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HomeMy WebLinkAbout1.0 ApplicationLawrence Singer and Lisa Singer 262L County Road 100 Carbondale, CO 8L623 720-220-8400 Lssinger@comcast.net July 9,2014 Glenn Hartmann Senior Planner Garfïeld County Community Development 108 8th Street, Suite 401 Glenwood Springs, CO 81601 RE: Singer Floodplain Permit (File No. FDPA'7974) Dear Glenn, Thank you for your completeness letter of July 3,2014 regarding the application. As per your request, we are submitting these additional items and documentation: 1. The Revised Land Use Change Permit Application Form reflects my wife Lisa as joint owner of the property with Lawrence Singer and is signed by her. In additíon, Sopris Engineering is identified as our Representative. 2. Letter of Authorization Representative. identiffing Spris Engineering LLC as our 3. Ownership of mineral rights belong to the property ovvners, Lawrence Singer and Lisa Singer, 2621 Counfy Road 100, Carbondale, CO 81623. This was researched with Title Examiner Arni Simonsen of Pitkin County Title, Inc.o 601 East Hopklns, 3'd Floor, Aspen, CO 816110 phone 970'925'1766, He described that typically mineral rights are typically conveyed off or reserved by the original owner. Mineral rights run with the property or are severed. When severed there is a record and the title company takes exception. Subject properfy has no exception to any severed mineral rights. Title Policy No. OP-6-CO1045-3629154, and File No. PCT24001W2 addresses the mineral rights to the property in Schedule B, #9 and is appended hereto. 4. - 6. In order to present all information in one place we are submitting a Revised Application Narrative. This will prevent confusion that may result from having information in both the origiúal narrative and an addendum. Included in the Revised Narrative we have addressed specific information requested in Section 4-109 (C), Section 3-301, Section 3-301(CX2) and Section 4-203, Additionally, the Revised Table of Contents includes additional support documents. Lawrence Singer and Lisa Singer 2621Cowty Road 100 Carbondale, CO 81623 720-220-8400 Lssinger@comcast.net Please call or email Sopris Engineering and I with any specific questions you or your staff may have. Once this Floodplain Permit is issued, a complete set of Construction Drawings will be prepared. We hope we have addressed all completeness topics in order to proceed towards public review and Directors Decision. Thank you and your staff for your time and consideration. Sincerely Lawrence Singer !-is¿ S'Xiet Lisa Singer 2 JULY T6,2OI4 REVISED APPLICATION FOR A DEVELOPMENT PERMIT FOR CONSTRUCTION ACTIVITIES PROPOSED \MITHIN THE FLOOD FRINGE Applicant: Lawrence Singer and Lisa Singer 2621CP.l00, Carbondale, Colorado. 81 623 PREVIOUSLY SUBMITTED DOCUMENTS The following documents were submitted in the original application (0611812014) and remain unchanged. Therefore are not included as hard copies in this revised application package. All items are included on accompanying data disc. I. il. ru. ry. V. VI. vII. VIII. IX. X, XI. xII. Re-submitted Payment Agreement Form Re-submitted Warranty Deed confi rming Applicant' s Ownership Re-submitted List of Property Owners within 200 feet of parcel Pre-Application Conference Summary Letter of May 7,2014 Re-submitted Vicinity Map of 3 mile radius of subject property Site Plan showing Existing and Proposed Improvements Holy Cross Energy Consent Letter to Relinquish Easement Re-submitted JULY 15,2OI4 REVISED APPLICATION FOR A DEVELOPMENT PERMIT FOR CONSTRUCTION ACTIVITIES PROPOSED WITHIN THE FLOOD FRINGE ASSOCIATED WITH ACCESSORY IMPROVEMENTS ON LOT 2, RIES EXEMPTION BEING WITHIN THE IOO.YEAR F'LOOD PLAIN-FLOOD FRINGE Representatives: Application Report: Sopris EngineeringLLC 502 Main Street, Suite A3 Carbondale, Colorado. 81623 Paul Rutledge Design Engineer Yancy Nichol, PE Project Manager Applicant: Lawrence Singer and Lisa Singer 2621CP.r00, Carbondale, Colorado. 81623 I. il. m. IV. V. VI. VII. VM IX. X. XI. xII. Applicant: Lawrence Singer and Lisa Singer SE Job No. 14097.01 July 15,2014 Page2 APPLICATION FOR A DEVELOPMENT PERMIT TABLE OF CONTENTS Revi sed Application Narrative Revised Application Form and Payment Agreement Form Letter of Authorization for Sopris Engineering LLC 'Warranty Deed confirming Applicant' s Ownership Applicant's Title Policy identifuing Mineral Rights List of Property Owners within 200 feet of parcel Pre-Application Conference Summary Letter of May 7 ,2014 Completeness Letter of July 3,2014 Vicinity Map of 3 mile radius of subject property Site Plan showing Existing and Proposed Improvements Holy Cross Energy Consent Letter to Relinquish Easement All Service Septic Design XM. APPENDICES The following documents are appended hereto: Appendix '( ^)' - Exhibit A - Vicinity Map (lof 2) Site Plan (2 of 2) Appendix 6¿8" - FEMA Elevation Certificate for Construction (RV B arnlGreenhouse only) Appendix '(C)' -Names and addresses of all property owners within 200 feet of subject property Applicant: Lawrence Singer and Lisa Singer SE Job No. 14097.01 JuIy 15,2014 Page 3 APPLICATION F'OR A DEVELOPMENT PERMIT FOR ACCESSORY IMPROVEMENTS TO BE CONSTRUCTED ON A PARCEL OF LAND LOCATED IN THE FLOOD FRINGE WITHIN THE IOO-YEAR FLOOD PLAIN Property Owner Lawrence Singer and Lisa Singer 262r CR100, Carbondale, Colorado. 81623 Property Location: Request for Approval:(a) A Development Permit for proposed construction within Lot 2 that is located within the delineated flood fringe (Zone A-3). The area of construction activities is associated with the proposed accessory improvements on this residential lot. (b) Approval of construction in accordance with Garfield County's Regulations regarding Development Permits and work in a flood plain. SUMMARY OF REQUESTS The applicant is requesting a Development Permit in order to construct the proposed improvements within the delineated flood fringe on Lot 2, of the Ries F.xemption. The work in the floodplain will involve the construction of an approximate2,2}} ft2 RV Barn/Greenhouse structure, a replacement Onsite'Wastewater Treatment System (OWTS), utility services, driveway expansion and associated landscape grading within the proposed accessory improvernetrt ur"as. All work in the floodplain will be performed within the limits of the established FEMA flood fringe or the ZoneB 500-year floodplain and above the existing river channel top of bank. No work is proposed within the established FEMA floodway. The finish floor grade of the proposed RV Barn/Greenhouse will be one foot or more above the 10O-year Base Flood Elevation(BFE). The area will be grubbed and excavated as needed for foundation construction and placement of structural fill materials typical for accessory building construction. The proposed construction does not involve the placement of any structures or materials that will adveisel-^y affect the existing flood hydrology or impact any sensitive area. Utility trenches will be restored to original grade, compacted and re-vegetated. No construction or other work activities will be performed in the floodway therefore the existing floodway will be maintained with O-rise of flood levels and velocities. All disturbed area on the site and within the flood fringe area will be stabilized and re-vegetated. Best management erosion control practices shall be in place and maintained as needed. The subject property is located in section 31, Township 7 South, Range 87 V/est of the 6th P.M. in Garfield County at Lot 2, of the Ries Exemption. Applicant: Lawrence Singer and Lisa Singer SE Job No. 14097.01 July 15,2014 Page 4 The site elevations and the FEMA FIRM mapping elevations on the attached site plan and the attached construction flood certificate are referenced to the 1929 vertical datum in relationship to the cunent published FIRM maP. The proposed development within the flood fringe will occur to the South and outside of the floodway as defined by the established FEMA Floodplain line through the subject property. The 1QQ-year BFE at the most upstream point of the proposed RV Barn/Greenhouse is at an approximate elevation of 6254.64. This single accessory structure development will result in finish floor grades constructed at least one foot above the BFE, resulting in a finished floor elevation of 6255.64 or greater. The floodplain information has been derived from the FEMA FIRM map, Community-Panel Number; 080205 1880 B, Revised 11311986. The Regulations with respect to the floodplain require a Floodplain Development Permit for improvements and uses within the flood plain in accordance with Section4-109 of the Land Use and Development Code. The majority of the Applicant's proposed construction and uses are inside of the flood fringe (ZoneA-3). The construction activities will be completed with appropriate flood proof construction including the stabilization of any placed fill as applicable by definition under the Floodplain Regulations Section 3-301. OVERLAY DISTRICT REGULATIONS Qo^finn ?-?ô1 ET ¡-\A DPLAIN rì\/ljpT ^v P IAT TT A rì'NTq All proposed improvements and uses described, in the summary of requests above, are permitted in aıcordance with Table 3-301 Floodplain Overlay Use Restrictions Table. These specifically include construction of permanent structures, lawns, open areas, gatdens, driveways and other typical residential accessories. The accessory improvements also include underground utility services. Holy Cross Energy has consented to relinquish the Overhead Power Line Easement per letter dated l.y'1ay 12,2014. Also provided from Holy Cross Energy is the proposed plan for retirement of the overhead power lines and placement of a new HCE Pad Mount Transformer. Applicant will assume the costs to repair and improve piping of the Launsbury Ditch within the subject property. The existing splitter box that is currently malfunctioning will be relocated at the east side of the subject property. Proposed piping will allow inigation waters to be piped directly to the adjacent Lot 1 property. Water allotment to the subject property will flow to a buried holding tank on the east side of the subject property within the building envelope. Latetal ditches on the subject property will be abandoned to allow more consistent delivery of water to the surrounding land by an automated sprinkler system. The proposed piping may be modified in the field to accommodate existing trees. The proposed new OWTS tanks will be anchored and sealed to resist infiltration of flood or ground waters. Sewer piping will be encased as it crosses other utility pipes. Íh. ptopored new Soil Treatment Area (STA) will be mounded four feet above native grade with imported silty, slightly clayey sand. Fill for the mound system was tested by Kordzeil Applicant: Lawrence Singer and Lisa Singer SE Job No. 14097.01 July 15,2014 Page 5 Engineering and consists of llYo gravel, 48Yo sand, and 4lo/o fines with a description of sand, silty, slightly clayey. Placing the STA at least four feet higher than the BFE will insure that potêntiai elevated ground, storm or flood waters are not able to infiltrate the system. Likewise, ihe additional height of filtration and following the existing berm contour will prevent discharge from the OV/TS from entering the ground or surface waters. To insure no infiltration of ground or surface waters into the OV/TS, septic tanks will be ,r/ installed in accordance with manufacturers' recommendations and appropriately seam-sealed. Watertight concrete tanks with watertight ribbed PVC risers and sealed lids will be installed. Septic tanks wilt be anchored to provide buoyancy compensation during time of elevated ground *ut"r. All gravity and pressure pipes shall consist of specified materials and tested to be waterproof so that no water infiltrates the system. Pressurized effluent lines from the tanks to the S1A shatt consist of Class II HDPE pipe, which is continuous so there can be no connections and joints to fail. All joints required will be compression or appropriate threaded fittings. Waterproof electric lines will be buried in accordance with Holy Cross Energy and state code. "/All systems within the proposed structure will be raised at least one foot above the BFE to prevent contamination or erosion from potential limited floodwaters. Construction of the Greenhouse/RV storage structure will have the Lowest Floor one foot above the BFE. A Subsoil Study for Foundation Design was performed by H-P Geotech as Job No. ll4 230|and is attached. Specifi.cally the ground floor will be slab on grade, set with the finish floor one foot above the BFE. The foundation system will be spread footings bearing on the natural soils. Footings placed on undisturbed natural granular soils will be designed for allowable bearing pressure of 2,500 psf. Expected settlement will be 1 inch or less. Footings will have a minimum width of 16 inches for continuous walls and24 inches for isolated pads. These foundation specifications are typical for construction in this area to enable adequate resistance to hydrostatic pressure from ground water or minor flood andlot storm event conditions. Placement of the foundation footings will be at least 36 inches below BFE. Continuous foundation walls will be reinforced to resist laterul earth pressure. Existing topsoil wilt be removed so that the footing bearing level is extended down to relatively dense natural granular soils. Exposed soils in the footing area will be moistened and compacted. Footing areas will be dewatered prior to concrete placement. The natural on-site soils were determined to be suitable to support the Greenhouse/RV storage structure floor slab. To reduce the effects of some differential movement, floor slab will be separate from all bearing walls and columns with expansion joints which allow unrestricted mıvement. Floor slab control joints will be used to reduce damage due to shrinkage cracking. The proposed driveway expansion will improve maneuverability for the entrance and exit of vehiıles. Existing driveway elevation is near the BFE at 6255.00 feet and the auto court is elevated slightly above the BFE. Additional driveway gravel will be placed and graded to the Slab foundation structure at a minimum elevation of 6255.64 feet. Gravel driveways will provide attenuation of storm or flood waters via infiltration into the native soils. ú,. Applicant: Lawrence Singer and Lisa Singer SE Job No. 14097.01 July 15,2014 Page 6 The geotechnical engineer has determined that slab-on-grade construction for the proposed accessory building will not require an under-drain system. All fill materials placed around the final Lowest Floor, constructed one foot above BFE, will be compacted to at least 95o/o of maximum standard Proctor density at optimum moisture content' The proposed construction and minor placement of any fill associated with landscape improvements within the flood fringe will not affect BFE or cause adverse changes in flood patterns downstream. No geo hazards or wetlands have been identified on the developed site. No hydrologic condition has been identified that requires USACE determination or permitting. The applicable maps identify that the improvements are within the 1OO-year delineated flood fringe. The construction in the established flood fringe (Zone A3) of Lot 2 is for accessory/agricultural improvements only. The construction activities are limited to an approximat e 2,200 ft2 RV Barn/Greenhouse structure, a replacement OWTS, utility services, driveway expansion and associated landscape grading within the proposed accessory improvement areas. The proposed access and driveway will not be impacted by flooding. The proposed construction includes walls, placement of structural filI materials typical for accessory construction and the placement of fill associated w1th landscape improvements within the flood fringe only. Utility trenches will be restored to original grade, compacted and re-vegetated. All utility service improvements will be installed in sealed conduits The finished construction will be designed and constructed with ffirials are to flood damage. No construction activities are proposed that will restrict or otherwise adversely impact the current flood flow conditions. No storage or disposal of any hazardous materials is proposed within the floodplain. - DEVELO 1OO-YEAR This section of the Land Use and Development Code permits construction as discussed herein. Because a portion of the proposed improvements on the site is impacted by the 1OO-year flood plain, Applicants acknowledge and herein address the applicable review criteria associated with Sub-sections A, B and C and Table 4-102 considering Development In The 100-Year Floodplain to be granted by Decision. Applicant: Lawrence Singer and Lisa Singer SE Job No. 14097.01 July 15,2014 PageT Section 4-109(C) REVIEW CzuTERIA 1. Proposed improvements lie within an open field with no possibility of endangerment to life or property. Ample area allows for the flow of potential floodwaters. The lot is relatively flat and erosion should not be a factor. 2. The accessory RV storage/Greenhouse structure shall be built on a poured concrete slab at an elevafion one foot above the BFE. The associated grading will be constructed to deflect floodwater to its natural path. Existing earth berms exist on the south side of the site and on the adjacent parcel to the east. The proposed berm with installed OWTS components will connect these two existing berms and will maintain a consistent broad path for potential flood or storm waters. 3. The adjacent land to the west in Lot 1 of the Ries Exemption, down gradient of the proposed improvements, is avacant field and also within the 100 year floodplain fringe. The building envelope and improvements on Lot 1 are not in proximity to any storm or flood water flow from subject site. Additionally the large, well constructed Slough Ditch and Bannin gLateral would catch any floodwater flow to the west of subject site. Fill and landscaping materials placed near the western property line shall be compacted and stabilized with re-vegetation. Contents of the Greenhouse and storage barn shall be contained within the structure. 4. All proposed improvements are compatible with Floodplain Overlay Regulations 3-301. The proposed Greenhouse/RV storage structure will be accessory and agricultural with no human habitation. The proposed widened driveway will be above the BFE and gravel to allow absorption of water. Gardens, lawns, driveways are accessory to the single family home within the building envelope on the 3.0 acre parcel. The existing septic system on the proper"ty is failing. The existing leach field is in a moist area adjacent to Lot 1 Ries Exemption. The designed new OWTS will be sealed and able to resist the infiltration of flood waters. The OWTS mound drain field is proposed to be built up within the berm at seven feet, which will place the infiltrative area well above and outside the potential flood water conveyance path or potential backwater. 5. Access to the property for emergency vehicles does not change and will be enhanced. County Road 100 is the south border to the property, which allows easy access. The parcel is flat and proposed widening and expansion of the gravel driveway will allow a tum-around areaoff County Road 100. This will enhance everyday safety for vehicles needing to turn around and improve access to large emelgency vehicles. 6. Proposed improvements will decrease Applicant's reliance on goverìment services in times of emergency. Approval has been granted from Holy Cross Energy for the overhead power lines to be buried. This will result in the retirement of three poles, the overhead transformer, and overhead triplex. Total costs will be paid by applicant Applicant: Lawrence Singer and Lisa Singer SE Job No. 14097.01 July 15,2014 Page 8 and the new pad mount Transformer and meter will be easily accessible from County Road 100 for the utility company. The OWTS is being improved and upgraded. The property has a self-contained well for water. 7. The stream reach with the vicinity of the subject property lies within a broad floodplain area with scattered residential development, agricultural fields and vegetated areas with trees, shrubs and open grass areas. The subject property within the left bank flood fringe is well vegetated with minimal sloped terrain with established drainage paths and exiting ditches that will serve to drain and attenuate excess storm or flood waters. The driveway consists ofpervious gravel and all existing and proposed grades on the site are generally at or slightly below the BFE profile. The onsite soils are alluvial with high capacity for infiltration of surface water. Based on the site conditions summarized above, the height and velocities of potential backwater flood flows is minimal and is not expected to increase as a result of the proposed improvements. With respect to the extensive vegetation and shallow topography we do not expect any concern with wave action or erosion from receding flood backwater. Due to the large and relatively flat flood fringe arearelative to the floodway the rate of rise and potential for sediment transport is expected to be low and insignificant in terms of the overall width of the flood zones. Therefore we do not believe that the items in Section 4-109, C-7 are applicable to this project. B. No waterfront facility is applicable to the proposed improvements. 9. The delineated locations of the proposed site improvements have been determined to be appropriate based on the existing conditions with respect to survey topography. The location and design of the replacement OWTS will provide for improved treatment and protection of the system. The layout and proposed grading maintains drainage flow paths with respect to the floodplain and results in minimal effect to potential erosion or conveyance of storm and flood waters. 10. All proposed accessory improvement building and uses are consistent with use in the flood fringe as specified in the Garfield County Land Use and Development Code, Section 4-20 1 APPLICATION MATERIALS The construction within the floodplain on Lot2 will be designed and constructed in compliance with the applicable provisions of Table 4-201, Application Submittal Requirements. General application materials are included with this report. A Vicinity Map with an Area Overview is included on the attached Exhibit A, Sheet 7 of 2. The existing and proposed conditions Site Plan is attached as Exhibit A, Sheet 2 of 2. All information referenced to be included in the Pre Application Conference Summary is shown on the Exhibit A maps. Section 4-203 -ON OF SUBMITTAL Applicant: Lawrence Singer and Lisa Singer SE Job No. 14097.01 July 15,2014 Page 9 REOUIREMENTS This report and the Exhibit mapping sheets were prepared by Sopris Engineering based on our review of the relevant flood conditions and the documents provided by other consultants as listed here. Singer Remodel Schematic Plan - Land + Shelter; Improvement & Topographic Survey Plat (dated 512712014) - High Country Engineering Inc.; OWTS design - All Service Septic. All applicable supporting documents, including Exhibit A, sheets 1 and Zhave been submitted previously or are being submitted with this revised report with included narrative, pursuant to Section 4-203-8, C,D,E, F, and G. The applicable requirements of Section 4-203 Sub-sections C, D, E, F, G and N will be further addressed at building permit by the Team consultants. on4 AND i.: ¿r In response to the County's Completeness reviéw letter and request for additional information the following narrative further describes activities that will be implemented on site associated with stabilization,re-vegetation and best management practices. Detailed plans addressing all applicable code requirements will be prepared and submitted for building permit application. Construction Site Management It is not likely that the Site will receive storm water from up-gradient offsite sources due to neighboring topography and well established vegetation. During construction, any runoff will be controlled and attenuated on the site by direct infiltration into the ground, temporary retention in the vegetated depressions and by collection and conveyance to existing ditches. Potential erosion and sedimentation from disturbed areas will be controlled by installation of strategically placed silt fencing and wattles (erosion logs) where necessary. To protect newly constructed earthen structures from erosion, wattles may be placed upstream of newly installed fill. To control the potential transport of sediment off site, wattles will be placed within drainage paths and swales to collect potential debris or sediment from leaving the site or being transported to ditches or the roadside swale. These structural measures in conjunction with material storage and management will ensure little to no potential risk during a storm or flood event. All construction will be performed after major runoff and it is anticipated that recovery of disturbed areas will be completed prior to fall with adequate vegetated cover established by early spring. The followingmaterial storage and management practices are to be implemented at the Site: . Adequate garbage, construction waste, and sanitary waste handling, and disposal facilities are provided to keep the Site clear of potential pollutants and pollutant sources. . 'Wastes are disposed of in accordance with manufacturer's instructions and applicable state and federal guidelines. . Materials and wastes no longer required for the construction will be removed from the Site and properly disposed.. Potential pollutants and pollutant sources are handled in such away as to minimize contamination risk. Applicant: Lawrence Singer and Lisa Singer SE Job No. 14097.01 July 15,2074 Page 10 . Chemicals and petroleum products stored on-site and outside will be covered, placed in secondary containment, secured chemical storage lockers, and protected from accidental release on designated areas above and outside ofthe flood fringe zone atea. S oil Stabili zation and Re-Vegetation Soil stabilizationmeasures could include (as needed) applying water and binders for dust control and seeding or placing geo-textile mats on exposed slopes of proposed berms and areas of improvements. These measures can be used to stabilize disturbed areas if construction activities have temporarily ceased. When construction is completed, these measures are also used in the interim prior to permanent stabilization of these areas. V/e anticipate that soil stabilization following construction can be primarily achieved using natural grass seed mix to best match existing ground cover by hydro-seeding, hand-cast seed, and mulching' Two areas of potential erosion conceÍr in the event of flooding were identified. The proposed berm is designed to be installed between two existing berms and therefore will not have an up- stream edge exposed to potential storm or flood water flows. The greenhouse/RV barn and driveway improvements, where finish grade is to be raised one foot +/-, will be constructed with a 2:1 slope back to existing grades and stabilized with imbedded rip rap to prevent any potential erosion. All applicable erosion and storm water management will be detailed with the building permit plans. Section 4-203-N -1.i & i WASTEWATER MANAGEMENT SYSTEM PLAN An Onsite'Wastewater Treatment System (OWTS) is proposed for the subject Property. The OWTS is being designed by All Service Septic, LLC. The subsurface was investigated on April 17,2014 and subsequent gradation analysis and hydrometer analysis was run by H-P Geotech and the results are detailed in a report dated April23,2014, Job No. ll4 021F,. As part of the All Service Septic report attached hereto dated July 9, 2014 is the USDA Soil Texture Gradation Test Results. The proposed (STA) will be a mound system with imported soil, building the infiltrative area up to four feet above natural grade. Fill for the mound system was tested by Kordziel Engineering, Inc. and consists of llo/o gravel, 48o/o sand, and 4lYo fines with a description of sand, silty, slightly clayey. The Gradation results from Kordziel Engineering are within the July 9"'report from All Service Septic. The approximate footprint of the infiltrative area will be approximately l5' x 45'. Height of the mound : 4' fúl material * 2' sand filter material + 1' pipe and gravel * 1' topsoil to equal a height of 8 feet. Approximate footprint of basal area of mound : 33' x 63' considering 6 feet to the bottom of the infiltrative area. Y Applicant: Lawrence Singer and Lisa Singer SE Job No. 14097.01 July 15,2014 Page 11 ection DPLAIN All the listed items in Sub-section (1) a-i are included on the Exhibit A maps previously submitted. The 100-year BFE at the most upstream point associated with the structure within the flood fringe is at an approximate elevation of 6254.64. The proposed RV Bam/Greenhouse finish floor elevation will be at 6255.64 a minimum one foot above the BFE. The stream reach with the vicinity of the subject property lies within a broad floodplain area with scattered residential development, agricultural fields and vegetated areas with trees, shrubs and open grass areas. The subject property within the left bank flood fringe is well vegetated with minimal sloped tenain with established drainage paths and exiting ditches that will serve to drain and attenuate excess storm or flood waters. The subject arcawhere improvements are proposed is within the left bank flood fringe. The total flood fringe cross sectional distance parallel to the upstream wall of the proposed structure is approximately 330 feet from the edge of County Road 100 to the delineated floodway. The proposed accessory building structute's wall is 55 feet long or approximately lTYo of the total left bank flood fringe width. The majority of this proposed structure is within the downstream shadow of the adjacent ZoneB elevated ground to the east where the existing residence is situated along with part of the existing auto court and proposed driveway expansion. The potential effect from this limited obstruction is insignificant in relationship to the fulIwidth of the flood fringe. The floodway cross sectional width north of the proposed structure is approximately 900 feet and the right bank width of the flood fringe is up to 700 feet to the northemmost 10O-year flood plain boundary. The cross sectional widths of within these areas vary due to the existing relatively flat irregular topography within the area that includes elevated ZoneB and C land. No manmade obstructions or development exists within these floodway or flood fringe areas to the north. Therefore we do not expect any significant or calculable increases in the water surface on the subject property as a result of the minor obstruction resulting from the construction of the proposed RV Barn/Greenhouse structure in the left bank flood fringe. The applicable FEMA Flood Study, Garfreld County, Colorado, dated January 3,1986, delineates this section of the Roaring Fork River as being in Reach 3 approximately 540 feet downstream of the flood study profile section CA. The floodway data in Table 2 associated with Section CA indicates that the maximum rise in water surface would be 0.5 feet if the entire left and right bank flood fringe cross sectional length of approximately 1030 feet was completely obstructed. The existing and proposed improvements with the flood fringe in this area result in an insignificant cross-sectional area of obstruction. The general topography on the site is flat with approximately three feet of relief from east to west on stable ground with less than2%o slope. The slope from south to north is essentially neutral. The existing grades on the site with the flood fringe range from 0.25 feet above to 0.5 feet below the relative BFE's. The existing grades along the eastem boundary match the BFE of 6257,therefore the floodwater or back water flow across this area is not expected. The primary flow paths that could drain potential acceding or receding flood flows exist north of the existing residence and south of the residence to the existing berms. These areas within the shallow flood fringe each provide a minimum cross sectional width of 60 feet to allow minimal receding flood Applicant: Lawrence Singer and Lisa Singer SE Job No. 14097.01 July 15,2014 Page 12 flow across the site to the west. The existing ZoneB elevated land provides a barrier to any potential acceding flood flow from the floodway to the north. An open channel ditch traverses the northwest corner of the flood fringe by existing topography and provides for a defined flow path to drain potential receding flood waters. The driveway consists of pervious gravel and all existing and proposed grades on the site are generally at or slightly below the BFE profile. The onsite soils are alluvial with high capacity for infiltration of surface water. Sub Section 4-203-0- 2&3 In addition the applicable req uirements of Section 3-301.C.2 will be fuither addressed at building permit by the Architect. Pursuant to Sub-section 3, attached is a construction Elevation Certificate delineating the elevations and flood conditions associated with the proposed accessory/agricultural structure. Pursuant to Sub-section 3, the structure will be designed and constructed to be resistant to flood damage. The Structure will be a slab on grade structure without any crawl space enclosures, therefore the requirements of section 3-301.C.3 are not applicable. Sub-sections 4 and 5 are not applicable to this project. APPENDICES The following documents are appended hereto: AppendixooA" -Exhibit A - Vicinity Map (1 of 2), Site Plan (2 of 2) Appendix '68Ð -FEMA Elevation Certificate for Construction (RV Barn/Greenhouse only) Appendix '(C)' -Name and addresses of all property owners within 200 feet of subject property Gurfield County 1AND USE CHANGE PERMIT APPLICATION FORMCommunity Development Department tog 8tn street, Suite 401 Glenwood Springs, CO 81601 (9701 945-8212 www.garfi eld -eguÍltY.eexÊ TYPE OFAPPTICATION Û Admin¡strative Review tr Limited lmpact Review tr Major lmpact Review tI Code Text Amendment tl Amendments to an Approved LUCP El un En¿ln El sup E]Minor Temporary Housing Facility I] tr Location and Extent Review tr Rezoning ff zone Districtfl Administrative I tr I of Administrative lnterpretation [f Areas and Activities of State lnterest El Accommodation Pursuant to Fair Housing Act PU tr Comprehensive Plan Amendment r tl Minor tl Pipeline EI Variance E TÌme Extension (also check of original application) INVOLVED PARTIES Owner/Applicant Name:Lawrence at9..ç'p¡e¡s31720 p2A-840Q Malling Address:2621 County Road 100 CiU:Carbondale stare: co zip Code:81623 E-mai ¡.Lssinger@comcast. net Representative (Author¡zatlon Requiredl Name: Mailing Address o City: PROJECT NAME AND TOCATION Phone: ft70 | 70T o3lI state: co apcode:8t6zs CO t LLL Project Name: Floodplain Development Permit Applicat¡on ¡ t Assessor's Parcel Number: 239 _313 - 00 _026 PhysicaUstreet Address:2621 County Road 100, Carbondale, CO 81623 Legat Description: Section 31, Township 7 South, Rangg 8f West of the 6th P.M. in Garfield 1 Zone Disüict: R Property Size (acres)3.0 PROJECT DESCRIPTION Existing Flômê änd ác'ces-Sôry USêS- - ouTs Proposed Use (From Use Table 3403):Accessory Building and Fence Description of Project:The work in the floodplain will involve the construction of an approxi 2:00 2 {e.for ?¿i- rt ,lütttOntci/¿ f't'slêh)a.e pt'lÁta, 4rrt(ocl REqUËST FOR WAIVERS Submission Requiremenb E the Applicant requesting a Waiver of Submission Requirements per Section 4-202. List: Section: Section: Section Section Waiver of Standards E 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 ¡nformat¡on which is correct and accurate to the best of my knowledge. June 13,2A14 Signature Property Owner Lisr.- st{yø-Dete OFFICIAT USE ONLY File Number:____Fee Paid: $ tawrence Singer and Lisa Singer 2621County Road 100 Carbondale, CO 8L623 720-220-8400 Inly 7 ,Z0t4 Glenn Hartmann Senior Planner Garfi eld County Community Development 108 8th Street, Suite 401 Glenwood Springs, CO 81601 RE: Singer Floodplain Permit (Fite No. FDPA-7974) Dear Glenn, We hereby authorize Sopris Engineering LLC as our representative regarding the Application specified above. Please feel free to contact them, including Yancy Nichol, Paul Rutledge, and fim tove as tlte need arises. Feel free to call Lawrence Singer at72Û-220-8400 with any questions in addition to the professionals at Sopris Endineering at 97A-704-0311. Sincerel¡ Lawrence Singer J,'so- qs* Lisa Singer PITKIN COUNTY TITLE, ¡NC. 601 E. HOPKINS,3rd Floor ASPEN, COLORADO 81611 970-925-1766 | 970-925-6527 FAX June 19, ?014 LA\ryRENCE SINGER AND LISA SINGER 262l COUNTY RD 1OO CARBONDALE, CO 81623 RE:2621 COLINTY RD 100, CARBONDALE, CO 81623 Case No: PCT2400lWz pitkin County Ti¡e, lnc. is pleased to provide you with the owners policy along with the following endc¡s,er:'rerts re*aìiçe to the above mentioned file: Endorsement Form 130 Please review the policy in its entirety. We at Pitkin County Title, lnc. believe in providing you, our custûrner '*',tl.t a qaraiify product which will serve your needs. ln the event you do find a discrepancy, or if you have any questions or comments regarding your final policy. pieas€ contact us and we will gladly handle any request you may have as efficiently and quickly as possible. We have assigned the above number to your records to assure prompt processing of future title orders ínvolvirtg lhe property. lf you sell or obtain a loan on this property within 5 years, ask your broker or agent to contact our office tû e*sL¡re re-issue rates which may be available to you. Thank you very much for giving Pitkin County Title, lnc. the opportunity to serve you. Sincerely, Tom Twitchell Enclosures: Owner's Policy of Title lnsurance - Schedule A lssued by Name and Address of Title lnsurance Company: Westcor Land Title lnsurance Company, 201 N. New York Avenue, Suite 200, Winter Park, Florida,32789 State: CO County: GARFIELD Address Reference:2621 COUNTY ROAD 100, CARBONDALE, CO 81623 File No.: PCT24001W2 Policy No.: OP-6-CO1045-3629154 Amount of lnsurance: $1,200,000.00 Premium: $ 1,665.00 Date of Policy: Xlay Zt,2A14 @ 3:00 PM Simultaneous #:Reinsurance #: 1. Name of lnsured: LAWRENCE SINGER AND LISA SINGER 2.The estate or interest in the Land that is insured by this polícy is: lN FEE SIMPLE 3. Title is vested in: LAWRENCE SINGER AND LISA SINGER 4. The Land referred to in this policy is described as follows: LOT 2, RIES EXEMPTION according to the recorded Exemption Plat, also described as: A parcel of land situated in Lot 12 of Section 31, Township 7 South, Range 87 West of the 6th Principal Meridian, County of Garfield, State of Colorado; said parcel being more particularly described as follows: Commencing at the Southwest Corner of said Section 31 ;thence N. 19'41'45" E. 1471 .35 feet to a point on the westerly line of said Lot 12, also being a point on the northerly right-of-way of County Road No. 100, a fence post in place;thence N. 81o49'39" E. along said right-of-way 207 .30 feet to the True Point of Beginning; thence leaving said right-of-way N, 0A'27'27" W. 405.32 feet to the Rodring Fork River; thence S. 87"45'07" E. along said river 242.87 feet thence S. 82"47'35" E. along said river 109.96 feet, thence leaving said river S. A0"27'27" E. 331.92 feet to the point on the northerly right-of-way; thence S. 83'10'56" W. along said right-of-way 18.37 feet; thence S. 81'49'39" W. along said right-of-way 336.36 feet to the True Point of Beginning. lssued By Authorized Signatory SCHEDULE B-OI^/NERS CASE NUMBER DATE OF POLICY POLICY NUMBER PCT24001W2May21,2014@3:00PMOP-6-CO1045-3629154 THIS POLICY DOES NOT INSURE AGAINST LOSS OR DAMAGE BY REASON OF THE FOLLOWING: 1. Any facts, rights, interests, or claims which are not shown by the public records but which could be ascertained nv an lÀipectíon of the land or which may be aðserted by persons in possession, or claiming to be in Possession, thereof. Z. Easements, f¡ens, åhèurnnrances, or claims thereof, which are not shown by the public records' 3. Any encroacn*"Åt, enäu*ni"n"", violation, variation, or adverse circumstance affecting the Title that would be discloseä btil #rrate and complete land survey of the Land, and that is not shown by the public records. 4. Any lien, or right to a lien, imposed by law for services, labor, or material heretofore or hereafter furnished, which lien, oùignt to a lien, is not shown by the public records. 5. (a).Unpatented mining claims; (b) reservations or exceptions in patents or in Acts authorizing the issuance thereof; (c) lndia; tr;ãty or" "noiiéinal rights, including.úut not limited to, easements or equitable servitudes; or, qojwáiei rights, .i"¡m, Jr. t¡tte to watei(see additional information page regarding water rights), whether ór not the matters "*"ãpt"O under ("i, fg): (c) or (d) are shown for the public records' 6. Taxes or assessments which are not nð*iuvãnr" òr wn¡én'aie not'shown as existing liens by the records of any taxing autnority ttrat levies taxes or ässessments on real property or by the. public records; proceedings nV , óutír¡" ãôeniy which may result in taxes or assessments, or notices of such þroàeeoinls, uíneiùr or nät shown by the records of such age.ncy or by the public records T. Any service, instaliation, connection, maintenance or constrult¡orì charges for sewer, water, electricity, or garbage co¡ectionär áisposat or other ut¡litl". unless shown as an existing lien by the public records' SPECIAL EXCEPTIONS: B. Taxes and assessments (not including condominium or homeowners association assessments or dues) for the year 2014 and subiequent years only, a lien not yet due and payable' g. Right of the proprietor of a vein or lode to extract and remove his ore therefrom, should the same be found to penetrate or intersect the premiser Îãrãuv tialtgo g1d rìuht of way for ditch.es or canals constructed by the authority of the united states "s reserved in united statãs Patent recorded June 24, 1895 in Book 12 at Page 368 and recorded February 19, 1915 in Book 71 at Page 603. 10. Easement and right of way for county Road 100, as same may effect subject property' 1 1. Easement and right of way for Launsbury Ditch and Pipeline as set forth in instrument recorded November 1 , 1974 in Book 466 at Page 24. 12. Easement and right of way for Rocky Mountain Natural Gas company, lnc' asset forth in instruments recorded octouei tg, tgoi ln eoox bgiiie"g"r 235 and 236, and recorded April16, 1975 in Book472 at Page 163. 13. Easement and right of way for Holy cross Electric Association, lnc. as set-forth in instrument recorded Junu 18, 1eB5 ilä;kä;ö "i pigâiat and rerecorded June 28, 1985 in Book 671 at Page 431' rc nr rrrarr and ofher mafters as set forth on rty recorded August 4' '14. Eur"*ents, rights of way and other matters as set forth on map of subject prope 19BB as RecePtion No. 394271. 1s. ïerms and conditions of Garfield county Resolution No. 88-063 recorded August 2, 1988 in Book 738 at Page 791. (Continued) POLICY NO CASE NO. oP-6-CO1045-3629154 PCT24001w2 SCHEDULEB.OWNERS-EXCEPTI0NS--CONTINUED.. 16. Any question, dispute or adverse craim as to any ross or gain of rand as a resurt of any change in the river bed rocation by other ihan naturar causes, or ãriá*tìän throug-h accretion, relict ion, erosion or avulsion of the center thread, bank, cnannàt or flow ot waters in t'i ióàilng rı*< Civer lying within subject land; and any question as to the location of such center thread, ueo, üaÀr, ned oùhann"i "i a'tegät descriptiôn monument or marker for the prtpot*t of describing or.locating subject lands' NorE: There are no documents in the rand records of the office of the clerk and Recorder of Pitkin county' Golorado accurately locating past or pr"iånt location(s) of the center thread, bank' bed, or channel of the above River or indicating-än'äft"rätïonr ot tnÀ sàme as from iime to time may have occurred' ANÐ Any rights, interest or easements in favor of the riparian owners, the state of cotorado' The united states of America, or the general public, which exist, have äxisted, or are claimed to exist in and over the waters and 'piäràñt "ño fári ouo an'd banks of the Roaring Fork River. EXCEPTIONS NUMBERED 1 THRU 7 ARE HEREBY DELETED' EXCEPT FOR SUBSECTION (d) UNDER FÀnncnnpH NUMBER 5 (wATÉR RIcHTS)' 449411 05121/2O14 O2:59:58 PM Page 'l ot 4 Jean Alberico, Garfield County, Coloraci,o Rec Fee:$26.0O Doc Fee. $1 2O.OO eRêcorded Dt¡curnentary. Fee $ 120.OO WARRANTY'DEEP THIS ÞEED, nrade. May ?1 ,2û14, Bt;tween Tl-lE HUT INC-. A COLORADO CORPORATION of ihê county o¡ fÐlr',-llz..là., Srae ol '-4 ¿a.re ) r- , GRANTOR,*-a-* ANt] LAWRENCE S .¡vhose legal address ¡s: ÍNGER ânc| LISA SINGER, GRAIITEE /Õö La:-6,-,&*e, G) f/4 '¿-s of the County of lìtate of WI.fNESSE-l-H, Tlrat f<¡r and in considerat¡cn of the sum oiten dollers end otlrer good enrj va,uablê conslderEtion, the receiÞt and sufficiency of wh¡oll is lreireby ackrrowledged, the grantor has gran{ed, flargalned, sr:ltl and uunveyed, and bytltese presenls does'granl, bârgãin, s61l ãnd convey and confirm unþj üre grentee, THÊIR heirs and asslgnsforever, all the re?l ploperty togetherwith improvernent6, if . any, s¡tuate and lying and bel{ìg in the County of GARFIELD, State oí COLORI\DO, descr¡bed as fui¡lows: SÊe Attached E):hibii "4" TOGETHER vvíth all and s;ngular the hereditaments and appurterìances thereto belonging, pr in anywiso appertahl¡ng, and'the rpversl¡cn Ând iever6lons,-femalnddrs, rents. issues and prof¡ts thèrêof, âlìd all the eiiate, riglri t¡ile, intÞfêst, cle¡rn arld demand whâtsoêver of the grãntôr e¡ther in lâw ôr equlty¡ of, in and to the abovã bargained premlsês. with the hereditomenG ãnd ãppurtenances. TO HAVE AND TO þlOLf¡ the sald premises-above'bargainecl and'described, with the'appurtênãnces, Llnto thr: gfãntee,THElR hêirs ånd ãsslgôs forêver. And the Gran(or, tor ITSELF. ITS lreirs and assigrrs. does covenant, granl. bargâin, and agre.e to ãnd with the GranteÊ, l-HEMSELVES, THEIR heirs ând ass¡gns, that sl the tirne of the rnseaìíng and delivery of these prÊsınts, ITS is wêU sel¿ed of the premises above conveyed, has good, sure. peñ*ct, ãbsolute ancj indefeasible êstäte of inherilance, in law. in feê slmplê, ãnd hes good right. futl powei anrl lawlr¡l authorily to grant, bargain, sell snd'convby lhe sante ¡n rnanner and fonn as aforosaid, a¡rd that th€! sãrne ãre free ând clear from all former and other grãnts, barga¡ns. salês, lfens, taxes, a6Ê6ssmOtìts, encumÞrances and restr¡ctlons óf whatevel-k¡nc, or nâture soever, except those nlatlefs as set forth on Exhìb¡t "8" attached h6reto snd incorporated herein Þy -refere¡ce, The grantor shall ånd wlll WARRANT AND F(JREVËR DEFEhIÞ the ãbovs bargained premises ¡n thÈ quiet and peaooeble fJossesslon of the grãnteet. THEIR hei¡s and ã3sigr1s, âgâ¡nst all and every person or persona låwfufly ðtaiming the whole or any part lhçreof. The singular numbsr shall include the plural,' thê plural the slnE¡ular, End fhe use of gender shall be appl¡câblê to âll genders tN i^/l"rNESS wHEREOF the giantor has exrcutêd this.dPec. . SIGNATURES ON,PÀGE 2 I Obligatory Insurance Fraud Statement: Vy'e are obligated by Colorado Law (CRS 10-1-128) to provide the following statement: It is unlawful to knowingly provide false, incomplete or misleading facts or information to an insurance company for the pu{pose of defrauding or attempting to defraud the company. Penalties may include imprisonrnent, frnes, denial or insurance and civil damages. Any insuranoe company or agent of an insurance company who knowingly provides false, incomplete or misleading facts or information to a policy holder or claimant for the pu{pose of defrauding or attempting to defraud the policy holder or claimant with regard to a settlement or award payable from insurance proceeds shall be reported to the Colorado Division of Insurance within the Department of Regulatory Agencies. ALTA OIVNER'S POLICY(6-17-Û6)WESTCORT,AND TITLEINST]RANCE COMPA]\IYOWNER'S POLICYOFTITLE INSURANCEHOME OFFICE875 Concourse Parkway South, Suite 200Maitland, FL 32751Telephone: (407) 629-5842oèo?oc3€r\âs :r July 3, 2014 Community Development 108 8rh Street, Suite 401, Glenwood Spúngs, CO 81601 Office: 970-945-82 l2 F'ax: 970-384-3470 Lawrence $inger 2621 County Road 100 Carbondale, CO 81623 Sopris Hngineering 502 Main Street, Suite A3 Carbondale, CO 81623 ATTN: Paul Rutledge/Yancy Nichols RE: Singer Floodplain Permit (File No. FDPA-7974) Dear Lawrence, Paul, and Yancy: This letter is in regard to the County's completeness rev¡ew of the Singer Flood Plain Permit Application located at 2621 County Road 100. Your Application is being reviewed in accordance with the Garfield County Land Use and Development Code, including but not limited to Sections 4-109, 3-301, and 4-203(0) as detailed in the pre- application"þreviously provided to you. Our completeness review included input from the County Attorney's Office. ln additional thank you for additional information provided as part of our site visit earlier today. Several items that need to be addressed prior to a determination of completeness are outlined as follows: 1, The Application needs to be signed by all property owners or additional authorizations to represent provided. lt is currently only signed by Lawrence Singer. 2. lf Sopris Engineering will be the Applicant's representative they should be identified on the Application form and a letter of authorization should be provided. 3. Notice for the Director's Decision will include mailing to any owners of mineral rights on the property. The Application needs to be supplemented with a listing of mineral rights owners or documentation of the Applicant's efforts to research mineral ownership. A guideline memo from the County Attorney's Office is attached and provides information on how to best research mineral ownership and address the code requirement. 4. The Application needs address the approval criteria for a Flood Plain Permit contained in Section 4-109 (C). GarÍìeld County 5- The Application needs to include more specific references to the standards contained in Section 3-301 and specifically how they will be addressed. By way of example: r References to stabilization, re-vegetation, and best management practices should include specific examples that will be implemented by the Applicant. o More detailed information on the design and flood proofing of the OWTS and raised septic fields is needed, o References to engineered foundations for the proposed structure need to address the code requirements of Section 3-301(CX2), 6. The analysis based on Section 4-203(0) should clearly address the individual sections and requirements of this portion of the code. Additional information needed includes the following: o The analysis needs to address the dimensions and elevations of the raised septic fields. . The analysis needs to include information on the proposed driveway expansion including whether it will be an impervious surface and anticipated elevation and fill. . The analysis needs to provide information on the methodology used to make key statements and representation contained in the Application. o The statement that the requirements of Section 3-301.C.2 will be further addressed at building permit needs to be clarified and more clearly supported by the submittals. Once the above completeness topics are addressed we can finalize our completeness review and begin scheduling your review and Directors Decision. Please note that the Garfield County Land Use and Development Code requires that the technical completeness issues be resolved within 60-days of the date of this letter, otherwise the application will be deemed withdrawn unless a request for extension is submitted and approved. Please feel free to contact me with any questions on the topics noted above. We look forward to scheduling your public review as soon as possible. Sincerely, þ* Glenn Hartmann Senior Planner ld Co MEMORAI\DUM TO Staff County Attorney's Office Jvne 24,241,4 Mineral Interest Research FROM DATE: RE: Mineral interests may be sevçred from surface right interests in real property. Colorado revised statute 24-65,5-103 requires notification to mineral owners when a landowner applies for a land use designation by a local governmÊnt. As such, the landowner must research the current owners of mineral interests for the property. The Garfield County Land Use and Development Code of 2013 ("LUDC") Section 4- 101(EXlXb)(4) requires written notice to owners of mineral interests in the subject propeúy ooas such owners can be identified through the records in the offrce of the Clerk and Recorder or Assessor, or tbrough other means.n' It is the duty of the applicant to notiS mineral interest owners. The following is a suggested process to rescarch mineral interests: 1. Review the cunent ownership deed for the property (i.e. Warranty Deed, Special Wananty, Quit Claim Deed or Bargain and Sale Dced-NOT a Deed of Trust). The ownership deed is usually one or two pages. Is there a reservation of mineral interests on the ownership deed? Are there any oxceptions to title? A deed may include a list of reservations that reference mineral olüners or oil and gas leases. 2. Review your title insurance policy. Are there exceptions to title listed under Schedule B- II? If so, review for mineral interests that were reseryed and oil and gas leascs. 3.' Check with the Assessor's office to determine if a mineral interest has been reserved from the subject property, The Assessor's offrce no longer documents the mineral reservation ownership for its tax roll reçords unless ownership has been proven, There are only a limited number of mineral o\ryne$ who have provided such information to the Assessor's office so this may not provide any information, depending on your property. MEivtO June24,2014 Page2 4. Research the legal description of the subject property with the Clerk and Recorder's computer. You can search the Section, Township, and Range of the subject property. You may find deeds for mineral interests for the subject properfy. 5, Research whether a Notice of Mineral Estate Ownership was filed for the subject property. On the Clerk and Recorder's computer, search under Filter (on the right hand side of the screen), General Recordings, Notice of Mineral Estate Ownership for the subject property. 6. If you find mineral interest owners as reservations on your deed, listcd in your title insurance policy, from the Assessorns records or the Clerk and Recorderos computer, you need to determine whether these mineral interests were transferred by deed and recorded in the Clerk and Recorder's office. 7, Enter the name of the mincral interest owner as the Grantor in the Clerk and Recorder's computer to see if the mineral interest was ffansfened. If you find a transfer deed, you need to repeat this process to follow any transfer of the mineral interest to present day. 8. Include a description of your resea¡ch process in your application and the name(s) and address(es) of the current mineral interest owner(s). Mineral interest research can be a diflicult and time consuming proçess. If you are unable to determine mincral rights ownership by yourself consider hiring an attorney or landman. Attorneys and landmen specialize in determining mineral rights ownership, but they charge a fee for their services. *Lü- ffi$$rfit ¡iå,f;iijl'å?ääåi ü July 9,2014 Project No. C1072 Larry Singer lssinoer@comcast.net Onsite Wastewater Treatment System Design and Floodplain Considerations 2621 CR 100 Garfield County, Colorado Larry, ALL SERVICE septic, LLC performed a subsurface investigation and is in the process of completing an onsite wastewater treatment system (OWTS) design for the subject residence. The property is located outside of Carbondale, in an area where OWTSs and wells are necessary. The subject property is located within the floodplain. SITE CONDITIONS A 4-bedroom, single-family residence and one bedroom cabin presently exist and are utilizing an existing OWTS. There is a desire to upgrade the existing OWTS and incorporate an addition to the residence and a future greenhouse/RV parking structure with plumbing. There is a private well located on the property. Minimum regulatory setbacks will be maintained to pertinent physical features such as the private well, the Roaring Fork River, and auxiliary ditches, SUBSURFACE The subsurface was investigated on April 17,2014 by digging one 6.5-foot profile pit and taking a soil sample from approximately 2 to 3-feet below grade. A gradation analysis and hydrometer analysis was run by HP Geotech and results are detailed in a report dated April 23, 2014, Job No 114 0218. The materials encountered in the profile pit consisted of 2.O-feet dark brown, dense, moist root zone, underlain brown gravelly sand with 4 to 6-inch cobbles to a maximum depth explored of 6.5-feet where groundwater was encountered. The bottom of the pit exposed larger cobbles up to 18-inches in diameter. The gradation performed by HP Geotech shows the soil consists of 54o/o gravel, 39% sand, andTo/o silt and clay. The USDA soil type is classified as Very Gravelly Sand. Groundwater was monitored after ditches were turned on May 5,2014. Groundwater was recorded in the profile pit at 5.5-feet on May 6,2014, at 4.5-feet on May 15, 2014, and at 3.5-feet below grade on May 30,2014. For purposes of this design, we will estimate high groundwater level at 2-feet below grade. The proposed soil treatment area (STA) will be a mound system with imported soil, building the infiltrative area up to 4-feet above natural grade. Fill for the mound system was tested by Kordziel Page2 Engineering, lnc. and consists of 1 1o/o gràyê',48% sand, and 41% fines with a description of sand, silty, slightly clayey. FLOODPLAIN CONSIDERATIONS To ensure no infiltration of flood waters into the OWTS, septic tanks will be installed in accordance with manufacturers' recommendations and appropriately seam-sealed. lf groundwater levels are higher than 2-feet below grade, and burial depth exceeds 2-feet, an H-20 rated lid will be specified. Additionally, PVC risers and watertight lids will be specified. Septic tanks will be anchored to assure they do not float. The STA will be mounded 4-feet above native grade with the imported silty, slightly clayey sand described above. The STA will consist of a pressurized sand filter system will be an extension of the existing berm located in a drier portion of the property, east of where the profile pit was excavated. The mound design will incorporate the minimum final slope no greater than 3-feet horizontal to one foot vertical. DESIGN CALCULATIONS 3 bedrooms x 75 gallons/person/day x 2 people/bedroom = 450 gallons 3 additional bedrooms x 75 gallons/person/day x I person/bedroom = 225 gallons Wastewater flow = 675 = Q Septic Tank sizing for 6 bedrooms = 1750 gallons minimum Soil Type = Sand = 1.0 gallons/ SF / day Soil Treatment Area = 675 SF Pressure dosed bed 6.75 x 1.0 = 675 SF Pipe and gravel bed = 675 SF x 1.0 = 675 SF Approximate footprint of infiltrative area = 15' x 45' Height of mound = 4' fill material + 2' sand filter material + 1' pipe and gravel + 1' topsoil = I ft Approximate footprint of basal area of mound = 33' x 63' (considering 6 feet to the bottom of the infiltrative area) DESIGN SPECIFICATIONS The installation will include two 10OO-gallon septic tanks with a pumping system in the second compartment of the second septic tank. Effluent will be pumped to a 15' x 45' sand filter, mounded over 4-feet of imported fill and incorporated into an extension of an existing berm. The sand filter will be pressure dosed. Page 3 Please call with questions. Sincerely, ALL SERVICE septic, LLC (t^,, ttx ClvtÓ<,t6 Carla Ostberg, MPH, REHS Enclosed: Soil testing reports H l-lt\ltcJrl- truÕ I L:¡rrrrrllr. f )arvf ¡k { ietrtcchnir:;r I, I lr ç- s{t:fi (;}ilTriy l{0&l l $¡l üle¡rvrrn¿l $¡titigt. {l*for¡rclc äi {'{l i Yt\ut| ü: ()I t.t r) 4 3 "' ¡ q &Ít iinri r;¡7{r"{¡d.J'1,45,t llirtníf ; h¡rg,cti(r,¡p$r(,lri{rft .r:(r}11 t{ April 23, 2014 CBO Inc. Attn: Carla Ostberg 33 Four Wheel Drive Road Carbondale, Coloraclo 81623 çqïIil.*$t b$ r&f;t nl$ il i j, €fåt"ï Job No. I 14 02lE sulrject: Laborator¡, Tqst Results, 2621 100 rtond, Gnrfîold county, colorsdo Dear IVIrs. Ostberg: As requested, Hepworth-Pawlak Geotechnical, Inc. perfonned gradation analysis on a sample delivered to our labolatory by you. The scrvices were performed in accorclance with our agreement forprofessional engineering services to you, dated January 24,2014. Results of the gradation and hydrometer analysis performed on the sample are presented on Figure l. The satnple tested has an USDA Soil Texfure Classification of Very Gravelly Sand. If you have any questions or need further assistance, ¡rlease call our offîce. Sincerely, HEPWO * PAÏVLAI( GEOTECHNICAL, INC. Louis Ë. Ëller LËE/ksw attachment F-igure I * usD.A. soil Texture Gradation Test Results P*rk*r 303-ådl-?l lÍl üc¡l*r*dü $pringx ?l$-{¡.}S-$$öä , fdllvcr{,hçr*c 97{}-¡{úB-l-rtttg 24HH. 7HR 0 45 MlN. 15 MlN. ÏIME READ¡NGS 1 MIN.U.S. STANDARD SEBIES #140 #60 #95 #18 #10 CLEAR SQUARE OPENINGS 60MlNr9MrN,4 MtN,#4 s',5n6n 100 90 80 70 10 20 30 ôl¡J 40z. l- LJE l- 50 z. LJ() É. t¡JrL 60 602 ıv) fL 50 t-.-z lJJ()É LJ40 o- 70 BO 90 100 30 20 10 0.001 ,002 .005 ,009 .019 .045 ,106 .025 ,500 1.00 2.00 DIAMETER OF PABTICLES IN MILLIMETERS 4,75 9.5 19.0 37.5 76.2 152 2A3 CLAY coBBtËs GRAVEL 54 70 SAND 39 %SILTAND CLAY 7 % USDA SOIL TYPE: Very Gravelly Sand FROM: 2621100 ROAD SILT 114 0218 USDA GRADATION TEST RESULTS Figure 1 KORDZIEL ENGINEERING, INC. Gradation Test Results #100 #50 #30 #16 #8 #4 3t8', 3t4', 1-1t2', 3', €o c! oú o Io 100.0 90.0 80.0 70.0 60.0 50.0 40,0 30.0 20.0 10.0 0.0 èD o LoÈ #200 GRAVEL SAND FINES MOISTURE 0 l0 20 30 40 50 60 70 80 90 100 0.01 0.1 1 Diameter of Particle in Millimeters DESCRIPTION: Sand, silty, slightly clayey (SM-SC) l0 HOLE / SAMPLE P-l DEPTH 2' LIQUID LIMIT PLASTICITY INDEX DRY DENSITY (pcf) N/A IlVo 487o 4lVo 6.2Vo DATE: 3/29t2013 NAME: 1422W. Buttermilk Road PROJECT NO.: 1462 ü / ßl ///) til tüt a I /) tfit t / / lÅt / lil til ffi FIGUREl