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HomeMy WebLinkAbout5.0 DD Staff Report 06.18.2018Director's Determination - Staff Report Exhibits Schrock ADU Administrative Review Applicants are Randy and Kathryn Schrock June 18, 2018 (File GAPA-05-18-8644) Exhibit Letter (Numerical) Exhibit Description 1 Public Hearing Notice Information 2 Receipts from Mailing Notice 3 Garfield County Land Use and Development Code, as amended 4 Garfield County Comprehensive Plan of 2030 5 Application 6 Staff Report 7 Referral Comments from Mountain Cross Engineering (dated 6/7/2018) 8 Referral Comments from Colorado Division of Water Resources (dated 5/24/2018) 9 Referral Comments from Garfield County Chief Building Official (dated 5/17/2018) 10 Referral Comments from Garfield County Road and Bridge (dated 5/21/2018) 11 Letter from Sopris Engineering (dated 9/29/2014) 12 13 14 15 16 17 18 19 20 21 Exhibit 1 Garfield County PUBLIC HEARING NOTICE INFORMATION Please check the appropriate boxes below based upon the notice that was conducted for your public hearing. In addition, please initial on the blank line next to the statements if they accurately reflect the described action. My application required written/mailed notice to adjacent property owners and mineral wners. vt) Mailed notice was completed on the l e day of Iv) , 20 19 All owners of record within a 200 foot radius of the subject parcel were identified as shown in the Clerk and Recorder's office at least 15 calendar days prior to sending notice. All owners of mineral interest in the subject property were identified through records in the Clerk and Recorder or Assessor, or through other means [list] • Please attach proof of certified, return receipt requested mailed notice. 0 My application required Published notice. Notice was published on the day of 20_. • Please attach proof of publication in [ ] O My application required Posting of Notice. Notice was posted on the day of , 20_. Notice was posted so that at least one sign faced each adjacent road right of way generally used by the public. I testify that the above information Is true and accurate. Name: Ifs N ti)1 Sc �n�.si K 19 T 14(.17 S-•(-- Signature: - 1N>V\�t�lW Date: 5 1 ) Zalg 7018 0360 0001 9400 1019 0360 0001 9400 U.S. Postal Service" CERTIFIED MAIL° RECEIPT Domestic Mail Only FordcllVery information, visit our website at tuwwiisp.0,corn ,•111. , ., 1 .1 - parrro1Mari roe $3.45 �:tcire Sotvicas &b=oos (b cvborc or*, on $everrol ❑eolurn Receipt (hardcopy) 5 . UO ❑ Return Receipt (electronic) $ ;9 ❑ Certified Mali Restricted Delivery $ z ['Adult Signature Required ❑Adult 86®nature Restricted Delivery $ Postaf(o $0.50 Tolnl Po:maga rind Pooe 95 i3. Sum 1b beg. g. 4{rool ont�fPO tgo�i7fa a, �cer.:�� om. �. er tiW(J;>C4-41 � y1SI6-0 F. 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[3 Adult Signature Restricted Delivery $ Postage. fetal Fo.ingo eotT 4gi $4.50 .95 &WI" 5 ulnr1raCj rix -T r r y ISeS .ri .1pt or itdTlfo>t fib. r � c t rcc o) k� 1_I... a...0.c ?. P c/ (4' fi0ja 11�ida 1 -•\c"1i�Joxl T 1. % 4 L 0 FI (1,0 0538. 19• V f/18/2010 PS Forin 3000, April 2015 700 7530 02-000 00,17 See Revorso lot Instructions. From: To: Subject: Date: Robin Chatmas Randy Schrock: Claire Dalin RE: Schrock ADU Project - Public Notice Tuesday, May 22, 2018 2:16:10 PM Hi Claire Dalby. Please let this email serve as confirmation that Springridge Reserve did receive notification of Mr. Schrock's renovations/construction. Let me know if you have any questions. Thank youl Respectfully, Robin Chatmas Community Association Manager Integrated Mountain Management (970) 945-7653 ex 230 PO BOX 908 GWS, CO 81602 www. i n 1egr a led mount aingr'oup.cam INTEGRA ETET D MOUNTAIN NSNAQp1IU4T Elevating Customer Success From: Randy Schrock <mail@rschrock.com> Sent: Tuesday, May 22, 2018 2:11 PM To: Robin Chatmas <robin.chatmas@integratedmtn.com>; Claire Dalby <cdalby@garfield- county.com> Subject: Schrock ADU Project - Public Notice U.S. Postal Service'" CERTIFIED MAIL° RECEIPT Domestic Mail Only For delivery information, visit our website at tvww.usps,cum'. GLEt I IGUD 8PRIt[68`r 40 .8 401, CotthF t1 pinta FOS $3.45 taTtan4cosilroospootroa.T. adores, o Return Receipt (hardcopy) $ ❑ Return Receipt(electronic) $ ❑Caddied Mall Restricted Delivery $ —S4 o Adult Signature Required $ ra Adua Signature Reetrioted 056Y $ nes1(sga $0.50 Irl• ti 05 8 Here I Tata' FoatageendFodu ;�O5/41S 3 $L 95 LLL ' t To iu TC k^ir c Arlf�� GrY[111JRY �O,t r Ph �''t• RCP 'dry 104; i .k CO C (4, O a 0 , PS Form 3800, April 2015 PSI,' 753D -02 -CCU -9047 See Reverse tor Instructions Thanks for the call this afternoon and the email Robin, much appreciated. As discussed, we were required by Garfield County to send a Certified Letter to the Springridge Reserve HOA notifying them of our intent to build an ADU on our property at 55 Faranhyll Ranch Road as our property boundary is within 200' of the Springridge Reserve property boundary. Attached is a PDF of the Certified Mail we sent to the Springridge Reserve HOA address of 765 Dry Park Rd, Glenwood Springs, CO 81601 as we were told at the Post Office that PO Box 1330, which Garfield County has on record, is no longer used by Springridge Reserve. As the manager of the Springridge Reserver HOA, could you please forward this to the HOA board as notification of our project? Additionally, could you email back Clarie Dalby (ccIalbyggarfi Ecol _cam) with Garfield County confirming receipt of this email and your intent to share it's content with the HOA board? I very much appreciate your help with this matter. Randy Schrock Exhibit 6 PROJECT INFORMATION AND STAFF COMMENTS TYPE OF REVIEW APPLICANT (OWNER) LOCATION LEGAL DESCRIPTION LOT SIZE ZONING COMPREHENSIVE PLAN RECOMMENDATION Schrock ADU GAPA-05-18-8644 June 18, 2018 - CD Administrative Review — Land Use Change Permit for an Accessory Dwelling Unit (ADU) Randy and Kathryn Schrock 55 Faranhyll Ranch Road, approximately 2.8 miles south of the City of Glenwood Springs Parcel 3 of the Faranhyll Ranch Subdivision (Reception No. 502929); Lots 3 and 5 of Section 9 and Lots 1, 2, 3, 4 and 5 of Section 10, Township 7S, Range 89W of 6th P.M. Parcel No. 239510300132 36.401 acres Rural (R) Residential Low Density (10+ acres/du) Approval with Conditions DESCRIPTION OF THE PROPOSAL The Applicant is requesting a permit for an Accessory Dwelling Unit (ADU) on a 36.401 -acre parcel located within the Rural zone district. As the property is over 4 acres, the ADU is limited to 3,000 square feet. The Garfield County Comprehensive Plan identifies the property as Residential Low Density (10+ acres/dwelling unit). The property is part of the Faranhyll Ranch Subdivision, platted in 1996. Access to the site is via an existing driveway and a private roadway from County Road 117 (Four Mile Road). Proposed utilities to the ADU include shared well water and a shared septic system. The site has adequate areas for off-street parking and snow storage and other existing uses on the property. The Applicant is requesting waivers from the submittal requirements for an Improvements Agreement and a Development Agreement. These requests are deemed appropriate for the Application as the development will not be phased and no new public improvements are proposed or required as a result of the application. The waiver request from submittal requirements for a Traffic Study is also deemed appropriate since there will be no increased traffic to the property as the ADU will be for personal use only as per HOA restrictions which do not allow accessory dwelling units to be leased out as rental property. II. DESCRIPTION OF THE SITE Figure 1: Vicinity Map Figure 2: Aerial View of Subject Property The site is currently developed with one single-family residence. While the eastern portion of the 2 parcel is significantly sloped, the development area for the proposed ADU within the 8.1 acre building envelope of the property is generally flat. Four Mile Creek splits the parcel, running parallel to Four Mile Road on the eastern boundary of the building envelope. There is a vegetative buffer between the creek and existing home. A floodplain exists on the parcel but existing and proposed development does not lie within it. 28.3 acres of the parcel is under conservation easement. rz Figure 3: View of Existing House and Proposed ADU Location Figure 4: Proposed ADU Location 3 \ ACCESS & unurr— IsE11EHr 140. 502929 00' MADE ACCESS s UIIUTY (ASDIENT RECEPUCti N0. 502929 Farannyll Ranch Road SEC 9 FOUND Ie REBAR 1085.05' I fag FOUR ME CREEK ti \ 11 \ I. PAVED ROADWAY APNR7o0 90INIDAI TaUk Fit DATED \\ SEC 10 BOWER REEAN NI0 15 WM EASEMENT tCFRCRE NID PIPELK ANON N P I J(SIRRO ,1 RECEPTION Ha 7001,6 g PAD I a& \ Proposed ADU F.OJIU} G ENVELOPE RECEPTION N0. 502929 \—nEcmIc remescowort. Immix WEN, CAN PEDESTALS 1 Figure 5: Site Plan 111. AUTHORITY - APPLICABLE REGULATIONS A. The Land Use Tables contained in Section 3-403 of the Land Use and Development Code designates an Accessory Dwelling Unit within the Rural zone district as requiring Administrative Review. B. Section 4-103 of the Land Use and Development Code sets forth the Administrative Review Procedures by which the current Application is being considered. 4 C. The Application submittal requests three waivers from submittal requirements. These waiver requests are from submittal requirements included in an improvements agreement, development agreement and traffic study. Submittal waivers have been accepted as part of the completeness review. D. Article 7 of the Land Use and Development Code sets forth general approval standards in Division 1, general resource protection standards in Division 2 and site planning and development standards in Division 3. Accessory Dwelling Units are also subject to Section 7-701. The standards are addressed in the Application submittals and in the Staff Analysis section of this Staff Report. IV. PUBLIC AND REFERRAL COMMENTS The Applicant has provided documentation that all required notice mailings have been completed in accordance with the LUDC. The Application received no public comments. Referral Comments received on the Application are attached as Exhibits and summarized below: A. Garfield County Consulting Engineer, Mountain Cross Engineering (Exhibit 7): Applicant should evaluate driveway construction, provide 4 -hour pump test and water quality testing for existing well, evaluate wildfire hazard and drainage. B. Colorado Division of Water Resources (Exhibit 8): No objections as long as the uses of the well do not exceed those allowed under the existing permit for three single-family dwellings. C. Garfield County Building Official (Exhibit 9): Applicant will need to meet architectural requirements of the Building Code at time of building permit and septic permit will need to be verified. D. Garfield County Road and Bridge (Exhibit 10): No concerns or objections with the request. No response was received from Environmental Health, Vegetation Management or Glenwood Springs Rural Fire Protection District. V. STAFF ANALYSIS AND CRITERIA Article 7, Division 1: General Standards Section 7-101: Compliance with Zone District Use Regulations The property is in general compliance with Zone District Regulations for the Rural Zone District. The proposal meets minimum lot area, maximum lot coverages and property setbacks. Section 7-102: Conformance with Comprehensive Plan and compliance with IGAs The County Comprehensive Plan identifies the property as Residential Low which provides a 5 suggested density of one unit per 10 acres. As the property is 36.401 acres, the residential density identified within the Comprehensive Plan would be satisfied with the addition of the ADU. Section 7-103: Compatibility The proposed use is located in a rural area and is unlikely to significantly alter or impact the character of the area. The areas surrounding the subject property are predominantly residential and agricultural in nature. Section 7-104: Sufficient, Adequate, Legal and Physical Source of Water The ADU will be served by an existing well on the property (Permit No. 281229) issued on July 21, 2009. This well provides for the use of ground water for up to three single-family dwellings. The permit and application was reviewed by the Division of Water Resources (Exhibit ?) who indicated no issues with the proposed ADU being served by the existing well as long as the uses do not exceed those allowed under the permit. The applicant has provided information that the existing well is fitted with an extensive water softening, treatment and filtration system. However because this does not prove the adequacy or quality of well water as per the County's Code, the applicant requested that the required pump test and water quality test be conditions of approval if need be. Since no pump test or water quality information has been provided, staff has included a condition of approval that the applicant provide a 4 -hour pump test as well as water quality test. Garfield County designated engineer also supplied referral comments recommending both the 4 -hour pump test with recovery date and water quality test. Section 7-105: Adequate Central Water Distribution and Wastewater The existing primary dwelling unit is served by a permitted on-site wastewater treatment system (OWTS) designed to serve a three-bedroom dwelling unit. After a site visit on April 25, 2018, the Garfield County Assessor adjusted County records to change the primary dwelling unit from three bedrooms to two, designating the third available bedroom to the proposed ADU. Garfield County Building Official deemed this arrangement acceptable. Garfield County Hazard mapping shows the existing house and planned ADU location as within an area of septic system constraint which usually triggers a requirement for an engineered OWTS. Applicant has indicated that the OWTS is engineered. The existing system was inspected by a professional engineer in 2014 and found to be in compliance with Garfield County regulations and the permitted designs (see Exhibit ?) 6 Flood Plain Septic System Constraints TYP E HIGH WATER TABLE SLOW PERC RATE Figure 6: Septic System Constraints Section 7-106: Adequate Public Utilities The applicant has represented that adequate public utilities exist to the structure Section 7-107: Access and Driveways The application was referred to the Garfield County Road and Bridge Department who had no concerns with the proposal (Exhibit ?). The property is served by a driveway accessed off a private roadway which accesses directly off of Four Mile Road (County Road 117). The applicant, as well as site visit observations, has verified that the existing driveway and access road meet the design standards found in Table 7-107. The application was reviewed by the Garfield County designated engineer who did not indicate any issues with access. The waiver request from submittal 7 requirements for a traffic study is deemed appropriate as the addition of the ADU will not contribute to any additional traffic. The ADU will be for personal use of the property owners only as per HOA restrictions disallowing the leasing of ADUs to tenants, therefore no additional traffic will be incurred as a result of the proposal. Figure 7: Access Road Section 7-108: Natural Hazards Mapping documents and FEMA Firm Maps show a portion of the parcel within the floodplain surrounding 4 -Mile Creek. Although the building envelope overlaps into the floodplain and the existing house is abutting the floodplain boundary, the house is technically outside of the floodplain and the ADU location will be on the western side of the house (see Figure 6). Neither the County designated engineer nor County Chief Building Official expressed concerns over floodplain issues. Garfield County Hazard mapping shows the existing house and planned ADU location as within an area of septic system constraint due to a high water table. This issue has been addressed in staff analysis of Section 7-105 Adequate Central Water Distribution and Wastewater Systems for this report. Section 7-109: Fire Protection According to the Garfield County Community Wildfire Protection Plan (CWPP), a large part of the subject property including the site for ADU construction is identified as having a very high wildland fire susceptibility (Figure 8). The parcel is located within the Glenwood Springs Rural Fire 8 Protection District service area. The application was referred to the Glenwood Springs Rural Fire Protection District, however no comments were received. As the wildfire hazard is considered very high, Staff recommends a condition of approval based on the requirements of the Code that the roof materials for the ADU structure be comprised of noncombustible materials. 7.0968106436 6951,6200141 � +I :13319).4:m.1., ' -4 51.0706434 n�•l7+raita�l��[�Ge:'Lipp ytr ::arm-Sta, iiV0V3pm4a. i ill i I ill., GIS Figure 8: Wildland Fire Susceptibility Index Wildland Fire Susceptibility Index 1 � NR 240,661 Acres TT Low 1,194,700 Acres Moderate 246,396 Acres f 1 High 145,838 Acres n Very High 65,790 Acres Article 7, Division 2: General Resource Protection Standards Section 7-201 Agricultural Lands The proposed development will be adjacent to an existing residential use and is not expected to adversely impact agricultural uses. Based on the location of the development along with representations by the applicant, it is not anticipated that the proposed development would adversely affect neighboring agricultural uses on the subject parcel. Section 7-202 Wildlife Habitat Areas The ADU is expected to have impacts on wildlife similar to a single family dwelling unit. As a result, no significant impact to wildlife habitat is expected. Section 7-203 Protection of Waterbodies The applicant has indicated that the proposed ADU will be located on the western side of the existing house, more than 100 feet away from 4 -Mile Creek to the east. As a result, the 35 -foot minimum waterbody setback standard is satisfied and no excessive impact to waterbodies is anticipated. Section 7-204 Drainage and Erosion In addition to a topographical map and soils report, the applicant supplied the following 9 explanation for drainage and erosion: "The drainage systems, ditches, culverts and drains supporting the existing Primary Dwelling Unit/Residence will be utilized to service the proposed ADU. New drainage systems, integrated into the existing drainage systems, including foundation -level perforated pipe, sub -surface perforated pipe and roof gutters will be installed during the appropriate construction phases." Garfield County designated engineer submitted the following referral comments: "It appears that the proposed ADU will conflict with the existing drainage and the existing culvert. The drainage shown in the application materials proposes that the drainage is to be diverted around the ADU. However, this would divert the water into the hillside. The Applicant should verify that the drainage and grading that is proposed is practical and otherwise develop alternatives that are more feasible." Mapping documents and a site visit confirmed that the building location for the ADU is relatively sloped (see Figure 2) and will require significant excavation at time of construction which will in turn impact drainage and erosion. This as well as the County designated engineer referral comments has led Staff to include a condition of approval requesting a grading and drainage plan from a qualified professional prior to issuance of the land use change permit. Sections 7-205 Environmental Quality No water or air quality issues are anticipated from the proposed project. Section 7-206 Wildfire Hazards According to the Garfield County Community Wildfire Protection Plan (CWPP), a Targe part of the subject property including the site for ADU construction is identified as having a very high wildland fire susceptibility (Figure 8). The parcel is located within the Glenwood Springs Rural Fire Protection District service area. The application was referred to the Glenwood Springs Rural Fire Protection District, however no comments were received. As the wildfire hazard is considered very high, Staff recommends a condition of approval based on the requirements of the Code that the roof materials for the ADU structure be comprised of noncombustible materials. Section 7-207 Natural and Geologic Hazards Mapping documents and FEMA Firm Maps show a portion of the parcel within the floodplain surrounding 4 -Mile Creek. Although the building envelope overlaps into the floodplain and the existing house is abutting the floodplain boundary, the house is technically outside of the floodplain and the ADU location will be on the western side of the house (see Figure 6). Neither the County designated engineer nor County Chief Building Official expressed concerns over floodplain issues. Garfield County Hazard mapping shows the existing house and planned ADU location as within an area of septic system constraint due to a high water table. This issue has been addressed in 10 staff analysis of Section 7-105 Adequate Central Water Distribution and Wastewater Systems for this report. Section 7-208 Reclamation Minimal disturbance is anticipated as a result of the proposed ADU. The driveway is already in place and the dwelling unit disturbance area is expected to be similar to that of a single family dwelling unit. The applicant has indicated that any disruption to surface areas will be restored to their natural or landscaped state. Article 7, Division 3, Site Planning and Development Standards Section 7-301 Compatible Design The design of development associated with the land use change shall be compatible with the existing character of adjacent uses and has been approved by the Homeowner's Association. Section 7-302 Off- Street Parking and Loading Standards: The Applicant has demonstrated that adequate off-street parking will exist for the ADU and primary dwelling unit. As the ADU will not be a leasable unit as per HOA covenants, off-street parking impacts will be minimal. Sections 7-303 Landscaping Standards: The LUDC specifically exempts ADUs from Landscaping Standards. Section 7-304 Lighting: Applicant has indicated that exterior lighting will match that of the primary dwelling unit and fall within HOA covenant design requirements. Staff recommends a condition of approval that any exterior lighting comply with the County standards outlined in Section 7-304. Section 7-305 Snow Storage Standards: Applicant has indicated that snow storage will be onsite and within property boundaries. Section 7-306 Trail and Walkway Standards: No recreational or community facility access areas are proposed. Article 7, Division 701, Accessory Dwelling Unit Section 7-701.A Maximum Floor Area: As the property is over 4 acres, the ADU is limited to 3,000 square feet. Applicant has indicated that the ADU will be 1,700 square feet. Section 7-701.B. Ownership Restriction: The Applicant understands that the ADU is restricted to leasehold interests and may be used for residential or Home Office/Business purposes only. 11 Section 7-701.C. Compliance with Building Code: The Applicant has represented that the ADU will comply with all building codes. Staff recommends a condition of approval requiring the Applicant to obtain all necessary building permits from Garfield County. Section 7-701.D. Minimum Lot Area: The Applicant has 36.401 acres and as a result satisfies the 2 acres minimum lot size requirement in the Rural zone district. Section 7-701.E. Entrance to Dwelling Unit: The Applicant is proposing the ADU to be a separate building from the primary dwelling unit. As a result, the ADU as it exists will comply with this standard. Vi. RECOMMENDED MOMS AND 03101MONS Staff recommends a finding that proposed Accessory Dwelling Unit is in conformance with the Comprehensive Plan of 2030 as well as the Land Use and Development Code as amended and is recommended for Administrative Approval by the Director of the Community Development Department subject to the following conditions of approval: Suggested Findings 1. That proper public notice was provided as required for the Director's Decision. 2. Consideration of the Application was extensive and complete, that all pertinent facts, matters and issues were submitted and that all interested parties were given an opportunity to provide input prior to the Director's decision. 3. That for the above stated and other reasons, the proposed amended plat is in the best interest of the health, safety, convenience, order, prosperity and welfare of the citizens of Garfield County. 4. That the application is in general conformance with the 2030 Comprehensive Plan, as amended. 5. That with the adoption of conditions and for the above stated and other reasons the application has adequately met the requirements of the Garfield County Land Use and Development Code, as amended. Recommended Conditions of Approval Conditions Prior to Issuance of the Land Use Change Permit: 1. Prior to the issuance of the Land Use Change Permit, the applicant shall submit a pump test that meets the standards in Section 4-203(M)(1)(b)(5)(a). The pump test shall be 12 reviewed and accepted by the Community Development Department and the County designated engineer. 2. Prior to the issuance of the Land Use Change Permit, the applicant shall submit a water quality test that meets the standards in Section 4-203(M)(1)(5)(c). The water quality test shall be reviewed and accepted by the Community Development Department and the County designated engineer. 3. Prior to the issuance of the Land Use Change Permit, the applicant shall submit a grading and drainage plan from a qualified professional verifying that the proposed grading and drainage is practical. Operational Conditions 4. All representations of the Applicant contained in the Application submittals shall be conditions of approval unless specifically amended or modified by the Board of County Commissioners or the Community Development Director. 5. The Applicant shall comply with Additional Standards for Residential Uses contained in Section 7-701, Accessory Dwelling Units, of the Land Use and Development Code of 2013, as amended. 6. The Floor Area for the Accessory Dwelling Unit shall not exceed 3,000 square feet. 7. The ADU shall be subject to all Garfield County Building Code Requirements. The property owner shall obtain all necessary Garfield County Building Permits. 8. The ADU is restricted to leasehold interest in the dwelling unit and is for residential or Home Office/Business use only, as described in the Land Use and Development Code of 2013, as amended. 9. All exterior lighting shall be downcast and shielded and comply with Section 7-304, Lighting Standards, of the Land Use and Development Code of 2013, as amended. 10. Due to very high wildfire susceptibility in the area where the ADU is to be constructed, the roof materials of the ADU structure shall be comprised of a noncombustible material. 13 Exhibit 7 Tune 7, 2018 Ms. Claire Dalby Garfield County Planning 108 801 Street, Suite 401 Glenwood Springs, CO 81601 RE: Schrock ADU Application: GAPA-05-18-8624 Dear Claire: MOUNTAIN CROSS ENGINEERING, INC. Civil and Environmental Consulting and Design This office has performed a review of the documents provided for the Schrock ADU Application. The submittals were found to be thorough and well organized. The review generated the following comment: 1. The Applicant should evaluate the physical features of the existing driveway construction and compare that to the applicable Roadway Standards of Garfield County. 2. The Applicant will need to provide a 4 -hour pump test with recovery date for the well. 3. The Applicant should provide water quality testing that meets the requirements of Garfield County. 4. The Applicant should verify that there are no wildfire hazards. The ADU may require wildfire mitigation of existing vegetation during construction. 5. It appears that the proposed ADU will conflict with the existing drainage and the existing culvert. The drainage shown in the application materials proposes that the drainage is to be diverted around the ADU. However, this would divert the water into the hillside. The Applicant should verify that the drainage and grading that is proposed is practical and otherwise develop alternatives that are more feasible. Feel free to call if you have any questions or comments. Sincerely, Mountaii Cross Engi eering, Inc. ChYi Hale, PE 826 1/2 Grand Avenue, Glenwood Springs, CO 81601 P: 970.945.5544 F: 970.945.5558 www.mountaincross-eng.com COLORADO Division of Water Resources Department of Natural Resources 1313 Sherman Street, Room 821 Denver, CO 80203 MEMORANDUM Exhibit 8 Date: May 24, 2018 To: Clair Dalby, Garfield County, Community Development Department From: Justina P. Mickelson, Physical Science Researcher Scientist Re: Schrock Accessory Dwelling Unit; GAPA-05-18-8624 We have reviewed the proposal to construct an Accessory Dwelling Unit (ADU) with a garage on a parcel of approximately 36.401 acres in size, described as lot 3 Faranhyll Ranch, located in part of Sections 9 and 10, Township 7 South, Range 89 West of the 6th P.M, at 55 Faranhyll Ranch Road, Glenwood Springs. The property currently has an existing single family residence, access road and utilities in place. The applicant does not propose to create a new lot or change the size of the existing lot. The current water supply to the parcel is provided by an existing well and the applicant proposes to utilize the onsite wastewater treatment system for the ADU. According to the applicant's submittal, well permit no. 281229 services the existing residence and will service the proposed ADU. Well permit no. 281229 was issued on July 21, 2009 as the only well on a tract of land of 36.141 acres described as lot 3, Faranhyll Ranch division of land, located in the NWY4 of the SW1/4 of Section 10, Township 7 South, Range 89 West of the 6th RM. The use of groundwater from the well is limited to fire protection, ordinary household purposes inside 3 single family dwellings, the watering of poultry, domestic animals and livestock on farm or ranch and the irrigation of not more than 1 acre of home lawn and gardens. The pumping rate shall not exceed 15 gpm. The well was constructed on August 28, 2009. The permit is valid for those uses listed above. The applicant's proposal indicates that the well currently serves a single family residence. The proposed ADU would be considered, for the purposes of well permitting, to be an additional single family dwelling. As long as the uses of the well do not exceed those allowed under the permit, in particular no more than three single family dwellings, this office has no objection to the well also serving the proposed ADU. Please feel free to contact me at 303-866-3581 if you or the applicant has any questions. 1313 Sherman Street, Room 821, Denver, CO 80203 P 303.866.3581 F 303.866.3589 www.water.state.co.us From: Andy Schwaller Exhibit 9 To: Claire Dalbv Subject: RE: Garfield County Referral Request - Schrock ADU Land Use Change Application File No. GAPA-05-18-8644 Date: Thursday, May 17, 2018 3:57:39 PM Attachments: Unage001.ong Hi Claire, Everything appears to be in order with the septic. They will need a septic permit to install a new septic tank for the ADU. The ADU structure itself will need to meet the 2015 IRC and will require a building permit. Let me know if you are familiar with septic systems. If not, I can spend some time to explain- until your eyes roll back into your head. Andy From: Claire Dalby Sent: Thursday, May 17, 2018 3:14 PM To: Kelly Cave <kcave@garfield county.com>; Andy Schwaller <aschwaller@garfield-county.com>; Morgan Hill <mhill@garfield-county.com>; Michael Prehm <mprehm@garfield-county.com>; Dan Goin <dgoin@garfield-counly.com>; Steve Anthony <santhony@garfield-county.corn>; megan.sullivan@state.co.us; chris@mountaincross-eng.com; greg.bak@cogs.us Subject: Garfield County Referral Request - Schrock ADU Land Use Change Application File No. GAPA-05-18-8644 Good Afternoon, Garfield County Community Development is requesting referral comments for an application submitted by Randy and Kathryn Schrock for an Administrative Review for a Land Use Change Permit. The property is located at 55 Faranhyll Ranch Road, approximately 2.8 miles south of Glenwood Springs. The applicant is requesting a Land Use Change Permit to allow for the construction of a 1,700 square foot accessory dwelling unit within the building envelope of the property. The parcel is zoned Rural. The link to the application is available here. Garfield County Community Development is requesting any referral comments by Thursday, June 7th, 2018. Thanks for your review and please contact me with any questions. Sincerely, Claire Dalby Claire Dalby, Planner Exhibit 10 Garfield County Re: Schrock ADU 55 Faranhyll Ranch Road Glenwood Springs, CO 81601 Road & Bridge May 21, 2018 Garfield County Road & Bridge have no concerns with this application. The said address is in a subdivision not maintained by Road and Bridge. No impact to any county road are anticipated from this proposal. No permits are required from Garfield County Road & Bridge. Any questions or concerns please contact us. Mike Prehm Foreman/R&B 0298 CR 333A Rifle, CO 81650 (970) 625-8601 Office September 29, 2014 Rock Leonard 580 Main Street Carbondale Colorado 81623 Exhibit 11 RE: AS -BUILT, On-site Wastewater Treatment System (OWTS), Parcel 3, Faranhyll Ranch SE Project No. 14033.02, Parcel Number: 239510300132 Rock: Pursuant to County requirements, this letter provides documentation that the new Onsite Wastewater Treatment Systems (OWTS) recently installed at the above referenced site is in compliance with the permitted designs. Sopris Engineering inspected the excavations, soils, materials and the installation of the system components at various times during construction, prior to final backfill and after all installations was complete. The OWTS constructed on site consisted of a new treatment/absorption field, septic tank, distribution piping and distribution box. The OWTS was designed and built to serve the needs of the new 3 -bedroom residential structure. Sopris Engineering performed several visits to inspect and document the as built conditions of the constructed system. We have coordinated our efforts with the earthmoving contractor that modified and constructed the new system components. The as built conditions and installation of the new OWTS components is in compliance with Garfield County Regulations and the design presented in the Sopris Engineering design drawing, dated April 16, 2014. An As -built OWTS record drawing is attached delineating the As -built descriptions and location of the components. As -built System Component Installation A new two chamber 1000 gallon concrete septic tank, two geotextile sand filter (GSF) beds and a distribution box were installed within the approved activity envelope. The septic tank access openings were fitted with concrete risers and lids at the surface. A 4" effluent filter was installed in the tank outlet sanitary tee. The tank is watertight and was set level. A cleanout is installed on the sewage tine off the exterior wall of the residence. Treatment/Absorption field: The installed treatment/absorption field contains 30 In Drain units (model EL00924) with four GSF rows containing 6 units per row. The Elgen In -Drain units were placed at 4 feet on center over a 12 -inch deep filter sand layer (concrete sand) bed approximately 30 feet long by 18 feet wide. The bed has an average excavation depth of 30 to 36 inches from finish grade and was constructed level. Effluent from the septic tank discharges to an 8 port concrete distribution box, installed with risers and access lid at the finish surface grade. Four individual distribution lines are installed to the head of each GSF row to equally distribute effluent through the perforated distribution laterals installed on the top of each row of In -Drain units. The 4" SDR -35 lateral pipe, installed level, runs the full length of the GSF row and is capped with a swept 90 degree fitting and inspection port pipe riser on each end. A 4" vertical piezometer inspection port is installed near the corner of the bed opposite the D -Box. A subsurface soil investigation was performed by HP Geotechnical and USDA soil texture method tests were performed by Sopris Engineering in the area of the new proposed secondary treatment absorption 502 Main Street • Suite A3 0 Carbondale, CO 81623 0 (970) 704-0311 0 Fax (970) 704-0313 SOrilis ENGINEERIHG • LLC civil consultants AS -BUILT OWTS, Parcel 3, Faranhyll Ranch SE Job No. 14033.02 September 29, 2014 Page 2 fields. Three percolation test holes and one profile pits was excavated by a backhoe approximately 8 feet deep to allow observation of the soils in the area of the proposed field. The average percolation rate was calculated to be 23 mpi. The soils below 1 to 1 1/2 feet of topsoil consist of sandy clayey loam material (USDA: loam, Soil type 2). No free water was encountered in the exploration pit. Groundwater levels are expected to be below a minimum of 10 feet from the existing surface grades. The soils are suitable for treatment/absorption beds. The soils in the excavations at the sand soil interface were tested by the engineer and confirmed to be consistent with the geotechnical description and characterized as loam. OWS Operation and Maintenance Ownership of the system and responsibility for maintenance and repair will remain with the property Owner. The owner is responsible for maintaining suitable vegetative cover on the beds. The components of the OWS system should inspected within 30 days of being placed into operation and should been inspected and maintained bi-annually. The tank, absorption field and other system components should be visually inspected annually. In general, for a properly utilized system, septic tanks should be pumped every 3 - 4 years. The effluent filter should be cleaned annually and at the time of pumping. Absorption fields should be maintained with suitable vegetative cover and kept free of root invasive plants. Positive surface drainage away from the absorption field should be maintained. If you have any question or need any additional information, please cal Sincerely, SOPRIS ENGINEERING, LLC Paul Rutledge Yancy Design Engineer Principa Cc: Garfield County Building Department �.r �'} if. �!i