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HomeMy WebLinkAbout1.0 Application• HYDRAU-TECH, INC. ENGINEERING & SOFTWARE March 1, 2019 Glenn Hartmann Senior Planner, CFM Community Development Department, Garfield County 108 8th Street, Suite 401 Glenwood Springs, CO 81601 Subject: Land Use Change Permit Application CDOT Project 21200 - SH 82 over Cattle Creek (CDOT Structure G -07-B) Dear Glenn: 363 W. Drake Road, Suite 3B Fort Collins, Colorado 80526 Phone: (970) 223-3984 Fax: (970) 223-8484 On behalf of the Colorado Department of Transportation (CDOT), Region 3, this is a letter documenting that the flood scour repairs at State Highway (SH) 82 (included as part of CDOT Project 21200) does not cause an adverse impact to the Cattle Creek regulated Federal Emergency Management Association (FEMA) Zone AE floodplain. All items listed in the submittal requirements for development in the 100 -year floodplain in Garfield County are addressed in this letter. The Land Use Change Permit Application Form is included as Attachment A and the Agreement to Pay Form is provided in Attachment B. Review of Floodplain Overlay Regulations, provided in Garfield County's Land Use Development Code (LUDC), Article 3, pertaining to development within the 100 -year floodplain (3-301) are addressed in Attachment C. The Review Criteria provided in Garfield County's LUDC, Article 4, for development in the 100 -year floodplain (4-109) was considered and responses are provided in Attachment D. Applicant and Design Engineer Information Applicant: CDOT, Region 3 606 S. 9th St. Grand Junction, CO 81501 (970) 683-6354 Contact: Stuart Gardner, PE Engineer: Hydrau-Tech, Inc. 363 W. Drake Rd., Suite 3B Fort Collins, CO 80526 (970) 223-3984 Contact: Albert Molinas, Ph.D, PE Project Description CDOT Project 21200 is a roadway surface treatment project with associated curb ramp and guardrail upgrades and chip seal treatment. This project is being constructed between Mile Marker 1.5 and 11.6 along SH 82 near Glenwood Springs, Colorado. Chip seal treatment is being conducted in New Castle, Colorado. Alongside these roadway repairs, CDOT is implementing scour mitigation countermeasures at CDOT Structure G -07-B on SH 82. CDOT Structure G -07-B experiences high flow velocities during the design discharge event and may experience significant scour. Therefore, countermeasures were designed to protect the bridge from scour damage. At Structure G -07-B, concrete aprons with toewalls are designed to be constructed at both the inlet and outlet. Riprap protection at Structure G -07-B was designed to be placed at the downstream outlet. Site Plan and construction plan drawings, including details of proposed improvements and significant features are provided in Attachment E. The scour portion of the project is located in Garfield County at Mile Marker 7.909 along SH 82. Because Structure G -07-B is in a FEMA Zone AE regulatory floodplain (see Attachment F for the effective FIRM), base flood elevations have been determined and compliance with NFIP HYDRAU-TECH, INC. ENGINEERING & SOFTWARE 363 W. Drake Road, Suite 3B Fort Collins, Colorado 80526 Phone: (970) 223-3984 Fax: (970) 223-8484 s regulations is required at this site. The documentation, prepared for Garfield County, is to demonstrate that the proposed scour countermeasures will not adversely alter existing topography and that as a result will not change hydraulic conditions and water surface elevations (no -rise) prevailing at the project site. Vicinity Map A vicinity map, township and range map, and section map with property information are provided in Figures 1 through 3, respectively. List of Owners Table 1 provides a list of property owners, collected from Garfield County's website, within 200 feet of the scour mitigation work. Attachment G is a list of the property owners, provided by CDOT, that was used for acquiring temporary easement areas at the project site. These property owners were contacted by CDOT during the easement acquisition process. PIN 239307300032 239307300033 239501400161 239307400357 239318100358 239328300024 Account R082857 R082858 R082859 R111932 R111933 R112102 Table 1. Adjacent Property Owners Owner Carbondale Investments, LLC Carbondale Investments, LLC Garfield County Commercial Investments LLC Aspen Equity Group LLC CCC -B LLLP Roaring Fork Transportation Authority Physical Address Glenwood Springs 81601 Glenwood Springs 81601 Glenwood Springs 81601 82113 County Rd Carbondale, CO 81623 62113 County Rd Cabondale, CO 81623 Railroad R.O.W. Glenwood Springs 81601 Mailing Address PO Box 17330 Little Rock, AR 72222 PO Box 17330 Little Rock, AR 72222 PO Box 17330 Little Rock, AR 72222 PO Box 1439 Carbondale, CO 81623 0132 Park Avenue Basalt, CO 81621 1340 Main Street Carbondale, CO 81623 HYDRAU-TECH, INC. ENGINEERING & SOFTWARE Figure 1. Vicinity Map (Not to Scale) 363 W. Drake Road, Suite 3B Fort Collins, Colorado 80526 Phone: (970) 223-3984 Fax: (970) 223-8484 HYDRAU-TECH, INC. ENGINEERING & SOFTWARE Figure 2. Township/Range Map (Not to Scale) 363 W. Drake Road, Suite 3B Fort Collins, Colorado 80526 Phone: (970) 223-3984 Fax: (970) 223-8484 1-65 nosy,/ R87 W Area of Interest 1 if: Mhillittr.:*°11110- IiIIhi!1fiI INFElsi =[�elu,rr whimmudgpitirAffliwg ri IT )111;Iv!I:Iv AA lag! aril (\,-.. HYDRAU-TECH, INC. ENGINEERING & SOFTWARE Fgure 3. Section and Property Map (Not to Scale) 363 W. Drake Road, Suite 3B Fort Collins, Colorado 80526 Phone: (970) 223-3984 Fax: (970) 223-8484 2393/06955 239307469072 239307406620 23%12123003 Roaring Fork River 239307300037 23230 740001 6 391307460015 239501400161 239300360013 239308300007 239 308 300009 9307400012 12 239512401005 239512401021 23%12401006 23 930 7460113 239308400012 239300300094 239361309606 23%12401007 Cattle Creek 239307300033 23%12401000 239317200%3 235517401022 23%12400005 y.Y•Si.C1.«13 23%12401009 Teller 23951240t014 r I n 239 512 401 011 239513101014 Structure G -07-B 239512402001 18 23931 7200094 17 239300400610 2393171003% 236310100359 239317200311 239317200236 '239317260246 239310300366 Cattle Creek 239317100015 239 387260093 3393175000692 • HYDRAU-TECH, INC. ENGINEERING & SOFTWARE 363 W. Drake Road, Suite 3B Fort Collins, Colorado 80526 Phone: (970) 223-3984 Fax: (970) 223-8484 s Construction Practices To construct the proposed scour countermeasures at Structure G -07-B, access roads and staging areas will be required. Construction access to the upstream portion of the work is proposed for the north side of G -07-B directly off SH 82 Frontage Road, with staging (0.23 acres) proposed on both sides of Cattle Creek. Construction access to the downstream portion of the work is proposed for the north side of G -07-B directly off SH 82 south bound, with staging (0.25 acres) proposed on both sides of Cattle Creek. Additional details of construction access and staging are provided in the Stormwater Management Plan (SWMP) Site Map (Sheet E07 of E08) in Attachment H. Once constructed, the proposed scour countermeasures for G -07-B will be fully within CDOT right-of-way (ROW). However, during construction, excavations will be required to install the concrete toewalls and downstream riprap apron. Due to the limited ROW that CDOT has at this site, it was necessary to acquire temporary easements from the adjacent land owners. CDOT ROW has acquired a total of four temporary easements at this site (TE 8-1 1). Through CDOT's extensive ROW process, adjacent property owners listed in Appendix G have been notified of the work that is being performed. Section 7-203(B) Protection of Waterbodies Compliance According to Garfield County LUDC, Article 7, Section 7-203(B), irrigation and water diversion facilities, flood control structures, culverts, bridges, pipelines, and other reasonable and necessary structures requiring some disturbance within the 35 foot setback may be permitted. The proposed construction activities are within this 35 foot setback. Environmental and Biological Impacts Environmental impacts due to construction operations were investigated in coordination with CDOT Region 3 Environmental Staff. Water quality from sediment or erosion potential has been addressed using multiple best management practices, including but not limited to, erosion control logs and a downstream rock check dam for sediment capture. Noxious weeds found by CDOT Environmental Staff will be treated with herbicide treatment (0.4 acres). Areas of disturbance due to staging and construction activities will receive native seeding and soil conditioning for permanent stabilization. Existing wetlands were identified by CDOT Environmental Staff and will be treated or protected accordingly. Areas of temporary wetland impacts (0.015 acres) will be protected using soil retention blankets and weed free straw. Areas of permanent impacts (0.006 acres) will be offset by providing wetland seeding and soil conditioning to areas (0.03 acres) to reestablish equivalent or greater wetland zones. Additional information on environmental impact mitigation, and equipment required for the work, can be found in Attachment H in the SWMP Narrative (Sheets E01 through E06). Details of permanent stabilization and wetland protection efforts are provided in Attachment H on the SWMP Site Map (Sheet E07of E08) and Temporary Wetland Protection Detail (Sheet E08 of E08). Biological impacts and mitigation were investigated in coordination with CDOT Environmental Staff. During scour countermeasure construction, the contractor is to prevent increases in sediment being deposited into the stream channel from overbank areas and from in -stream work that would impact water quality in downstream habitats, especially in the Roaring Fork River. In -stream work will be conducted from August 1St - September 30th to minimize turbidity downstream for spawning fish in the Roaring Fork River. The contractor is to minimize and/or eliminate work within wetland areas, use mats to decrease impacts to wetlands if practicable. The contractor is to keep all staging areas to previously disturbed sites and minimize impacts to HYDRAU-TECH, INC. ENGINEERING & SOFTWARE 363 W. Drake Road, Suite 3B Fort Collins, Colorado 80526 Phone: (970) 223-3984 Fax: (970) 223-8484 wetland and riparian vegetation. Vegetation removal will be conducted after August 31st and before April 1st, to prevent impacts to migratory birds. Floodplain Analysis Peak Flows FEMA obtained peak discharges for Cattle Creek from a detailed hydrologic analysis performed by the US Army Corps of Engineers. These discharges are provided in the U.S. Army Corps of Engineers HEC -2 hydraulic model. Per the HEC -2 model, the 100 -year peak discharge at the southern study limit of Cattle Creek is 2,850 cfs. FEMA Modeling As previously stated, the effective FEMA floodplain for Cattle Creek in the vicinity of Structure G -07-B is a Zone AE, indicating that a detailed hydraulic analysis was completed, and base flood elevations were determined. The effective model for Cattle Creek was prepared using the U.S. Army Corps of Engineers HEC -2 hydraulic model and is available in hardcopy format from the FEMA archives. However, utilizing the effective HEC -2 model was not deemed necessary for hydraulic analysis of this project and is therefore not included in this permit application. No Floodplain Impacts The proposed construction at Structure G -07-B is all at or below existing grade and therefore there is no filling within the channel. The native material is proposed to restore Cattle Creek channel elevations to existing conditions. Attachment I presents multiple cross sections along the Cattle Creek channel upstream and downstream of Structure G -07-B. These cross sections are placed along the proposed scour countermeasures to show minimal extent of channel adjustments due to grading and the associated cut and fill areas and volumes. A table corresponding to each cross section provides the magnitude of cut, fill, and net area and volume changes. In general, 1. As shown in Section A (Sheet 03 of 06) there will be no change in channel geometry upstream of the bridge (backfill native material to match existing ground). 2. As shown in Sections B through F (Sheets 04 through 06), only a total of 7 cubic yards of material is removed from the existing channel downstream from the bridge along a 20 - foot reach. The average change in flow area is approximately 6 square feet. 3. The changes in the downstream channel configuration are in general along the banks at higher elevations (lower conveyance areas), and are to create a smooth finished surface. 4. From the FIRM, the 100 -year floodplain width is approximately 400 feet at the downstream of the bridge and the depth of flow is approximately 10 feet. The volume of material removed is negligible to the channel volume containing the 100 -year flows in the same reach. Therefore no change in hydraulic conditions is anticipated. A ' 363 W. Drake Road, Suite 3B Fort Collins, Colorado 80526 Phone: (970) 223-3984 Fax: (970) 223-8484 Engineering "No -Rise" Certification This is to certify that 1 am a duly qualified engineer licensed to practice in the state of Colorado. It is to further certify that the attached data supports the fact that the proposed SH 82 Scour Repair project will not cause an increase in the Base Flood Elevations (100 -year flood), floodplain elevations, and floodplain widths on Cattle Creek. Therefore, this project does not impact the Cattle Creek floodplain. SIGNED DATE 3/5102. C, Representing: Hydrau-Tech Inc. Phone: (970) 223-3984 Address: 363 W. Drake Rd. Suite, 3B Fort Collins, CO 80526 On behalf of CDOT, Region 3, we are requesting that a floodplain development permit be issued as we have demonstrated that construction of the proposed scour countermeasures will negligibly alter topography and therefore will not impact the floodplain for Cattle Creek. Thank you for reviewing this permit application. If you have any questions or need additional information, please contact me at 970-223-3984 or molinas@hydrau-tech.com. Best regards, Hydrau-Tech, Inc. Albert Molinas, Ph.D., PE Attachments: - Land Use Change Permit Application Form B - Payment Agreement Form C Review of Section 3-301 - Floodplain Overlay Regulations D Responses to Section 4-109 Review Criteria E - Site Plan and Construction Plan Drawings F Effective FIRM G Property Owner Contact Information H Stormwater Management Plan 1- Cut/Fill Cross Sections • HYDRAU-TECH, INC. ENGINEERING & SOFTWARE ATTACHMENT A 363 W. Drake Road, Suite 3B Fort Collins, Colorado 80526 Phone: (970) 223-3984 Fax: (970) 223-8484 1 INVOLVED PARTIE Owner/Applicant Name: CDOT Region 3, Stuart GardnerPhone: ( 970 ) 683-6354 Mailing Address: 606 S. 9th St. City: Grand Junction State: CO Zip Code: 81501 E-mail: stuart.gardner@state.co.us Representative (Authorization Required) Name: Albert Molinas Phone: ( 970 ) 223-3984 Mailing Address: molinas@hydrau-tech.com City: Fort CollinsState: CO Zip Code: 80526 E-mail: molinas@hydrau-tech.com leGarfield County Community Development Department 108 8th Street, Suite 401 Glenwood Springs, CO 81601 (970) 945-8212 www.garfield-county.com LAND USE CHANGE PERMIT APPLICATION FORM TYPE OF APPLICATION • Administrative Review = Development in 100 -Year Floodplain • Limited Impact Review • Development in 100 -Year Floodplain Variance • Major Impact Review • Code Text Amendment • Amendments to an Approved LUCP ❑ LIR MIR ❑ SUP • Rezoning ❑ Zone District ❑ PUD ❑ PUD Amendment • Minor Temporary Housing Facility • Administrative Interpretation • Vacation of a County Road/Public ROW • Appeal of Administrative Interpretation • Location and Extent Review • Areas and Activities of State Interest • Comprehensive Plan Amendment' • Accommodation Pursuant to Fair Housing Act • Pipeline Development • Variance • Time Extension (also check type of original application) ROJECT NAME AND LOCATION Project Name: Construction Project No. 21200 State Highway 82 over Cattle Creek Scour Repairs Assessor's Parcel Number: - Physical/Street Address: State Highway 82 over Cattle Creek, near Carbondale, CO Legal Description: CDOT owned Structure G -07-B on State Highway 82 over Cattle Creek Zone District: 0.49 (disturbance) Property Size (acres): PROJECT DESCRIPTION Existing Use: State Highway 82 over Cattle Creek. CDOT Structure G -07-B. Proposed Use (From Use Table 3-403): State Highway 82 over Cattle Creek. CDOT Structure G -07-B Description of Project: This project is to construct scour mitigation at the entrance and exit sections of CDOT Structure G -07-B. Scour mitigation measures consist of an upstream and downstream concrete apron and toe wall with a downstream riprap apron. Existing site material (native) will be used to restore the main channel area back to existing ground. REQUEST FOR WAIVERS Submission Requirements 0 The Applicant requesting a Waiver of Submission Requirements per Section 4-202. List: Section: Section: Section: Section: Waiver of Standards ❑ The Applicant is requesting a Waiver of Standards per Section 4-118. List: Section: Section: Section: Section: I have read the statements above and have provided the required attached information which is correct ap4ccurato the best of my knowledge. Signature of Property Owner 3-1-r9 Date OFFICIAL USE ONLY File Number: Fee Paid: $ • HYDRAU-TECH, INC. ENGINEERING & SOFTWARE ATTACHMENT B 363 W. Drake Road, Suite 3B Fort Collins, Colorado 80526 Phone: (970) 223-3984 Fax: (970) 223-8484 SECTION 2-03. PAYMENT AGREEMENT FORM Payment Agreement Form GARFIELD COUNTY (hereinafter COUNTY) and Colorado Department of Transportation Region 3 Property Owner (hereinafter OWNER) agree as follows: 1. OWNER has submitted to COUNTY an application for Scour countermeasure implementation at Structure G -07-B, Land Use Development Application (hereinafter, THE PROJECT). 2. OWNER understands and agrees that Garfield County Resolution No. 98-09, as amended, establishes a fee schedule for each type of subdivision or land use review applications, and the guidelines for the administration of the fee structure. 3. OWNER and COUNTY agree that because of the size, nature or scope of the proposed project, it is not possible at this time to ascertain the full extent of the costs involved in processing the application. OWNER agrees to make payment of the Base Fee, established for the PROJECT, and to thereafter permit additional costs to be billed to OWNER. OWNER agrees to make additional payments upon notification by the COUNTY when they are necessary as costs are incurred. 4. The Base Fee shall be in addition to and exclusive of any cost for publication or cost of consulting service determined necessary by the Board of County Commissioners for the consideration of an application or additional COUNTY staff time or expense not covered by the Base Fee. If actual recorded costs exceed the initial Base Fee, OWNER shall pay additional billings to COUNTY to reimburse the COUNTY for the processing of the PROJECT mentioned above. OWNER acknowledges that all billing shall be paid prior to the final consideration by the COUNTY of any land use permit, zoning amendment, or subdivision plan. PROPERTY OWNER (OR AUTHORIZED REPRESENTATIVE) 1 hereby agree to pay all fees related to this application. A 1-$5e 12:r MDLtNA5 Print Name 343 v.t)rAke. &tile, 3ES C,Q1kiptSi CD &O5 -2-C Mailing Address: E -Mail Address: Phone Number: Signature olitActs ilf\circki-t-teiz-k.c...0t4A _'tio 234 / 512.0 Date • HYDRAU-TECH, INC. ENGINEERING & SOFTWARE ATTACHMENT C 363 W. Drake Road, Suite 3B Fort Collins, Colorado 80526 Phone: (970) 223-3984 Fax: (970) 223-8484 HYDRAU-TECH, INC. ENGINEERING & SOFTWARE Review of Section 3-301 Floodplain Overlay Regulations 363 W. Drake Road, Suite 3B Fort Collins, Colorado 80526 Phone: (970) 223-3984 Fax: (970) 223-8484 s D. Floodway. Floodways located within SFHAs are designated as "Floodways." Since the Floodway is an extremely hazardous area due to the velocity of flood waters which carries debris, potential projectiles, and erosion potential, the following provisions shall apply: 1. Encroachments are prohibited unless it has been demonstrated through hydrologic and hydraulic analyses, performed in accordance with standard engineering practice, that the proposed encroachment would not result in any increase in flood levels within the community during the occurrence of the Base Flood discharge. Encroachments include Fill, New Construction, Substantial Improvements, and other development within the regulatory Floodway; There is no floodway at Cattle Creek 2. All New Construction and Substantial Improvements shall comply with all applicable flood hazard reduction provisions in this Code; and The structure at Cattle Creek is an existing structure. The improvements are minor and are for scour protection. 3. Under provisions of 44 CFR Chapter 1, Section 65.12, of the National Flood Insurance Regulations, a community may permit encroachments within the regulatory Floodway that would result in an increase in BFEs provided that the community first applies for a conditional FIRM and Floodway revision through FEMA. There is no floodway at Cattle Creek and scour countermeasures will not increase or decrease BFEs since the installation follows existing ground. E. Standards for Areas of Shallow Flooding. Areas designated as shallow flooding are located within the SFHAs. These areas have special flood hazards associated with Base Flood depths of 1 to 3 feet where a clearly defined channel does not exist and where the path of flooding is unpredictable and where velocity flow may be evident. Such flooding is characterized by ponding or sheet flow; therefore, the following provisions apply: 1. All New Construction and Substantial Improvements of residential structures have the Lowest Floor (including Basement) elevated above the highest adjacent Natural Grade at least 1 foot above the depth number specified in feet on the community's FIRM (at least 3 feet if no depth number is specified). N/A 2. All New Construction and Substantial Improvements of nonresidential structures: a. Shall have the Lowest Floor (including Basement) elevated above the highest natural Grade at least 1 foot above the depth number specified in feet on the community's FIRM (at least 3 feet if no depth number is specified); or N/A HYDRAU-TECH, INC. ENGINEERING & SOFTWARE 363 W. Drake Road, Suite 3B Fort Collins, Colorado 80526 Phone: (970) 223-3984 Fax: (970) 223-8484 b. Shall be designed so that the structure including attendant utility and sanitary facilities, below 1 foot above the Base Flood Elevation, are watertight with walls substantially impermeable to the passage of water and that the structural components have the capability of resisting hydrostatic and hydrodynamic loads of effects of buoyancy. N/A 3. Adequate drainage paths around structures are required to guide flood waters around and away from proposed structures. Drainage shall not adversely impact adjacent properties. Proposed countermeasures are designed to improve the safety of Structure G-07-8, which carries all flood waters from Cattle Creek. Installation of these countermeasures will not affect the drainage path and therefore will not adversely impact adjacent properties. G. Alteration of a Watercourse. For all proposed developments that alter a watercourse within a SFHA, the following standards apply: 1. Channelization and flow diversion projects shall appropriately consider issues of sediment transport, erosion, deposition, and channel migration and properly mitigate potential problems through the project as well as upstream and downstream of any improvement activity. A detailed analysis of sediment transport and overall channel stability should be considered, when appropriate, to assist in determining the most appropriate design. Flow diversion will occur only during construction for a short distance (approximately 20 feet upstream and downstream) and only while the concrete aprons are being constructed during lowest flow season. Flow will remain within the Cattle Creek channel during all construction activities. Sediment transport in Cattle Creek will not be affected since the sediment inflow and outflow to the project reach are not being altered, transport capacity remains the same, and new sediment sources are not being introduced. Erosion and deposition from the overbank construction areas as well as in -stream activities will be properly mitigated through procedures outlined in the Stormwater Management plan that was developed in coordination with CDOT Environmental Staff. Channel migration will not occur due to construction of the scour countermeasures. Therefore, a detailed analysis was not necessary at this site. 2. Channelization and flow diversion projects shall evaluate the residual 100 -year Floodplain. After construction of the scour countermeasures, the project site will be returned to its original configuration and no residual impacts to the 100 -year Floodplain will occur. 3. Any channelization or other stream alteration activity proposed by a project proponent must be evaluated for its impact on the regulatory Floodplain and be in compliance with all applicable Federal, State, and local Floodplain rules, regulations, and ordinances. The only impact to flows during construction will be water diversion (up to 15 cfs) to install the scour countermeasures. The channel will be returned to its original configuration upon completing the construction. No impacts to the regulatory Floodplain will occur. HYDRAU-TECH, INC. ENGINEERING & SOFTWARE 363 W. Drake Road, Suite 3B Fort Collins, Colorado 80526 Phone: (970) 223-3984 Fax: (970) 223-8484 s 4. Any stream alteration activity shall be designed and sealed by a qualified professional engineer or certified professional hydrologist. No stream alteration is proposed at this site. 5. All activities within the regulatory Floodplain shall meet all applicable Federal, State, and local Floodplain requirements and regulations. All scour countermeasure construction activities and related mitigation efforts shall meet applicable Federal, State, and local Floodplain requirements and regulations. No impacts to the Floodplain will occur. 6. Within the regulatory Floodway, stream alteration activities shall not be constructed unless the Applicant demonstrates through a Floodway analysis and report, sealed by a qualified professional engineer, that there is no more than a 0.00 -foot rise in the proposed conditions compared to the existing conditions of the Floodway resulting from the project, otherwise known as a No -Rise Certification. A No -Rise Certification is not required if the community first applies for a Conditional Letter of Map Revision (CLOMR) and Floodway through FEMA. There is no regulatory Floodway at Cattle Creek. Scour countermeasure installation activities at Cattle Creek, Structure G-07-8, are to improve the safety of the structure during flooding events and do not alter stream characteristics and properties. There will be no impacts to flood elevations as a result of the construction. 7. Maintenance shall be required for any altered or relocated portions of watercourses so that the flood -carrying capacity is not diminished. No portions of the watercourse will be altered or relocated as a result of scour countermeasure installation. Countermeasures will improve the safety of Structure G-07-8, which carries the flood waters. The ability of the structure and channel to carry the flood capacity will not be diminished or altered. Therefore, maintenance will not be required. • HYDRAU-TECH, INC. ENGINEERING & SOFTWARE ATTACHMENT D 363 W. Drake Road, Suite 3B Fort Collins, Colorado 80526 Phone: (970) 223-3984 Fax: (970) 223-8484 HYDRAU-TECH, INC. ENGINEERING & SOFTWARE 363 W. Drake Road, Suite 3B Fort Collins, Colorado 80526 Phone: (970) 223-3984 Fax: (970) 223-8484 Responses to Section 4-109 Development in the 100 -Year Floodplain Review Criteria 1. The danger of life and property due to flooding or erosion damage; The purpose of this construction is to prevent scour during 100- and 500 -year flood events on Cattle Creek in order to protect the foundation of Structure G -07-B from failure. The proposed concrete aprons, toewalls, and downstream riprap protection are designed to protect Structure G-07-8 and therefore the traveling public, and will not endanger life or property during flooding. 2. The susceptibility of the proposed facility and its contents to flood damage and the effect of such damage on the individual owner; The proposed scour countermeasure installation is designed to withstand flood damage and effects of such damage to CDOT and nearby property owners by providing an engineered installation to resist forces against the 100- and 500 -year frequency flood flows. 3. The danger that materials may be swept onto other lands to the injury of others; The proposed concrete aprons, toewalls, and downstream riprap protection are designed to withstand severe flooding events and therefore will not be swept onto other lands and pose any risk of injury due to flooding. 4. The compatibility of the property in times of flood for ordinary and emergency vehicles; The proposed scour countermeasure installation will help the property to withstand 100- and 500 - year flood events and will provide safe passage to ordinary and emergency vehicle traffic during flooding. 5. The safety of access to the property in times of flood for ordinary and emergency vehicles; The proposed scour countermeasure installation will not affect the safety of access to the property in times of flood for ordinary and emergency vehicles; it will improve the safety of travel by preventing bridge failure due to foundation scour. 6. The costs of providing governmental services during and after flood conditions, including maintenance and repair of streets and bridges, and public utilities such as sewer, gas, electrical, and water systems; The proposed scour countermeasures will aid in reducing costs of providing governmental services during and after flood conditions by preventing bridge failure due to foundation scour. 7. The expected heights, velocity, duration, rate of rise, and sediment transport of the flood waters and the effects of wave action, if applicable, expected at the site; The proposed scour countermeasures have been designed to withstand the 100- and 500 -year frequency flooding events. Since these countermeasures were designed by not adversely altering existing channel topography and by not altering the existing basin hydrology and sediment sources, they will not cause additional adverse affects due to heights, velocity, duration, rate of rise, and sediment transport of flood waters and the effects of wave action. • HYDRAU-TECH, INC. ENGINEERING & SOFTWARE ATTACHMENT E 363 W. Drake Road, Suite 3B Fort Collins, Colorado 80526 Phone: (970) 223-3984 Fax: (970) 223-8484 0 HYDRAU-TECH, INC. ENGINEERING & SOFTWARE 363 W. Drake Road, Suite 3B Fort Collins, Colorado 80526 Phone: (970) 223-3984 Fax: (970) 223-8484 Site Plan and Construction Drawings This attachment provides the site plan as it relates to the construction of scour countermeasures at Structure G -07-B over Cattle Creek. In the attached construction drawing plan set, on Sheet H04 of H06, the general layout of improvements and affected areas including easements outside of CDOT right-of- way are provided using a scale of 1 inch = 20 feet. Additional construction details (plan and section views) for the concrete aprons, toewalls, and downstream riprap installation are provided on Sheets H05 and H06. SUMMARY OF HYDRAULIC QUANTITIES G-07-6 ITEM NUMBER 203-00010 206-00000 206-00200 210-01000 210-01130 211-03005 420-00102 506-00224 506-00424 601-03000 602-00020 G -07-B over Cattle Creek UNCLASSIFIED EXCAVATION (COMPLETE IN PLACE) STRUCTURE EXCAVATION STRUCTURE BACKFILL (CLASS 2) RESET FENCE RESET GUARDRAIL TYPE 3 DEWATERING G EOTEXTI LE (EROSION CONTROL) (CLASS 1) RIPRAP (24 INCH) SOIL RIPRAP (24 INCH) CONCRETE CLASS D REINFORCING STEEL (EPDXY COATED) CY CY CY LF LF LS SY CY CY CY LB UPSTREAM APRON AND TOE WALL 37 52 38 104 0 0.5 0 0 0 14 1465 DOWNSTREAM APRON AND TOE WALL 0 52 38 122 50 0.5 0 0 0 14 1465 DOWNSTREAM RIPRAP APRON 0 196 0 0 0 0 97 116 52 0 0 PROJECT TOTAL 37 300 76 226 50 1 97 116 52 28 2930 EARTHWORK QUANTITIES (FOR INFORMATION ONLY) G -07-B FILL ITEMS EMBANKMENT MATERIAL CUBIC YARDS SOIL FOR RIPRAP* 24 TOTAL 24 CUT ITEMS STRUCTURE EXCAVATION CUBIC YARDS UPSTREAM DOWNSTREAM 52 248 TOTAL 300 EARTHWORK BALANCE CUBIC YARDS FILL TOTAL 24 CUT TOTAL (300) TOTAL (276) (EXPORT) *BACKFILL FOR SOIL RIPRAP IS INCIDENTAL TO THE RIPRAP PAY ITEM Print Date:12/7/2018 (� = C� =ges Sheet Revisions Colorado Deportment of Transportation As Constructed CATTLE CREEK SH 82 MM 7.909 SUMMARY OF HYDRAULIC QUANTITIES Project No./Code File Name: G -07-B HYDR_QUANTITIES.dgn Date: Comments Init. NHPP 0821-107 No Revisions: Horiz. Scale: As Noted Vert. Scale: As Noted 1/4 C DOT 202 Centennial Street CO Glenwood Springs CO 81601 1 Phone: 970945-8187 FAX: 970-947-5133 Unit Information Unit Leader Initials Revised: Designer: AM Structure U -07-B 21200 sss w. DRAKE RD. HYDRAU-TECH, INC. s�IrE ae ENGINEERING AND SOFTWAREFORT cOLLINs, Co ao526 PHONE (eo> z3-aeaa Detailer: BS Numbers Region 3 Glenwood Residency AMK y Void: Sheet Number Sheet Subset: HYDR Subset Sheets: H01 of H06 G-07-8 RIO CR NDE BIKE TR IL (LOCATp N A PROX. CATTLE CREEK b'CI SH 82 BRID OVER CATTLE CRE 0-07 •=i tr - Fr SH 82 BRIDGE OVER CATTLE CREEK G -07-B RIO GRANDE BIKE TRAIL 6030 6020 6010 6000 PLAN VIEW FOR SH 82 OVER CATTLE CREEK SCALE: 1" = 12 ' /\ /N. 00 C\I C3) z 5990 — 30+00 LEGEND (XXX > HEC -RAS ID 500 -YEAR WATER SURFACE N 50' 100 -YEAR WATER SURFACE -FINISHED GRADE 200' 3000 1 2000 G 1000 0 FLOOD FREQUENCY CURVE 10 100 Recurrence Interval (years) 100 -YEAR SCOUR ANALYSIS 1000 EXISTING GROUND (APPROX.) 6030 6020 6010 6000 6030 6020 6010 POS 100-Y 6000 5990 5880 SH 82 BRIDGE OVER CATTLE CREEK G -07-B ABUT 1 Depth (ft) Degradation Contraction Abutment Left Right Existing Condition 0.0 9.5 5.6 6.2 After Countermeasure Installation 0.0 0.0 0.0 0.0 EXISTING GROUND (APPROX.) 6030 6020 6010 6000 6030 6020 6010 POS 100-Y 6000 5990 5880 SH 82 BRIDGE OVER CATTLE CREEK G -07-B ABUT 1 Velocity (avg) (ft/s) Freeboard WSEL (ft) /— ABUT 2 Existing r V 0.0 YEAR Proposed 15.6 3.0 500 6017.0 .44 �� PROJECT AR SCOUR / (APPROX.)\ EXISTING GROUND WSEL. 100 WSEL. 6016.3 TEAR 6013.4 ♦/ ♦ \ •/ Ny ELEV 6002.1 ELEV // \ 3000.1 / / EXISTINGN PILE / EXISTING PILE 405+60 PRE PROJECT 405+00 100 -YEAR SCOUR 5990 40+00 50+00 60+00 BRIDGE SECTION - SCOUR PLOT CATTLE CREEK PROFILE HORIZ. SCALE: 1" = 500' VERT SCALE: 1" = 20' HORIZ. SCALE: 1" = 20' VERT SCALE: 1" = 20' 6017 6016 6015 56014 0 10 • W 6013 - STAGE - DISCHARGE CURVE (AT SECTION 9.25 BR U) 6012 - 6011 0 1000 2000 3000 Discharge (515) 4000 COMPARISON OF HYDRAULICS* 5000 HEC -RAS Model Velocity (avg) (ft/s) Freeboard WSEL (ft) Required (ft) Actual (U/S) (ft) Existing 15.6 3.0 0.0 6017.0 Proposed 15.6 3.0 0.0 6017.0 *100 Year D,ent, \,elocity from downstream internal bridge section. WSEL obtained from cross section 18 ft upstream of bridge (FHWA,HDS 1). 6030 CHANNEL DESCRIPTION Bottom Material—Cohesive 0 Non -Cohesive El 6020 Bottom Material—Size —Clay ® Silt ® Sand El Gravel 0 Cobbles ® Other ❑ Stream Form — Straight 0 Meandering Z Braided 0 Mannings "n" For Design — Channel = 0.04 6010 Overbanks = 0.06 Debris — Brush El Trees/Logs 0 Ice 0 Other ❑ Drainage Area = 88 sq. mi. 6000 5990 NOTES: 1. SECTION SHOWN FROM LEFT TO RIGHT LOOKING DOWNSTREAM. WATER SURFACE ELEVATIONS 5880 TAKEN FROM CROSS SECTION 9.25 U/S BRIDGE FACE. 404+80 2. 100 -YEAR SCOUR IS SHOWN INSTEAD OF 500 -YEAR SCOUR DUE TO HIGHER UPSTREAM SCOUR POTENTIAL FOR NO BACKWATER CONDITIONS. Print Date:12/7/2018 File Name: G-07-BHYDR BHIS.dgn Horiz. Scale:As Noted Vert. Scale: As Noted Unit Information Unit Leader Initials I 0- 363 DRAKE RD. HYDRAU-TECH, INC. SUITEW. 38 ENGINEERING AND SOFTWARE FORT COLLINS, CO 80526 PHONE (970) 223-3984 Sheet Revisions Date: Comments Init Colorado Department of Transportation 202 Centennial Street Glenwood Springs, CO 81601 Phone: 970-945-8187 FAX: 970-947-5133 Region 3 Glenwood Residency AMK As Constructed No Revisions: Revised: Void: CATTLE CREEK SH 82 MM 7.909 BRIDGE HYDRAULIC INFORMATION SHEET Designer: AM Detailer: BS Sheet Subset: HYDR Structure Numbers Subset Sheets: H02 of H06 Project No./Code NHPP 0821-107 21200 Sheet Number GENERAL STRUCTURAL NOTES 1. GRADE 60 REINFORCING STEEL IS REQUIRED. 2. ALL REINFORCING STEEL SHALL BE EPDXY COATED UNLESS OTHERWISE NOTED. 3. THE FOLLOWING TABLE GIVES THE MINIMUM LAP SPLICE LENGTH FOR EPDXY COATED REINFORCING BARS PLACED IN ACCORDANCE WITH SUBSECTION 602.06. THESE SPLICE LENGTHS SHALL BE INCREASED BY 25% FOR BARS SPACED AT LESS THAN 6" ON CENTER OR LESS THAN 3" OF LATERAL COVER. BAR SIZE #4 #5 #6 #7 #8 #9 #10 #11 SPLICE LENGTH FOR CLASS B, BZ, OR D CONCRETE 1'-10" 2'-3" 3'-4" 3'-11" 4'-5" 5'-6" 6'-10" 8'-2" 4. ELEVATIONS, AND DIMENSIONS CONTAINED IN THESE PLANS ARE CALCULATED FROM THE "AS CONSTRUCTED PLANS" AS WELL AS A RECENT FIELD SURVEY. THESE ELEVATIONS, AND DIMENSIONS MAY BE ADJUSTED TO MEET THE EXISTING STRUCTURE. THE CONTRACTOR SHALL VERIFY ALL DEPENDENT DIMENSIONS IN THE FIELD BEFORE ORDERING OR FABRICATING ANY MATERIAL. 5. THE CONTRACTOR SHALL BE RESPONSIBLE FOR THE STABILITY OF THE STRUCTURE DURING CONSTRUCTION. ANY DAMAGE TO THE EXISTING STRUCTURE SHALL BE REPAIRED AND PAID FOR BY THE CONTRACTOR. THE CONTRACTOR SHALL SUBMIT A METHOD STATEMENT TO THE ENGINEER FOR REVIEW AND APPROVAL, PRIOR TO MAKING REPAIRS. REPAIRS THAT AFFECT LOAD PATHS OR REQUIRE THE SIZING OF MEMBERS SHALL BE SIGNED AND SEALED BY A PROFESSIONAL ENGINEER REGISTERED IN THE STATE OF COLORADO WITH RELEVANT EXPERIENCE. THE COST OF THIS WORK SHALL BE BORNE BY THE CONTRACTOR. 6. ALL SAW WATER, DRILLING WASTE, CONCRETE WASHOUT AND ANY OTHER CONSTRUCTION DEBRIS SHALL BE COLLECTED AND DISPOSED OF OFF SITE IN ACCORDANCE WITH ALL APPLICABLE FEDERAL, STATE, AND LOCAL REGULATIONS AT NO ADDITIONAL COST TO THE PROJECT. UNDER NO CIRCUMSTANCES SHALL SUCH MATERIAL BE ALLOWED TO ENTER ANY NATURAL OR MANMADE WATER WAY OR STORM DRAIN. DESIGN DATA Design Codes: AASHTO, Seventh edition LRFD with current interims ACI 350-06 ACI 318-14 Reinforced Concrete: Class D Concrete: Reinforcing Steel: f'c = 4,500 psi fy = 60,000 psi Print Date:12/7/2018 File Name: G-07-B_HYDR_Structural Notes.dgn Horiz. Scale:As Noted Vert. Scale: As Noted Unit Information Unit Leader Initials szo= 363 W. DRAKE RD. HYDRAU-TECH, INC. SUITE 36 ENGINEERING AND SOFTWARE FORT COLLINS, CO 80526 PHONE (970) 223-3984 Sheet Revisions Date:: Comments Init. Colorado Department of Transportation 202 Centennial Street Glenwood Springs, CO 81601 Phone: 970-945-8187 FAX: 970-947-5133 Region 3 Glenwood Residency AMK r___As Constructed No Revisions: Revised: Void: CATTLE CREEK SH 82 MM 7.909 GENERAL INFORMATION Project No./Code NHPP 0821-107 Designer: AM Detailer: BS Structure Numbers 0-07-B 21200 Sheet Subset: HYDR Subset Sheets: H03 of H06 Sheet Number TEMPORARY EASEMENT TE -9 CDOT ROW PRIVATE SLIVER PARCEL RFTA ROW TEMPORARY EASEMENT TE -8 / / / II / I / ,/1 / y, I 1 1 1 1 1 111111 II 11111 II II 1 1 1 1 1 1 1 1 1 1 1 1 1 1, \ I 1 1 1 , 1 1 1 1 1 1 1 1 1 1, 1 \ 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 I I I \ I 11 1 r� I I I III . 11 1 1 1 1 1 \ I 1' I � I I 1 1 1 Iii 1 1 1, \\ II 1 11 1 ,0,1 II i II II II I I II II III II 1 �I 1 C��j\' II II I I i I 6, II 1 20' I I 1 1 1\II 1 0 II II 1 1 1SSTIN. 1 1, 11 I\,I 11 U' k ET A III I vI o \ 1 1 1 � 1� 1 1 1 \\ 1 1 1 1 I ,t1 I (V_ 1 1 1 II 1 II 11 , II 1 1 i 1 1 i ISHBBTI H05 0 m= z O N 0 DEER FENCE 0 z CO co 03 co TER �o N N CNSTRU TION 0 0 II j II �Il} FT) Z 111111111111111111 Z -1 0 0 / // IIIIg0WNSIREAM DETAIL EXISTING STRUCTU'E G -07-B 111, II II II 11 II 11 II 11 0 0 I l 1 1 1 1, ST(LATEHIGHWAYG WAY APPROXIN 82 ATE) I MILE MARKER 7.909 Wut ill \9wM� 1 1 1 1 1 1 I zI '�i:l�� I o o I, I, it I/ i fteaV.� 1 j 1/ ���� �p�i� IIII 1 � % �``' 11111 • I I ����� ���C���� II 1111 0 � I 1 CSP I I I �� �u�� I/o I 77\ 7"4"'\ �l, �uA��II I I I 10 / A���� u��:� 1 1 111I Q\ „I�l/1111W/0/1*****/ p��� 111111//l(fl'/ `, `, \ I , �/•// AT � u`` IIII 1 I I I /1 1 1 1 ` 1 1 11\, 11 , 11I II��.���IC, /���j jjl ll:;/II,IIIIII,II,11111���i����l/ n�*:� I�)1I/j1I I, II11,1 1 1 1 ,III 1 1 1 ��/��� 1 11I,'�II 1 , ,II , 1 I 1 , IIII,I,III` •/�,/u�``�ri,�III , , 11, 1III111111\\`IlL4/�u114 -11I IIII, 11 111 I II I I 1 1 I��� .���� I I I 111I,j1111,11,1111 `� ►'/•/ /,111 I I IIIIII1� � •!1�i��1�.,,�,r��� \ I, 111111 11 II 11 II ,II 111111 I , 1 1 1 cs II '11,1111 I I I 1 Il 6� ,111,111 I 1 11 II 1 II 111111 o III o II II II o = CONCRETE EXISTING o v2' FOUNDATION co z no 0 z 0 m RIPRAP (24 INCH) SOIL RIPRAP (24 INCH) SEE SHEET H06 H 0 15' 30' SCALE OF FEET 60' 1` j111 ji 1 1j11 11 I '11i 1111111 EXISTING OV � HAD ELECTRICAL IIOIt�11Y (PROTECT FROM Eq, PIE DURING CONSTRUOT ON) I 00 11 I 1111 I m 0 I, I I II 1111,1'111 II I I,I 1, I, 11 1 I I 1 II I, ' I i ', 11 IL , 1 1 1 \ I LEGEND RIPRAP (24 INCH) EXTENT OF SOIL RIPRAP (24 INCH) CONCRETE CLASS D STRUCTURE BACKFILL (CLASS 2) EXISTING CONCRETE NATIVE BACKFILL OHE EXISTING GROUND PROPOSED GROUND EXISTING RIGHT-OF-WAY EXISTING OVERHEAD ELECTRIC UTILITY TEMPORARY EASEMENT SEE UPSTREA DETAIL SH ET H06 NOTES: EXISTING BARBED WIRE FENCE RESET AFTER CONSTRUCTION (104 LF) TEMPORARY EASEMENT �TE-10 _ � 1 - 6005 - 9009 -_ / / 5 11111:\:'\1, ; (O r 111111\`\�\, � I, I I I `�V / TEMPORARY EASEMENT TE -11 1. AT THE DIRECTION OF PROJECT ENGINEER, FIELD ADJUSTMENT OF THE RIPRAP THICKNESS AND SHAPE FROM THE TYPICAL DETAIL MAY BE REQUIRED TO TAKE INTO ACCOUNT THE EXISTING BANK PROTECTION AND PROPOSED GROUND/EXISTING GROUND. 2. ALL NEW RIPRAP OUTSIDE OF THE BRIDGE STRUCTURE FOOTPRINT AND ABOVE THE ORDINARY HIGH WATER MARK (OHW) SHALL BE SOIL RIPRAP OF THE SAME SIZE INDICATED ON THE PLANS (SEE DETAILS). THE APPROXIMATE OHW ELEVATION IS 6003.4. 3. ALL RIPRAP SHOULD BE PLACED BELOW EXISTING GROUND AT A DEPTH OF 4'-6" 4. FOR DETAILS OF EXISTING STRUCTURE SEE CDOT AS -BUILT DRAWINGS. Print Date:12/7/2018 File Name: G-07-BHYDR Site Plan.dgn Horiz. Scale:As Noted Vert. Scale: As Noted Unit Information Unit Leader Initials 363 DRAKE RD. HYDRAU-TECH, INC. SUITEW. 3e ENGINEERING AND SOFTWARE FORT COLLINS, CO 80526 PHONE (970/ 223-3984 Sheet Revisions Date: Comments Init. Colorado Department of Transportation 202 Centennial Street Glenwood Springs, CO 81601 Phone: 970-945-8187 FAX: 970-947-5133 Region 3 Glenwood Residency AMK r____As Constructed No Revisions: Revised: Void: CATTLE CREEK SH 82 MM 7.909 SITE PLAN Project No./Code NHPP 0821-107 Designer: AM Detailer: BS Sheet Subset: HYDR Structure I Numbers Subset Sheets: H04 of H06 G -07-B 21200 Sheet Number NOTES: 1. CONTRACTOR SHALL BE REQUIRED TO USE A REBAR LOCATOR TO AVOID DRILLING THROUGH EXISTING REBAR. WHEN INSTALLING DOWELS, AVOID USING CORE DRILL TO PREVENT DRILLING THROUGH EXISTING REBAR. 2. CDOT APPROVED EPDXY ADHESIVE IS INCIDENTAL TO THE REINFORCING STEEL PAY ITEM. MATCH EXISTING GROUND ELEV 6001.9 m SEE SECTION G (H07) SEE SECTION F (H07) EXISTING 12BP74 20' LONG 11'-6" #4 © 12" #4 @ 6" 1 SECTION A N.T.S. 4" (TYP.) 1'-8" EXISTING 12BP74 20' LONG ELEV 6002.1 EXISTING GROUND (APPROX.) EXTENT OF FULL DEPTH RIPRAP. TRANSITION TO EXISTING GROUND AT 1:1. FINISHED GRADE NATIVE BACKFILL STRUCTURE BACKFILL (CLASS 2) #4 © 12" EW �i/\7 20' TOP OF SOIL COVER TO MATCH EXISTING GROUND NOTE: FOR LEGEND SEE SHEET H04 SOIL RIPRAP (24 INCH) SEE SHEET H06 NATIVE BACKFILL/SOIL COVER NOT SHOWN 16 - #4 X 2'-2" DOWELS, EQ. SPC. 21 - #4 X 2'-2" DOWELS, EQ. SPC. - #4 X 2'-2" OWELS, EQ. SPC. 8 - #4 X 2'-2" DOWELS, EQ. SPC. #4 © 6" #4 © 12" #4 X 2'-2" DOWELS EXISTING STRUT RIPRAP (24 INCH) GEOTEXTILE (EROSION CONTROL) (CLASS 1) EXISTING STRUT MATCH EXISTING GROUND #4 X 2'-2" DOWELS 5/$" 0 HOLE, FILL WITH HILTI HIT -RE 500 V3 EPDXY ADHESIVE OR APPROVED EQUAL STRUCTURE BACKFILL (CLASS 2) SECTION B N.T.S. CONTRACTOR SHALL NOT EXCAVATE BELOW THE BOTTOM OF THE EXISTING STRUTS TOP OF SOIL COVER TO MATCH EXISTING GROUND 11 - #4 X 2'-2" DOWELS, EQ. SPC. DOWNSTREAM PLAN VIEW 0 5' 10' SCALE OF FEET 2a EXISTING STRUCTURE G -07-B Print Date:12/7/2018 File Name: G-07-BHYDR Downstream Details.dgn Horiz. Scale:As Noted Vert. Scale: As Noted Unit Information Unit Leader Initials 363 W. DRAKE RD. HYDRAU-TECH, INC. SUITE 35 ENGINEERING AND SOFTWARE FORT COLLINS, CO 80526 PHONE (970) 223-3984 Sheet Revisions Date:: Comments Init. Colorado Department of Transportation Region 3 202 Centennial Street Glenwood Springs, CO 81601 Phone: 970-945-8187 FAX: 970-947-5133 Glenwood Residency AMK r____As Constructed No Revisions: Revised: Void: CATTLE CREEK SH 82 MM 7.909 DOWNSTREAM CONCRETE APRON DETAILS Project No./Code NHPP 0821-107 Designer: AM Detailer: BS Sheet Subset: HYDR Structure Numbers Subset Sheets: H05 of H06 G-07-8 21200 Sheet Number EXISTING STRUCTURE G -07-B 9 - #4 X 2'-2" DOWELS, EQ. SPC. 11 - #4 X 2'-2" DOWELS, EQ. SPC. t DESIGN RIPRAP GRADE ACTUAL FINISHED GRADE ABOVE OHW (ELEVATIONS PER PLAN) 8 - #4 X 2'-2" DOWELS, EQ. SPC. N 0' Si 10' SCALE OF FEET 16 - #4 X 2'-2" DOWELS EQ. SPC. UPSTREAM PLAN VIEW 21 - #4 X 2'-2" DOWELS, EQ. SPC. #4 X 2'-2" DOWELS MATCH EXISTING GROUND ,\ 111 GEOTEXTILE (EROSION CONTROL) (CLASS 1) #4 O 12" EW ELEV 6002.5 EMBANKMENT MATERIAL (SOIL COVER) SOIL RIPRAP (D50 & THICKNESS VARY) MIX SOIL AND RIPRAP COMPLETELY (SEE NOTES) SOIL RIPRAP N.T.S. NOTE: FOR LEGEND SEE SHEET H04 SOIL RIPRAP NOTES: 1. SOIL RIPRAP DETAILS ARE APPLICABLE TO AREAS OUTSIDE BRIDGE FOOTPRINT AND ABOVE OHW. REFER TO THE SITE PLAN FOR ACTUAL LOCATION AND LIMITS. 2. VOIDS IN RIPRAP SHALL BE FILLED WITH EMBANKMENT MATERIAL. MIX UNIFORMLY 65% RIPRAP BY VOLUME WITH 35% OF APPROVED SOIL BY VOLUME PRIOR TO PLACEMENT. 3. PLACE STONE -SOIL MIX TO RESULT IN SECURELY INTERLOCKED ROCK AT THE DESIGN THICKNESS AND GRADE. COMPACT AND LEVEL TO ELIMINATE ALL VOIDS AND ROCKS PROJECTING ABOVE DESIGN RIPRAP TOP OF GRADE. 4. PROVIDING AND PLACING SOIL FOR SOIL RIPRAP AND COVER SHALL BE INCLUDED IN COST OF SOIL RIPRAP. ELEV 6002.7 11'-6" 4" (TYP.) #4 © 12" #4 c© 6" 71 GRADEFINISHED 7 GRADE EXISTING GROUND (APPROX.) /\„ \ .\ EXISTING STRUT STRUCTURE BACKFILL (CLASS 2) 5/s" 0 HOLE, FILL WITH HILTI HIT -RE 500 V3 EPDXY ADHESIVE OR APPROVED EQUAL #4 © 12" #4 © 6" II #4 X 2'-2" DOWELS CONTRACTOR SHALL NOT EXCAVATE BELOW THE BOTTOM OF THE EXISTING STRUTS EXISTING STRUT STRUCTURE BACKFILL (CLASS 2) SECTION C N.T.S. 2' MATCH EXISTING — GROUND UNCLASSIFIED EXCAVATION (COMPLETE IN PLACE) PAY LINE FOR TOEWALL CONSTRUCTION NATIVE BACKFILL Print Date:12/7/2018 File Name: G-07-BHYDR Upstream Details.dgn Horiz. Scale:As Noted Vert. Scale: As Noted Unit Information Unit Leader Initials 363 W. DRAKE RD. HYDRAU-TECH, INC. SUITE 35 ENGINEERING AND SOFTWARE FORT COLLINS, CO 80526 PHONE (970) 223-3984 Sheet Revisions Date:: Comments Init. Colorado Department of Transportation 202 Centennial Street Glenwood Springs, CO 81601 Phone: 970-945-8187 FAX: 970-947-5133 Region 3 Glenwood Residency AMK r____As Constructed No Revisions: Revised: Void: CATTLE CREEK SH 82 MM 7.909 UPSTREAM CONCRETE APRON DETAILS Project No./Code NHPP 0821-107 Designer: AM Detailer: BS Sheet Subset: HYDR Structure Numbers Subset Sheets: H06 of H06 G-07-8 21200 Sheet Number • HYDRAU-TECH, INC. ENGINEERING & SOFTWARE ATTACHMENT F 363 W. Drake Road, Suite 3B Fort Collins, Colorado 80526 Phone: (970) 223-3984 Fax: (970) 223-8484 4 Jo D 10 E.1717r_ . 1 lik A� }VI 1 L. 5941 ` [� C ZONES z frip ` 5950 ��� � ;ONES 'i � RNI8 !iir. ) ZONE J 1 B 7 Structure G -07-B ZONE 8 10 Ir 6014 ONE Al --61016 l� fi0 \„„41c ..,1,500 YEAR FL DOD CONTAINED IN CULVERT ZONE B Cattle t ZONE: B 6024 ZONE B T. 6053 ZONE 18 ZONE B — 7ONE C--- ZONE E3 17 ZONE C APPROXIMATE SCALE IN FEET 1000 0 roan `ter--r=z- MTINEI FMB $MINCE Menu 1 FIRM FLOOD INSURANCE RATE MAP GARFIELD COUNTY. COLORADO {LININCORPORAltD AREAS) PANEL 1415 OF 1100 r$Li VAP k Ww PNriLfii YO■ rpr}ITLOf CONIMINITY-PAREI NOM 089205 146S B MAP REYISEO: JANUARY 3, 1916 Federal Flwepwl-i Management A+rcsrcy ihr to ■n diva. tcve d a paraar. al trim aa6as rmlbremc.d Falai mag M -ra eAtractad,Arng F MFT Cr. -Lint 714s ++rra Wes not oda:I rMnpss :t golgotoiM:e rRgCh rom, Pow Own mega ■roapeY to 1M Oe. Min tne folia tallwk Iv M I.l I prad.ci ireimmotaft aahad NNI: awl flood I,urmnc+r frouYntn loan mope cfndr I1.s FERIA Flocs Map Stan P worm. mac gums pro • HYDRAU-TECH, INC. ENGINEERING & SOFTWARE ATTACHMENT G 363 W. Drake Road, Suite 3B Fort Collins, Colorado 80526 Phone: (970) 223-3984 Fax: (970) 223-8484 -. HYDRAU-TECH, INC. ENGINEERING & SOFTWARE 363 W. Drake Road, Suite 3B Fort Collins, Colorado 80526 Phone: (970) 223-3984 Fax: (970) 223-8484 s Parcel # Name Phone Notes Roaring Fork Transportation Authority (RFTA) Angela Anderson W: 970.384.4982 ahenderson@rfta.com 1340 Main Street C: 970.948.4443 Carbondale 81623 TE -3, TE -3A Site Address: Railroad ROW PE -4, TE -4 Site Address: 2718 S Glen Ave TE -9 Site Address: Railroad ROW TE -8 Carbondale Investments, LLC Ted C. Skokos 214.750.7800 ted@skokos.net 5121 Park Lane Dallas, TX 75220 Site Address: Sec 7, T7S, R88W, 6th P.M. TE -10 Aspen Equity Group, LLC Travis J. Stewart 970.309.1515 tjs@ws-materials.com 13 Silver Spruce Dr Carbondale CO 81623 970.379.2898 Jody - Manager Site Address: 82 County Road 113 TE -11 CCC -B, LLLP Wayne Rudd 970-379-2422 0132 Park Avenue 970.927.4038 x 4 Property Manager Basalt CO 81621 970.309.0123 Chris Jung (Prounounced Young) chris@ruddconstruction.com Site Address: 62 County Road 113 • HYDRAU-TECH, INC. ENGINEERING & SOFTWARE ATTACHMENT H 363 W. Drake Road, Suite 3B Fort Collins, Colorado 80526 Phone: (970) 223-3984 Fax: (970) 223-8484 1. SITE DESCRIPTION A. PROJECT SITE LOCATION: Project 21200 is being constructed between mile marker 1.5 and 11.6 along State Highway 82 near Glenwood Springs, Colorado. Scour mitigation work is being constructed at mile marker 7.909 at CDOT Structure G -07-B over Cattle Creek, 4 miles North of Carbondale, Colorado. Chip seal treatment is being conducted in New Castle, Colorado. B. PROJECT SITE DESCRIPTION: Project 21200 is a surface treatment project with associated curb ramp and guardrail upgrades. Also included in the project are traffic signal upgrades, chip seal treatment, and construction of scour countermeasures that will be installed at G -07-B over Cattle Creek. The scour countermeasures at this site include installation of riprap and construction of concrete slab, apron and toewalls at the inlet and outlet of the structure. Excavation will be required for installation of the aprons, slabs, and riprap. C. ACRES OF DISTURBANCE: 1. Total area of construction site (LOC): 0.54 acres 2. Total area of disturbance (LDA): 0.49 acres 3. Acreage of seeding: 0.40 acres 4. Total area of impervious surface: 0 acres 5. Total area of new impervious surface: 0.02 acres D. RECEIVING WATER: 1. Outfall locations: Roadway runoff at the upstream and downstream embankment via existing drainage ditch. Storm water outlet from upstream adjacent parking lot. 2. Names of receiving water(s) on site: Cattle Creek 3. Ultimate receiving water: Roaring Fork River 4. Horizontal distance nearest water of the state is from project: 0 feet E. EXISTING SOIL DATA: Soils range from silty clayey sand and silty sand, which are erodible, underlain by boulders, cobbles and gravel. F. EXISTING VEGETATION, INCLUDING PERCENT COVER: Vegetative transects are not required, by permit, on projects with under an acre of disturbance. However, it is advised that transects be completed prior to construction, as a quality control for post construction revegetation assessment. If transects are not completed on a project, at a minimum describe the quality of the existing vegetation. A survey including general description of existing vegetation shall be conducted by the SWMP Administrator prior to any ground disturbance on the project. The SWMP Administrator shall photo - document existing vegetation where all work will be occurring. The SWMP Administrator shall also perform the vegetation survey transect(s) including photo documentation as outlined in Chapter 4.1 1.2 of CDOT's Erosion Control and Stormwater Quality Guide. Pre -Construction: Date of survey: Description of existing vegetation: Map or table showing transect locations in SWMP Notebook: %Density: Post -Construction: Date of survey: Description of existing vegetation: Map or table showing transect locations in SWMP Notebook: %Density: 2. STORMWATER MANAGEMENT CONTROLS FIRST CONSTRUCTION ACTIVITIES THE CONTRACTOR SHALL PERFORM THE FOLLOWING: A. POTENTIAL POLLUTANT SOURCES 1. Evaluate, identify and describe all potential sources of pollutants at the site in accordance with subsection 107.25 and place any BMPs/Control Measures required to contain potential pollutants. B. OFFSITE DRAINAGE (RUN ON WATER) 1. Place BMPs/Control Measures to address run-on water in accordance with subsection 208.03. C. CONSTRUCTION DEWATERING: 1. Obtain a dewatering permit from CDPHE if conditions of their low risk guidance for Discharges of Uncontaminated Groundwater to Land are not met; see subsection 107.25(b) 8. D. VEHICLE TRACKING PAD 1. BMPs/Control Measures shall be implemented in accordance with subsection 208.04. E. PERIMETER CONTROL 1. Perimeter control shall be established as the first item on the SWMP to prevent the potential for pollutants leaving the construction site boundaries, entering the stormwater drainage system, or discharging to state waters. 2. Perimeter control may consist of vegetation buffers, berms, silt fence, erosion logs, existing landforms, or other BMPs/Control Measures as approved. 3. Perimeter control shall be in accordance with subsection 208.04. 3. SWMP ADMINISTRATOR: A. SWMP ADMINISTRATOR FOR DESIGN: Name/Title Contact Information Albert Molinas, Ph.D., P.E., Hydrau-Tech, Inc. molinas@hydrau-tech.com 970.223.3984 B. SWMP ADMINISTRATOR FOR CONSTRUCTION: (See Subsection 208 Under an Acre Specification) The Contractor shall designate a SWMP Administrator for Construction upon ownership of the SWMP. The SWMP Administrator shall become the owner/operator and assume responsibility for all design changes to the SWMP implementation and maintenance in accordance to 208.03. The SWMP Administrator shall be responsible for implementing, maintaining and revising SWMP, including the title and contact information. The activities and responsibilities of the SWMP administrator shall address all aspects of the projects SWMP. (Update the information below for each new SWMP Administrator) (Copy of TECS Certification must also be included in the SWMP Notebook.) The SWMP Administration for construction is not a separate pay item but is included in the cost of the work. Name/Title Contact Information Certification # Start Date Engineer Approval 4. DURING CONSTRUCTION The SWMP should be considered a "living document" that is continuously reviewed and modified. During construction, the following items shall be added, updated, or amended as needed by the Contractor in accordance with Section 208 A. MATERIALS HANDLING AND SPILL PREVENTION: prior to construction commencing the Contractor shall submit a Spill Prevention, Control and Countermeasure Plan, see subsection 208.06. Materials handling shall be in accordance with subsection 208.06. B. STOCKPILE MANAGEMENT: shall be done in accordance with subsection 107.25 and 208.07 C. CONCRETE WASHOUT: Concrete wash out water or waste from field laboratories and paving equipment shall be contained in accordance with subsection 208.05. D. SAW CUTTING: shall be done in accordance with subsection 107.25, 208.04, 208.05 E. STREET SWEEPING: shall be done in accordance with subsection 208.04 Print Date:12/3/2018 File Nome: 08-21200ENV_G-07-B-SWMP NARRATIVE-ENVI.dgn Horiz. Scale: As Noted Vert. Scale: As Noted Unit Information: Unit Leader: Initials co= 363 HYDRAu-TECH, INC. wireW. 38ORa(e 50. ENGINEERING AND SOFTWARE FORT COLLINS, CO 60526 PHONE (970) 223-3984 Sheet Revisions Dote: Comments Init. Colorado Department of Transportation 202 Centenniol Street Glenwood Springs, CO 81601 Phone: 970-945-8187 FAX: 970-947-5133 Region 3 Glenwood Residency AMK As Constructed No Revisions: CATTLE CREEK SH 82 MM 7.909 SWMP NARRATIVE 1 Project No./Code NHPP 0821-107 Revised: Designer: AM Void: Detoiler: BS Sheet Subset: ENVI Structure I Numbers Subset Sheets: E01 of E08 G -07-B 21200 Sheet Number 5. BMP/CONTROL MEASURE MAINTENANCE A. Maintenance shall be in accordance with subsection 208.04 (f). 6. INTERIM AND FINAL STABILIZATION A. SEEDING PLAN Soil preparation, soil conditioning or topsoil, seeding (native), mulching (weed free) and mulch tackifier will be required for an estimated 0.37 acres of disturbed area within the right-of-way limits which are not surfaced. The following types and rates shall be used: COMMON NAME BOTANICAL NAM LBS. PLS PER ACRE 1 Slender wheatgrass Elymus trachycaulus ssp. Trachycaulus 'San Luis' 3.5 Western wheatgrass Pascopyrum smithii 'Arriba' 3.0 Sandberg bluegrass Poa secunda ssp. Sandbergii 'High Plains' 0.5 Alkali scaton Sporobolus airoides 0.5 Sand dropseed Sporobolus cryptandrus 0.5 Rocky Mountain fescue Festuca saximontana 2.0 Indian ricegrass Achnatherum hymenoides 'Paloma' 3.0 Wheat x Wheatgrass sterile hybrid Triticum aestivum x Elytrigia elongate 3.0 Rocky Mountain penstemon Penstemon strictus 1.0 Sulfur flower Eriogonum umbellatum 1.0 TOTAL 18.0 Soil preparation, soil conditioning or topsoil, seeding (wetlands), mulching (weed free) and mulch tackifier will be required for an estimated 0.03 acres of disturbed area within the right-of-way limits which are not surfaced. The following types and rates shall be used: COMMON NAME Biological nutrient organic based fertilizer (lbs/acre)* BOTANICAL NAME LBS. PLS PER ACRE j "Sourdough" Bluejoint reedgrass 65 Calamagrostis Canadensis 2.0 "Nortran" Tufted Hairgrass Deschampsia Caespitosa 1.0 illi lag-__ B. SEEDING APPLICATION: Drill seed 0.25 inch to 0.5 inch into the soil. In small areas not accessible to a drill, hand broadcast at double the rate and rake 0.25 inch to 0.5 inch into the soil. C. MULCHING APPLICATION: Apply a minimum of 2 tons of certified weed free straw or 2 tons of certified weed free straw per acre and in accordance with Section 213, and mechanically crimp it into the soil in combination with an organic mulch tackifier. D. SPECIAL REQUIREMENTS: 1. Due to steep slopes (>2:1), hydroseeding will be allowed on this project for permanent stabilization. Hydroseeding rate shall be at double the seeding rate. Hydroseed shall be applied in two applications. The first application is a slurry which contains seed, organic amendment and fertilizer. The second application is a slurry of mulch and tackifier. Both slurry applications shall be applied from top of slope downward, in 50' vertical lifts, unless otherwise approved by the Engineer. E. SOIL CONDITIONING AND FERTILIZER REQUIREMENTS: Minimum requirements for all disturbances to receive seeding (native). Soil conditioner paid for as Item 212- Soil Conditioning (Acre) Biological nutrient organic based fertilizer (lbs/acre)* Humate (lbs/acre) Compost (cys/acre) All areas <2:1 [1/2 inch depth] 300 200 65 *Biological nutrient shall not exceed 8-8-8 (N -P -K). Humate based material shall be in accordance to Standard Special Provision 212 and compost shall be in accordance to Standard Special Provision 212. F. BLANKET APPLICATION: On slopes and ditches requiring a blanket, the blanket shall be placed in lieu of mulch and mulch tackifier. 7. PRIOR TO FINAL ACCEPTANCE A. Partial Acceptance shall be in accordance with subsection 107.25 (d) and 208.10 At the Partial Acceptance of the project, it shall be determined by the SWMP Administrator and the Engineer which temporary BMPs/Control Measures shall remain until 70% reestablishment or which shall be removed. B. At the end of the project, all ditch checks shall either consist of temporary erosion logs (or equivalent) or permanent rip -rap. 8. NARRATIVES: A. ADDITIONAL BMPS/CONTROL MEASURES AND NARRATIVES: BMP/Control Measure details and narratives not covered by the SWMP or Standard Plan M-208, M-216 shall be added to the SWMP notebook by the SWMP Administrator. BMP Matrix: 1. M -Standards have been included along with standard BMP narratives. If a Non -Standard BMP will be used or the standard narrative does not apply, the SWMP Administrator shall write a Non -Standard BMP narrative, place an "X" in the column and complete a Non -Standard BMP Specification and Narrative for the SWMP notebook. 2. The SWMP Administrator shall place an "X" in the column In Use on Site when the BMP/Control Measure has been installed. 3. Place an "X" in the column BMP/Control Measure to be located by SWMP Administrator if the SWMP Administrator shall locate the BMP/Control Measure during construction. These BMP/Control Measures are not currently located on SWMP Plans but are anticipated to be used during construction (i.e. Vehicle Tracking Pad, Batch Plants, etc.). The SWMP Administrator shall locate these prior to or during construction and reflect on SWMP Map. 4. Place an "X" in the column Installation BMP/Control Measure Pre -Construction if the BMP/Control Measure is to be installed prior to construction activity. Print Dote:12/3/2018 File Nome: 08-21200ENV_G-07-B-SWMP NARRATIVE-ENVI.dgn Horiz. Scale: As Noted Vert. Scale: As Noted Unit Information: Unit Lender: Initials ITS HYDRAU-TECH, INC. ENGINEERING AND SOFTWARE 363 w. DRAKE RD. SUITE 3B FORT COLLINS, CO 80526 PHONE (970) 223-3964 Sheet Revisions Dote: Comments Init. Colorado Department of Transportation 202 Centennial Street Glenwood Springs, CO 81601 Phone: 970-945-8187 FAX: 970-947-5133 Region 3 Glenwood Residency AMK As Constructed No Revisions: CATTLE CREEK SH 82 MM 7.909 SWMP NARRATIVE 2 Project No./Code NHPP 0821-107 Revised: Designer: AM Void: Detoiler: BS Structure Numbers G -07-B 21200 Sheet Subset: ENVI Subset Sheets: E02 of E08 Sheet Number STRUCTURAL BMPs/Control Measures that may be potentially used on the project for erosion and sediment control; practices may include, but are not limited to: M-STANDARD/NON- STANDARD u IN USE ON SITE BMP/CONTROL MEASURE TO BE LOCATED BY SWMP ADMINISTRATOR INSTALLATION BMP/CONTROL MEASURE PRE -CONSTRUCTION BMP/CONTROL MEASURE PHASING APPLICATION, BMP/CONTROL MEASURE NARRATIVE FIRST/INITIAL CONSTRUCTION ACTIVITIES INTERIM CONSTRUCTION ACTIVITIES PERMANENT STABILIZATION PROTECTION OF EXISTING WETLANDS Fence (plastic) and erosion logs Fence (plastic) shall be placed in combination with erosion logs to prevent encroachment of construction traffic and sediment into state waters prior to start of construction disturbances. Fence (plastic) shall be placed adjacent to the wetlands; erosion logs shall be placed between the plastic fence and disturbance area. Logs shall be placed to direct flows away from or filter water running into wetlands from disturbance areas. N/A X X X X PROTECTION OF EXISTING TREES/LANDSCAPING Fence (plastic) Fence (plastic) shall be used in areas indicated in the plans to prevent encroachment of construction traffic and sediment for the protection of mature trees and/or existing landscaping prior to start of construction disturbances. N/A X X CHECK DAM/DITCH CHECK Erosion log, silt berm, silt dike, rock check dam Placed in ditches immediately upon completion of ditch grading to reduce velocity of runoff in ditch. For existing ditches, place prior to start of construction disturbances. M-208 X X TYPE R AND TYPE 16 INLET PROTECTION Storm drain inlet protection (Type 1,2 and 3) Placed prior to construction disturbances as detailed in M-208-1, to protect existing inlets or immediately upon completion of new inlets to prevent sediment from entering the inlet throughout construction. M-208 X X CULVERT INLET/OUTLET PROTECTION Erosion logs, aggregate bags Placed at mouth of culvert inlets and over top of culvert at inlet and outlet where disturbance may be occurring adjacent to pipe to prevent sediment laden water from entering pipe or drainage. Place prior to start of construction disturbances. M-208 X X TYPE C, TYPE D AND TYPE 13 PROTECTION Erosion Togs, aggregate bags, erosion bales Placed around inlet grate or slope and ditch paving to prevent sediment from entering inlet. Place prior to start of construction disturbances. M-208 X X STOCKPILE PROTECTION Temporary berm, erosion logs, aggregate bags* Placed within specified distance, in accordance with subsection 208.06, from toe to contain sediment around stockpile. *Aggregate bags are easily moved and replaced for access during the work day. Place prior to start of stock pile, increase control as stock pile increases size. M-208 X X TOE OF FILL PROTECTION Erosion logs, temporary berm, silt fence, topsoil windrow* Place prior to slope/embankment work to capture sediment and protect and delineate undisturbed areas. *Can be used to stockpile topsoil for salvage. M-208 X X X PERIMETER CONTROL Erosion logs, silt fence, temporary berm, topsoil windrow* Placed prior to construction commencing to address potential run-on water from off site, and to divert around disturbed area. *Can be used to stockpile topsoil for salvage. M-208 X X X SEDIMENT CONTROL/ SLOPE CONTROL Silt fence, erosion logs Placed on the contour of a slope to contain and slow down construction runoff. Place prior to start of construction disturbances. M-208 X X X TEMPORARY SEDIMENT TRAP (SWMP Administrator shall add locations to SWMP site maps) Used to capture sediment laden runoff from disturbed areas < 5 acres during construction. Place prior to start of construction disturbances. M-208 X X X PERMANENT SEDIMENT BASIN Extended detention basin or other Permanent Water Quality features Constructed early in project, prior to storm sewer/ditches to capture storm flow as a temporary sediment trap. Outlet structure shall be modified for contaminants of construction runoff a non -standard detail is needed. N/A X X EMBANKMENT PROTECTION OR TEMPORARY SLOPE DRAIN Placed as a conduit or chute to drain runoff down slope and to prevent erosion of slope. M-208 X Print Dote:12/3/2018 C) �) =Detoiler: Q Sheet Revisions Colorado Department of Transportation As Constructed CATTLE CREEK SH 82 MM 7.909 SWMP NARRATIVE 3 Project No./Code 1 File Nome: 08-21200ENV_G-07-B-SWMP NARRATIVE-ENVI.dgn Dote: Comments Init. NHPP 0821-107 No Revisions: Horiz. Scole: As Noted Vert. Scale: As Noted A C D Cr T © 202 Centennial Street CO Glenwood Springs, CO 81601 . Phone: 970-945-8187 FAX: 970-947-5133 Unit Information: Unit Leader: Initials Revised: Designer: AM Structure G-07-B 21200 CIT/ 363 w. DRAKE RD. HYDRAU-TECH, INC. SUITE 36 ENGINEERING AND SOFTWARE FORT COU INS, 3- 80526 PHONE (970) 223-396a BS Numbers �� Region 3 Glenwood ResidencyAMK g Void: Sheet Number Sheet Subset: ENVI Subset Sheets: E03 of E08 OUTLET PROTECTION Riprap, or approved other Material placed as energy dissipater to prevent erosion at outlet structure. N/A X X CONCRETE WASHOUT In -ground or fabricated Construction control, used for waste management of concrete and concrete equipment cleaning. Place prior to start of concrete activities. M-208 X X X VEHICLE TRACKING PAD Source control, placed to prevent tracking of sediment from disturbed area to offsite surface. Place prior to start of construction disturbances. M-208 X X X SWEEPING Source control, used to remove sediment tracked onto paved surfaces and to prevent sediment from entering drainage system. Sweep daily and at the end of the construction shift as needed. Kick brooms shall not be permitted. N/A X X X DEWATERING (Contractor is responsible for obtaining a permit from Colorado Department of Health and Environment.) Shall be done in such a manner to prevent potential pollutants from entering state waters. N/A X X X TEMPORARY STREAM CROSSING (SWMP Administrator shall add locations to SWMP site maps) Constructed over stream or drainage to prevent discharge of pollutants from construction equipment into water. N/A X X CLEAN WATER DIVERSION Placed to divert clean surface or ground water around disturbance area to prevent it from mixing with construction runoff. N/A X X X OTHER NON-STRUCTURAL BMPs/Control Measures that may be potentially used on the project for erosion and sediment control; practices may include, but are not limited to: Erosion control devices are used to limit the amount of soil loss on site. Sediment control devices are designed to capture sediment on the project site. Construction controls are BMPs/Control Measures related to construction access and staging. BMP/Control Measure locations are indicated on the SWMP site map. w a w Z BMP/CONTROL MEASURE PHASING APPLICATION, BMP/CONTROL MEASURE • NARRATIVE Q Z Q y C C H Vf p �++ h Z H 3 W 1. O in le p W H Q Z z U— 0 0 o d CCI a m 0 til Z W p O Q J o y z 1- z Z Q O d ce a m a JZ ~ tr)O z M> v, Z U u- 0 a U Z — Wce > Z - Z Q O a U FZ z O Z Q Q N F2 CO o_ 1- i VEGETATIVE BUFFER STRIP Fence (plastic) Filter sediment laden runoff from disturbance area. Area to be identified on SWMP prior to construction starting. ilb N/A X X X LANDFORM (SWMP Administrator shall add locations to SWMP site maps) Existing landforms may be used as a BMP/Control Measure if they prevent sediment from entering or leaving the disturbance area. If a landform directs flow of water to a concentrated outfall point, the outfall point shall be protected to prevent erosion. Area to be identified on SWMP prior to construction starting. N/A X X TOPSOIL MANAGEMENT STOCKPILE/SALVAGE Windrow or stockpile Prior to embankment work commencing, existing topsoil shall be scraped to a depth of 4 inches, and placed in stockpiles or windrows. Upon completion of slope work/final grading (less 4 inches), topsoil shall be evenly distributed over embankment to a depth of 4 inches. N/A X X X SURFACE ROUGHENING / GRADING TECHNIQUES Blading, Backhoe, Dozing, Combination Loader Temporary stabilization of disturbance and to minimize wind and erosion. N/A X X SEEDING (TEMPORARY) Temporary stabilization used for over -wintering of disturbance or used to control erosion for areas scheduled for future construction. N/A X BONDED FIBER MATRIX/HYDRAULIC MULCH Not to be used in areas of concentrated flows, i.e. ditch lines. To be used in combination with surface roughening for temporary stabilization of disturbed soils, when work is temporarily halted and as approved by the Engineer. May be used as surface cover for temporary topsoil stockpiles. N/A X Print Dote:12/3/2018 =CDOT �) =Detoiler: Q Sheet Revisions Colorado Department of Transportation As Constructed CATTLE CREEK SH 82 MM 7.909 SWMP NARRATIVE 4 Project No./Code 1 File Nome: 08-21200ENV_G-07-B-SWMP NARRATIVE-ENVI.dgn Dote: Comments Init. NHPP 0821-107 No Revisions: Horiz. Scole: As Noted Vert. Scale: As Noted © 202 Centennial Street CO Glenwood Springs, CO 81601 Phone: 970-945-8187 FAX: 970-947-5133 Unit Information: Unit Leader: Initials Revised: Designer: AM Structure G -07-B 21200 CIT/ 363 w. DRAKE RD. HYDRAU-TECH, INC. SUITE 36 ENGINEERING AND SOFTWARE FORT COLLINS, CO 80526 PHNE (970) 223-3964 O BS Numbers ��. Re Ion 3 Glenwood Residenc AMK g y Void: Sheet Number Sheet Subset: ENVI Subset Sheets: E04 of E08 MULCH/MULCH TACKIFIER Temporary or Final Stabilization placed as a surface cover for erosion control and or seeding establishment. To be installed as temporary surface cover when work is temporarily halted and as approved by the Engineer. N/A X X SPRAY-ON MULCH BLANKET (Not to be used in areas of concentrated flows, i.e. ditch Tines.) Temporary or Final Stabilization placed as a surface cover for erosion control and or seeding establishment. To be installed as temporary surface cover when work is temporarily halted and as approved by the Engineer. N/A X X X SEEDING PERMANENT (NATIVE) Final Stabilization of disturbance and to reduce runoff and control erosion on disturbed areas. N/A X X SOIL RETENTION BLANKET (SRB) Final Stabilization of disturbance and to reduce runoff and control erosion on disturbed areas. M-216 X X X TURF REINFORCEMENT MAT (TRM) Final Stabilization of disturbance and to reduce runoff and control erosion on disturbed areas. Placed in channels or on slopes for erosion control, channel liner and seeding establishment. M-216 X X OTHER N/A 9. TABULATION OF STORMWATER QUANTITIES Pay Item Description Pay Initial Interim Permanent *Total A. BMP/Control Measure sediment removal and disposal shall be paid for as: 208 Removal and Unit Const. Const. Stabilization Quantity Disposal of Sediment (Equipment) and 208 Removal and Disposal of Sediment (Labor). All other BMP/Control Measure maintenance shall be included in the cost of the BMP/Control Measure. 208-00103 Removal and Disposal of Sediment (Labor) Hour 20 20 B. It is estimated that 40 hours of labor, blading (100-150 horsepower), dozing (100-150 horsepower), combination loader (100-150 horsepower) and/or backhoe (100-150 horsepower) may be 208-00105 Removal and Disposal of Sediment (Equipment) Hour 20 20 required for miscellaneous erosion control work as directed by the Engineer. Work shall be paid 208-00107 Removal of Trash Hour 8 8 for as: 203 Laborer. This quantity has been tabulated in the general notes. 212-00006 Seeding (Native) Acre 0.37 0.37 C. Establishment of seeded areas shall be for as: 212 Seeding (native) and 212 Seeding 212-00028 Seeding (Wetlands) Acre 0.03 0.03 paid (wetlands). This shall include mowing, weed control, reseeding/mulch/tackifier. 212-00032 Soil Conditioning Acre 0.40 0.40 213-00012 Spray-on Mulch Blanket Acre 0.37 0.37 Pay Item Description Pay Unit Initial Interim Permanent *Total 216-00201 Soil Retention Blanket (Straw/Coconut) (Biodegradable Class 1) SY 145.2 145.2 Const. Const. Stabilization Quantity 217-00020 Herbicide Treatment Hour 10 10 203-01594 Combination Loader Hour 20 20 607-11525 Fence LF 780 780 (Plastic) 203-02330 Laborer Hour 40 40 700-70380 Erosion Control FA 1 1 208-00002 Erosion Log Type 1 (12 inch) LF 220 220 208-00035 Aggregate Bag LF 400 400 *It is anticipated that additional BMPs/Control Measures and BMP/Control Measure quantities not shown on the 208-00041 Rock Check Dam Each 1 1 SWMP Site Maps shall be required on the project for unforeseen conditions and replacement of items that are beyond their useful service life, see subsection 208.03 and 208.04. Quantities for all BMPs/Control Measures shown 208-00046 Pre-fabricated Concrete Washout Structure Each 2 2 above are estimated and have been increased for unforeseen conditions and normal BMP/Control Measure life expectancy. Quantities shall be adjusted according to the conditions encountered in the field as directed and 208-00070 Vehicle Tracking Pad Each 2 2 approved by the Engineer. Payment shall be for the actual work completed and material used. Print Date:12/3/2018 O Q O Q Sheet Revisions Colorado Department of Transportation As Constructed CATTLE CREEK SH 82 MM 7.909 SWMP NARRATIVE 5 Project No./Code 1 File Name: 08-21200ENV_G-07-B-SWMP NARRATIVE-ENVI.dgn Date: Comments Init. No Revisions: NHPP 0821-107 Horiz. Scale: As Noted Vert. Scale: As Noted AC D O T © 202 Centennial Street CO Glenwood Springs, CO 81601 Phone: 970-945-8187 FAX: 970-947-5133 Unit Information: Unit Leader: Initials Revised:Designer: AM Structure G-07-B 21200 ®� 363 W. DRAKE RU. HYDRAU-TECH, INC. SUITE 38 ENGINEERING AND SOFTWARE FORT COLLINS. co 80526 PHONE (970) 223-3984 Detoiler• BS Numbers Region 3 Glenwood ResidencyAMK Gj Sheet Number Void: Sheet Subset: ENVI Subset Sheets: E05 of E08 10. BIOLOGIC IMPACTS A. ENVIRONMENTAL IMPACTS: 1. Wetland Impacts: YES 2. Stream Impacts: YES 3. Threatened and Endangered Species: YES During culvert construction and repair, prevent increases in sediment being deposited into the stream channel that would impact water quality in downstream habitats, especially in the Roaring Fork River. In -stream work will be conducted from August 1st - September 30th to minimize turbidity downstream for spawning fish in the Roaring Fork. Minimize and/or eliminate work within wetland areas, use mats to decrease impacts to wetlands if practicable. Keep all staging areas to previously disturbed sites, minimize impacts to wetland and riparian vegetation. Vegetation Removal will be conducted after August 31st and before April 1st, to prevent impacts to migratory birds. 11. Notes A. ECM (or SWMP Administrator For Construction or Erosion Control Inspector) is included in the cost of the work. Print Date:12/3/2018 File Name: 08-21200ENV_G-07-B-SWMP NARRATIVE-ENVI.dgn Horiz. Scale: As Noted Vert. Scale: As Noted Unit Information: Unit Leader: Initials 63 3 W. ORANE RO. HYDRAU-TECH, INC. SUITE 38 ENGINEERING AND SOFTWARE FORT COLLINS, CO 80526 PHONE (970) 223-3984 Sheet Revisions Date: Comments Init. Colorado Department of Transportation 202 Centennial Street Glenwood Springs, CO 81601 Phone: 970-945-8187 FAX: 970-947-5133 Region 3 Glenwood Residency AMK As Constructed No Revisions: CATTLE CREEK SH 82 MM 7.909 SWMP NARRATIVE 6 Project No./Code NHPP 0821-107 Revised: Designer: Void: Detoiler: AM Structure Numbers BS G -07-B 21200 Sheet Subset: ENVI Subset Sheets: E06 of E08 Sheet Number 1 PRIVATE PARCEL SLIVER ! RFTA ROW PLASTIC FENCE 175 LF (INITIAL/INTERIM) TEMPORARY EASEMENT I 1 TE -9 PROPOSED CONSTRUCTION ENTRANCE AND o ACCESS ROUTE r z'ILL RESET GUARDRAIL TYPE 3 (50 FT) PLASTIC FENCE 145 LF (INITIAL/INTERIM) PROPOSED STAGING AREA (INITIAL/INTERIM) 11 ECI< DA 40 FT TOTAL (INITIAL/INTERIM) z IN S U) 0 0 0 z W J 0 0 EXISTING GUARDRAIL EXTENDS APPROX. 515' TO THE NORTH OF G -07-B AND 300' TO THE SOUTH. PROPOSED CONSTRUCTION ENTRANCE AND ACCESS ROUTE 0 (.0 z 0 0 N 0 S 0 z m z 0 00 PLASTIC FENCE 250 LF (INITIAL/INTERIM) SEEDING (NATIVE), SOIL CONDITIONING, SPRAY -ON MULCH BLANKET TEMPORARY EASEMENT TE-8� SEEDING (NATIVE), SOIL CONDITIONING, SPRAY -ON MULCH BLANKET It + +- RESET FENCE (122 LF) - PLASTIC FENCE 135 LF (INITIAL/INTERIM) 401 PROPOSED STAGING AREA (INITIAL/INTERIM) EXISTING FENCE (LOCATION APPROX.) EROSION LOG 60 LF RESET FENCE (INITIAL/INTERIM) (104 LF) m pieti **********Nek EROSION LOG 60 LF (INITIAL/INTERIM) vel LIMITS OF DISTURBED AREA (0.23 AC) TEMPORARY EASEMENT TE -10 1 Pt L�3L EXISTING FENCE (LOCATION APPROX.) t Z03) IL 00 EROSION LOG 100 LF (INITIAL/INTERIM) •• TEMPORARY ..-1 .ASEMENT I TE -11 PL-ASTIC FENCE 75 LF (INITIkuL/INTERIM) Print Date:12/3/2018 File Name: G -07-B ENVI_INITIAL.dgn Horiz. Scale: As Noted Vert. Scale: As Noted Unit Information Unit Leader Initials HYDRAU-TECH, INC. SUITE 35363 W. DRAKE RD. ENGINEERING AND SOFTWARE FORT COLLINS, CO 80526 PHONE (970) 223-3984 Sheet Revisions Comments Init. Colorado Department of Transportation 202 Centennial Street Glenwood Springs, CO 81601 Phone: 970-945-8187 FAX: 970-947-5133 Region 3 Glenwood Residency AMK LAS Constructed Revisions: vised: id: x o' 20' 40' NOTES: 1. BMP LOCATIONS ARE APPROXIMATE. 2. BMPS ARE NOT SHOWN TO SCALE. 80' 3. ALL AREAS OF TEMPORARY WETLAND IMPACTS SHALL BE PROTECTED DURING CONSTRUCTION AND RESEEDED WITH WETLAND MIX, SOIL CONDITIONING, AND SOIL RETENTION BLANKETS. SEE TEMPORARY WETLAND PROTECTION (SHEET E08). DETAIL 4. ALL AREAS FOR SEEDING (WETLANDS), SOIL CONDITIONING SHALL BE PROTECTED AFTER CONSTRUCTION. SEE TEMPORARY WETLAND PROTECTION DETAIL (SHEET E08). LEGEND + T + ■ 1 LDA PF PROPOSED STAGING AREA/ CONSTRUCTION ACCESS ROUTE SEEDING (NATIVE), SOIL CONDITIONING, SPRAY -ON MULCH BLANKET (0.37 AC) SEEDING (WETLANDS), SOIL CONDITIONING (0.03 AC) APPROX. LOCATION OF HERBICIDE TREATMENT (0.04 AC) TEMPORARY WETLAND IMPACTS (643 SQ FT, 0.015 AC) PERMANENT WETLAND IMPACTS (261 SQ FT, 0.006 AC) LIMITS OF DISTURBED AREA PLASTIC FENCE EROSION LOG (12 INCH) x x— RESET FENCE DELINEATED WETLANDS TEMPORARY EASEMENT SURFACE FLOW un,4r-w(oorod ROCK CHECK DAM RIPRAP (24 INCH) CATTLE CREEK SH 82 MM 7.909 SWMP SITE MAP Project No./Code NHPP 0821-107 Designer: AM Detailer: BS StructureNumbers G -07-B 21200 Sheet Subset: ENVI Subset Sheets: E07 of E08 Sheet Number 12" STRAW (WEED FREE) w '0 '0 '0 w w w w '0 '0 w w w w w '0 w w * * * * * * * * * * * * * * * * * * '8 '8 '8 w w w * / ' ' ' w w w '8 '8 '8 w / EXISTING WETLANDS SOIL RETENTION BLANKET (CLASS 1) TEMPORARY WETLAND PROTECTION DETAIL N.T.S. TEMPORARY WETLAND IMPACTS NOTES: 1. ALL WILLOWS WITHIN TEMPORARY WETLAND IMPACTS AREAS SHALL BE CUT DOWN TO 4 INCHES PRIOR TO PLACEMENT OF MAT. 2. ALL COST FOR LABOR, STRAW AND OTHER MATERIALS SHALL BE INCLUDED IN THE SOIL RETENTION BLANKET (STRAW/COCONUT) (216-00201) PAY ITEM. w EXISTING GRADE Print Date:12/3/2018 File Name: G-07-BHYDR Temporary Wetland Protection.dgn Horiz. Scale:As Noted Vert. Scale: As Noted Unit Information Unit Leader Initials 363 W. DRAKE RD. HYDRAU-TECH, INC. SUITE 35 ENGINEERING AND SOFTWARE FORT COLLINS, CO 80526 PHONE (970) 223-3984 Sheet Revisions Date:: Comments Init. Colorado Department of Transportation Region 3 202 Centennial Street Glenwood Springs, CO 81601 Phone: 970-945-8187 FAX: 970-947-5133 Glenwood Residency AMK r____As Constructed No Revisions: Revised: Void: TEMPORARY WETLAND PROTECTION DETAIL Project No./Code NHPP 0821-107 Designer: AM Detailer: BS Sheet Subset: ENVI Structure Numbers Subset Sheets: E08 of E08 G -07-B 21200 Sheet Number • HYDRAU-TECH, INC. ENGINEERING & SOFTWARE ATTACHMENT 1 363 W. Drake Road, Suite 3B Fort Collins, Colorado 80526 Phone: (970) 223-3984 Fax: (970) 223-8484 7 TEMPORARY EASEMENT N V / 7 I N7 ��� \ I I 1 \ I I \ —�" �V --- I I ----- --- Olo9 \7 \\ I ��-- -----� 7 �7 I j N / / / / / / /- 0 0 -- 5109 ------ -- /// / / / / // 1 1 // // /7/ 1 1 I / / / 1 II / / I 1 1 1 /� I I I / \ I I I I \ 1 TEMPORARY I I I I \ I EASEMENT \ \ 1 0\ 1 1 \ \ \ \ r -_— 11 \ \ 1 1 1 I l 1 w 1 I \ v ,,, 0 1 \ \ \\ \7 I - -- \ �STINWA� \ \ \ 7 r -- 1 RIGHT OFa I -) I i / 11 / -----p\— :NNN-__—__— — a' z 5' 1 I / I 1 I I( --\ 3 \ \� / 1 1 1 1 - 1 1 I/ 1 1 1 1 I � 1 I I 1 1 1 I I �N ill 1 1 I I I 1 I NN I \ / I®J 1 / EXISTING STRUCTURE G -07-B (LOCATION APPROXIMATE) STATE HIGHWAY 82 MILE MARKER 7.909 ( —/// / / // % —_�/ / // 7 09 j// � ./�--- -7 PROPOSED CONCRETE APRON, TOEWALL, AND SLAB 09 10' --1 DRAFT SHEET FOR INFORMATION ONLY Print Date:11/14/2018 File Name: G-07-BHYDR_Upstream Site Plan.dgn Horiz. Scale:As Noted Vert. Scale: As Noted Unit Information Unit Leader Initials 11363 W. 450 HYDRAU-TECH, INC. SUITE 35RAKE RD. ENGINEERING AND SOFTWARE FORT COLLINS, CO 80526 PHONE (970) 223-3984 Sheet Revisions te: Comments Init. Colorado Department of Transportation 202 Centennial Street Glenwood Springs, CO 81601 Phone: 970-945-8187 FAX: 970-947-5133 Region 3 Glenwood Residency AMK As Constructed No Revisions: CATTLE CREEK SH 82 MM 7.909 FLOODPLAIN SITE PLAN 1 Project No./Code NHPP 0821-107 Revised: Designer: AM Void: Detailer: BS Structure Numbers G -07-B 21200 Sheet Subset: Subset Sheets: 01 of 06 Sheet Number DRAFT SHEET FOR INFORMATION ONLY CDOT ROW PRIVATE SLIVER PARCEL TEMPORARY EASEMENT ARTA ROW f --- /r------J— ,--- — RIPRAP — — (24 INCH) _ ----- ---- -- ----- /// ---------/---- — //_// — — — / / 7 / 7 / / 7 10' _ - B_XI-S-TING—STRUCTUREG��B— — — _ — — — (LOCATION_AP-PR IX)"MATE) _ _ — _ — _STATE HIGHWAY 82 ---- _ ---- — MILE MAA0J< R-7.909_- --- 6015 PROPOSED C13142 -7E -TE APRON,_ — — /TJaE-WACL, AND SLAB — — — — — 7 7 6010 `� —` 7 \\� I SOIL TR PRA�P I I // / — (24 INCH\ I 1/ C (TYP.)� I I � // �� 7 I I I �\ 7 \ III I / / 1 \ I I I I/ II I I 1 '1 IIIIII /— / I / / / / 1 r I / . / SOIL/RIPRAP / �/ I / (24/ INCH) _ — — — / // ----- --- _- — / / - — _---- _ — — — — — — — / / //—— — 0t09 1 ��� — ---- __--- _--- / // 7 / --- —A— —�— --- _---- _ -- / / / / --- --� -- -- - — — 6010 TEMPORARY EASEMENT 20' Print Date:11/14/2018 File Name: G-07-BHYDR_Downstream Site Plan.dgn Horiz. Scale:As Noted Vert. Scale: As Noted Unit Information Unit Leader Initials 11363 W. 450 HYDRAU-TECH, INC. SUITE 35RAKE RD. ENGINEERING AND SOFTWARE FORT COLLINS, CO 80526 PHONE (970) 223-3984 Sheet Revisions Comments Init. Colorado Department of Transportation 202 Centennial Street Glenwood Springs, CO 81601 Phone: 970-945-8187 FAX: 970-947-5133 Region 3 Glenwood Residency AMK As Constructed No Revisions: CATTLE CREEK SH 82 MM 7.909 FLOODPLAIN SITE PLAN 2 Project No./Code NHPP 0821-107 Revised: Designer: AM Void: Detailer: BS Structure Numbers G -07-B 21200 Sheet Subset: Subset Sheets: 02 of 06 Sheet Number DRAFT SHEET FOR INFORMATION ONLY 6015 6010 6005 6000 5995 SECTION A 6015 6010 6005 6000 5995 0' 5' PROPOSED CONCRETE APRON, TOEWALL, AND SLAB 2.5' 10' 0 Print Date: 11/14/2018 File Name: G-07-BHYDR Floodplain Sections 1.dgn Horiz. Scale:As Noted Vert. Scale: As Noted Unit Information Unit Leader Initials HYDRAU-TECH, INC. SUITE 35363 W. RAKE RD. ENGINEERING AND SOFTWARE FORT COLLINS, CO 80526 PHONE (970) 223-3984 Sheet Revisions to:: Comments Init. Colorado Department of Transportation 202 Centennial Street Glenwood Springs, CO 81601 Phone: 970-945-8187 FAX: 970-947-5133 Region 3 Glenwood Residency AMK As Constructed No Revisions: CATTLE CREEK SH 82 MM 7.909 FLOODPLAIN SECTIONS 1 Project No./Code NHPP 0821-107 Revised: Designer: AM Void: Detailer: BS Structure Numbers G -07-B 21200 Sheet Subset: Subset Sheets: 03 of 06 Sheet Number NATIVE --- ---- �� MATERIAL TO MATCH EXISTING GROUND EXISTING GROUND / i / u A 4 �� Q Q Q Q Q Q G "7-- 4 —4 SECTION A 6015 6010 6005 6000 5995 0' 5' PROPOSED CONCRETE APRON, TOEWALL, AND SLAB 2.5' 10' 0 Print Date: 11/14/2018 File Name: G-07-BHYDR Floodplain Sections 1.dgn Horiz. Scale:As Noted Vert. Scale: As Noted Unit Information Unit Leader Initials HYDRAU-TECH, INC. SUITE 35363 W. RAKE RD. ENGINEERING AND SOFTWARE FORT COLLINS, CO 80526 PHONE (970) 223-3984 Sheet Revisions to:: Comments Init. Colorado Department of Transportation 202 Centennial Street Glenwood Springs, CO 81601 Phone: 970-945-8187 FAX: 970-947-5133 Region 3 Glenwood Residency AMK As Constructed No Revisions: CATTLE CREEK SH 82 MM 7.909 FLOODPLAIN SECTIONS 1 Project No./Code NHPP 0821-107 Revised: Designer: AM Void: Detailer: BS Structure Numbers G -07-B 21200 Sheet Subset: Subset Sheets: 03 of 06 Sheet Number 6015 6010 6005 6000 6015 6010 6005 6000 SECTION B CUT ' EXISTING GROUND i ft2 ft2 ft2 PROPOSED 1 PROPOSED GROUND GROUND SECTION B SECTION C 0' 6015 6010 6005 6000 6015 6010 6005 6000 5' DRAFT SHEET FOR INFORMATION ONLY SECTION B CUT ' EXISTING GROUND NET APPROXIMATE CUT ft2 ft2 ft2 PROPOSED 1 7.0 -9.4 GROUND SECTION C 0' 6015 6010 6005 6000 6015 6010 6005 6000 5' DRAFT SHEET FOR INFORMATION ONLY SECTION B CUT ' I NET NET APPROXIMATE CUT ft2 ft2 ft2 yd3 16.4 7.0 -9.4 1.7 SECTION C CUT FILL NET NET APPROXIMATE CUT ft2 ft2 ft2 yd3 18.3 12.1 -6.2 1.1 2.5' 10' 0 Print Date:11/14/2018 File Name: G-07-BHYDR Floodplain Sections 2.dgn Horiz. Scale:As Noted Vert. Scale: As Noted Unit Information Unit Leader Initials HYDRAU-TECH, INC. SUITE 38363 W. RAKE RD. ENGINEERING AND SOFTWARE FORT COLLINS, CO 80526 PHONE (970) 223-3984 Sheet Revisions Date: Comments Init. Colorodo Department of Transportation 202 Centennial Street Glenwood Springs, CO 81601 Phone: 970-945-8187 FAX: 970-947-5133 Region 3 Glenwood Residency AMK As Constructed No Revisions: CATTLE CREEK SH 82 MM 7.909 FLOODPLAIN SECTIONS 2 Project No./Code NHPP 0821-107 Revised: Designer: Void: Detailer: AM Structure Numbers BS G -07-B 21200 Sheet Subset: Subset Sheets: 04 of 06 Sheet Number 6015 6010 6005 6000 6015 6010 6005 6000 SECTION D EXISTING GROUND PROPOSED GROUND SECTION E 6015 6010 6005 6000 6015 6010 6005 6000 DRAFT SHEET FOR INFORMATION ONLY o' 10' SECTION D CUT EXISTING GROUND NET NET APPROXI MATE CUT i PROPOSED ft2 y d3 GROUND SECTION D EXISTING GROUND PROPOSED GROUND SECTION E 6015 6010 6005 6000 6015 6010 6005 6000 DRAFT SHEET FOR INFORMATION ONLY o' 10' SECTION D CUT NET NET NET APPROXI MATE CUT ft2 ft2 ft2 y d3 10.3 2.2 -8.1 1.5 SECTION E CUT FILL NET NET APPROXI MATE CUT ft2 ft2 ft2 y d3 5.5 1.7 -3.7 0.7 5' 2.s' 0 Print Date: 11/14/2018 File Name: G-07-BHYDR Floodplain Sections 3.dgn Horiz. Scale:As Noted Vert. Scale: As Noted Unit Information Unit Leader Initials 363 W. DRAKE RD. HYDRAU-TECH, INC. SUITE 35 ENGINEERING AND SOFTWARE FORT COLLINS, CO 80526 PHONE (970) 223-3984 Sheet Revisions Dote: Comments Init. Colorado Department of Transportation 202 Centennial Street Glenwood Springs, CO 81601 Phone: 970-945-8187 FAX: 970-947-5133 r____As Constructed No Revisions: Revised: Region 3 Glenwood Residency AMK Void: CATTLE CREEK SH 82 MM 7.909 FLOODPLAIN SECTIONS 3 Project No./Code NHPP 0821-107 Designer: AM Detailer: BS Sheet Subset: Structure Numbers Subset Sheets: 05 of 06 G -07-B 21200 Sheet Number 6015 6010 6005 6000 6015 6010 6005 6000 SECTION F .............7— PROPOSED GROUND SECTION G E ISTING GROUND 6015 6010 6005 6000 a 5 1a' 5' 2.5' 0 6015 6010 6005 6000 DRAFT SHEET FOR INFORMATION ONLY SECTION F --------------- CUT FI!' EXISTING GROUND—\_ NET APPROXIMATE CUT ---..."4".>......\ _ -- — — PROPOSED 8.6 0.0 -8.6 GROUND 6015 6010 6005 6000 SECTION F .............7— PROPOSED GROUND SECTION G E ISTING GROUND 6015 6010 6005 6000 a 5 1a' 5' 2.5' 0 6015 6010 6005 6000 DRAFT SHEET FOR INFORMATION ONLY SECTION F --------------- CUT FI!' NET NET APPROXIMATE CUT ft2 ft2 ft2 yd3 8.6 0.0 -8.6 1.6 SECTION G CUT FILL NET NET APPROXIMATE CUT ft2 ft2 ft2 yd3 3.6 1.3 -2.2 0.4 Print Date: 11/14/2018 File Name: G-07-BHYDR Floodplain Sections 4.dgn Horiz. Scale:As Noted Vert. Scale: As Noted Unit Information Unit Leader Initials 363 W. DRAKE RD. HYDRAU-TECH, INC. SUITE 35 ENGINEERING AND SOFTWARE FORT COLLINS, CO 80526 PHONE (970) 223-3984 Sheet Revisions Date:: Comments Init. Colorado Department of Transportation 202 Centennial Street Glenwood Springs, CO 81601 Phone: 970-945-8187 FAX: 970-947-5133 r____As Constructed No Revisions: Revised: Region 3 Glenwood Residency AMK Void: CATTLE CREEK SH 82 MM 7.909 FLOODPLAIN SECTIONS 4 Project No./Code NHPP 0821-107 Designer: AM Detailer: BS Sheet Subset: Structure Numbers Subset Sheets: 06 of 06 G -07-B 21200 Sheet Number