www.GreenAnalytical.com Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Organic Compounds - Quality Control Batch 0092202 - Volatiles Prepared & Analyzed: 09/22/20 Blank (0092202-BLK1) 1,1,1,2-Tetrachloroethane ND 0.500 ug/L 1,1,1-Trichloroethane ND 0.500 ug/L 1,1,2,2-Tetrachloroethane ND 0.500 ug/L 1,1,2-Trichloroethane ND 0.500 ug/L 1,1-Dichloroethane ND 0.500 ug/L 1,1-Dichloroethene ND 0.500 ug/L 1,1-Dichloropropene ND 0.500 ug/L 1,2,3-Trichlorobenzene ND 0.500 ug/L 1,2,3-Trichloropropane ND 0.500 ug/L 1,2,4-Trichlorobenzene ND 0.500 ug/L 1,2,4-Trimethylbenzene ND 0.500 ug/L 1,2-Dichlorobenzene ND 0.500 ug/L 1,2-Dichloroethane ND 0.500 ug/L 1,2-Dichloropropane ND 0.500 ug/L 1,3,5-Trimethylbenzene ND 0.500 ug/L 1,3-Dichlorobenzene ND 0.500 ug/L 1,3-Dichloropropane ND 0.500 ug/L 1,4 Dichlorobenzene ND 0.500 ug/L 2,2-Dichloropropane ND 0.500 ug/L 2-Chlorotoluene ND 0.500 ug/L 25.0 76.4-114Surrogate: 4-Bromofluorobenzene 99.424.8 ug/L 4-Chlorotoluene ND 0.500 ug/L Benzene ND 0.500 ug/L Bromobenzene ND 0.500 ug/L Bromochloromethane ND 0.500 ug/L Bromodichloromethane ND 0.500 ug/L Bromoform ND 0.500 ug/L Bromomethane ND 0.500 ug/L Carbon tetrachloride ND 0.500 ug/L Chlorobenzene ND 0.500 ug/L Chloroethane ND 0.500 ug/L Chloroform ND 0.500 ug/L Chloromethane ND 0.500 ug/L cis-1,2-Dichloroethene ND 0.500 ug/L cis-1,3-Dichloropropene ND 0.500 ug/L Dibromochloromethane ND 0.500 ug/L 25.0 82.4-141Surrogate: Dibromofluoromethane 11428.5 ug/L Dibromomethane ND 0.500 ug/L Dichlorodifluoromethane ND 0.500 ug/L Debbie Zufelt, Reports Manager Green Analytical Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. In no event shall Green Analytical Laboratories be liable for incidental or consequential damages . GALs liability, and clients exclusive remedy for any claim arising, shall be limited to the amount paid by client for analyses. All claims, including those for negligence and any other cause whatsoever, shall be deemed waived unless made in writing and received within thirty days after completion of the applicable service. Page 14 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Project: Project Name / Number: Project Manager: Reported: SGM 555 Rivergate Lane, SuiteB4-82 Ascendigo Levitt Wells Bailey Leppek Public DW Full Suite 10/14/20 15:29Durango CO, 81301 dzufelt@greenanalytical.com p: 970.247.4220 f: 970.247.4227 75 Suttle Street Durango, CO 81303 www.GreenAnalytical.com Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Organic Compounds - Quality Control (Continued) Batch 0092202 - Volatiles (Continued) Prepared & Analyzed: 09/22/20 Blank (0092202-BLK1) (Continued) Ethylbenzene ND 0.500 ug/L Hexachlorobutadiene ND 0.500 ug/L Isopropylbenzene ND 0.500 ug/L m+p - Xylene ND 1.00 ug/L Methylene chloride ND 0.500 ug/L Naphthalene ND 0.500 ug/L n-Butylbenzene ND 0.500 ug/L n-Propylbenzene ND 0.500 ug/L o-Xylene ND 0.500 ug/L p-Isopropyltoluene ND 0.500 ug/L sec-Butylbenzene ND 0.500 ug/L Styrene ND 0.500 ug/L tert-Butylbenzene ND 0.500 ug/L Tetrachloroethene ND 0.500 ug/L Toluene ND 0.500 ug/L 25.0 87.1-110Surrogate: Toluene-d8 98.524.6 ug/L Total Xylenes ND 1.50 ug/L trans-1,2-Dichloroethene ND 0.500 ug/L trans-1,3-Dichloropropene ND 0.500 ug/L Trichloroethene ND 0.500 ug/L Trichlorofluoromethane ND 0.500 ug/L Vinyl chloride ND 0.500 ug/L Prepared & Analyzed: 09/22/20 LCS (0092202-BS1) 1,1,1,2-Tetrachloroethane 22.2 0.500 20.0 77.2-132111ug/L 1,1,1-Trichloroethane 21.7 0.500 20.0 84.9-121108ug/L 1,1,2,2-Tetrachloroethane 20.3 0.500 20.0 83-118102ug/L 1,1,2-Trichloroethane 20.9 0.500 20.0 85.8-121105ug/L 1,1-Dichloroethane 22.7 0.500 20.0 82.3-134113ug/L 1,1-Dichloroethene 19.6 0.500 20.0 69.4-13598.0ug/L 1,1-Dichloropropene 20.7 0.500 20.0 79-126104ug/L 1,2,3-Trichlorobenzene 20.4 0.500 20.0 66-144102ug/L 1,2,3-Trichloropropane 20.0 0.500 20.0 8.33-216100ug/L 1,2,4-Trichlorobenzene 20.9 0.500 20.0 66-139105ug/L 1,2,4-Trimethylbenzene 21.4 0.500 20.0 85.2-120107ug/L 1,2-Dichlorobenzene 20.2 0.500 20.0 85.1-112101ug/L 1,2-Dichloroethane 22.0 0.500 20.0 80.8-125110ug/L 1,2-Dichloropropane 21.6 0.500 20.0 83.2-124108ug/L 1,3,5-Trimethylbenzene 21.2 0.500 20.0 84.3-120106ug/L Debbie Zufelt, Reports Manager Green Analytical Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. In no event shall Green Analytical Laboratories be liable for incidental or consequential damages . GALs liability, and clients exclusive remedy for any claim arising, shall be limited to the amount paid by client for analyses. All claims, including those for negligence and any other cause whatsoever, shall be deemed waived unless made in writing and received within thirty days after completion of the applicable service. Page 15 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Project: Project Name / Number: Project Manager: Reported: SGM 555 Rivergate Lane, SuiteB4-82 Ascendigo Levitt Wells Bailey Leppek Public DW Full Suite 10/14/20 15:29Durango CO, 81301 dzufelt@greenanalytical.com p: 970.247.4220 f: 970.247.4227 75 Suttle Street Durango, CO 81303 www.GreenAnalytical.com Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Organic Compounds - Quality Control (Continued) Batch 0092202 - Volatiles (Continued) Prepared & Analyzed: 09/22/20 LCS (0092202-BS1) (Continued) 1,3-Dichlorobenzene 20.1 0.500 20.0 84.9-110100ug/L 1,3-Dichloropropane 21.4 0.500 20.0 88.8-117107ug/L 1,4 Dichlorobenzene 19.2 0.500 20.0 80.9-11296.2ug/L 2,2-Dichloropropane 24.5 0.500 20.0 59.7-146123ug/L 2-Chlorotoluene 20.6 0.500 20.0 84.7-117103ug/L 25.0 76.4-114Surrogate: 4-Bromofluorobenzene 99.724.9 ug/L 4-Chlorotoluene 20.4 0.500 20.0 81.8-122102ug/L Benzene 21.1 0.500 20.0 85.9-114105ug/L Bromobenzene 20.3 0.500 20.0 85.7-113101ug/L Bromochloromethane 23.7 0.500 20.0 74.2-140119ug/L Bromodichloromethane 23.4 0.500 20.0 82-126117ug/L Bromoform 25.9 0.500 20.0 80.3-140130ug/L Bromomethane 20.9 0.500 20.0 69.3-136105ug/L Carbon tetrachloride 22.2 0.500 20.0 85.8-125111ug/L Chlorobenzene 20.9 0.500 20.0 88.8-112104ug/L Chloroethane 21.6 0.500 20.0 73.8-135108ug/L Chloroform 22.5 0.500 20.0 88.1-124112ug/L Chloromethane 23.0 0.500 20.0 59.9-154115ug/L cis-1,2-Dichloroethene 20.7 0.500 20.0 85.8-117104ug/L cis-1,3-Dichloropropene 21.9 0.500 20.0 84.6-125110ug/L Dibromochloromethane 22.7 0.500 20.0 88.2-121114ug/L 25.0 82.4-141Surrogate: Dibromofluoromethane 10927.1 ug/L Dibromomethane 22.7 0.500 20.0 73.5-132114ug/L Dichlorodifluoromethane 17.8 0.500 20.0 63.3-13289.0ug/L Ethylbenzene 20.7 0.500 20.0 81.8-127104ug/L Hexachlorobutadiene 19.0 0.500 20.0 52.9-15294.8ug/L Isopropylbenzene 20.4 0.500 20.0 75.7-136102ug/L m+p - Xylene 41.6 1.00 40.0 72.4-134104ug/L Methylene chloride 22.1 0.500 20.0 74.8-131111ug/L Naphthalene 19.0 0.500 20.0 59.3-14094.9ug/L n-Butylbenzene 19.6 0.500 20.0 70.1-13698.0ug/L n-Propylbenzene 20.8 0.500 20.0 83-121104ug/L o-Xylene 20.9 0.500 20.0 76.2-135104ug/L p-Isopropyltoluene 20.2 0.500 20.0 81.8-124101ug/L sec-Butylbenzene 20.1 0.500 20.0 78.4-128100ug/L Styrene 21.6 0.500 20.0 75.7-128108ug/L tert-Butylbenzene 21.2 0.500 20.0 90.8-119106ug/L Tetrachloroethene 16.3 0.500 20.0 66.8-12681.3ug/L Toluene 20.2 0.500 20.0 78.8-121101ug/L Debbie Zufelt, Reports Manager Green Analytical Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. In no event shall Green Analytical Laboratories be liable for incidental or consequential damages . GALs liability, and clients exclusive remedy for any claim arising, shall be limited to the amount paid by client for analyses. All claims, including those for negligence and any other cause whatsoever, shall be deemed waived unless made in writing and received within thirty days after completion of the applicable service. Page 16 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Project: Project Name / Number: Project Manager: Reported: SGM 555 Rivergate Lane, SuiteB4-82 Ascendigo Levitt Wells Bailey Leppek Public DW Full Suite 10/14/20 15:29Durango CO, 81301 dzufelt@greenanalytical.com p: 970.247.4220 f: 970.247.4227 75 Suttle Street Durango, CO 81303 www.GreenAnalytical.com Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Organic Compounds - Quality Control (Continued) Batch 0092202 - Volatiles (Continued) Prepared & Analyzed: 09/22/20 LCS (0092202-BS1) (Continued) 25.0 87.1-110Surrogate: Toluene-d8 10125.3 ug/L Total Xylenes 62.5 1.50 60.0 74.3-134104ug/L trans-1,2-Dichloroethene 20.8 0.500 20.0 80.4-125104ug/L trans-1,3-Dichloropropene 22.8 0.500 20.0 84-128114ug/L Trichloroethene 18.5 0.500 20.0 73.1-11792.6ug/L Trichlorofluoromethane 21.4 0.500 20.0 71.9-138107ug/L Vinyl chloride 20.0 0.500 20.0 73.4-137100ug/L Prepared & Analyzed: 09/22/20 LCS Dup (0092202-BSD1) 1,1,1,2-Tetrachloroethane 22.2 0.500 20.0 2077.2-132111 0.00ug/L 1,1,1-Trichloroethane 21.3 0.500 20.0 2084.9-121107 1.77ug/L 1,1,2,2-Tetrachloroethane 20.7 0.500 20.0 2083-118104 1.80ug/L 1,1,2-Trichloroethane 20.7 0.500 20.0 2085.8-121103 1.25ug/L 1,1-Dichloroethane 22.4 0.500 20.0 2082.3-134112 1.51ug/L 1,1-Dichloroethene 19.7 0.500 20.0 2069.4-13598.4 0.407ug/L 1,1-Dichloropropene 19.4 0.500 20.0 2079-12697.2 6.38ug/L 1,2,3-Trichlorobenzene 18.5 0.500 20.0 2066-14492.7 9.36ug/L 1,2,3-Trichloropropane 19.7 0.500 20.0 208.33-21698.6 1.56ug/L 1,2,4-Trichlorobenzene 19.0 0.500 20.0 2066-13994.8 9.73ug/L 1,2,4-Trimethylbenzene 20.8 0.500 20.0 2085.2-120104 2.89ug/L 1,2-Dichlorobenzene 20.1 0.500 20.0 2085.1-112100 0.645ug/L 1,2-Dichloroethane 21.0 0.500 20.0 2080.8-125105 4.37ug/L 1,2-Dichloropropane 21.1 0.500 20.0 2083.2-124105 2.48ug/L 1,3,5-Trimethylbenzene 20.6 0.500 20.0 2084.3-120103 2.88ug/L 1,3-Dichlorobenzene 20.0 0.500 20.0 2084.9-110100 0.499ug/L 1,3-Dichloropropane 20.6 0.500 20.0 2088.8-117103 3.86ug/L 1,4 Dichlorobenzene 19.0 0.500 20.0 2080.9-11294.9 1.41ug/L 2,2-Dichloropropane 24.5 0.500 20.0 2059.7-146122 0.163ug/L 2-Chlorotoluene 20.5 0.500 20.0 2084.7-117103 0.486ug/L 25.0 76.4-114Surrogate: 4-Bromofluorobenzene 10025.1 ug/L 4-Chlorotoluene 20.2 0.500 20.0 2081.8-122101 0.788ug/L Benzene 20.5 0.500 20.0 2085.9-114102 3.03ug/L Bromobenzene 20.0 0.500 20.0 2085.7-11399.9 1.39ug/L Bromochloromethane 23.0 0.500 20.0 2074.2-140115 3.08ug/L Bromodichloromethane 22.3 0.500 20.0 2082-126112 4.64ug/L Bromoform 25.9 0.500 20.0 2080.3-140130 0.116ug/L Bromomethane 20.1 0.500 20.0 2069.3-136100 4.15ug/L Carbon tetrachloride 21.5 0.500 20.0 2085.8-125108 3.02ug/L Chlorobenzene 20.3 0.500 20.0 2088.8-112101 2.82ug/L Debbie Zufelt, Reports Manager Green Analytical Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. In no event shall Green Analytical Laboratories be liable for incidental or consequential damages . GALs liability, and clients exclusive remedy for any claim arising, shall be limited to the amount paid by client for analyses. All claims, including those for negligence and any other cause whatsoever, shall be deemed waived unless made in writing and received within thirty days after completion of the applicable service. Page 17 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Project: Project Name / Number: Project Manager: Reported: SGM 555 Rivergate Lane, SuiteB4-82 Ascendigo Levitt Wells Bailey Leppek Public DW Full Suite 10/14/20 15:29Durango CO, 81301 dzufelt@greenanalytical.com p: 970.247.4220 f: 970.247.4227 75 Suttle Street Durango, CO 81303 www.GreenAnalytical.com Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Organic Compounds - Quality Control (Continued) Batch 0092202 - Volatiles (Continued) Prepared & Analyzed: 09/22/20 LCS Dup (0092202-BSD1) (Continued) Chloroethane 20.8 0.500 20.0 2073.8-135104 4.15ug/L Chloroform 21.9 0.500 20.0 2088.1-124109 2.75ug/L Chloromethane 19.0 0.500 20.0 2059.9-15495.2 19.0ug/L cis-1,2-Dichloroethene 20.1 0.500 20.0 2085.8-117100 3.04ug/L cis-1,3-Dichloropropene 21.2 0.500 20.0 2084.6-125106 3.62ug/L Dibromochloromethane 22.4 0.500 20.0 2088.2-121112 1.37ug/L 25.0 82.4-141Surrogate: Dibromofluoromethane 10927.2 ug/L Dibromomethane 21.8 0.500 20.0 2073.5-132109 4.13ug/L Dichlorodifluoromethane 16.8 0.500 20.0 2063.3-13284.0 5.72ug/L Ethylbenzene 20.5 0.500 20.0 2081.8-127102 1.26ug/L Hexachlorobutadiene 17.3 0.500 20.0 2052.9-15286.6 8.93ug/L Isopropylbenzene 20.5 0.500 20.0 2075.7-136102 0.196ug/L m+p - Xylene 41.0 1.00 40.0 2072.4-134102 1.53ug/L Methylene chloride 21.6 0.500 20.0 2074.8-131108 2.24ug/L Naphthalene 18.0 0.500 20.0 2059.3-14089.8 5.58ug/L n-Butylbenzene 19.0 0.500 20.0 2070.1-13695.2 3.00ug/L n-Propylbenzene 20.3 0.500 20.0 2083-121101 2.29ug/L o-Xylene 20.6 0.500 20.0 2076.2-135103 1.30ug/L p-Isopropyltoluene 19.7 0.500 20.0 2081.8-12498.4 2.85ug/L sec-Butylbenzene 19.8 0.500 20.0 2078.4-12898.9 1.51ug/L Styrene 21.4 0.500 20.0 2075.7-128107 1.30ug/L tert-Butylbenzene 20.9 0.500 20.0 2090.8-119104 1.48ug/L Tetrachloroethene 16.4 0.500 20.0 2066.8-12682.0 0.796ug/L Toluene 19.9 0.500 20.0 2078.8-12199.3 1.60ug/L 25.0 87.1-110Surrogate: Toluene-d8 10025.0 ug/L Total Xylenes 61.6 1.50 60.0 2074.3-134103 1.45ug/L trans-1,2-Dichloroethene 20.6 0.500 20.0 2080.4-125103 0.580ug/L trans-1,3-Dichloropropene 22.4 0.500 20.0 2084-128112 1.55ug/L Trichloroethene 18.1 0.500 20.0 2073.1-11790.4 2.40ug/L Trichlorofluoromethane 21.2 0.500 20.0 2071.9-138106 1.13ug/L Vinyl chloride 19.3 0.500 20.0 2073.4-13796.4 3.77ug/L Debbie Zufelt, Reports Manager Green Analytical Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. In no event shall Green Analytical Laboratories be liable for incidental or consequential damages . GALs liability, and clients exclusive remedy for any claim arising, shall be limited to the amount paid by client for analyses. All claims, including those for negligence and any other cause whatsoever, shall be deemed waived unless made in writing and received within thirty days after completion of the applicable service. Page 18 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Project: Project Name / Number: Project Manager: Reported: SGM 555 Rivergate Lane, SuiteB4-82 Ascendigo Levitt Wells Bailey Leppek Public DW Full Suite 10/14/20 15:29Durango CO, 81301 dzufelt@greenanalytical.com p: 970.247.4220 f: 970.247.4227 75 Suttle Street Durango, CO 81303 www.GreenAnalytical.com Notes and Definitions DET Sample results reported on a dry weight basis Relative Percent DifferenceRPD dry Not ReportedNR Analyte NOT DETECTED at or above the reporting limitND Analyte DETECTED *Results reported on as received basis unless designated as dry. Laboratory Control Sample (Blank Spike)LCS RL MDL Report Limit Method Detection Limit Debbie Zufelt, Reports Manager Green Analytical Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. In no event shall Green Analytical Laboratories be liable for incidental or consequential damages . GALs liability, and clients exclusive remedy for any claim arising, shall be limited to the amount paid by client for analyses. All claims, including those for negligence and any other cause whatsoever, shall be deemed waived unless made in writing and received within thirty days after completion of the applicable service. Page 19 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Page 20 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 EMSL Analytical, Inc. 200 Route 130 North Cinnaminson, NJ 08077 Phone/Fax: (800) 220-3675 / (856) 786-5974 http://www.EMSL.com / cinnasblab@EMSL.com GRNA25 042022572 GA20-363 EMSL Order ID: Customer ID: Customer PO: Project ID: Attn: Phone: (970) 247-4220 Fax: Received: 09/17/2020 Analyzed: 10/01/2020 Debbie Zufelt Green Analytical 75 Suttle Street Durango, CO 81303 2009-173.01Proj: Test Report: Determination of Asbestos Structures >10m in Drinking Water Performed by the 100.2 Method (EPA 600/R-94/134) Sample Filtration Date/Time Sample ID Client / EMSL ASBESTOS Confidence Limits ConcentrationAnalytical Sensitivity Fibers Detected Asbestos TypesArea Analyzed (mm†) Effective Filter Area (mm†) Original Sample Vol. Filtered (ml)MFL (million fibers per liter) 0.19ND <0.19 0.00 - 0.70None Detected9/17/2020 11:00 AM 1365 0.143050Levitt Wells 042022572-0001 09/15/2020 13:34 PMCollection Date/Time: Page 1 of 1Test Report: TEM100.2-2.2.0.2 Printed: 10/01/2020 06:46PM Analyst(s) Samantha Rundstrom, Laboratory Manager or Other Approved Signatory Any questions please contact Samantha Rundstrom-Cruz. EMSL maintains liability limited to cost of analysis. Interpretation and use of test results are the responsibility of the client. This report relates only to the samples reported above, and may not be reproduced, except in full, without written approval by EMSL. EMSL bears no responsibility for sample collection activities or analytical method limitations. The report reflects the samples as received. Results are generated from the field sampling data (sampling volumes and areas, locations, etc.) provided by the client on the Chain of Custody. Samples are within quality control criteria and met method specifications unless otherwise noted. Estimation of uncertainty is available on request. Sample collection and containers provided by the client, acceptable bottle blank level is defined as 0.01MFL>10um. ND=None Detected. No Fibers Detected: the value will be reported as less than 369% of the concentration equivalent to one fiber. 1 to 4 fibers: The result will be reported as less than the corresponding upper 95% confidence limit (Poisson),5 to 30 fibers: Mean and 95% confidence intervals will be reported on the basis of the Poisson assumption. When more than 30 fibers are counted, both the Gaussian 95% confidence interval and the Poisson 95% confidence interval will be calculated. The large of these two intervals will be selected for data reporting. When the Gaussian 95% confidence interval is selected for data reporting, the Poisson will also be noted. Samples analyzed by EMSL Analytical, Inc. Cinnaminson, NJ NELAC NYS ELAP 10872, NJ DEP 03036, FL DOH E87975, PA ID# 68-00367 Debbie Little (1) Initial report from: 10/01/2020 18:46:46 Page 21 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 LABORATORY REPORT This report may not be reproduced, except in full, without written approval from EEA. If you have any questions concerning this report, please do not hesitate to call us at (800) 332-4345 or (574) 233-4777. Page 1 of 6Page 22 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Revision date:09/29/2020 STATE CERTIFICATION LIST State Certification State Certification Alabama 40700 Missouri 880 Alaska IN00035 Montana CERT0026 Arizona AZ0432 Nebraska NE-OS-05-04 Arkansas IN00035 Nevada IN00035 California 2920 New Hampshire* 2124 Colorado IN00035 New Jersey* IN598 Colorado Radiochemistry IN00035 New Mexico IN00035 Connecticut PH-0132 New York* 11398 Delaware IN035 North Carolina 18700 Florida(Primary AB)* E87775 North Dakota R-035 Georgia 929 Ohio 87775 Hawaii IN035 Oklahoma D9508 Idaho IN00035 Oregon* 4156 Illinois* 200001 Pennsylvania* 68-00466 Illinois Microbiology 17767 Puerto Rico IN00035 Illinois Radiochemistry IN00035 Rhode Island LAO00343 Indiana Chemistry C-71-01 South Carolina 95005 Indiana Microbiology M-76-07 South Dakota IN00035 Iowa 098 Tennessee TN02973 Kansas* E-10233 Texas* T104704187 Kentucky 90056 Texas/TCEQ TX207 Louisiana* LA014 Utah* IN00035 Maine IN00035 Vermont VT-8775 Maryland 209 Virginia* 460275 Massachusetts M-IN035 Washington C837 Michigan 9926 West Virginia 9927 C Minnesota* 018-999-338 Wisconsin 999766900 Mississippi IN035 Wyoming IN035 EPA IN00035 *NELAP/TNI Recognized Accreditation Bodies Page 2 of 6Page 23 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Laboratory Report Client: Attn: Report: Priority: Status: PW S ID: Green Analytical Laboratories Debbie Zufelt 75 Suttle Street 498426 Not Supplied Standard W ritten Final Durango, CO 81303 110 South Hill Street South Bend, IN 46617 Tel: (574) 233-4777 Fax: (574) 233-8207 1 800 332 4345 *NR = The chlorine demand was not performed for this analytical sample, at the request of the client. EEA ID # Client ID Method Collected Date / Time Collected By: Received Date / Time 4727862 Levitt Wells 525.2 09/15/20 13:34 Client 09/17/20 10:00 4727863 Levitt Wells 547 09/15/20 13:34 Client 09/17/20 10:00 Sample Information Report Summary Detailed quantitative results are presented on the following pages. The results presented relate only to the samples provided for analysis. W e appreciate the opportunity to provide you with this analysis . If you have any questions concerning this report, please do not hesitate to call Shea Greiner at (574) 233-4777. Note: This report may not be reproduced, except in full, without written approval from EEA. Client Name: Report #: Green Analytical Laboratories 498426 Authorized Signature Title Date 10/05/2020 Page 1 of 3 Page 3 of 6Page 24 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Client Name:Report #:498426Green Analytical Laboratories Sampling Point:PW S ID:Levitt W ells Not Supplied Semi-volatile Organic Chemicals Analyte ID # Analyte Method Reg Limit MRL Result Units Preparation Date Analyzed EEA ID # 472786209/29/20 16:0409/28/20 08:31ug/L< 0.10.12 *525.2Alachlor15972-60-8 472786209/29/20 16:0409/28/20 08:31ug/L< 0.10.1---525.2Aldrin309-00-2 472786209/29/20 16:0409/28/20 08:31ug/L< 0.10.13 *525.2Atrazine1912-24-9 472786209/29/20 16:0409/28/20 08:31ug/L< 0.020.020.2 *525.2Benzo(a)pyrene50-32-8 472786209/29/20 16:0409/28/20 08:31ug/L< 0.020.020.2 *525.2gamma-BHC (Lindane)58-89-9 472786209/29/20 16:0409/28/20 08:31ug/L< 0.10.1---525.2Butachlor23184-66-9 472786209/29/20 16:0409/28/20 08:31ug/L< 0.10.1---525.2Dieldrin60-57-1 472786209/29/20 16:0409/28/20 08:31ug/L< 0.60.6400 *525.2Di(2-ethylhexyl)adipate103-23-1 472786209/29/20 16:0409/28/20 08:31ug/L< 0.60.66 *525.2Di(2-ethylhexyl)phthalate117-81-7 472786209/29/20 16:0409/28/20 08:31ug/L< 0.010.012 *525.2Endrin72-20-8 472786209/29/20 16:0409/28/20 08:31ug/L< 0.040.040.4 *525.2Heptachlor76-44-8 472786209/29/20 16:0409/28/20 08:31ug/L< 0.020.020.2 *525.2Heptachlor epoxide1024-57-3 472786209/29/20 16:0409/28/20 08:31ug/L< 0.10.11 *525.2Hexachlorobenzene118-74-1 472786209/29/20 16:0409/28/20 08:31ug/L< 0.10.150 *525.2Hexachlorocyclopentadiene77-47-4 472786209/29/20 16:0409/28/20 08:31ug/L< 0.10.140 *525.2Methoxychlor72-43-5 472786209/29/20 16:0409/28/20 08:31ug/L< 0.10.1---525.2Metolachlor51218-45-2 472786209/29/20 16:0409/28/20 08:31ug/L< 0.10.1---525.2Metribuzin21087-64-9 472786209/29/20 16:0409/28/20 08:31ug/L< 0.10.1---525.2Propachlor1918-16-7 472786209/29/20 16:0409/28/20 08:31ug/L< 0.070.074 *525.2Simazine122-34-9 472786309/22/20 21:5009/22/20 12:10ug/L< 6.06.0700 *547Glyphosate1071-83-6 Reg Limit Type: Symbol: MCL SMCL AL *^! EEA has demonstrated it can achieve these report limits in reagent water, but can not document them in all sample matrices. Page 2 of 3 Page 4 of 6Page 25 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Client Name:Report #:498426Green Analytical Laboratories Lab Definitions Continuing Calibration Check Standard (CCC) / Continuing Calibration Verification (CCV) / Initial Calibration Verification Standard (ICV) / Initial Performance Check (IPC) - is a standard containing one or more of the target analytes that is prepared from the same standards used to calibrate the instrument. This standard is used to verify the calibration curve at the beginning of each analytical sequence, and may also be analyzed throughout and at the end of the sequence. The concentration of continuing standards may be varied, when prescribed by the reference method, so that the range of the calibration curve is verified on a regular basis. CCL, CCM, and CCH are the CCC standards at low, mid, and high concentration levels, respectively. Internal Standards (IS) - are pure compounds with properties similar to the analytes of interest, which are added to field samples or extracts, calibration standards, and quality control standards at a known concentration. They are used to measure the relative responses of the analytes of interest and surrogates in the sample, calibration standard or quality control standard. Laboratory Duplicate (LD) - is a field sample aliquot taken from the same sample container in the laboratory and analyzed separately using identical procedures. Analysis of laboratory duplicates provides a measure of the precision of the laboratory procedures. Laboratory Fortified Blank (LFB) / Laboratory Control Sample (LCS) - is an aliquot of reagent water to which known concentrations of the analytes of interest are added. The LFB is analyzed exactly the same as the field samples. LFBs are used to determine whether the method is in control. FBL, FBM, and FBH are the LFB samples at low, mid, and high concentration levels, respectively. Laboratory Method Blank (LMB) / Laboratory Reagent Blank (LRB) - is a sample of reagent water included in the sample batch analyzed in the same way as the associated field samples. The LMB is used to determine if method analytes or other background contamination have been introduced during the preparation or analytical procedure. The LMB is analyzed exactly the same as the field samples. Laboratory Trip Blank (LTB) / Field Reagent Blank (FRB) - is a sample of laboratory reagent water placed in a sample container in the laboratory and treated as a field sample, including storage, preservation, and all analytical procedures. The FRB/LTB container follows the collection bottles to and from the collection site, but the FRB/LTB is not opened at any time during the trip. The FRB/LTB is primarily a travel blank used to verify that the samples were not contaminated during shipment. If applicable, the calculation of the matrix spike (MS) or matrix spike duplicate (MSD) percent recovery is as follows: (MS or MSD value - Sample value) * 100 / spike target / dilution factor = Recovery % Matrix Spike Duplicate Sample (MSD) / Laboratory Fortified Sample Matrix Duplicate (LFSMD) - is a sample aliquot taken from the same field sample source as the Matrix Spike Sample to which known quantities of the analytes of interest are added in the laboratory. The MSD is analyzed exactly the same as the field samples. Analysis of the MSD provides a measure of the precision of the laboratory procedures in a specific matrix. SDL, SDM, and SDH / LFSMDL, LFSMDM, and LFSMDH are the MSD or LFSMD at low, mid, and high concentration levels, respectively. Matrix Spike Sample (MS) / Laboratory Fortified Sample Matrix (LFSM) - is a sample aliquot taken from field sample source to which known quantities of the analytes of interest are added in the laboratory. The MS is analyzed exactly the same as the field samples. The purpose is to demonstrate recovery of the analytes from a sample matrix to determine if the specific matrix contributes bias to the analytical results. MSL, MSM, and MSH / LFSML, LFSMM, and LFSMH are the MS or LFSM at low, mid, and high concentration levels, respectively. Quality Control Standard (QCS) / Second Source Calibration Verification (SSCV) - is a solution containing known concentrations of the analytes of interest prepared from a source different from the source of the calibration standards. The solution is obtained from a second manufacturer or lot if the lot can be demonstrated by the manufacturer as prepared independently from other lots. The QCS sample is analyzed using the same procedures as field samples. The QCS is used as a check on the calibration standards used in the method on a routine basis. Reporting Limit Check (RLC) / Initial Calibration Check Standard (ICCS) - is a procedural standard that is analyzed each day to evaluate instrument performance at or below the minimum reporting limit (MRL). Surrogate Standard (SS) / Surrogate Analyte (SUR) - is a pure compound with properties similar to the analytes of interest, which is highly unlikely to be found in any field sample, that is added to the field samples, calibration standards, blanks and quality control standards before sample preparation. The SS is used to evaluate the efficiency of the sample preparation process. Page 3 of 3 Page 5 of 6Page 26 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Page 6 of 6Page 27 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 LABORATORY REPORT This report may not be reproduced, except in full, without written approval from EEA. If you have any questions concerning this report, please do not hesitate to call us at (800) 332-4345 or (574) 233-4777. Page 1 of 6Page 28 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Revision date:09/29/2020 STATE CERTIFICATION LIST State Certification State Certification Alabama 40700 Missouri 880 Alaska IN00035 Montana CERT0026 Arizona AZ0432 Nebraska NE-OS-05-04 Arkansas IN00035 Nevada IN00035 California 2920 New Hampshire* 2124 Colorado IN00035 New Jersey* IN598 Colorado Radiochemistry IN00035 New Mexico IN00035 Connecticut PH-0132 New York* 11398 Delaware IN035 North Carolina 18700 Florida(Primary AB)* E87775 North Dakota R-035 Georgia 929 Ohio 87775 Hawaii IN035 Oklahoma D9508 Idaho IN00035 Oregon* 4156 Illinois* 200001 Pennsylvania* 68-00466 Illinois Microbiology 17767 Puerto Rico IN00035 Illinois Radiochemistry IN00035 Rhode Island LAO00343 Indiana Chemistry C-71-01 South Carolina 95005 Indiana Microbiology M-76-07 South Dakota IN00035 Iowa 098 Tennessee TN02973 Kansas* E-10233 Texas* T104704187 Kentucky 90056 Texas/TCEQ TX207 Louisiana* LA014 Utah* IN00035 Maine IN00035 Vermont VT-8775 Maryland 209 Virginia* 460275 Massachusetts M-IN035 Washington C837 Michigan 9926 West Virginia 9927 C Minnesota* 018-999-338 Wisconsin 999766900 Mississippi IN035 Wyoming IN035 EPA IN00035 *NELAP/TNI Recognized Accreditation Bodies Page 2 of 6Page 29 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Laboratory Report Client: Attn: Report: Priority: Status: PW S ID: Green Analytical Laboratories Debbie Zufelt 75 Suttle Street 498427 Not Supplied Standard W ritten Final Durango, CO 81303 110 South Hill Street South Bend, IN 46617 Tel: (574) 233-4777 Fax: (574) 233-8207 1 800 332 4345 *NR = The chlorine demand was not performed for this analytical sample, at the request of the client. EEA ID # Client ID Method Collected Date / Time Collected By: Received Date / Time 4727864 Levitt Wells 7500-Ra B 09/15/20 13:34 Client 09/17/20 10:00 4727864 Levitt Wells 7500-Ra D 09/15/20 13:34 Client 09/17/20 10:00 4727865 Levitt Wells 200.8 09/15/20 13:34 Client 09/17/20 10:00 4727865 Levitt Wells 7110 B 09/15/20 13:34 Client 09/17/20 10:00 Sample Information Report Summary Detailed quantitative results are presented on the following pages. The results presented relate only to the samples provided for analysis. W e appreciate the opportunity to provide you with this analysis . If you have any questions concerning this report, please do not hesitate to call Shea Greiner at (574) 233-4777. Note: This report may not be reproduced, except in full, without written approval from EEA. Client Name: Report #: Green Analytical Laboratories 498427 Authorized Signature Title Date 10/07/2020 Page 1 of 3 Page 3 of 6Page 30 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Client Name:Report #:498427Green Analytical Laboratories Sampling Point:PW S ID:Levitt W ells Not Supplied Radionuclides Analyte ID # Analyte Method Reg Limit MDA 95** Result Units Preparation Date Analyzed EEA ID # MRL 09/30/20 14:2109/30/20 13:00pCi/L7.56 – 0.600.6700.67020.1 *200.8Uranium7440-61-1 4727865 10/01/20 14:4009/23/20 16:35pCi/L12.7 – 4.03.02.1315 *7110 BGross Alpha---4727865 10/01/20 14:4009/23/20 16:35pCi/L6.9 – 3.24.02.9---7110 BGross Beta---4727865 09/29/20 11:3809/23/20 11:56pCi/L0.92 – 0.411.00.23---7500-Ra BRadium-22613982-63-3 4727864 10/02/20 18:5509/23/20 11:56pCi/L0.03 – 0.431.000.46---7500-Ra DRadium-22815262-20-1 4727864 10/02/20 18:5509/23/20 11:56pCi/L0.95 – 0.591.00.465 *calc.Combined Radium---4727864 ** Minimum Detectable Activity (MDA95) shall be that concentration which can be counted with a precision of plus or minus 100% at the 95 % confidence level. Reg Limit Type: Symbol: MCL SMCL AL *^! EEA has demonstrated it can achieve these report limits in reagent water, but can not document them in all sample matrices. Page 2 of 3 Page 4 of 6Page 31 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Client Name:Report #:498427Green Analytical Laboratories Lab Definitions Continuing Calibration Check Standard (CCC) / Continuing Calibration Verification (CCV) / Initial Calibration Verification Standard (ICV) / Initial Performance Check (IPC) - is a standard containing one or more of the target analytes that is prepared from the same standards used to calibrate the instrument. This standard is used to verify the calibration curve at the beginning of each analytical sequence, and may also be analyzed throughout and at the end of the sequence. The concentration of continuing standards may be varied, when prescribed by the reference method, so that the range of the calibration curve is verified on a regular basis. CCL, CCM, and CCH are the CCC standards at low, mid, and high concentration levels, respectively. Internal Standards (IS) - are pure compounds with properties similar to the analytes of interest, which are added to field samples or extracts, calibration standards, and quality control standards at a known concentration. They are used to measure the relative responses of the analytes of interest and surrogates in the sample, calibration standard or quality control standard. Laboratory Duplicate (LD) - is a field sample aliquot taken from the same sample container in the laboratory and analyzed separately using identical procedures. Analysis of laboratory duplicates provides a measure of the precision of the laboratory procedures. Laboratory Fortified Blank (LFB) / Laboratory Control Sample (LCS) - is an aliquot of reagent water to which known concentrations of the analytes of interest are added. The LFB is analyzed exactly the same as the field samples. LFBs are used to determine whether the method is in control. FBL, FBM, and FBH are the LFB samples at low, mid, and high concentration levels, respectively. Laboratory Method Blank (LMB) / Laboratory Reagent Blank (LRB) - is a sample of reagent water included in the sample batch analyzed in the same way as the associated field samples. The LMB is used to determine if method analytes or other background contamination have been introduced during the preparation or analytical procedure. The LMB is analyzed exactly the same as the field samples. Laboratory Trip Blank (LTB) / Field Reagent Blank (FRB) - is a sample of laboratory reagent water placed in a sample container in the laboratory and treated as a field sample, including storage, preservation, and all analytical procedures. The FRB/LTB container follows the collection bottles to and from the collection site, but the FRB/LTB is not opened at any time during the trip. The FRB/LTB is primarily a travel blank used to verify that the samples were not contaminated during shipment. If applicable, the calculation of the matrix spike (MS) or matrix spike duplicate (MSD) percent recovery is as follows: (MS or MSD value - Sample value) * 100 / spike target / dilution factor = Recovery % Matrix Spike Duplicate Sample (MSD) / Laboratory Fortified Sample Matrix Duplicate (LFSMD) - is a sample aliquot taken from the same field sample source as the Matrix Spike Sample to which known quantities of the analytes of interest are added in the laboratory. The MSD is analyzed exactly the same as the field samples. Analysis of the MSD provides a measure of the precision of the laboratory procedures in a specific matrix. SDL, SDM, and SDH / LFSMDL, LFSMDM, and LFSMDH are the MSD or LFSMD at low, mid, and high concentration levels, respectively. Matrix Spike Sample (MS) / Laboratory Fortified Sample Matrix (LFSM) - is a sample aliquot taken from field sample source to which known quantities of the analytes of interest are added in the laboratory. The MS is analyzed exactly the same as the field samples. The purpose is to demonstrate recovery of the analytes from a sample matrix to determine if the specific matrix contributes bias to the analytical results. MSL, MSM, and MSH / LFSML, LFSMM, and LFSMH are the MS or LFSM at low, mid, and high concentration levels, respectively. Quality Control Standard (QCS) / Second Source Calibration Verification (SSCV) - is a solution containing known concentrations of the analytes of interest prepared from a source different from the source of the calibration standards. The solution is obtained from a second manufacturer or lot if the lot can be demonstrated by the manufacturer as prepared independently from other lots. The QCS sample is analyzed using the same procedures as field samples. The QCS is used as a check on the calibration standards used in the method on a routine basis. Reporting Limit Check (RLC) / Initial Calibration Check Standard (ICCS) - is a procedural standard that is analyzed each day to evaluate instrument performance at or below the minimum reporting limit (MRL). Surrogate Standard (SS) / Surrogate Analyte (SUR) - is a pure compound with properties similar to the analytes of interest, which is highly unlikely to be found in any field sample, that is added to the field samples, calibration standards, blanks and quality control standards before sample preparation. The SS is used to evaluate the efficiency of the sample preparation process. Page 3 of 3 Page 5 of 6Page 32 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Page 6 of 6Page 33 of 33 2009173 GAL_WSUB FINAL 10 14 20 1529 10/14/20 15:29:37 Appendix O Fire Hydrant Memo and Hydrant Spacing Exhibit 592 Highway 133 • Carbondale, CO 81623 • 970.340.4130 • www.rfeng.biz Page 1 of 2 Ascendigo Adventure Camp - Fire Hydrant Residual Pressures To: Bill Gavette Deputy Chief Carbondale & Rural Fire Protection District 300 Meadowood Drive, Carbondale, CO 81623 Carbondale, CO 81623 970-963-2491 From: Maggie McHugh, PE Project Engineer 592 Highway 133 Carbondale CO, 81623 Ph: 970-340-4130 cc: Adam Racette, PE Date: Monday November 23rd, 2020 Re: Fire Hydrants 6 and 7 Residual Pressures Ascendigo Camp Fire Protection The Whitecloud and Harmony Heights parcel has an existing 8” ductile iron water line, which is fed by the Storage tank located in the northeast corner of the parcel. Three existing fire hydrants are located on the Whitecloud Ridge portion of the parcel, in the northwest area along Whitecloud Road (see Exhibit 1). Roaring Fork Engineering worked with Bill Gavette to determine new fire hydrant locations to serve all proposed structures. Two of the proposed fire hydrants (Hydrants 6 and 7) are located in the Harmony Heights portion of the parcel, near the proposed Activity Barn and Base Camp (See Exhibit 1). Due to the elevation of the existing tank on site, pressures at Hydrants 6 and 7 are below the target 20 psi minimum residual pressure. To work around the low available pressures at Hydrants 6 and 7, RFE and Bill Gavette discussed that the District could use their pumper trucks to pump water from these two hydrants. To pump from the hydrants, there should be positive pressure available at each hydrant. RFE calculated static head and headloss from the storage tank to each hydrant to determine the residual pressures available at Hydrants 6 and 7. Page 2 of 2 For the headloss calculations, it was assumed that the hydrant tee, gate valve, and lateral are all 8”, with the pipe size reduction to 6” not taking place until directly upstream of hydrant flange connection. Assumed flow out of each hydrant is 1000 gpm. Using these assumptions, headloss and residual pressures were calculated for two tank levels: 1. Full tank (water level directly below overflow) = 15 ft. 2. Minimum fire flow level (water height after 120,000 gallons is used) = 6.31 ft. Table 1 summarizes estimated residual pressures from each described scenario. Table 1. Hydrant Residual Pressures. Hydrant 6 Residual Pressure (psi) Hydrant 7 Residual Pressure (psi) Scenario 1A 17.1 4.75 Scenario 1B 13.3 0.92 KITCHENFPOf 11 HYDRANT LAYOUTROARING FORK ENGINEERING 592 HIGHWAY 133 CARBONDALE COLORADO, 81623 PH: (970)340-4130 F:(866)876-5873CHECKED BY:#DESCRIPTION DATE DRAWN BYCONCEPTUAL DRAWN BY:JOB #:Of TOTAL PAGESASCENDIGO RANCH GARFIELD COUNTY, CO 2020-36-MKMAR1 ---##.##.####--- 2 Appendix P Wastewater Demand Summary Table Project Number: 2020-36 Date: 12-15-2020 By: AMR Line Parameter Total Number Description Flow Per Unit (gpd)Data Citation Water Demand (gpd)Notes BASECAMP - HARMONY HEIGHTS Campers, Staff, and Visitors Dining 100 person(s)15.9 Table 3-5, M&E 2014 1590 Dining hall per meal served, 100 people max (5.3 gallons per meal) 1590 Restroom Usage (visitors)38 person(s)3 Table 3-5, M&E 2014 113 Drop of/Pick up Days (50 - 75 people), public lavatory (3 gal per user), Assume half of visitors use the restroom Permanent Staff 10 person(s)10 Table 3-3, M&E 2014 100 10 permanent staff (10 gpd per employee) 213 1803 OWTS Design Flow (System A)2000 GYM ACTIVITY BARN - HARMONY HEIGHTS Campers and Staff 50 person(s) Restroom Usage (visitors)50 person(s)3 Table 3-5, M&E 2014 150 Assume all visitors use the restroom once (conservative) Shower Usage (visitors)25 person(s)12.5 Table 3-5, M&E 2014 313 Assume half of visitors use the shower once (conservative) 463 OWTS Design Flow (System B)750 CAMPER LODGING - HARMONY HEIGHTS Campers 24 person(s)38 Table 3-5, M&E 2014 912 Camp with central toilet and bath facilities (38 gallons per person) On-Duty Staff 2 person(s)38 Table 3-5, M&E 2014 76 Camp with central toilet and bath facilities (38 gallons per person) 988 OWTS Design Flow (System C)1250 STAFF LODGING - LOT 4 Staff 49 person(s)38 Table 3-5, M&E 2014 1862 Dormitory/Bunkhouse (38 gallons per day per person) IS this 48 or 49 1862 OWTS Design Flow (System D)2000 GUEST CABIN - LOT 3 Bedrooms 3 room(s)Assume 3 bedrooms People Per Bedroom 2 person(s)Table 3-5, M&E 2014 Total Number of People 6 person(s)75 County Regulations 450 450 OWTS Design Flow (System E)500 EQUESTRIAN BUILDING - WHITECLOUD Restroom Usage (visitors)10 person(s)3 Table 3-5, M&E 2014 30 Assume half of the visitors use the restroom once (conservative) Will there be a bathroom located here? 30 OWTS Design Flow (System F)See Caretaker Housing MAINTENANCE BARN - LOT 9 Restroom Usage (employees)2 person(s)3 Table 3-5, M&E 2014 6 Assuming two employees use this bathroom twice a day Sink (no oils, grease, etc.)2 use(s)3 Table 3-5, M&E 2015 6 Assumes each employee uses the tub once a day Will there be a bathroom and sink located here? 12 OWTS Design Flow (System F)See Caretaker Housing CARETAKER HOUSING - LOT 10 Unit 1 Bedrooms 3 room(s) People Per Room 2 person(s) Total number of People 6 person(s)75 GC OWTS Regulations 450 450 Unit 2 Bedrooms 2 room(s) People Per Room 2 person(s) Total number of People 4 person(s)75 GC OWTS Regulations 300 300 750 Total Wastewater Flowrates For System F 792 OWTS Design Flow (System F)1000 ASCENDIGO ADVENTURE CAMP WASTEWATER FLOWRATES ESTIMATES Total Flowrate For Dining Hall Total Flowrate for Administration Building Total Wastewater Flowrates For Gym Activity Barn Total Wastewater Flowrates For Camper Lodging Total Wastewater Flowrates For Caretaker Housing Units Includes flows from equestrian building, maintenance barn, and caretaker units 1 and 2 Total Wastewater Flowrates For Basecamp Total Wastewater Flowrates For Unit 1 Total Wastewater Flowrates For Equestrian Building Total Wastewater Flowrates For Guest Cabin Total Wastewater Flowrates For Staff Lodging Total Wastewater Flowrates For Maintenance Barn Total Wastewater Flowrates For Unit 2 Appendix Q Utility Will Serve Letters 3799 HIGHWAY 82∙P.O. BOX 2150 GLENWOOD SPRINGS, COLORADO 81602 (970) 945-5491∙FAX (970) 945-4081 A Touchstone Energy Cooperative November 18, 2020 Mr. Dan Richardson Ascendigo Autism Services c/o: MAGGIE McHUGH, PE Design Engineer 592 Highway 133 Carbondale, CO 81623 RE: Ascendigo Ranch Dear Mr. Richardson, The above mentioned development is within the certified service area of Holy Cross Energy. Holy Cross Energy has adequate single-phase power supply to provide electric power to the development, if the desire for three phase power is needed Holy cross can accommodate the needs at a cost to be determined after a cost estimate has been made. Subject to tariffs, rules and regulations on file. Any power line enlargements, relocations, and new extensions necessary to deliver adequate power to and within the development will be undertaken by Holy Cross Energy upon completion of appropriate contractual agreements and subject to necessary governmental approvals. Additionally, due to current economic conditions, Holy Cross Energy is not stocking the quantity of construction materials as in past years. If your project is slated for construction this year, please advise us as soon as possible. You will need to enter into agreements with Holy Cross Energy, and pay for the project, sufficiently in advance of construction to avoid possible delays while materials are procured. The currently estimated lead time for procurement of materials is around 12 weeks. Please advise when you wish to proceed with the development of the electric system for this project. Sincerely, HOLY CROSS ENERGY Kenton Berner, Engineering Department kberner@holycross.com (970) 947-5497 KB:MM Ascendigo Ranch – 66-67 - W/O TBD Improving life with energy www.blackhillsenergy.com Black Hills Energy 0096 C.R. 160 Glenwood Springs,co.81601 Nov 23, 2020 Re: Ascendigo Adventure Camp, Carbondale, Colorado To: Dan Richardson Chief Operating Officer Ascendigo Autism Services, Inc. 818 Industry Place Carbondale, CO 81623 This letter will confirm that Black Hills Energy will provide Natural Gas Distribution service to the development listed above. Black Hills Energy will install a distribution system capable of serving the demand of the address that lies within the BHE certificated service territory. This service will be subject to Black Hills Energy tariffs filed with the Colorado Public Utilities Commission and the Black Hills Energy Gas Network Main Extension Policy. If you have any questions please feel free to contact me. Sincerely, Jason Cox Utility Construction Planner Black Hills Energy Jason.cox@blackhillscorp.com Cell: 970-309-2432 Jason Cox Utility Construction Planner Colorado Gas P: 605.721.2511 Jason.cox@blackhillscorp.com 11/23/2020 Dan Richardson Chief Operating Officer Ascendigo Autism Services, Inc. 818 Industry Place Carb ondale, CO 81623 RE: Ascendigo Autism Services To whom it may concern: Your request for facilities to the Ascendigo Autism Services is within CenturyLink’s serving area and will be provided in accordance with all the rates and tariffs set forth by the Colorado Public Utilities Commission. Connections to CenturyLink facilities are contingent upon the customer meeting all the requirements of the Utilities tariffs that are in effect for each requested utility service at the time the application for service is made by the customer and formally accepted by CenturyLink. Connection requirements may include provisions for necessary line extensions and/or other system improvements, and payment of all applicable system development charges, recovery agreement charges and other fees or charges applicable to the requested service. Although CenturyLink diligently seeks to expand its facilities as necessary to meet anticipated growth, CenturyLink services are provided to eligible customers at the time of connection to the facilities on a “first come, first served” basis after acceptance of the customer’s application as described above. In certain instances, our facilities and capacities may be limited. Accordingly, no specific allocations or amounts of CenturyLink facilities or supplies are reserved for service to the subject property, and no commitments are made as to the availability of CenturyLink service at future times. Sincerely, Jason Sharpe Senior Field Engineer 970-328-8290 Comcast Business 84 Inverness Circle East Englewood, CO 80112 [Comcast rev. June 2018] Roaring Fork Engineering, RE: Will Serve request for availability of Comcast communication services Ascendigo Ranch (Proposed) Harmony Road at Sunset Lane Garfield County, Colorado Date of Issue: January 12th, 2021 Attention Roaring Fork Engineering, In response to your request for service, we have determined that based on our initial investigation, Comcast Cable Communication Management, LLC has the ability to construct and install certain wires, cables and other equipment over, under, across and along the property referenced above. A preliminary plan, if available, may be provided with this “Will Serve,” letter. Notwithstanding the determination that Comcast MAY provide services at the Property, this letter does NOT represent any binding agreement for service. Additionally, this letter is non-transferrable and expires one hundred and eighty (180) days from issue date. If you have any questions or need more information, feel free to contact us. By: _____________________ Name:_____________________ Title: _____________________ Business Development Manager Appendix R Intersection Clear Vision Area Exhibit Ascendigo_Intersection Clear AreaEngineer: AMRDrawn By: VJTSheet Number:DateCommentsInit.Rev.Computer File InformationPrint Date: 3/3/21Drawing File Name:Project No.: 2020-36Sheet RevisionsROARING FORK ENGINEERING592 HIGHWAY 133CARBONDALE COLORADO, 81623PH: (970)340-4130F:(866)876-5873EX1Of:EX2ASCENDIGO ADVENTURE CAMPCARBONDALE, CO 816231INTERSECTION CLEAR VISION AREA EXHIBIT03.03.2021VJT Ascendigo_Intersection Clear AreaEngineer: AMRDrawn By: VJTSheet Number:DateCommentsInit.Rev.Computer File InformationPrint Date: 3/3/21Drawing File Name:Project No.: 2020-36Sheet RevisionsROARING FORK ENGINEERING592 HIGHWAY 133CARBONDALE COLORADO, 81623PH: (970)340-4130F:(866)876-5873EX2Of:EX2ASCENDIGO ADVENTURE CAMPCARBONDALE, CO 816231INTERSECTION CLEAR VISION AREA EXHIBIT03.03.2021VJT Appendix S   Road Impact Fees    Proposed Building Development Type SFT of Building Fee: East Benefit Area* FeeBase CampInsitutional 6,800 $1,505 $10,234Activity BarnInsitutional 14,000 $1,505 $21,070Camper LodgeInsitutional 8,500 $1,505 $12,793Staff LodgeInsitutional 8,500 $1,505 $12,793Guest CabinResidential 1,700 $1,988 $1,988Caretaker DwellingResidential 3,500 $2,703 $2,703Caretaker ADUResidential 2,500 $2,703 $2,703Total Fee $64,283* Residential fee is per dwelling by square feet of finished floor area and non‐residential fee is per 1,000 square feet of floor areaROAD IMPACT FEES