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HomeMy WebLinkAbout1.0 APPLICATIONSEATON SUBDIVISION COMBINED PRELIMINARY PLAN & FINAL PLAT APPLICATION TABLE OF CONTENTS (ITEMS IN BOLD ITALIC ARE NEW OR REVISED FROM PREVIOUS SUBMITTAL) ITEM 1. Pre Application Conference Summary 2. Authorization Letter 3. Erosion Control Plan 4. Land Suitability Analysis 5. Impact Analysis 6. Visual Analysis 7. Article VII Division 1 -General Approval Stds for Land Use Change Permits 8. Article VII Division 2 -General Resource Protection Stds for Land Use Change Permits SCHEDULE OF EXHIBITS Exhibit A - Vicinity, Parcel/Adjacent Owners, Zoning, Traffic, Site Plan, Final Plat, Preliminary Plat Exhibit B - Soil Study Exhibit C — New Well Permit, Existing Well & Septic Permits Exhibit D - Wildlife Checklist, Vegetation Management Plan, Cultural Resource Study Exhibit E - Road & Well Sharing Agreements, Title Commitment, Mineral Ownership GARFIELD COUNTY Building & Planning Department 108 8th Street, Suite 401 Glenwood Springs, Colorado 81601 Telephone: 970.945.8212 Facsimile: 970.384.3470 www.garfield-county.corrm RECF 'ED JAr! ) 4?710 UNTY NNING SUBDIVISION APPLICATION (CHECK THE BOX THAT APPLIES) ❑ SKETCH PLAN (optional) ❑ CONSERVATION SUBDIVISION ❑ PRELIMINARY PLAN ❑ PRELIMINARY PLAN AMENDMENT O FINAL PLAT ❑ FINAL PLAT AMENDMENT / CORRECTION PLAT © COMBINED PRELIMINARY PLAN & FINAL PLAT GARFIELD CC BUILDING & PLP GENERAL INFORMATION (Please print legibly) • Name of Property Owner: Don & Nanette Seaton Mailing Address: 411 Cour&v Rd, 1_1_7 Telephone: ( 727) 743-8218 • City:Glenwood Springs State: CO Zip Code: $1541 Cell: ( ) > E-mail address: seatondAmindsprincQcom FAX: (727) 443-3525 Name of Owner's Representative, if any, (Attorney, Planner, Consultant, etc): • Boundaries Unlimited. Inc. • Mailing Address: a23_alak Ave" _1D _ Telephone: (970) 945-5252 • City: Glenwood Springs State: G _ Zip Code: 81601_ Cell: ( ) • E-mail address: dericCa7bu-inc.com _ FAX: (970) 384-2833 y Location of Property: Section 3 Township 7 Range_ 89 > Assessor's Parcel Number: 2395 - 033 - 00 - 031 -- -- -- -- -- > Practical Location 1 Address of Property: 4151 Ggunt_v Rd. 117 Glenwood Springs CO 81601 > Current Size of Property to be Subdivided (in acres): 13.22 • Number of Tracts / Lots Created within the Proposed Subdivision: 2 Last Revised 12124108 GENERAL_ INFORMATION continued... Proposed Water Source: Waft_ Proposed Method of Sewage Disposal: ISDS Proposed Public Access VIA: County Rd. 117 E=asements: Utility: Ditch: Total Development Area (fill in the appropriate boxes below): .(1) Residential Units 1 Lotsx= Size (Acres) Parking Provided >; Single Family�r5' 1 �'hY xl .%T�sy 2 13.22 4 y�Mult! Fahilly„`'1! L t, 1 4k ' 5.444.4- elf f,fitP: „``'' .riVA ,, v . obile Home 3, ^kN1'4C , =its 4-,s ATTR .V !€s, 3, f Total 2 13.22 8 ' ° 'Floreaor'A(sq ft) Size (Acres) Parking Provided: (2) Commercial 3 Industrial$ : :kfiE,. (4) Public 1 Quasi Public” '_ .„A t.*.op 3F. 3.: -.:fir iVi!pi.4.i tli}. .ieY .y'_..- (5) Onen S»ace'/ Common `Area• , 2,` -tic 'C 7,:F *t: :°;+:• J !r ;, i.: f4- r Yt ; Total The following general application materials are required for all types of subdivisions in Garfield County. Application materials that are specific to an individual application type (Conservation Subdivision, Preliminary Plan, etc.) are detailed in Section 5-501 of Article V of the Unified Land Use Resolution (ULUR) of 2008. 1. Submit a completed and signed Application Form, an application fee, and a signed Agreement for Payment form. 2. A narrative explaining the purpose of the application and supporting materials that address the standards and criteria found in Article VII of the Unified Land Use Resolution of 2008. 3. Copy of the deed showing ownership. Additionally, submit a letter from the property owner(s) if the owner is being represented by another party other than the owner. If the property is owned by a corporate entity (such as an LLC, LLLP, etc.) please submit a copy of recorded ” Statement of Authority" demonstrating that the person signing the application has the authority to act in that capacity for the entity. 2 Garfield County Re: Seaton Subdivision, Subdivision Application Jan. 11, 2010 Page 2 of 4 5. Open Space Plan: An opens space plan was deemed unnecessary. Approximately 11.02 of the 13.16 acres of land will remain as open space. The remaining 2.136 acres is to be used as "usable" space that was developed in accordance with Section 3-201.C, Article III of the Garfield County Unified Land Use Resolution of 2008. 6. Open Space Management Plan: Open space on the property shall be maintained by the property owner of each parcel. 7. Landscape Plan: No common ownership areas are proposed with this subdivision; therefore a landscape plan for common ownership areas is not applicable. 8. Impact Analysis: In accordance with Section 4-502.E, Article IV of the Garfield County Unified Land Use Resolution of 2008, an Impact Analysis has been completed and is enclosed as Item 4. 9. Land Suitability Analysis: Due to the minimal site development proposed with this subdivision, a land suitability analysis was deemed unnecessary and would be redundant with the impact analysis. 10. Lighting Plan: No common open space is proposed with this subdivision; therefore a lighting plan for such areas is not needed. 11. Visual Analysis: In accordance with Section 5-502.G, Article V of the Garfield County Unified Land Use Resolution of 2008, a Visual Analysis has been completed and is enclosed as Item 5. No proposed development is anticipated at this time and therefore a good illustration of such was not possible. The Visual analysis illustrates existing conditions of the property and gives insight to the impacts and mitigations for any future building on the property. 12. Preliminary Report and Plans: a. No streets, trails, walkways and bikeways are proposed with this plan. Red Barn Lane has already been constructed and conforms to current Garfield County Standards, which provides access to both Parcel A and Parcel B. b. The property has already been developed and no additional engineering design and construction features for any structures to be constructed are necessary for compliance to County Standards. A copy of a Garfield County special use permit that was applied for 823 Blake Ave. 1 Ste 102 1 Glenwood Springs l CO 81601 I Ph 970.945.5252 1 Fax 970.384.2833 Garfield County Re: Seaton Subdivision, Subdivision Application Jan. 11, 2010 Page 3 of 4 when construction of the bridge across Four -Mile Creek was built has been enclosed with Item 3. c. Geologic hazards have been addressed in the Impact Analysis, enclosed as Item 4. A steep hillside on the west side of Four -Mile Creek creates a potential rock fall hazard. Although no future building is anticipated within this hazard area an engineered rock barrier may be the best means to mitigate this hazard. d. Two septic systems have already been established and approved by Garfield County; therefore a plan of this system is not needed. Future building on Parcel B may require connection to the current system but shall be designed for at the time of development. e. In accordance with section 4-502.C.4 Article IV of the Garfield County Unified Land Use Resolution of 2008, an Erosion & Sediment Control Plan has been enclosed as Item 3. Erosion & sediment control will primarily be needed when future building an Parcel B is developed. No erosion & sediment control measures shall be needed at this time. f. A copy of the current well permit has been enclosed in Exhibit C. Connection to this well has already been established for both Parcels, therefore no water supply plan is needed. g. Current ISDS systems are in place for both parcels. A copy of the ISDS permits have been included in Exhibit C. Future building on Parcel B may require a new ISDS system and shall be designed and applied for at the time of development. 13. Improvements Agreement, Covenants And restrictions & By -Laws: Because all public improvements for this subdivision have already been constructed, no improvements agreement is required. No owners association or covenants are planned. A copy of a Well Sharing Agreement and a Road Sharing Agreements are attached in Exhibit E. Final Plat Review Process: 1. Application Forms & Fees: See Section 1 of the Preliminary Plan Review Process. 2. Vicinity Map: See Section 2 of the Preliminary Plan Review Process. 3. Final Plat Map: See Section 3 of the Preliminary Plan Review Process. 4. Final Engineering Report and Plans: a. See Section 12a of the Preliminary Plan Review Process. b. See Section 12b of the Preliminary Plan Review Process. c. See Section 12c of the Preliminary Plan Review Process. d. See Section 12d of the Preliminary Plan Review Process. 823 Slake Ave. I Ste 102 1 Glenwood Springs 1 CO 81601 1 Ph 970.945.5252 1 Fax 970.384.2833 Garfield County Re: Seaton Subdivision, Subdivision Application Jan. 11, 2010 Page 4 of 4 e. No immediate soil suitability issues are present. See Item 4 section E4 for further information. An in depth soil study can be found in Exhibit 6 entitled "Subsoil Study for Foundation Design" prepared by Chen Northern, Inc. dated 11-3-92. f. No groudwater drainage improvements are proposed due to the limited nature of improvements proposed for this subdivision. See item 4 section E7 for further information. g. See Section 12e of the Preliminary Plan Review Process. h. No public improvements are required to facilitate this subdivision; therefore a cost estimate of such improvements is not necessary. i. A title commitment describing the encumbrances on the property is has been enclosed in Exhibit E 5. Landscape Plan: See Section 7 of the Preliminary Plan Review Process. 6. Open Space Plan: See Section 5 of the Preliminary Plan Review Process. 7. Open Space Management Plan: See Section 6 of the Preliminary Plan Review Process. 8. Improvements Agreement: See Section 13 of the Preliminary Plan Review Process. 9. Letter of intent for service from utility providers: All utility services have been established; therefore a letter of intent for such services shall not be necessary. 10. Final declaration of Covenants And restrictions & By -Laws: See Section 13 of the Preliminary Plan Review Process. Thank you for your review and consideration. If you have any additional questions, please feel free to call me at (970) 945-5252. Sincerely, BOUNDARIES UNLIMITED, INC. Deric Walter Project Engineer 823 Blake Ave. I Ste 102 I Glenwood Springs 1 CO 81601 1 Ph 970.945.5252 1 Fax 970.384.2833 4. Submit a copy of the appropriate portion of a Garfield County Assessor's Map showing the subject property and all public and private landowners adjacent to your property (which should be delineated). In addition, submit a list of all property owners, private and public, and their addresses adjacent to or within 200 ft. of the site. This information can be obtained from the County Assessor's Office. You will also need the names (if applicable) of all mineral interest owners of the subject property, identified in the County Clerk and Recorder's records in accordance with §24-65.5-101, et seq. (That information may be found in your title policy under Exceptions to Title). 5. Vicinity map: An 8 1/2 x 11 vicinity map locating the parcel in the County. The vicinity map shall clearly show the boundaries of the subject property and all property within a 3 -mile radius of the subject property. The map shall be at a minimum scale of 1"=2000' showing the general topographic and geographic relation of the proposed exemption to the surrounding area for which a copy of U.S.G.S. quadrangle map may be used. 6. A copy of the Pre -Application Conference form. 7. Submit 3 copies of this completed application and all the required submittal materials to the Building and Planning Department. Staff will request additional copies once the application has been deemed technically complete. The following section outlines and describes the subdivision processes for the variety of subdivision actions that are governed by the Board of County Commissioners by the Unified Land Use Resolution of 2008 (ULUR). Please refer to Article V in the regulations themselves for a higher level of detail. I. THE SKETCH PLAN The sketch plan process (more fully defined in Article V, Section 5-301 of the ULUR) is an optional plan review process intended to review at a conceptual level the feasibility and design characteristics of the proposed division of land. The Yield Plan Review process, set forth in Section 5-309, may be combined with Sketch Plan Review for applications proposing Conservation Subdivision. A. Process: The Sketch Plan Review process shall consist of the following procedures and as more fully described in Article V, Section 5-301 of the ULUR: 1. Application 2. Determination of Completeness 3. Evaluation by Director/Staff Review 4. Review by Planning Commission B. Application Materials: The Sketch Plan review process is set forth in Article V, Section 5-301 of the ULUR, Sketch Plan Review and requires the following materials. 1. Application Form and Fees 2. Vicinity Map (5-502(C)(2)) 3. Yield Plan (required for Conservation Subdivision) 4. Sketch Plan Map (5-502(C)(2)) 5. Land Suitability Analysis (4-502(D)) 3 II. THE CONSERVATION SUBDIVISION The Conservation Subdivision (as described in Article V, Section 5-308 of the ULUR) is a clustered residential development option that allows reduced lot size and provides density bonuses in exchange for preservation of rural lands through provision of open space. A Conservation Subdivision shall be designed as a Density Neutral Development Plan or an Increased Density Development Plan. The design standards for each development Plan option are set forth in Article VII, Section 7-501 of the ULUR. A. Process: Conservation Subdivision Review process is the same as the general subdivision process with the addition of the Yield -Plan Review. The overall Conservation Subdivision Process shall consist of the following procedures and as more fully described in Article V, Section 5-301 of the ULUR: 1. Pre -Application Conference 2. Sketch Plan (optional) 3. Yield Plan Review (Can be reviewed concurrently with Preliminary Plan) 4. Preliminary Plan Review 5, Final Plat Review B. Application Materials: The Conservation Subdivision review requires the following application materials that can found more fully described in Article V, Sections 5-502 and 7-501 of the ULUR: 1, Application Form and Fees 2. Sketch Plan (Optional) (5-501(J)) 3. Yield Plan (5-502(C)(8)) 4. Preliminary Plan (5-501(G)) 5. Final Plat (5-501(E)) 6. Narrative addressing Design Standards (7-501 through 7-503) III. THE PRELIMINARY PLAN The preliminary plan review process will review the feasibility and design characteristics of the proposed subdivision based on the standards set forth in Article VII, Standards. The preliminary plan process will also evaluate preliminary engineering design. The Director may allow the preliminary plan and the final plat process to be combined if the proposed subdivision has seven (7) parcels or less and development of the lots does not require extensive engineering. A. Process: Preliminary Plan Review process shall consist of the following procedures and as more fully described in Article V, Section 5-303(B) of the ULUR: 1. Pre -Application Conference 2. Determination of Completeness 3. Evaluation by Director/Staff Review 4 4. Public Hearing and Recommendation by Planning Commission 5. Public Hearing and Decision by Board of County Commissioners B. Application Materials: The Preliminary Plan review requires the following application materials as more fully described in Article V, Section 5-502: 1. Application Form and Fees 2. Preliminary Plan Map 3. Yield Plan (Conservation Subdivision only) 4. Open Space Plan, preliminary 5. Open Space Management Plan 6. Landscape Plan (Common Ownership Areas) 7. Impact Analysis 8. Land Suitability Analysis 9. Lighting Plan consistent with standards in 7-305 10. Visual Analysis 11. Preliminary Engineering Reports and Plans a) streets, trails, walkways and bikeways b) engineering design and construction features for any bridges, culverts or other drainage structures to be constructed c) identification and mitigation of geologic hazards d) sewage collection, and water supply and distribution system e) Erosion and Sediment Control Plan f) Water Supply Plan g) Sanitary Sewage Disposal Plan 12. Draft Improvements Agreement, Covenants and Restrictions and By-laws IV. THE PRELIMINARY PLAN AMENDMENT Any proposal to change a preliminary plan approved under these Regulations shall require application to the Director for Amendment of an Approved Preliminary Plan. The Director shall review the application to determine whether the proposed change constitutes a substantial modification to the approved plan as more fully described in Article V, Section 5- 304. (A substantial modification is defined as a Substantial Change in Article XVI: Definitions) A. Outline of Process. The review process for a proposed Amendment of an Approved Preliminary Plan shall consist of the following procedures. 1. Pre -Application Conference 2. Application 3. Determination of Completeness 4. Evaluation by Director/Staff Review 5. Decision by Director B. Application Materials: The Preliminary Plan Amendment review requires the following application materials as more fully described in Article V, Section 5-501(H): 5 1. Application Form 2. Written Statement of proposed amendment(s) 3. Supporting documents necessary to evaluate the proposed revision(s) V. THE FINAL PLAT REVIEW Unless otherwise provided by these Regulations, the applicant must receive preliminary plan approval before beginning the final plat process. The final plat review is to formally finalize the actions resultant from the preliminary plan in order to complete the subdivision process. A. Outline of Process. The Final Plat Review process shall consist of the following procedures: 1. Application 2. Determination of Completeness 3. Evaluation by Director/Staff Review 4. Review and Action by Board of County Commissioners 5. Recordation of Plat B. Application Materials: The Final Plat review requires the following application materials as more fully described in Article V, Section 5-502: 1. Application Form and Fee 2. Final Plat 3. Final Engineering Reports and Plans a) Streets, trails, walkways and bikeways b) Engineering design and construction features for any bridges, culverts or other drainage structures to be constructed c) Mitigation of geologic hazards d) Sewage collection, and water supply and distribution system e) Soil suitability information f) Groundwater drainage g) Erosion and Sediment Control Plan (4-602 C. 4.) h) Final cost estimates for public improvements i) The certification listing all mortgages, liens judgments, easements, contracts, and agreements of record regarding the land to be platted and the Board of County Commissioners may require, at its discretion, that the holders of such mortgages, liens, judgments, easements, contracts or agreements shall be required to join in and approve the application for Final Plat approval before such Final Plat is accepted for review. All other exceptions from title shall be delineated. 4. Landscape Plan (Common Area) (4-602 5.) 5. Open Space Plan (if applicable) 6. Open Space Management Plan (If applicable) 6 7. Improvements Agreement, if applicable [include record drawings in digital format, (4-602 J.)] 8. Letter of Intent for service from all of the utility service providers a) Contract for Service, required prior to Final Plat recordation. 9. Final Declarations of Covenants and Restrictions, HOA articles of incorporation and bylaws 10. Final Fees to be paid (School -Land Dedication / Traffic Impact Fees) VL THE FINAL PLAT AMENDMENT / CORRECTION PLAT REVIEW The purpose of the Final Plat Amendment review is to allow for certain amendments to an approved Final Plat. An amendment may be made to a recorded Final Plat if such amendment does not increase the number of subdivision lots or result in a major relocation of a road or add one or more new roads (pursuant to Section 5-306). A correction can be made to a recorded plat in order to correct an engineering error, mislabeling issue, etc. that does not affect the substance of the plat. A. Outline of Processes. The review processes for amending a Final Plat or an Exemption Plat shall consist of the following regardless of whether the division was initially approved as a subdivision or an Exemption: 1. Four (4) Subdivision Lots: The Administrative Review Process, detailed in Section 4-104 of Article IV, shall be used for review of a request to amend or correct a Final Plat modifying lot lines, building envelopes, easement locations or other interests affecting up to four (4) subdivision lots. An Amended Final Plat or an Amended Exemption Plat which modifies lot lines or easements affecting not more than two (2) adjacent lots or Exemption Lots or a single building envelope shall be subject to the Administrative Review Process set forth in Section 4-104 of Article IV, with the addition of presentation of the Amended Plat to the Board of County Commissioners for signature, prior to recording with the Office of the Clerk and Recorder. 2. More Than Four Lots: The Major Exemption Review Process, detailed in Section 5-403, shall be used to amend a Final Plat or an Exemption Plat modifying lot lines, building envelopes, easement locations or other interests affecting more four (4) subdivision lots or Exemption Lots. An Amended Final Plat which modifies lot lines or easements affecting more than four (4) subdivision lots or more than one (1) building envelope shall be subject to the Major Exemption Review Process set forth in Section 5-403. B. Application Materials: The Final Plat Amendment / Corrected Plat review requires the following application materials as more fully described in Article V, Section 5-502: 1. Application Form and Fee 2. Preliminary Plan (5-501(G)) 7 3. Final Plat, Amended Final Plat 4. Subdivision Improvement Agreement, if necessary The Director may allow the Preliminary Plan and the Final Plat process to be combined if the proposed subdivision has seven (7) parcels or less and development of the lots does not require extensive engineering. (Section 5-303) No submittal of a combined application shall be allowed until the Director has made a determination after holding a pre -application conference. I have read the statements above and have provided the required attached information which i correct aid accurate to the best of my knowledge. T1s (Signature of Property Owner) Date 8 GARFIELD COUNTY BUILDING AND PLANNING DEPARTMENT PAYMENT AGREEMENT FORM (Shall be submitted with application) GARFIELD COUNTY (hereinafter COUNTY) and Don Seaton Property Owner (hereinafter OWNER) agree as follows: 1. OWNER has submitted to COUNTY an application for Seaton Subdivsion (hereinafter, THE PROJECT). 2. OWNER understands and agrees that Garfield County Resolution No. 98-09, as amended, establishes a fee schedule for each type of subdivision or land use review applications, and the guidelines for the administration of the fee structure. 3. OWNER and COUNTY agree that because of the size, nature or scope of the proposed project, it is not possible at this time to ascertain the full extent of the costs involved in processing the application. OWNER agrees to make payment of the Base Fee, established for the PROJECT, and to thereafter permit additional costs to be billed to OWNER. OWNER agrees to make additional payments upon notification by the COUNTY when they are necessary as costs are incurred. 4. The Base Fee shall be in addition to and exclusive of any cost for publication or cost of consulting service determined necessary by the Board of County Commissioners for the consideration of an application or additional COUNTY staff time or expense not covered by the Base Fee. If actual recorded costs exceed the initial Base Fee, OWNER shall pay additional billings to COUNTY to reimburse the COUNTY for the processing of the PROJECT mentioned above. OWNER acknowledges that all billing shall be paid prior to the final consideration by the COUNTY of any land use permit, zoning amendment, or subdivision plan. PROPERTY OWNER (OR AUTHORIZED REPRESENTATIVE) C6411 4. Signature Date DbH L. Si 4Ta►k Print Name Mailing Address: Page 4 COLORADO GEOLOGICAL SURVEY SUBMITTAL FORM FOR LAND -USE REVIEWS County GARFIELD Project Name SEATON SUBDIVISION Date OCTOBER, 2009 APPLICANT (or Applicant's Authorized Representative responsible for paying CGS -review fee) Name DON SEATON Address 4151 COUNTY RD. #117 GLENWOOD SPRINGS, CO 81601 Ph. No. 727-743-8208 Fax No. 727-443-3525 114,112, or1/41/4 W1I2 SW1r4 Section(s) 3 Township 7 S Range 89 w Dec Lat 39.471 Dec Long -107.321__ FEE SCHEDULE (effective June 1, 2009) Reviews for Counties Small Subdivision (> 3 dwellings and < 100 acres) $950 Large Subdivision (> 100 acres and < 500 acres) $1,550 Very Large Subdivision (500 acres or more) $2,500 Very small residential subdivisions (1-3 dwellings and < 100 acres) $600 Reviews for Municipalities At hourly rate of reviewer Special Reviews At hourly rate of reviewer School Site Reviews $855 CGS LAND USE REVIEWS Geological studies are required by Colorado counties for all subdivisions of unincorpo- rated land into parcels of Iess than 35 acres, under State statute C.R.S. 30-28-136 (1) (i) (Senate Bill 35, 1972). Some Colorado municipalities require geological studies for sub- division of incorporated land. In addition, Local governments are empowered to regu- late development activities in hazardous or mineral -resource areas under C.R.S. 24-65.1- 101 et seq. (House Bill 1041, 1974) and C.R.S. 34-1-301 et seq. (House Bill 1529, 1973), respectively. Local -government agencies submit proposed subdivision applications and supporting technical reports to the Colorado Geological Survey "...for evaluation of those geologic factors which would have significant impact on the proposed use of the land," in accor- dance with State statutes. The CGS reviews the submitted documents and serves as a technical advisor to Iocal-government planning agencies during the planning process. Since 1984, the CGS has been required by law to recover the full direct cost of perform- ing such reviews. The adequate knowledge of a site's geology is essential for any development project. It is needed at the start of the project in order to plan, design, and construct a safe devel- opment. Proper planning for geological conditions can help developers and future owners/users reduce unnecessary maintenance and/or repair costs. Colorado Geological Survey, 1313 Sherman Skeet, Room 715, Denver, CO 80203 ' Ph: 303-866-2611, Fax: 303-866-2461 httollceasurvev.slale.co.us creased 3!16/98. revised 423/09 Seaton Subdivision Garfield County, Colorado SUBDIVISION APPLICATION January 11, 2010 OWNERS/APPLICANT: Don & Nanette Seaton 4151 County Rd #117 Glenwood Springs, CO 81601 727.743.8208 PREPARED BY: Boundaries Unlimited Inc. 823 Blake Ave., Suite 102 Glenwood Springs, CO 81601 970.945.5252 SEATON SUBDIVISION COMBINED PRELIMINARY PLAN & FINAL PLAT APPLICATION TABLE OF CONTENTS ITEM 1. Pre Application Conference Summary 2. Authorization Letter 3. Erosion Control Plan 4. Land Suitability Analysis 5. Impact Analysis 6. Visual Analysis 7. Article VII Division 1 -General Approval Stds for Land Use Change Permits 8. Article VII Division 2 -General Resource Protection Stds for Land Use Change Permits SCHEDULE OF EXHIBITS Exhibit A - Vicinity, Parcel/Adjacent Owners, Zoning, Traffic, Site Plan, Final Plat, Preliminary Plat Exhibit B - Soil Study Exhibit C — New Well Permit, Existing Well & Septic Permits Exhibit D - Wildlife Checklist, Vegetation Management Plan, Cultural Resource Study Exhibit E - Road & Well Sharing Agreements, Title Commitment, Mineral Ownership GARFIELD COUNTY Building & Planning Department 108 8th Street, Suite 401 Glenwood Springs, Colorado 81601 Telephone: 970.945.8212 Facsimile: 970.384.3470 www.! arfield-countv.com REC1+,IVED JAN ) M?010 LJ COUNTY PRE -APPLICATION CONFERENCE SUMMARY PLANNER: Tom Veljic PROJECT: Preliminary Plan OWNER: Don Seaton PreApp DATE: September 4, 2009 PARCEL: 2395-033-00-031 ZONING: Rural REPRESENTATIVE: Deric Walter, PE/Boundaries Unlimited PRACTICAL LOCATION: Adjacent to and west of CR 117 north of Dry Park Road (CR -125) TYPE OF APPLICATION: Preliminary Plan for 2 lot subdivision GENERAL PROJECT DESCRIPTION — The site is located near the intersection of CR 117 and 125. Access to the site is provided with an existing drive access to CR 117; no new roads or drive access points are proposed. The lot contains an existing primary residence and also an approved Accessory Dwelling Unit. The intent is to divide the property into two lots. It appears that no site improvements are required. The parcel area is listed as 13 acres by the County Assessor's information. The site has an existing well serving both residential uses and two separate ISDS systems are installed. A Garfield County Subdivision Application is attached along with a map of the site and general area. The applicant did not propose ADUs for each lot during the PreApp discussion. A flood zone is shown on the FEMA flood maps and it crosses the eastern portion of the site. Ownership was stated as Don Seaton. The ownership was verified in the County Record. Both Mr. Seaton and his wife Nanette are shown as owners and application should contain the signatures of both owners. Lot sizes for the proposed Subdivision can be no smaller than 2 acres to meet the requirements of the Rural Zoning District and subdivision standards. I. REGULATORY PROVISIONS APPLICANT I5 REQUIRED TO ADDRESS: • Garfield County Comprehensive Plan • Garfield County Unified Land Use Resolution o Article III, Zoning • Urban Growth Area Overlay (Section 3-102 C) • Floodplain Overlay o Article IV, Application and Review Procedures (Section 4-103) • Development in the Floodplain ■ Application and Submittal Requirements ■ Document Content Requirements o Article V, Divisions of Land (Sections 5-105, 5-301, 5-303, 5-501, 5-502) o Article, VII, Standards ■ Standards for Subdivisions ■ Development in the Floodplain • Physical and Legal Water Supply (Sections 7-104 - 7-106) • Adequate location for on-site ISDS (Sections 7-106 - 7-107) • Adequate Fire Protection (7-403) • Adequate Road Access (7-108) • Article XVI Definitions II. PROCESS In summary, the process will be the following (4-101 A and 4-103): 1. Pre -application Meeting (held 914/2009) 2. Submittal of complete Subdivision Application 3. Review by staff for Technically Complete (TC) Status 4. Notice of TC to applicant with schedule; Applicant submits copies for referral to reviewing agencies 5. Applicant prepares public notice for advertising, mailing, and posting of site 6. Hearing scheduled for Planning Commission and copies sent to referring agencies and departments 7. Staff report preparation S. Following recommendation from the Planning Commission, a hearing is scheduled for Board of County Commissioners 9. Staff report preparation and Board of County Commissioners hearing for Preliminary Plan Submittal and Review with Decision by Board of County Commissioners III. APPLICATION REVIEW a. Review by: Staff for completeness recommendation and referral agencies for additional technical review b. Public Hearing: _X_ Planning Commission X_ Board of County Commissioners Board of Adjustment c. Referral Agencies: Garfield County Road and Bridge Garfield County Attorney Garfield County Public Health Garfield County Vegetation Management IV. APPLICATION REVIEW FEES a. Planning Review Fees: b. Referral Agency Fees: c. Total Deposit: Colorado Division of Water Resources School District Fire District City of Glenwood Springs $_675.00_ $^600.00_ (Separate Check, see attached fee schedule) $_1275.00 (additional hours are billed at $_40.50_ /hour) General Application Processing Planner reviews case for completeness and sends to referral agencies for comments. Case planner contacts applicant and sets up a site visit. Staff reviews application to determine if it meets standards of review. Case planner makes a recommendation of approval, approval with conditions, or denial to the appropriate hearing body. Disclaimer The foregoing summary is advisory in nature only and is not binding on the County. The summary is based on current zoning, which is subject to change in the future, and upon factual representations that may or may not be accurate. This summary does not create a legal or vested right. Pre -application Summary Prepared by: Nomas Veljic, AICP Senior Planner Attachments: Subdivision Application General Vicinity Map 767 Date 111111 BOUNDARIES UNLIMITED INC. cIvu & CoRsuttlng Engineers AUTORIZATION LETTER PROJECT: Seaton Subdivision ADDDRESS: 4151 County Rd 117 Glenwood Springs, CO 81601 Zoned: Rural LEGAL DESCRIPTION: COMMENCING AT THE SOUTHWEST CORNER OF SAID SECTION 3; THENCE N01 °01'32"W ALONG THE WEST LINE OF SAID SECTION 3, A DISTANCE OF 1190.63 FEET TO THE POINT OF BEGINNING; THENCE CONTINUING N01°0112"W ALONG SAID WEST LINE, A DISTANCE OF 412.99 MET TO A POINT ON THE NORTH LINE OF THE ODDO/SEATON BOUNDARY LINE ADJUSTMENT AS RECORDED UNDER RECEPTION NUMBER 565477 IN THE OFFICE OF THE GARFIELD COUNTY CLERIC AND RECORDER; THENCE N90°0000"E ALONG NORTH LINE OF SAID BOUNDARY LINE ADJUSTMENT, A DISTANCE OF 1036.75 FEET TO THE CENTERLINE OF FOUR MILE CREEK; THENCE NORTHERLY ALONG THE CENTERLINE OF FOUR MILE CREEK THE FOLLOWING FOUR (4) COURSES: 1)N 31040'48" E, A DISTANCE OF 19.40 FEET 2)N 47°08'54" E, A DISTANCE OF 41.71 FEET 3)N 13°35'14" W, A DISTANCE OF 52.92 FEET 4)N 37°2176" E, A DISTANCE OF 42.09 FEET TO A POINT ON THE SOUTHERLY RIGHT-OF-WAY OF COUNTY ROAD 149, AKA CHELYN ROAD; THENCE EASTERLY AND NORTHERLY ALONG SAID RIGHT-OF-WAY, THE FOLLOWING THREE (3) COURSES: 1)S 84°43'06" E, A DISTANCE OF 116.64 PEEL TO A POINT OF NON -TANGENT CURVE 2)ALONG THE ARC OF A CURVE TO THE LEFT WHOSE CENTER BEARS N09°4715"E, HAVING A DELTA OF 36°2076", RADIUS OF 173.50 FEET AND A LENGTH OF 110.04 FEET (TO A POINT OF COMPOUND CURVE 3)ALONG THE ARC OF A CURVE TO THE LEFT WHOSE CENTER BEARS N26°33'I 1 "W, HAVING A DELTA OF 44°111 4", A RADIUS OF 330.00 FEET AND A LENGTH OF 25430 FEET TO A POINT ON THE WESTERLY RIGHT- OF-WAY OF COUNTY ROAD 117, AKA FOUR MILE ROAD; THENCE SOUTHERLY AND WESTERLY ALONG THE WESTERLY RIGHT-OF-WAY THE FOLLOWING FOUR (4) COURSES; i )S 18°351W' W, A DISTANCE OF 170.36 FEEL' 2)S 31°09'12" W, A DISTANCE OF 465.29 FEET TO A POINT OF CURVE 3)ALONG THE ARC OF A CURVE TO THE LEFT, HAVING A DELTA OF 18°1102", A RADIUS OF 818.601 PEE' AND A LENGTH OF 259.80 FEET TO A POINT OF TANGENT 4)S°12°5810" W, A DISTANCE OF 137.24 FEET TO A POINT ON THE NORTHERLY LINE OF THE FLOOD SUBDIVISION EXEMPTION PLAT AS RECORDED UNDER RECEPTION NUMBER 517551 IN THE OFFICE OF THE GARFIELD COUNTY CLERK AND RECORDER; THENCE NORTHERLY AND WESTERLY ALONG NORTH LINE OF SAID FLOOD SUBDIVISION THE FOLLOWING TWO (2) COURSES; I )N 52°56'57" W, A DISTANCE OF 318.94 FEET 2)N 89°301)0"W, A DISTANCE OF 792.95 }•]r ;1 TO A POINT ON THE WEST LINE OF SAID SECTION 3, SAID POINT BEING THE POINT OF BEGINNING. SAID PARCEL CONTAINING 13.156 ACRES, MORE OR LESS. To Whom It May Concern: This is to confirm that I have authorized Boundaries Unlimited, Inc. to act as my representative to work on the project oted above. BY DO ti L. 5r_-.a'r PRINTED OR TYPED NAME Co - OtIrtivt Bim//G,4.`.'F�L BY DATE 7z,•, Nri rre. L. S.S.4icN `14))0 PRINTED OR TYPED NAME Cc - C,wMtivc TIT'L.E? DATE BOUNDARIES UNLIMITED INC. gorrir--,„ Civil & Consulting Engineers AUTORIZATION LETTER October 2, 2009 PROJECT: Seaton Subdivision ADDDRESS: 4151 County Rd 117 Glenwood Springs, CO 81601 Zoned: Rural LEGAL DESCRIPTION: PARCEL A; A parcel of land situated in the W1/2 SW 1/4 of section 3, Township 7 South. Range 89 West of the Sixth Prime Meridian, lying Easterly of the Westerly line of said Section 3 and Westerly of the center of Four Mile Creek, said parcel of land is described as follows: Beginning at a point on the Westerly line of sais Section 3, whence the Section Corner common to Sections 3,4,9 and 10 in said Township and Range bears S 01-01-32 E. 1588.87 feet: thence bearing East a distance of 936.78 feet to a point in the center of said Creek; thence bearing S 17-24-43 W a distance of 53.78 feet along center of said Creek; thence bearing S 14-55-37 E a distance of 93.36 feet along center of said Creek; thence bearing S 32-18-37 W a distance of 93.14 feet along center of said Creek; thence bearing S 1-34-29 W a distance of 33.68 feet along center of said Creek; thence bearing N 89-29-60 W a distance of 280.65 feet ; thence bearing S 0-29-60 W a distance of 152.00 feet ; thence bearing N 89-30-00 W a distance of 604.95 feet to a point on the Westerly line of Section 3; thence bearing N 1-1-32 W a distance of 398.24 feet along the Westerly line of said Section 3 to the point of beginning. PARCEL B: A parcel of land situated in the W1/2 SW 1/4 and in the NE 1/4SIW 1/4 of section 3, Township 7 South. Range 89 West of the Sixth Prime Meridian, lying Westerly of the Westerly of the center of Four Mile Creek and Southerly of the Southerly line of Chelyn Acres Subdivision as platted, said parcel of land is described as follows: Beginning at a point, whence the Section Corner common to Sections 3,4,9 and 10 in said Township and Range bears thence bearing N 89-30- 00 W a distance of 604.95 feet and S 01-01-32 E 1190.63 feet; thence bearing N 0-29-60.000 E a distance of 152.00 feet ; thence bearing S 89-29-60.000 E a distance of 280.65 feet to a point in the center of said Creek; thence bearing N 1-34-29.000 E a distance of 33.680 feet along center of said Creek; thence bearing N 32-18-37.000 E a distance of 93.14 feet along center of said Creek; thence bearing N 14-55-37.000 W a distance of 93.36 feet along center of said Creek; thence bearing N 17-24-43.000 E a distance of 53.78 feet along center of said Creek; thence bearing N 90-0-0.000 E a distance of 90.60 feet along the Southerly line of said Chelyn Acres Subdivision; thence bearing N 31-40-48.000 E a distance of 36.73 feet ; thence bearing N 47-8-54.000 E a distance of 41.71 feet along center of said Creek; thence bearing N 13-5-14.000 W a distance of 52.92 feet along center of said Creek; thence bearing N 37-21-26.000 E a distance of 42,09 feet along center of said Creek; thence bearing S 84-43-6.000 E a distance of 116.64 feet ; thence 110.04 feet along the arc of a curve to the left, having a radius of 173.50 feet, the chord of which bears N 81-37-02 E 108.21 feet; thence 254.50 feet along the arc of a curve to the left, having a radius of 330.00 feet, the chord of which bears N41-21-12 E 248.24 feet to a point on the Westerly right of way line of said County Road; thence bearing S 11-38-50.000 W a distance of 186.10 feet along the Westerly right of way line of said County Road; thence bearing S 31-9-12.000 W a distance of 465.29 feet along the Westerly right of way line of said County Road; thence 259.80 feet along the arc of a curve to the left, having a radius of 818.60 feet, the chord of which bears N 22-03-41 E 258.71 feet; thence bearing S 12-58-10.000 W a distance of 137.24 feet along the Westerly right of way line of said County Road ; thence bearing N 52-56-57.000 W a distance of 318.94 feet ; thence bearing N 89-30-00 W a distance of 188.00 feet ; to the point of beginning. To Whom It May Concern: This is to confirm that I have authorized Boundaries Unlimited, Inc. to act as my representative to work on the project noted above. (6r, BY Do,4 L . S> v ; o PRINTED OR TYPED NAME TITLE DATE S13 I '110 BOUNDARIES UNLIMITED INC. CIVIL ENGINEERS & LAND SURVEYORS SEATON SUBDIVISION COMBINED PRELIMINARY PLAN & FINAL PLAT APPLICATION Erosion Control & Drainage Analysis The Erosion Control & Drainage Analysis is provided in accordance with Article IV Section 4-502 C4 of the Garfield County Unified Land Use Resolution and follows the outline provide therein. APPENDIX • Site Plan • Slope Analysis Map • Drainage Narrative • Drainage Narrative • (A) NOAA Atlas II Precipitation Frequency Data • (B) NRCS Web Soil Survey • (C) HydroCAD v.8 Calculations • (D)Drainage Map • (E) Floodplain Analysis a. Floodplain Analysis b. Floodplain Map c. US Army Corp of Engineers Flood Plain Study, dated Dec. 1982 d. Garfield County Special Use Permit, dated July 1993 C4a. Site Map This information is included on the enclosed Site Plan. C4b. Drainage Structures Existing drainage structures and features are illustrated on the Site Plan. No new drainage structures or features are proposed to be implanted at this time. Runoff from the site and surrounding areas flow will continue to flow into 4 -Mile Creek via sheet flow or shallow channel flow. Due to the presence of the Creek flowing through the site, no detention of stormwater is recommended since it would be better to get onsite waters out of the way before the offsite peak runoff occurs. Runoff from future driveways or parking areas should be directed across lawns or grasses before it enters the Creek to remove sediment & hydrocarbons. C4c. Topography Site topography is shown on the enclosed Site Plan at a 2 foot interval scale, an appropriate contour interval for a parcel this size. 823 Blake Avenue I Suite 102 I Glenwood Springs I Colorado 81601 I Ph 970.945.5252 I Fax 970.384.2833 C4d. Grading Plan No additional site grading is proposed at this time. Items that would have typically been included on a separate Grading Plan have been added to the Site Plan. These items include elevations, contouring, existing dimensions, grades and other pertinent grading and drainage features. C4e.Soil Stockpile Areas Although no development is proposed at this time, as a general disclosure to future home builders, waste stockpiles shall be located at a location on each lot which will not be disturbed by construction traffic and shall be established at a location as determined by the contractor. A temporary concrete washout facility should be established that is located a minimum of 50ft from the Creek. The facility should be located away from construction traffic or access areas to prevent disturbance or tracking. C4g. Equipment Storage Areas Future measures to prevent spills or Teaks of fuel, gear oil, lubricants, antifreeze, and other fluids from construction vehicles and heavy equipment shall be considered to protect groundwater and runoff quality. All equipment maintenance shall be performed in a designated area and measures, such as drip pans, used to contain petroleum products. Spills of construction related products such as paints, solvents, or other fluids and chemicals, shall be cleaned up immediately and disposed of properly. C4h. Temporary Roads Temporary roads may be used for future home building and shall be located as such to limit the amount of tracking caused by construction vehicles and equipment moving in and out of each lot. Construction tracking will be mitigated through the use of Vehicle Tracking Controls (VTC's). VTC's consist of a stone -stabilized pad placed at the exit(s) to a construction site. When vehicles move over the pad, the rough surface shakes loose any mud and debris that may have been carried into the public right of way. VTCB shall be located at the designated entrance(s) of a construction site as determined by the contractor. A VTC shall also be provided at the construction trailer for the site and at the designated concrete washout if these locations happen to be located on or off site. C4i. Areas of Steep Slope Due to the Targe areas of steep slopes on the site, a slope analysis map has been enclosed which better illustrates areas with 20-30% slopes and areas with greater than 30% slopes. C4j. Construction Schedule No construction is to be implemented at this time; therefore a schedule of construction activities is not necessary. As a disclosure to future builders on the site a phased BMP implementation is discussed below. The items included in this schedule are theoretical and may or may not pertain to future development on the site and should be construed as a guide. 823 Blake Avenue 1 Suite 102 1 Glenwood Springs I Colorado 81601 1 Ph 970.945.5252 I fax 970.384.2833 • Pre -construction o Install sediment control Togs at downstream culverts & sediment control fencing along the lower limits of area to be disturbed. o Install Vehicle Tracking Control (VTCs) on site entrance(s) o Designate waste management stockpile areas o Ensure all Potential pollutants are contained and isolated o Install rock socks or similar around potential pollutant areas (i.e. portalette, trash bins) • Clear & Grub/ Initial Grading o Implement soil stabilization as determined necessary by the SWMP Administrator • Infrastructure Construction o Install erosion control fabric on new slopes in locations per construction plans o Seed/landscape disturbed areas where construction traffic is no longer anticipated • Final Stabilization o Seed/landscape disturbed all disturbed areas o Remove temporary erosion control BMPs where vegetation has been established to 70% of pre -disturbance levels C4k. Permanent Stabilization Once construction activities are completed, final stabilization of the disturbed areas will begin. Within one growing season of the project completion, uniform vegetative site coverage shall be established which is equal to or greater than 70% of the pre -disturbance levels, or physical erosion reduction methods will have been employed. When the site is determined to have reached the final stabilization stage, sediment control fencing and erosion logs can be removed. C4I. Erosion Control Measures No new public site developments are proposed at this time; therefore a detail erosion control layout would not be a good representation of the needs for future development. Sediment control fence is shown along the lower boundary of the building setback where future building is anticipated to be located. This has been shown to illustrate to future contractors and landowners that erosion control measures should be implemented. However this does not imply that this is the minimum extent of erosion control measures which need to be inaugurated. A detailed plan should be prepared by the building contractor and submitted with to building permit application. C4m. Estimated Cost No new public site development is proposed for this site, except for one stop and street sign which has a cost of approximately $500. C4n. Calculations A drainage narrative was compiled to better illustrate the calculations made for determining rainfall, runoff, and retention/detention sizing. This narrative has been enclosed. 823 Blake Avenue I Suite 102 I Glenwood Springs I Colorado 81601 I Ph 970.945.5252 I Fax 970.384.2833 C4o. Adjacent Land Use This information is included on the enclosed Site Pian. C4p. Stormwater Management Plan Structural BMPs that may be used for future building may include sediment control fencing installed along the lower boundaries of the excavation/grading areas. Certified weed free hay bales, check dams, silt dikes or erosion control logs should be installed in channels, ditches and around culvert entrances in accordance with Colorado Department of Transportation M - Standards. Surface roughening of exposed soils to dissipate runoff energy and slow runoff velocity to aid in the prevention of soil erosion and promote infiltration. Rock socks or gravel bags installed on grade to slow runoff velocity and promote sedimentation on the downhill side of semi -hazardous areas such as portalettes and trash bins. These controls should be sufficient to mitigate the sediment discharged into the existing system. Non-structural BMPs that may be used with future development may include temporary seeding, permanent seeding, mulching, geotextiles, sod stabilization, vegetative buffer strips, protection of trees, and preservation of mature vegetation. All non-structural BMPs shall conform to the approved construction plans and County standards. C4q. Hydraulic Determinations No new drainage facilities or structures are proposed for the site. Information pertaining to existing and developed runoff velocities and volumes are included in the enclosed Drainage Narrative. The calculations for future buildings are theoretical based on abstract building areas, and should not be construed as final design calculations for future landowners. C4r. Best Management Practices The Stormwater Management Plan Administrator is responsible for developing, implementing, maintaining, and revising the Stormwater Management Plan (SWMP). The activities and responsibilities of the Administrator shall address all aspects of the facility's SWMP. For this project each lot building contractor will be utilized as the SWMP Administrator. C4s. SWMP Application No new public site grading or construction is proposed at this time; therefore a SWMP was not submitted. C4t. Additional Information Detail No additional information or detail required. 823 Blake Avenue I Suite 102 I Glenwood Springs I Colorado 81601 I Ph 970.945.5252 I Fax 970.384.2833 C4u. Signature Blocks "1 have reviewed this Erosion Control Plan and accept responsibility for its implementation." Signed Don Seaton VII.110 Date "This Erosion and Sediment Control Plan was prepared by me or under my direct supervision." Signed r-TDA-Zt-CISA/A i , . Us• •V... Deric Walter, PE # 37110, Boundaries U �s'imni}d Inc. M�n • • ..... 1-11-1(D Date 823 Blake Avenue I Suite 102 1 Glenwood Springs I Colorado 81601 1 Ph 970.945.5252 1 Fax 970.384.2833 NDNIDUAL BUILDINO SfrE CONSTRUCTION NOTES P20¢DURES FOR ANY PUBLIC !WV/STRUCTURE IMPROVEMENT& CONSTRUCTOR 01NEE220 SEANCES AND ALL CONSTRUCTER TERN SHALL BE PEAR:FRED N ACCORDANCE MTH GARFIELD cOUnIT STAn0AAD SPGDF1CA110N5 ANO DEYAL5. 2. ExI5nn0 uI1UR1ES ARE 90204 As THEY ARE BELLIE1ED To EXIST. THESE U1HJnE& AS SHOMN. MAY NOT REPRESENT ACTUAL FIELD CON0111ONS. PRIOR TO ANY ERCAVATIO.N, CONTRACTOR STALL CONTACT ALL APPROPRIATE UTUTY COMPANIES FOR UNE LOG0015. C0ITRACT50 sou. NOIWY PROJECT ENGINEER OF ANT 0010IRIAL cCN0UCTs P202 TO U11UTY CONSTRUCTOR 5O THAT UNE OR GRADE CHANCES CAN BE MACE TO AVID A cEIFUCT OF ANY 02511210 UTIUTY. THE CONTRACTOR SHALL PROTECT ALL EXSTRO ATMOS FROM GARAGE 012NG C0ISIRUCTOI. THE COH1RACTa{ AT NO EXPENSE TO THE 0101(2 OR PROJECT ENGINEER, SHALL REPAIR ANY DAMAGED UTILITIES 3ALL ExCAVAnotis FoR u1u1Y LEES. RETAI)NO WALLS. ROADWAYS. BOLDING STaUCTAES. 01A1NA00 FACEJTES AND TRENCHES. SHALL MEET THE REOUREMENT5 OF THE OCCUPATIONAL SAFETY ANO HEALTH ADMINISTRATOR (051A0, =CRAW INDUSTRIAL OOMMI55DN. COLORADO OVI9O OF ERNES, OR THE COLORADO DEPARTMENT CF TRANSPORTATION, 42001 EVER APPLIES 4, COMPACTOR OF ROADWAY, PARKING AREAS. AND UTILITY ANO REMATCH TRENCHES MUST BE ATTAINED TO 1155 STANDARD PROCTOR UNLESS NOTIFIED DIFFERENTLY ANO COIPACTICR RESUL1s Sustains) TO THE COONTY AND 1HE ENGINEER PRIOR TO ACCEPTANCE. S TIE CONTRACTOR SHALL CONTAIN NS CCNSTRUC1CN ACIMTE3 TO 114E AREA %OWN THE 02001 2011 -OF -WAY AND PROPERTY OWI00, OR EA5EM(N10 PROMO, 70 104E IMAM CR COUNTY. - THE CONTRACTOR 9141E NOT OPERATE 01901 1145 AREA 2THWT THE PRIOR CONSENT OF THE PROPERTY CANER INVOLVED. ANY DAMAGE TO PRIVATE P05004IY BY THE CONTRACTOR 0.119DE THESE u1IT5 MTHWT THE PDIM15501 OF 114E 02VA1E PROPERTY DRIER MRL BE THE RESPON9OUTY OF 714E CONTRACTOR. 0. THE CONTRACTOR SIAL ENSURE POSITIVE CIANAOE AWAY FROM ALL S1RucTUAES HN Au DIRECTORS 7. ALL UT11TES. BOTH UNDERGROUND OR OVERHEAD, 91A1JL BE MANTANE2 IN CONTINUOUS SERVICE THR00H0UT THE ENTRE CONSTRUCTION PERIOD, Mali AS NOTED N THE 5PEDA. 00NO1DNS TIE COIYUACFM SHALL SE RESPOHSBIL ANO WORE EON ANY DAMAGES 10, 4N NIETRUPT5H OF. 5ERN05 CAUSED BY THE CONSTRUCTOR. & FCR MY CONSTRUCTOR ACTVIIY WIWI ALL THE R0A0 RIGHT-OF-WAYS, COIIRACTOR SHALL PROVIDE ALL wAANNO LENTS, 9CN5. BARRRICADES, FLAG MEN OR ITER DENIES ACCESSARY TO PROVOS FOR PUBIC SAFETY N ACCORDANCE 421)4 THE CURRENT MANUAL CF UNIFORM TRAFFIC CONTROL DEVICES THE CONTRACTOR RILL BE RESPONSIBLE FOR ALL CONSIRUC11aR zone TRAFFIC C0NIRO.. A CONSTRUCTION 1RAFFD CONTROL PLAN 1ST et mewl -TED FOR REVE'R AND APPROVAL TO COUNTY AND THE PROJECT ENGINEER. 7 DAIS PR1ER TO COMMENCING CONSTRUCTION MINN THE COI.NTI, ROAD ROT -OF -WAY. A Parce NE1/4S. r 1 r. f U . I f 1 1 1 I l i //1/111 111111; INDIVIDUAL BUILDING SITE CONSTRUCTION NOTES I. PRocELDA E5 FGR ANY PUBLIC INFRASTRUCRIRE IMPR04ENENTS, COIISIRUCTION ENGINEERING SEANCES AND ALL CONSTRUCTION MARK SHALL 0E PE0F0RIWED IN ACCORDANCE WITH GARFIE10 COUNTY STANOARO SPECIFICATIONS ANO DETAILS. 2, EX515NG UTIU111S ARE OLGA AS THEY ARE BELIEVED TO E41ST. THESE UTILISES AS MOAN. MAY N0T REPRESENT ACTUAL FIELD CONDITCNS. PRIOR TO ANY EXCAVATION, CONTRACTOR SHALL COIIACT ALL APPROPRIATE 0711510 CONTRARIES FOR UNE LOCATIONS CONTRACTOR SHALL 001510 PRO,ECT ENGINEER OF ANY POTENTIAL C1NFUCTS PRIOR TO UTILITY CONSTRUCTION SO THAT UNE OR GRADE CHANGES CAN 151E LADE TO AV50 A COIFLIGT O ANY EXISTING DTILITY. THE CONTRACTOR SHALL PROTECT ALL EXISTING UILIRE5 FR001 DAMAGE Ol1RING CONSTRUCTION THE CONTRACTOR, AT NO EFPEN5E TO ME 01NJER OR REELECT ENOREEN, SHALL TREPAN ANY DAMAGED UTILITIES. 3. ALL EXCAVATIONS FOR UTILITY LINES. RETAINING WALLS. ROADWAY5, 001L0NG 5TR11CIURES, ON4NAGE FACXJTIE5 ANO TRENLNE5, SHALL MEET THE REOJIREMENTS OF THE OCCUPATCNAL SAFETY AND HEALTH ADMINISTRATOR (05HA), COLORA00 INDUSTRIAL CONN MON, COLORADO 51415150 OF RINE5, CR 151E COLORADO PEPARILENT O TANSPGRTAOON. MEM EVER APPLIES 4. COMPACTION OF ROADWAY. PARKING AREAS. AND UIUTY AND IRRIGATION TRENCHES NU5T RE ATTNNE0 TO 95% STANDARD PROCTOR, UNLESS NOTIFIED DIFFERENTLY AND CCWIPAC0OI RESIAIS SUBMITTED 70 THE COUNTY AND THE ENGINEER PRIOR TO ACCEPTANCE. S ME CONTRACTOR MALL CORTNM NS C005TRUGRON ACR41TES 70 TRE AREA %MIN THE STREET RICHT-O-0110 ANO PROPERTY OWNED. 0R 045E1.1E01S PRONGED TO THE OWNER OR COUNTY. ME CONTRACTOR 91ALL NOT OPERATE OUTSIDE INS AREA %TROUT THE PRIM CONSENT OF ME PROPERTY OWNER INNO.4E0. ANY DAMAGE TO PPVA1E PROPERTY BY THE 00M141CTOR CUTSIDE THESE UNITS WM5I7 THE PERMISSION OF THE PRIVATE PROPERTY OWNER WILL BE THE RE5 5/090111101 OF 151E CONTRACTOR. THE CONTRACTOR SHALL ENSURE PO 11110 ORNNAGE AWAY FR044 ALL STRUCTURES IN ALL DIRECTIONS 7. ALL UIUTES, BOTH 0N010501 LAND OR 0517111EAD. SHALL BE IAINTNNEO IN CONIINLK}US SEANCE MRXIGHOIT THE ENTIRE 510151RUCT-0N PER00. EXCEPT A5 NOTED IN THE 9'0041 COIDIT1505. TEE CONTRACTOR SHALL BE RESPOH5IBLE AND !LADLE roll MY DAMAGES TO, 0R INTERRUPTION OF, SERVICES CAUSED BY THE CONSTRUCTION. 8. TOR ANY CONSTRUCTION ACIDITY WMIN Ni THE ROAD RICHT-OF-WAYS, CONTRACTOR SHALL PROVIDE ALL WARNING TIGHTS, SIMS, OARRCAOES. FUG MEN OR OTHER OENCES NECESSARY TO PROVIDE FOR PUBLIC SAFETY IN ACCORDANCE WM THE CURRENT MANUAL OF UN{FORM 1R4FF1C CGNIAOL DEVICES ME CONTRACTOR WLL BE RE5410NSBLL FCR ALL CONSTRUCTION TORE TRAFFIC CONTROL. A CON51RUC15011 TRAFFIC CONTROL PLAN 04515T BE 9JBM11TE0 FOR RENEW AND APPROVAL TO COUNTY ANO ME PROJECT ENGINEER. 7 DAYS PRIOR TO COMMENCING CONSTRUCTION wTHIN TH1 COUNTY ROAD RICHT-OF-WAY. 9. 011-910 OBSERVATIONS AND REVIEW CONDUCTED 80 ME COINIY OR PROJECT ENGINEER CF CON5IRUCR0N OR WORK IN PROGRESS ARE NOT TO BE CONSTRUE!) AS A GUARANTEE OR WARRANTY BY THE COUNTY OR PROUE0T ENGINEER CF ME COMPIETEO WORK AND THE CONTRACTORS RE5PON9BILITIES. T0, SAFETY IS ME CONTRACTORS RESPC0SIBIUTY. THE PROJECT ENGINEER, THE OWNER, AND THE COUNTY ARE NOT RESEON91311 FOR SAFETY IN, ON OR ABOUT ME STE, NON FGR COMPUANCE BE THE APPROPRIATE PARTY NW ANY REGULAnoNS RELATING HERETO. I1. THE CONTRACTOR SHALL TAKE ALL APPROPRIATE PRECAUTIONS 70 SIGNIFICANTLY REDUCE ANY POTENTIAL POLLUTION CAUSED BY H5 ACTINIDES, INCLUDING VEHICLE FUELING, 5TGFIAG0 00 FERTILIFFTS OR CHEMICALS, ETC. ME CONTRACTOR SHALL HAVE IDENTIFIED PROCEDURES FOR HANDLING POTENTIAL POLLUTANTS AND HAVE IDENTIFIED SPILL PREVENOON AND RESPCN5E PRommiTas PRION TO ANT ACONTES AT THE PRO.ECT SITE. 2. THE CONTRACTOR MALL NOT SCALE DRAWINGS FGR COR5TR000O1 PURPOSES. ANY NIS0NG 05MEN510N5 OR 0SCREPANCIE5 IN PUNS. FIELD STAKING. OR PHYSICAL FEATURES SHALL BE BROUCNT TO THE ATTENTKXR OF THE PR0.EC1 QNGINEEA. IF THE Ea/TRACTOR PROCEE05 WITH ME WORK wMOUT NO1Fl1M0 141E ENGINEER, HE OOPS SO AT HIS OWN RISK. 11 PREPARATION CE STORMWATER M4NAGEUEHT Plugs. PERMITTING . AND COMPLIANCE ARE THE RESPONSIBILITY OF THE CONIRACT0R. 14. ALL OSMRBED AREAS MUST UE RE5ECET41E0. 1E1APORARY IRRIGA5ON MAY BE REWIRED TO REESTABIJSH 4ECETATICN. 151 OSROSAL OF TRASH. CONCRETE AND OXER CONSTRUCTION DEBFIS IS THE CONTRACTORS RESPONSIBILITY AND SHALL BE CONSIDERED PART CF THE WORK. 17, FOLLOW THE GE01EMTNICAL RECOUNENOAITONS GUNNED IN 141E GEOTECHNICAL REPORT. FUTURE DEVELOPMENT DISCLOSURE DRF-PRFNNIION• DUE TO A 1.FOC OF A DEVELOPED WATER NNN 5Y41p4 MAT COULD PROVIDED A FIRE HYDRANT OR WATER SOURCE YEN THE CAPACITY FOR A ETRE TANKER TO PULL FROM. IT HAS BEEN RECO.IMENO BY THE GLENWOW 9'RINGS FIRE DEPT. MAT A SINGLE FAMILY FIRE SPRINKLER 5151011 (13D) BE 114STAILEO IN NEW DWELLINGS CONSTRUCTED Oft MESE PROPERTIES 5 9 NUISANCF• 5 I - OPPACTS ON ADJACENT URO FROM ME GENERATION OF 0APCR, O15T. 9AIXE. NOSE, GLARE, NBRATI04 ON OTHER EMANATIONS 1 SHALT_ BE AVOIDED OR M10GATED MR0)5N ME USE OF PROPER ' MEM005 PROOULED FROM ANY FUMRE 555IL0NG ON THIS PROPERTY _ THESE MEM005 MAY INCLUDE WATERING OF DISTURBED SOILS TO , MITIGATE DUST, WORKING IN STANDARD HOURS OF OPERATION TO - l HELP REDUCE NOSE IN 5NSI154E TIME PERILA5, PROPER UPKEEP O MACHINERY 10 REDUCE NOSE AND OR SMOKE AND EXHAUST. SITE 0.$E1ANUNE55. INSIN.LATIDN OF ER0900 CONTROL MEASURES ETC. IMPACIL LLEAMI ES MONO BE TAKEN IN THE OE51GN CF FUTURE DEVELOPMENT TG 0E5UCE VISUAL IMPACTS TO SURROUNDING RDEELINES THESE MEASURES MAY immix Pa 11NG TREES, AVOIDING IRREGULAR ROOF UNE51 U5IN0 NATURAL COLO75 AN MATE108 3, ECT. PLAN MAP Seaton Subdivision A Parcel of land situated in the W1/2SW1/4 and in the NE1/4SW1/4 of Section 3, Township 7S, Range 89W 3 1 a NY I• REGI MATCH! 1. ARRUpT ANLAILAR 1RAN91TON5 AND UNEAR PLACEMENT ON V190.E SLL4ES SHALL BE AVOIDED. AREAS DISTURBED BY GRADING SHALL BE CONTOURED 50 THEY CAN 8E REVEGETAIED TO 70,1 OF URIGN41 91E VEGETATION YAM (I) GROWING SEASON WM NATIVE OR NCN-NATIVE VEGETATION CAPABLE CF 9.IPPOR156 POST DISTURBANCE LAND USE 2 TOP 5011 SHALL BE STOCKPILE() ANO REPLACED OVER DISTURBED AREAS. 3. RETAINING WALLS MAT BLEND IN WITH THE NATURAL LAN6504PE 9SALL 85 OSE0 10 REDUCE THE STEEPNESS OF CUT SLOPES AND TO PROVIDE PLANING POCKETS CONDU0VE 10 4EOETATON 4, 70 AVO0 INSECT DISEASES AND WILDFIRE HA2AR05, ALL VEGETATIVE RESIDUE, MASHING, BRANCHES, UMBS, SNIPS, ROOTS, OR OTHER SUCH FLAW/ABLE LOT-CLE4AING 0E8R5 SHALL 8E REMOVED FROM ALL AREAS OF THE LOT 114 WHICH SUCH MATERIALS ARE GENERATED CR DEPOSITED, PRIOR TO FINAL BUILDING INSPECTOR. 5. WITHIN 9X 1CN1H5 OF SUBSTANTIAL CCMPLERON CF SOL 015TUR8A0CE, ALL BRUSH, SM0PS AND OTHER DEBRIS SHALL BE KNOWS FRONT ME SITE. W. ALL AREAS 0SnJRBE0 SHALL HAVE A TME UNE ESTABLISHED FOR 111E RECLAMATION CP THE SITE AS APPROVED BY THE (OUNTY. SILT FABRIC STARED TO POSTS 5411 FENCE FABRIC A4CHOREO N 010000 AAD MUSKET FIRMLY TO POST PROPERTY UNE 24` POST (2 X 2' INC NOMINAL. CONPACFED RACITILL42' LGN. 7fITK71 4E �j�. WATER VALVE 80 ELEC ME TELEPHONE PEDE51A1, ELEC,_PEDESTAL • POLLOUT/PARKING EX. 2'. 5E44ER SEANCE. UNE 00. 12,0 C CULVERT PEILLouT/PARKING SEWER 0.EANOUT (TPP.) / i� f- 4/ EX 94' CNP CULVERT 1100 -YR FLOCOPLNN 150110ARY TEMPORARY SEGMENT / CONTROL FENCE SHALL BE 145844?ALONG UTUE / DEVELOPMENT - / 001LONG SETRACKN-\) / ETF RESIDENCE EX 15000AL 5 SEPTIC TANK 5• 5 EX, 1000 0AL DOSING TANK & PULP 20• Ul1UTY EMIL7 /. EX. WATER SHUTOFF EX. WATER WELL `\\�, b / .. PARCEL 2 EX YAR HYDRANT (TW.) 20' ESMT EX. TI'10 PARCEL 1 EX WOODEN BRIDGE WEI CONC.. ABUTMENTS INSTALL STOP 8 STREET SIGN 5 f 5 ' T; A0 04 IN TRENCH SILT FENCE ATTACHED40540 TO POST SEDIMENT CONTROL FENCE o X.TS G' X 5' ROW 5. 1)11(40 5TCP 5551 INF0NA10N: LOCATE STOP SIGN 2 FT. MIN. FROM EDGE OF PAVEMENT TO EDGE OF 5100, AND 12 FT. MIN. BACK 00014 EDGE CF PAVEMENT OF THE THROUGH TRAFFIC ROUTE SIGN TO DE STANDARD 110.1.C.0. APPROVED 24' X 24' STOP SON. NOUN7E0 WITH BOTTOM Cr SIGN 7 FT. MIN. ABOVE FINISH GROUND. EX. CABLE PED. ET. CABLE PEO. EX. TELEPHONE EX. GAS & CANIS 7V APPUCAIITJOYA4FR: DON SEATON 4151 COUNTY RD 517 GLENWOOD SPRINGS, CO 81601 727.743.8208 FNGNEER/SURVEYOR: BOUNDARIES UNLIMITED INC. ATTN: DERIC WALTER. PE ATTN: STEVE SMITH, PLS 827 BLAKE AVE., STE. 1112 GLENWOOD SPRINGS, CO 81601 970.945.5252 LIMIEST POTABLE WATER: IRR0GARON WATER. SEWER: ELECTRIC: GAS: X CAS, TELEPHONE 10 CARTE TV LEGEND —syhtfry M 01 —133. --110 103- 140- EXISTING ASPHALT 00151100 ASPHALT WOODEN BRIDGE BRICK PAVERS EASEMENT BUILDING SETBA014 PROPERTY LINE CENTERLINE EXISTING 2' CONTOUR EXI5TWC 10' CONTOUR PROPOSED SILTATION FENCING EXISTING SWALE FLOW LIKE EXISTING BARB WIRE FENCE EXISTING WYXXXEN FENCE EX1511NG PLASTIC FENCE PROPOSED 04ERHEA2 E0E110C EXISTING 'TELEPHONE EXISTING GAS EXISTING WATER SEANCE UNE 100 -YEAR FL000PLNN FLOW ARROW EXISTING WATER WELL EXISTING PC/PERMS EASING TREE LANDSCAPE ROCK WATER SHUTOFF VALVE CLEANOUT IRRIGATION 445504NT TELEPHONE, ELECTRIC PEDESTALS GAS METER GRAPHIC SCALE A 10 RG 113 WELL WELL Isos CITY OF GLENWOOD SOURCE GAS ( 041 mai I Inch - 40 ft- NOTE: PER ARTICLE III SECTION 3-201C, A MIN. BUILDING ENVELOPE OF ONE ACRE WHICH DOES NOT CONTAIN SLOPES GREATER THEN 30 PERCENT SHALL BE PROVIDED IF PROPOSED LOT SIZE IS OF ONE ACRE OR GREATER. AREA WITH SLOPES GREATER THEN 30% AREA WITH SLOPES 20-30% — — — — — BUILDING ENVELOPE PROPERTY/LOT UNE if 0 z D its EX. RESIDENCE Lai 1 - AR A:8.81 AC 'i. / SUITABLE BUILDING AREA:1.05± AC 91A I SF LOT 2`•, - AREA:4.45 AC. " I SUITABLE BUILDING (-. AREA:1.00± AC � 1 w GRAPHIC SCALE 29 10 ea Im { IN FEET ) 1 inch = BB fl z oN fA gma z 00 w W moo 644 FILE INFO: r PROJECT Ha i 09022 1 PROl*.C4 fume I swan ! F11.E PO4 SLOPE BOUNDARIES ...UNLIMITED INC. CIVIL ENGINEERS & LAND SURVEYORS Drainage Narrative Seaton Subdivision March 18, 2010 The following Drainage Narrative is being submitted along with a the following appendices; (A) Precipitation Frequency Data Output, (B) Web Soil Survey with soil description and features, (C) HydroCAD Summary input/output, (D) Drainage Map & (E) Floodplain Analysis. Narrative Outline: The proposed Seaton Subdivision is located along County Rd. 117 (4 -Mile Creek Rd.) just south of Chelyn Acres. The parcel is split by Four Mile Creek. On the west side is a steep hillside that is currently vegetated with small to large brush with a flatter wooded area next to the creek where the Seaton Residence currently resides. The east side of the creek also has a flatter wooded are next to the creek which rises a short distance up to a grassy area adjacent to Four Mile Rd. Currently a barn and asphalt drives occupy the east side of the creek with the pan area suitable for a future homesite. The site features, layout and topography are shown on the enclosed Drainage Map. The drainage map illustrates the drain basins that were studied through the aid of HydroCAD V8.0 Stormwater modeling Software. A copy of the software output can be found in the Appendix. The 100 -year 24- hour storm event was analyzed to determine existing and developed runoffs on the property. A 100 - year design rainfall of 2.6 inches was obtained from the National Weather Service NOAA Atlas II. A copy of the data output from this website can be found in the Appendix. Information obtained from the USDA National Resource Conservation Service's NCSS Web Soil Survey was also used to determine hydrologic soil group ratings and their boundaries. These ratings were used to estimate the runoff curve numbers for the site soils for each individual drainage basin. A floodplain special use permit was obtained in 1993 to allow for construction of a bridge and single family residence in regulated floodplain of Four Mile Creek. The bridge and residence were also built in 1993. As -built topography of the bridge and existing residence along with a more detailed layout of the flood plain has been provided. This map clearly shows that both the bridge and the existing residence are in compliance with the permit. The basement of the existing residence is approximately one foot above the floodplain high water elevation and the bridge is approximately two feet above the floodplain high water elevation Summary of Findings: Based on the location of the property, the rural nature and the limited amount of existing and future development, stormwater detention does not appear to be necessary. It has been determined that detaining water onsite could actually have adverse impacts to surrounding properties in flood events 823 Blake Avenue Suite 102 1 Glenwood Springs I Colorado 81601 I Ph 970.945.5252 I Fax 970.384.2833 where upstream floodwater flows could arrive at the property at a later time and be combined with delayed onsite peak flows. Although detention does not appear to be necessary, a summary of detention calculations to mitigate the effects of development can be found in the Appendix. Erosion Control: (DISCLOUSURE TO FUTURE BUILDERS & LAND OWNERS) Erosion control measures and Best Management Practices (BMPS) should be followed during construction to insure that the property and the adjacent sites are not impacted from sedimentation. During construction activities and until vegetation can be established, sediment control fencing should be installed along the lower limits of the excavation. Certified weed free hay bales, check dams, silt dikes or erosion control logs should be installed in drainage swales and around culvert entrances in accordance with Colorado Department of Transportation M -Standards. Riprap should be installed at culvert outlets. Sediment and mud should be prevented from leaving the construction site by immediate placement of a stabilized construction entrance. The contractor should be responsible for cleaning and general upkeep of the public road. As an effective dust control measure, water trucks may be utilized to minimize uprising of dust. Good housekeeping BMPs should be followed throughout the entire life of the project. These include but are not limited to: - refuge receptacles should be regularly emptied and equipped with lids, - keeping machinery in good operating condition to prevent leakage, and - apply appropriate (not excessive) amounts of fertilizer to the landscaping. - scheduled maintenance cleaning of any downstream culverts and ditches. - general site cleanliness and proper training of employees. - grading must be performed (but not in excess) to ensure that drainage is directed away from all structures in all directions. Once construction activities are completed, final stabilization of the disturbed areas should begin. Within one growing season of the project completion, uniform vegetative site coverage should be equal to or greater than 70% of the pre -disturbance levels, or equivalent permanent, physical erosion reduction methods should be employed. When the site is determined to have reached the final stabilization stage, erosion control structures can be removed. If you have any questions or comments, please feel free to contact Deric Walter, PE at (970) 945-5252. 823 Blake Avenue I Suite 102 I Glenwood Springs I Colorado 81601 I Ph 970.945.5252 I Fax 970.384.2833 APPENDIX A Precipitation Frequency Data Output NOAA Atlas 2 Colorado 39.4710N 107.3210N Site-specific Estimates Ma p Precipitation (inches) Precipitation Intensity (in/hr) V 2 -year 6 -hour 0.91 0.15 2 -year 24-hour 1.26 0.05 100 - year 6- hour 2.02 0.34 _ 100 - year 24-hour 2.60 0.11 Sydraaatsoroloplcal cosign Studies Cantor - NOAA/National Weather Service 1326 last -Veit lighrsy - Silver (Wing, 107 30910 - (301) 713-1669 wed Oct 7 13801)33 2009 http://hdsc.nws.noaa.gov/cgi-bin/hdsc/na2.perl?g1at=39.471 &glon=-107.321 &submit=Sub... 10/7/2009 39° 28' 22" 39° 28' 5" 2 n nrnr 300000 300080 Hydrologic Soil Group—Aspen-Gypsum Area, Colorado, Parts of Eagle, Garfield, and Pitkin Counties (Seaton) 300160 300240 300320 300400 300480 300550 300640 0 300720 axys-.: m 39° 26 23" 0 300000 Map Scale: 1:3840 if punted an A size (8.5" x 11") sheet. 0 50 100 200 Meters 300 0 USDA Natural Resources Conservation Service 200 400 800 Feet 1,200 Web Soil Survey National Cooperative Soil Survey 10/8/2009 Page 1 of 4 m z co 39" 28' 6" Hydrologic Soil Group–Aspen-Gypsum Area, Colorado, Parts of Eagle, Seaton Garfield, and Pitkin Counties Hydrologic Soil Group Hydrologic Soil Group— Summary by Map Unit — Aspen -Gypsum Area, Colorado, Parts of Eagle, Garfield, and Pitkin Counties Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 18 Cochetopa-Antrobus association, 12 to 25 C percent slopes 42 Fluvaquents, 0 to 10 percent slopes D 49 Coslin fine sandy loam, 3 to 6 percent B slopes 50 Goslin fine sandy loam, 6 to 25 percent B slopes 94 Showalter-Morval complex, 5 to 15 percent C slopes 95 Showalter-Morval complex, 15 to 25 C percent slopes Totals for Area of Interest 10.5 8.9 17.6 0.7 9.8 23.7 71.3 14.7% 12.5% 24.7% 1.0%; 13.8% 1 33.3% " 100.0% I. 2 Natural Resources Web Soil Survey 10/8/2009 l� Conservation Service National Cooperative Soil Survey Page 3 of 4 • Hydrologic Soil Group—Aspen-Gypsum Area, Colorado, Parts of Eagle, Seaton Garfield, and Pitkin Counties Description Hydrologic soil groups are based on estimates of runoff potential. Soils are assigned to one of four groups according to the rate of water infiltration when the soils are not protected by vegetation, are thoroughly wet, and receive precipitation from long -duration storms. The soils in the United States are assigned to four groups (A, B, C, and D) and three dual classes (AID, B/D, and C/D). The groups are defined as follows: Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly wet. These consist mainly of deep, well drained to excessively drained sands or gravelly sands. These soils have a high rate of water transmission. Group B. Soils having a moderate infiltration rate when thoroughly wet. These consist chiefly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture. These soils have a moderate rate of water transmission. Group C. Soils having a slow infiltration rate when thoroughly wet. These consist chiefly of soils having a layer that impedes the downward movement of water or soils of moderately fine texture or fine texture. These soils have a slow rate of water transmission. Group D. Soils having a very slow infiltration rate (high runoff potential) when thoroughly wet. These consist chiefly of clays that have a high shrink -swell potential, soils that have a high water table, soils that have a claypan or clay layer at or near the surface, and soils that are shallow over nearly impervious material. These soils have a very slow rate of water transmission. If a soil is assigned to a dual hydrologic group (A/D, BID, or CID), the first letter is for drained areas and the second is for undrained areas. Only the soils that in their natural condition are in group D are assigned to dual classes. Rating Options Aggregation Method: Dominant Condition Component Percent Cutoff. None Specified Tie-break Rule: Lower Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 10/8/2009 Page 4 of 4 APPENDIX C Subcat <EXA> <EXB> (EX BI <PRA> <PRB> <PR4 Reach Drainage Diagram for Study Prepared by Boundaries Unlimited 10/8/2009 HydroCAD® 8.00 s/n 004414 0 2008 HydroCAD Software Solutions LLC Seaton Subdivision Study Type 11 24 -hr 100 -yr Rainfall=2.60" Prepared by Boundaries Unlimited Page 2 HydroCAD® 8.00 s/n 004414 © 2006 HydroCAD Software Solutions LLC 10/8/2009 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR -20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment EX A: Subcatchment EX B1: Subcatchment EX B2: Subcatchment PR A: Subcatchment PR B1: Subcatchment PR B2: Runoff Area=1.020 ac Runoff Depth>0.66" Flow Length=200' Slope=0.0700 '1' Tc=64.4 min CN=76 Runoff=0.35 cfs 0.056 af Runoff Area=2.920 ac Runoff Depth>0.59" Flow Length=320' Slope=0.1000 '1' Tc=21.7 min CN=74 Runoff=1.82 cfs 0.143 af Runoff Area=1.350 ac Runoff Depth>0.59" Flow Length=270' Tc=21.0 min CN=74 Runoff=0.86 cfs 0.066 af Runoff Area=1.020 ac Runoff Depth>0.85" Flow Length=200' Slope=0.0700'1' Tc=64.4 min CN=80 Runoff=0.47 cfs 0.072 af Runoff Area=2.920 ac Runoff Depth>0.67" Flow Length=320' Slope=0.1000 '1' Tc=21.7 min CN=76 Runoff=2.15 cfs 0.164 af Runoff Area=1.350 ac Runoff Depth>0.72" Flow Length=270' Tc=21.0 min CN=77 Runoff=1.10 cfs 0.081 af Total Runoff Area =10.580 ac Runoff Volume = 0.582 af Average Runoff Depth = 0.66" 94.90% Pervious Area =10.040 ac 5.10% Impervious Area = 0.540 ac Seaton Subdivision Study Type 1124 -hr 100 yr Rarnfa11=2.60" Prepared by Boundaries Unlimited Page 3 HydroCAD® 8.00 sin 004414 © 2006 HydroCAD Software Solutions LLC 10/8/2009 Runoff Subcatchment EX A: = 0.35 cfs @ 12.75 hrs, Volume= 0.056 af, Depth> 0.66" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 100 -yr Rainfall=2.60" Area (ac) CN Description 0.830 77 Woods, Good, HSG D 0.190 72 Woods/grass comb., Good, HSG C 1.020 76 Weighted Average 1.020 Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 64.4 200 0.0700 0.05 Sheet Flow, Woods: Dense underbrush n= 0.800 P2= 1.20" Subcatchment EX BI: 1.82 cfs @ 12.17 hrs, Volume= 0.143 af, Depth> 0.59" Runoff Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 100 -yr Rainfall=2.60" Area (ac) CN Description 1.340 71 Meadow, non -grazed, HSG C 1.580 77 Woods, Good, HSG D 2.920 74 Weighted Average 2.920 Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 21.3 200 0.1000 0.16 Sheet Flow, Grass: Dense n= 0.240 P2= 1.20" 0.4 120 0.1000 4.74 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps 21.7 320 Total Runoff Subcatchment EX B2: = 0.86 cfs @ 12.16 hrs, Volume= 0.066 af, Depth> 0.59" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 100 -yr Rainfall=2.60" Seaton Subdivision Study Type 1124 -hr 100 -yr Rainfa11=2.60" Prepared by Boundaries Unlimited Page 4 HydroCAD® 8.00 s/n 004414 © 2006 HydroCAD Software Solutions LLC 10/8/2009 Area (ac) CN Description 0.540 79 Woods/grass comb., Good, HSG D 0.810 71 Meadowjnon-grazed, HSG C 1.350 74 Weighted Average 1.350 Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.5 200 0.1100 0.16 Sheet Flow, Grass: Dense n= 0.240 P2= 1.20" 0.5 70 0.2300 2.40 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 21.0 270 Total Subcatchment PR A: Runoff - 0.47 cfs @ 12.72 hrs, Volume= 0.072 af, Depth> 0.85" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 100 -yr Rainfall=2.60" Area (ac) CN Description 0.110 72 Woods/grass comb., Good, HSG C 0.180 98 Paved parking & roofs 0.730 77 Woods, Good, HSG D 1.020 80 Weighted Average 0.840 Pervious Area 0.180 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 64.4 200 0.0700 0.05 Sheet Flow, Woods: Dense underbrush n= 0.800 P2= 1.20" Subcatchment PR B1: Runoff = 2.15 cfs @ 12.17 hrs, Volume= 0.164 af, Depth> 0.67" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type 11 24 -hr 100 -yr Rainfall=2.60" Area (ac) CN Description 1.220 71 Meadow, non -grazed, HSG C 1.460 77 Woods, Good, HSG D 0.240 98 Paved parking & roofs 2.920 76 Weighted Average 2.680 Pervious Area 0.240 Impervious Area •T Seaton Subdivision Study Type 1! 24 -hr 100 -yr Rainfall=2.60" Prepared by Boundaries Unlimited Page 5 HydroCAD® 8.00 s/n 004414 OO 2006 HydroCAD Software Solutions LLC 10/8/2009 Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 21.3 200 0.1000 0.16 Sheet Flow, Grass: Dense n= 0.240 P2= 1.20" 0.4 120 0.1000 4.74 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps 21.7 320 Total Subcatchment PR B2: Runoff = 1.10 cfs @ 12.16 hrs, Volume= 0.081 af, Depths 0.72" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 100 -yr Rainfall=2.60" Area (ac) CN Description 0.540 79 Woods/grass comb., Good, HSG D 0.690 71 Meadow, non -grazed, HSG C 0.120 98 Paved parking & roofs 1.350 77 Weighted Average 1.230 Pervious Area 0.120 Impervious Area Tc Length Slope Velocity Capacity Description (rein) (feet) (ft/ft) fft/sec) (cfs) 20.5 200 0.1100 0.16 Sheet Flow, Grass: Dense n= 0.240 P2= 1.20" 0.5 70 0.2300 2.40 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 21.0 270 Total APPENDIX D Farpill Boundaries Unlimited, Inc. 823 Blake Avenue, Ste. 102 Glenwood Springs, CO 81.601 tele: 970.945.5252 fax: 970.384.2833 Scale: 1"=120' Date: 10/13/09 ProJ #: 09022 File: Vicinity Garfield County, Colorado Seaton Subdivision Drainage Basin Map Appendix E Floodplain Analysis The Floodplain Analysis is provided in accordance with Article V Section 4-503 A of the Garfield County Unified Land Use Resolution and follows the outline provide therein. This analysis is provided for existing developed conditions that have already been approved for by the County and therefore may or may not illustrate or answer all of the subsections of the submittal requirements. Enclosed with this analysis include; Flood Plain Map, US Army Corp of Engineers Colorado River & Tributaries "Flood Plain Study" dated Dec. 1982, and a copy of the Garfield County Special Use Permit for development in the floodplain boundary dated July 1993. Al. Base flood boundary and water surface elevation Shown on Flood Plain Map A2. Floodway Boundary A detailed survey of the water course was not available; therefore an accurate boundary of the floodway would not be a good representation of actual field conditions. No additional development is proposed within any lower benches along the creek so additional survey is not necessary. A3. Channel of the watercourse Shown on Flood Plain Map A4. Existing & Proposed Contours Shown on Flood Plain Map A5. Structure Elevations Shown on Flood Plain Map A6. Flood Proofed Structure Elevations Not applicable A7. Landscape Alterations A small pond was constructed some time ago on the west side of Four Mile Creek that does not alter the floodplain boundary. All other landscape modifications have been made outside of the floodplain boundary. A8. Utility & Street Elevations The locations of the existing septic tanks, service line and infiltrator area can be seen on the Flood Plain Map. It appears that the septic and dosing tanks exist within the floodplain boundary. Septic permits were issued by Garfield County dated 1993 when the system was installed. A9. Impervious Surfaces Impervious areas for this property include building roofs, asphalt roads and concrete/brick drives. Most impervious areas on this property already exist that encompasses 0.4 acres. An assumed impervious area of 6000 sq ft (0.14 acres) is anticipated for future building on Lot 2. Combined, impervious areas will be around 0.54 acres of the total 13.2 acre property or about 4% impervious. A10. Ditches & Irrigation Laterals No water supply ditches or irrigation laterals are prevalent on the subject property. A water well south of the existing residence and west of Four Mile Creek lies within the floodplain boundary as shown on the enclosed Flood Plain Map. 823 Blake Avenue I Suite 102 1 Glenwood Springs I Colorado 81601 1 Ph 970.945.5252 1 Fax 970.384.2833 FLOODPLAIN BOUNDARY /r FLOODPLAIN HIGH WATER ELEVAT10 EX. RESIDENCE GARAGE FF ELEV:6365± BASEMENT FF ELEV:6355± { NOTE: FLOODPLAIN INFORMATION WAS INTERPERTED FROM THE US ARMY CORP OF ENGINEERS (USACE), COLORADO RIVER & TRIBUTARIES FLOOD PLAIN STUDY, MAP RF22-2 DATED DEC. 1982 A VERTICAL DATUM DISCREPENCY WAS FOUND AND AN ADJUSMENT FACTOR OF 10 FEET WAS ADDED TO THE USACE DATUM 1 r- 65524, N 598,000 COUNTY AD 920 825 N 598,579 E 1,484,903 826 71590465 N827 598,437 1,464,972 �, /6,�7•p y' 118213 569,366 E 1,484,969:'��/�y51pp E 1,464 66 /. 6ti0 N 599,000 824 N 599,282 E 1,495,047 823 N 599,329 E 1,405,058 1825 + 99,375 E 1,485,064 N 900.000 821 H 599,951 6 1,485,290 821 N 599,746 4 E 1,495,694 9_' 10. 5 819 N 600,366 620 6 1.495,717 N 600,311 919 E 1485,506 N 600,409 NI 600,374 820 E 1,485,859E 1,465,529 N 600,390 819 E 1,485,951 N 600,436 11819 600.467 E 1,485,970E 1,405,977 035 827 6 825 N 596.593 E 1,485,20 H 601,000 51 .1 131T BI N 601,024 E 1,485,766 816 817 N 601,5 N 600,940 E 1,486 E 1,486,220 615 N 601,890 E 1,466,067 814 N 501,041 42 E 1,466,050 256 N 602,000 60 614 N 601,682 E 1,486,531 829 H 597.562 1 6 1.485.544 4 /.. '4 I/d / 926 N 598,459 E 1,485,191 627 H 598,412 E 1,485,196 824 N 599,040 E 1,485,430 626 N 596.380 626 6 1,465,191 N 5913,502 E 1,465,329 828 N 596.318 E 1,485,409 827 N 590.404 E 1,485,581 !I 823483.0 822 111 N 599,0135{+S E 1,485,455 �1l JIf ILN 599,113 6482E 6 1,485,470 . 647.4. 6473. • V _ 637C-----'-.,,,.,.__..'''"---.-.._.__--"----------'-7__,, 0 ��7 7.. �� �`.. . j `� �/ .390 rr:�:....�� 16410 �gh00 ^643U 20 �.m 6450 6450 11,2 5 1,485000 z RF -22-2 0 0 0 v w E 1,4 57,000 0 0 0 m 60515 OF HORIZONTAL CONTROL' THE COLORADO STATE PLANE COORDINATE SYSTEM, CENTRAL ZONE, LAMBERT CONFORMAL CONIC PROJECTION. THE FOLLOWING (USC a G5 AN13/08 USGS) TRIANGULATION STATIONS WERE USED. NAME ORDER COORDINATES CATHERINE 2nd 2.1,516,500.42 Y. 581,255.78 GNAT 3rd x= 1,231,566.60 Y. 523,643.10 oA515 OF VERTICAL CONTROL: U5C 5 G5 SEA LEVEL DATUM 80050 ON THE FOLLOWING BENCHMARKS' NAME ORDER ELEVATION D•156 2nd 6192.284 4870.74 PS and 4869.860 LEGEND • 1.081Z, CONTROL d VERTICAL CONTROL }y(�y BENCHMARK _ 4y PHOTO CENTER GRID POINT - -- CROSS SECTION e POLE -.4- FENCE TREE ,n � BRUSH or SCRUB ,_71 I _ W 1 FOUNDATION or RUINS SECTION L1146 ▪ FOUND SECTION CORNER UNFOUND SECTION CORNER �- �--- 866605. SECTION LINE COMPILATION BY PHOTOGRAMMETRIC METHODS FROM 6" C.EL, VERTICAL AERIAL PHOTOGRAPHY TAKEN NOV. 15,16,5 17, 1982 THIS MAP COMPLIES WITH NATIONAL MAP ACCURACY STANDARDS PREPARED BY. ANALYTICAL SURVEYS, INC. 4167 51N7017 R0A0 COLORADO SPRINGS, CO. 80907 303-593-0093 SCALE IN FEET 200 0 0 200 4C0 CONTOUR INTERVAL - 2 FEET COLORADO RIVER AND TRIBUTARIES FLOOD PLAIN STUDY PREPARED FOR GARFIELD a MESA COUNTIES, COLORADO IN COOPERATION WITH COLORADO WATER CONSERVATION BOARD DENVER, COLORADO OEOEMBER, 1462 RECDNDED4yJ�( MILDRED�LSDMRP, COUN8 TY CLERK Jul 3 STATE OF �C##O77LORADO ) )ss County of Garfield Etoox 868 nil; 214 At a reaular meeting of the Board of County Commissioners for Garfield County, Colorado, held in the Commissioners' Meeting Room, Garfield County Courthouse, in Glenwood Springs on Tuesday , the 6th day of July A D 19 93 there were present: Buckey (Amer) Arbaney , Commissioner Chairman Marian Smith , Commissioner Arnold_Mackley , Commissioner Don Deford , County Attorney Mildred A3sdarf , Clerk of the Board Chuck Deschenea , County Administrator when the following proceedings, among others were had and done, to -wit: RESOLUTION NO. 93-056 A RESOLUTION CONCERNED WITH THEAPPROVAL OFA FLOODPLAIN SPECIAL US E PERMIT APPLICATION FOR Don L. and Nannette L. Seaton. WHEREAS, the Board of County Commissioners of Garfield County, Colorado, has received application from Don L. and Nannette L. Seaton for a Floodplain Special Use Permit to allow for the construction of a bridge and Single -Family residence in the regulated floodplain of Four Mile Creek: See Attachment A (in the State of Colorado and the County of Garfield); and WHEREAS, the Board held a public hearing on the 15th day of June 1993, upon the question of whether the above-described Floodplain Special Use Permit should be granted or denied, at which hearing the public and interested persons were given the opportunity to express their opinions regarding the issuance of said Special Use Permit; and WHEREAS, the Board on the basis of substantial competent evidence produced at the aforementioned hearing, has made the following determination of fact: 1. That proper publication and public notice was provided as required by law for the hearing before the Board of County Commissioners. i • ow, 868215 2. That the hearing before the Board of County Commissioners was extensive and complete, that all pertinent facts, matters and issues were submitted and that all interested parties were heard at that hearing. 3. That the application is in compliance with the Garfield County Zoning Resolution of 1978, as amended. 4. For the above stated and other reasons, the proposed use is in the best interest of the health, safety, morals, convenience, order, prosperity and welfare of the citizens of Garfield County. NOW, THEREFORE, BE 1T RESOLVED by the Board of County Commissioners of Garfield County, Colorado, that the Special Use Permit be and hereby is authorized permitting to allow for the construction of a bridge and Single -Family residence in the regulated floodplain of Four Mile Creek, upon the following specific conditions: 1. That all representations of the applicant, either within the application or stated at the meeting before the Board of County Commissioners, shall be considered conditions of approval. 2. That the applicant shall have two (2) years to comply with the conditions of approval. The Special Use Permit shall be issued when all conditions are met, and shall expire 180 days after issuance unless the structure has been constructed. Extensions of time may be granted if requested prior to the expiration date. 3. Prior to fmal issuance of a Special Use Permit, the applicant shall submit a finished elevation certificate to ensure that all corners of the proposed dwelling unit are at least one (1) foot above natural grade. Datedthis 6th dayof July ATTEST: Cl€rk of the Board A.D. 19 93 GARFIELD COUNTY BOARD OF COMMISSIONERS, GARFIELD COUNTY, COLORADO Chairman 7 Upon motion duly made and seconded the foregoing Resolution was adopted by the following vote: rilo'er Monkey) ArhanPy Marian I. Smith Arnold L. Mackley , Aye , Aye , Aye • • ?Nix 868= 216 STATE OF COLORADO ) )ss County of Garfield I, - , County Clerk and ex -officio Clerk of the Board of County Commissioners in and for the County and State aforesaid do hereby certify that the annexed and foregoing Resolution is truly copied from the Records of the Proceeding of the Board of County Commissioners for said Garfield County, now in my office. IN WITNESS WHEREOF, I have hereunto set my hand and affixed the seal of said County, at Glenwood Springs, this day of , A.D. 19 County Clerk and ex -officio Clerk of the Board of County Commissioners • 1 Attachment A BOOK 8681v:1217 1_8.2 Sec. 3. A tr. of land in the W+/2SW Tying W. orCo.Rd. 117 and E. of the W. line of Sec. 3 cont. 12.85 Ac. desc. as follows: Beg at a pt. on the W. line of Sec. 3 whence the Sec. Cor. common to Sec. 3,4, 9 and 10 bears S. 01' 01'32" E. 1588.87'; thence E. 1027.38'; thence N. 31'40'48" E. 36.73'; thence N. 47'08'54" E. 41.71'; thence N. 13'35'14" W. 52.92'; thence 14. 37' 21'26" E. 42.09'; thence S. 84'43'06" E. 116.64'; thence 110.04' along the arc of a curve to the left, having a rad. of 173.50', the chord of which bears N. 81' 37'02" E. 108.21'; thence 254.50' along the arc of a curve to the left., having a rad. of 330.0', the chord of which bears N. 41'21'12" E. 248.24' to apt. on the W. ROW line of Co. Rd. 117; thence S. 11'38'50" W. 186.10'; thence S. 31'09'12" W. 465.29'; thence 259.80' along the arc of a curve to the left, having a rad. of 818.60'; the chord of which bears S. 22'03'41" W. 258.71'; thence S. 12'58'10" W, 137.24'; thence N. 52'56'57" W. 318.94'; thence N. 89'30' W. 792.95' to a pt. on the W. line of Sec 3; thence N. 01'01'32" W. 398.24' to the P.O.B. Total: 12.85 Ac. REQUEST: • 64( Pie.04r .L STSr. o44" BOCC 6/15/93 PROJECT INFORMATION AND STAFF COMMENTS Special Use Permit to allow construction of a bridge within the regulated floodplain of Four Mile Creek. APPLICANT• Don and Nanette Seaton LOCATION• Located approximately three (3) miles up Four Mile Creek, south of Chelyn Acres, on the west side of CR 117. WATER: Existing Well SEWER: Existing ISDS TONING: A/R/RD ADJACENT ZONING A/R/RD I. RELATIONSHIP TO THE CQMPREHENSIVB PIAN The subject property is located in District C - Rural Areas - Minor Environmental Constraints as designated on the Comprehensive Plan Management District's Map. [I.ELESCRIPTIONSIETLIRREDEOSAL A. Site Description: The parcel is located approximately three (3) miles up Four Mile Creek, on the west side of County Road 117. A vicinity map is shown on page w B. Developent Proposal: The applicant is proposing to construct a single-family residence and a bridge to access the site. The bridge has a span of 50 feet and the roadway fill necessary for the approaches to the bridge and the abutments will encroach into the floodfringe area. III. MAJOR ISSUES AND COt4CRRNL 1. Floodplain Section 6 of the Zoning Resolution requires an approved Special Use Permit for any development within a regulated floodplain. The purpose of the Special Use Permit review is to assure compliance with various applicable state and federal regulations as well as reviewing technical issues. The applicant's engineer has submitted mapping indicating the relationship of the proposed improvements and the regulated floodplain (see page 40) The 1 • • elevations and clear opening of the bridge have been designed so that there is no net change in the base flood elevation. Approximately 1/3 of the house is located in the floodfringe. Mr. Tim Beck, High County Engineering, has concluded that the finished floor elevation will be one (1) foot above the floodplain, which complies with Garfield County's Floodplain regulations. Mr. Beck's April 19, 1993 Letter is attached on pages J.1� 2. Atm: The applicant will access the proposed improvements using the proposed bridge across Four Mile Creek. 3. Wastewater: The dwelling unit will use a future ISDS. No information has been provided concerning the feasibility of ISDS at the site, but will be reviewed at time of building permit. 4. Wetlands: There are no regulated wetlands on the site. IV. SUGOESTRIMN, INGS 1. That proper publication and public notice was provided as required by law for the hearing before the Board of County Commissioners. 2. That the hearing before the Board of County Commissioners was extensive and complete, that all pertinent facts, matters and issues were submitted and that all interested parties were heard at the hearing. 3. That the application is in compliance with the Garfield County Zoning Resolution of 1978, as amended. 4. For the above stated and other reasons, the proposed use is in the best interest of the health, safety, morals, convenience, order, prosperity and welfare of the citizens of Garfield County. V. RECOMMENDATION Staff recommends approval of the Floodplain S. U.P., with the following condition: 1. Prior to final inspection, the applicant will submit a finished elevation certificate to ensure that all corners of the proposed dwelling unit are at least one (l) foot above the natural grade. • Wlr# cot4brriot4 l • GARFIELD COUNTY d REGULATORY OFFICES AND PERSONNEL 1%.1 ay 10, 1993 Mr. Tim Beck High Country Engineering 923 Cooper Avenue Glenwood Springs, CO 81601 RE: Seaton Floodplain Special Use Permit Dear Tim: Your client's request for a Floodplain Special Use Permit, identified on the enclosed public notice form, has been scheduled for a public hearing before the Board of County Commissioners on Tuesday June 15, 1993 at 9:00 a.m., in the Commissioner's Meeting Room, Suite 301, Garfield County Courthouse, 109 8th Street, Glenwood Springs, Colorado. It is suggested that you be present at the hearing. A copy of the enclosed public notice should be submitted to a newspaper ofgeneral circulation, for publication one time at least 15 days prior to the heating. You should contact the newspaper directly regarding obtaining the proofofpublication and billing. In addition ,copies of the public notice form must be mailed by certified return -receipt to all adjacent property owners no less than 5 days prior to the hearing. The proof of publication from the newspaper of general circulation and return -receipt from the mailings must be submitted by the applicant at, or prior to, the public hearing. I sincerely apologize for the delay, but the Board agenda has become quite busy. Pleasecontact this olrice if you have further questions regarding your application or the public hearing. Sin David H. Michaelson Planner DHM/sa 109 8TH STREET, SUITE 303 • 945-82121625-55711285-7972 • GLENW00D SPRINGS, COLORADO 81601 PUBLIC NOTICE TAKE NOTICE that Don and Nanette Seaton has applied to the Board of County Commissioners, Garfield County, State of Colorado, to grant a Floodplain Special Use Permit in connection with the following described property situated in the County of Garfield, State of Colorado; to -wit: Legal Description: See Attached Practical Description: Located approximately three (3) miles up Four Mile Creek, south of Cheyln Acres Subdivision. Said Special Use Permit is to allow the Petitioner to construct bridge within the Four Mile Creek regulated Floodplain on the above described properties. All persons affected by the proposed Special Use Permit are invited to appear and state their views, protests or objections. If you cannot appear personally at such hearing, then you are urged to state your views by letter, particularly if you have objections to such Special Use Permit request, as the Board of County Commissioners will give consideration to the comments of surrounding property owners and others affected in deciding whether to grant or deny the request for the Special Use Permit. This Special Use Permit application may be reviewed at the office of the Planning Department located at 109 8th Street, Suite 303, Garfield County Courthouse, Glenwood Springs, Colorado, between the hours of 8:00 a.m. ,and 5:00 p.m., Monday through Friday. That public hearing on the application for the above Special Use Permit has been set for the Tuesday the 15th day of June, 1993, at the hour of 9:00 a.m., at the office of the Board of County Commissioners, Garfield County Courthouse, Suite 301, 109 8th Street, Glenwood Springs, Colorado. Planning Department Garfield County RFIiLL'• COUNTY tates Department of the Interior BUREAU OF LAND MANAGEMENT Glenwood Springs Resource Area 50829 Highway 6 and 24 P.O. Box 1009 Glenwood Springs, Colorado 81602 June 14, 1993 Garfield County Planning Department 109 8th Street, Suite 303 Garfield County Courthouse Glenwood Springs, Colorado 81601 IN REPLY REFER TO; 1785g (7-880) Dear Sire: ?!y staff hes reviewed two applications by Don anf Nanette Seaton for a Floodplain Special Use Permit 3 miles up Four Mile Creek in Section 3, T7S, R89W, 6th P.M., and the Lep ,gubdivilion. We do not have any issues, concerns or comments to offer regarding this proposal as it relates to the adjacent public land. Thank you for the opportunity to review and comment on this proposal. Sincerely, -'714-44.4 )/Ar4,/ Michael S. Mottice Area Manager April 19, 1993 Mr. Mark Bean Garfield County Planning 109 8th Street, 3rd Floor Glenwood Springs, CO 81601 RE: Seaton Residence - Four Mile Creek Crossing HCE Job No. 89046.215B Dear Mark: 'JUN 1 6 199 GARFIELD COUNTY Enclosed you will find an application for a Floodplain Special Use Permit for a bridge for a private driveway crossing Four Mile Creek, and for a single family residence that will be partially in the floodfringe. The bridge proposed has a span of 50 feet (drawing enclosed), and the roadway fill necessary for the approaches to the bridge, as well as the abutments will encroach into the floodplain. No permanent structure is proposed to be placed in the floodway; all proposed improvements will be located in the floodfringe area. The elevations and clear opening under the bridge have been set such that no change in the base flood elevation will occur. Approximately one quarter to one third of the house is proposed to be located in the floodfringe area. However, the lowest finish floor elevation - will be at least one foot above the floodplain elevation. Therefore, the construction will comply with the floodplain regulations. We have also enclosed, to aid your review, a portion of the Garfield County Flood Insurance Study base mapping. The property boundaries, driveway, bridge, and house are all shown in relation to the floodplain. The floodfringe is shaded yellow, and the floodway is shaded dark grey. Our best interpretation of the available data indicates that the governing floodplain elevation for the house is 6344, and 6353 for the bridge, on the Flood Insurance Study datum. (The High Country Engineering, Inc. datum for the site, which is based on the City of Glenwood Springs aerial topography datum, is seven feet higher. 923 Cooper Avenue • Glenwood Springs, CO 81601 Telephone: 303.945.8676 • FAX: 303-945-2555 • • Mr. Mark Bean April 19, 1993 Page 2 Please review this application for completeness and prepare publication notice, so that this may be placed on the Commissioners' agenda as soon as possible. If you have any questions or need additional information, please call, Sincerely, HIGH COUNTRY ENGINEE Tim Prin ,thy P. Beck, P.E. ripal Engineer TPB:rjh Encl. to Ito.Ifr scnas I SiOt .( 20630 ; ¢ w Data` 4/16/93. • APPLICATION SPECIAL/CONDITIONAL USE PERMIT Applicants Don L. & Nanette L. Seaton Address of Applicant: Clearwater Special/Conditional Use: for residential driveway Beach, FL 33515 Legal Description: see attachsd deed Practical Description (location with respect to highways, county roads, and reeiciences):Aenroxima elv three miles up Four Mile Road Requirements: x; Plans and specifications for proposed use (hours of operation, no, of vehicles/day, location and size of structures, eta.).' ?'. Sxiating or proposed method of sewage, source of disposal and water. Road access and other information deemed necessary to explain proposed use. 3. A vicinity map drawn to soale depicting the 'subject property, location, and use of building and structures on adjacent lots. 4°. An impact statement on the proposed use where required by, Sections 5.03.5.03.12 of Zoning Regulations. 11/. A copy of Assessor's map showing property; and a listing of ell adjoining property owners of said property. ' .''b". A base,fee of $ shall be charged for each' application and shall be submitted with the application, additional charges may be imposed if County review costs exceed ,the base fee. Attach a copy of proof of ownership for your property .(deed,' title insurance). tf public notice is required, notice provided by the Planning Department shall be sent out at least five (5) days prior to hearing by return -receipt mail to all the above noted adjoining property owners. Mailing is the applicant's responsibility and proof of mailing must be presented at the hearing. Additionally, the same notice shall be published one (1) time in the official County newspaper at least fifteen (15) days prior to such hearing date. Applicant shall bear the cost of publication and be responsible for• presenting the ".Proof of Publication" at the hearing. The above information is correct to the be t of my knowledge. . 4W 4 4 L _ —a -0-71-""N• ,Applicant 44-\7716r5 __Date Roa 51? E4 04024 485,7 817 H 600,940 E 4486,220 16 12.01ROKT3---Ap N 603,797 E 1,466,045 10 601,567 E 1,486,459 el 14 E 01 H E W 601, E 1,48 2514 5 . N 60),84) 601,742 E 1,486,050 1,480,256' 01,654 466,514 6460 645 644 H N 601,682 filk0 8)4 E 1,486,531 • A PORTION OF TOPOGRAPHICWORKSHEET RF-22-2 FOR COLORADORIVER ATRIBUTARIES, DECEMBER1N 19S 2UDY MAPPING 4/25/93 SCALE: 1" = 200' 89046.2158 / 1 \ \ 1 } 1 / I _ ,�. / /1 SEATON SUBDIVISION COMBINED PRELIMINARY PLAN & FINAL PLAT APPLICATION Land Suitability Analysis The Land Suitability Analysis is provided in accordance with Article IV Section 4-502 D of the Garfield County Unified Land Use Resolution and follows the outline provide therein. Di. Public Access to Site: The site will be accessed via the existing drive which has been named Red Barn Lane. Red Barn Lane is located on Lot 2 and provides access for both Tots. It is also already in conformance with current County Standards as set forth in Section 7-307 with proper sight distance, length and grade for safe passage in and out of the property. No improvements shall be necessary for the continued use of this access. Red Barn Lane is best illustrated on the Preliminary Plan Map. D2. Access to Adjoining Roadways: Red Barn Lane adjoins County Road #117 (Four Mile Road). The access as shown on the Preliminary Plat Map is not constrained by any permanent features. No onsite or offsite features prohibit site distance. D3. Easements: The easements are best illustrated on the Preliminary and Final Plat Maps. A 20' Ingress, Egress, Emergency Access & Utility Easement has been situated along the centerline of Red Barn Lane. A 20' Utility Easement has also been provided for access to the shared well located on Lot 1. D4. Topography and Slope: A slope analysis was performed on the property to illustrate areas of slope in access of 20% and areas that are in excess of 30%. Building envelopes were then defined to avoid these areas of steep slopes. See the attached Slope Analysis Exhibit included with Item 3. D5. Natural Features: Four Mile Creek traverses the site and appears to be the only significant natural feature. Building envelopes have been defined to avoid conflicts with this feature. D6. Drainage Features: Four Mile Creek is the only significant drainage feature on the site. Areas to the west of the creek sheet flow directly to the creek and areas to the east of the creek also sheet flow directly to the creek. D7. Water: Potable water for the two lots will be provided by an existing well located on Lot 1. The well was originally permitted under Well Permit No. 173988. In 1994, a Well Construction and Test Report was filed with the State Engineer indicating that the well produced 30 gallons of water per minute over a 3 hour pump test. While the well is only permitted to pump a maximum of 15 gallons of water per minute, the 30 g.p.m. pump test indicates that the well can produce at this maximum rate for a sustained period of time. According to owner Don Seaton, there has never been a shortage of water from the well for the existing uses. According to a letter from attorney Michael Sawyer, the well on the property is augmented by a contract with the West Divide Water Conservancy District. This contract permits the withdrawal of water from the well for use in 2 primary residences, 2 ADUs, and for the irrigation of up to 35,000 square feet of lawn and garden. Because the well is augmented, it can pump water for the two lots even when it would otherwise be out of priority. Thus, the well provides a consistent legal and physical water supply for the subdivision. The State Engineer has issued a new Well Permit that confirms the uses in the West Divide contract (Permit No. 68933-F). D8. Floodplain: A Floodplain Analysis has been enclosed with the Erosion Control & Drainage Analysis. Delineations of the 100 -yr floodplain are best illustrated on the Flood plain map. Delineation of the 100 -yr floodplain can also be found on the Preliminary Plat and Final Plat. D9. Soils: Soil classification and substratum analysis can be found on the attached USDA Web Soil Survey (Exhibit 8). Also attached is a "Subsoil Study for Foundation Design" prepared by Chen Northern Inc., Job 1448792-1; dated 11-3-92, that further analyzes the soil characteristics and recommendations for development on the property. D10. Hazards: A Steep hillside with the potential of rock falls exist on the west side of the property and may provide a hazard to the existing structures on Lot 1. Large boulders may break loose and roll down the steep slopes to the creek bottom and possibly collide with those structures. Such a hazard is evident along many areas of Four Mile Creek where development has been pushed onto the steep hillsides. The proposed subdivision does not propose to expand any further into this hazard area, but rather to utilize the area across the creek for an additional lot. D11. Natural Habitat: Current conditions do not infringe on any known sensitive habitats. Building envelopes have been defined to keep buildings outside of the habitat sensitive areas along Four Mile Creek. A "Vegetation & Wildlife Assessment" dated Nov. 2009 prepared by E.M. Ecological, LLC has been enclosed that further discuses flora and fauna habitat. A Garfield County WRIS checklist has also been enclosed that provides insight to the properties potential wildlife habitat. D12. Resource Areas: A Class I Cultural Resource Study was prepared by Flattops Archaeological Consultants dated 10-9-09, and indicated that no historic properties are affected. SEATON SUBDIVISION COMBINED PRELIMINARY PLAN & FINAL PLAT APPLICATION Impact Analysis The Impact Analysis is provided in accordance with Article IV Section 4-502 E of the Garfield County Unified Land Use Resolution and follows the outline provide therein. El. Adjacent Property: A copy of the pertinent portion of the Garfield County Assessors Map has been enclosed in Exhibit -A, followed by a list from the Title Company of the adjacent land owners and their mailing addresses. E2. Adjacent Land Use: This information is included on Exhibit -A which includes neighboring land uses within 1500' of the subject property. As shown, primarily all the areas to the north, south, and east are zoned rural except for the Sunlight View II Subdivision just to the east of the property that was developed as a PUD. All areas to the west are owned by the BLM. All surrounding land uses are at similar or higher densities than the proposed Seaton Subdivision. E3. Site Features: The site is divided by 4 -mile creek, which runs south to north across the eastern half of the property. The 100 -yr floodplain is best shown within the Floodplain Analysis portion of this application attached with Item 3 . Lot 1 (western portion) is mostly occupied by a steep slope which is vegetated with small to large brush and thick tree cover near the existing residence and stream bed. Lot 2 (eastern portion) is occupied by an existing barn with a driveway, the access drive to Lot 1, and a bridge crossing Four -Mile Creek. On Lot 2 vegetative cover outside the stream bed is primarily native grasses and a few small bushes and trees. E4. Soil Characteristics: In depth soil classification and substratum analysis can be found on the attached USDA Web Soil Survey (Exhibit 8). Also attached is a "Subsoil Study for Foundation Design" prepared by Chen Northern Inc., Job 4448792-1; dated 11-3-92, that further analyzes the soil characteristics and recommendations for development on the property (Exhibit 8). E5. Geology & Hazard: A Steep hillside with the potential of rock falls exist on the west side of the property and may provide a hazard to existing structures and new buildings. Large boulders may break loose and roll down the steep slopes to the creek bottom and may collide with improvements on Lot 1. This hazard is evident all along the 4 mile creek area where development has pushed closer to the steep hillside. Engineered rock barriers around any future sensitive improvements on Lot 1 could help mitigate this potential hazard. E6. Effect on Existing Water Supply & Adequacy of Supply: Water for the two lots in the Seaton Subdivision will be provided by an existing well on the property. The well was originally permitted under Well Permit No. 173988. In 1994, a Well Construction and Test Report was filed with the State Engineer indicating that the well produced 30 gallons of water per minute over a 3 hour pump test. While the well is only permitted to pump a maximum of 15 gallons of water per minute, the 30 g.p.m. pump test indicates that the well can produce at this maximum rate for a sustained period of time. According to owner Don Seaton, there has never been a shortage of water from the well for the existing uses. According to a letter from attorney Michael Sawyer, the well on the property is augmented by a contract with the West Divide Water Conservancy District. This contract permits the withdrawal of water from the well for use in 2 primary residences, 2 ADUs, and for the irrigation of up to 35,000 square feet of lawn and garden. Because the well is augmented, it can pump water for the two lots even when it would otherwise be out of priority. Thus, the well provides a consistent legal and physical water supply for the subdivision. Application has been made to the State Engineer to issue a new Well Permit that confirms the uses in the West Divide contract. A copy of the new Well Permit will be provided prior to the public hearing before the Board of County Commissioners. A copy of the following documents is enclosed in Exhibit C. - Letter from attorney Michael Sawyer -West Divide Water Conservancy District Contract - Application for new well permit -Original Well Permit and Well Construction and Pump Test Report E7. Effect on Groundwater and Aquifer Recharge Areas: The site should have little to no effect on the aquifer recharge area of the site. This is mainly due to the fact that the anticipated impervious areas on the property are minuscule compared to the overall acreage of the land, therefore most of the accumulated rain and snowmelt waters will be comparable to historic rates. Soil infiltration rates are mostly moderate and should have no problem supporting the waste disposal from the dwelling units though ISDS. A USDA Web Soil Survey (Exhibit 8) was prepared and indicates that surface runoff from the steeper area to the west and east sides of the property should be relatively moderate and the hazard for water erosion is slight. Copies of the septic permit applications approved by Garfield County have been attached on Exhibit C. E8. Environmental Effects: Existing environmental conditions have been assessed and reported in the Vegetation & Wildlife Assessment prepared by EM Ecological, LLC dated November 2009. A copy of this assessment can be found in Exhibit D. Existing development is already established on Lot 1. It can be assumed that predevelopment vegetation on this Parcel was similar to surrounding lands and therefore an assessment on predevelopment vegetation verses existing vegetation can be determined. Existing vegetation is consistent with predevelopment vegetation. Minor vegetation and natural habitat was lost due to the development of Lot 1. Some development exists on Lot 2, with future construction of a single family residence. Building envelopes have been situated to have the least amount of impact on existing conditions of the Four -Mile Creek habitat. A copy of Class 1 Cultural Resource Study prepared by Flattops Archaeological Consultants, LLC dated 10/19/09(Exhibit 0) shows that no archaeological, cultural, paleontological, or historic resources are evident on the property. No critical wildlife habitat should be altered or removed. A copy of the Garfield County Wildlife WRIS checklist along with the report prepared by EM Ecological, LLC has been attached showing potential wildlife species on and around this property that may be affected by development (Exhibit 0). The checklist and report indicate that multiple wildlife species may use the habitat established on this property. As stated before, existing development and future building will have little effect on this habitat. No potential radiation hazards have been determined. Spill prevention Control and Countermeasures plan is not applicable. E9. Traffic: Due to the small scale of this subdivision, a detailed traffic study was deemed unnecessary. Current traffic volumes will not be affected by the proposed subdivision, being that the site is currently developed. Future potential ADU's will increase traffic volumes and below is an estimated traffic generation analysis that shows an anticipated 20+ average daily trips will be generated by the potential future ADU development on Lot 1 & Lot 2. This will have very little affect on the existing traffic volumes of CR 117 (Four -Mile Rd.). Also attached is a portion of the Garfield County Road Average Daily Traffic Study Map (Exhibit A) which shows an anticipated 1378+ ADT on CR 117, therefore the future traffic volumes on CR 117 due to the potential ADU development can be anticipated to be around 1388+. Traffic Calculations The following calculations have been used to determine the average daily traffic volume that can be expected to be generated at build out of Seaton Subdivision. Number of future potential ADU's: 2 Number of Vehicles per Weekday generated by each single-family detached residential per the ITE Trip Generation Manual, 6th Edition Vol. 1 Code 210: 9.57 2 future potential ADU's X 9.57 trips/day/residence =19.14 Based on the Capital Improvements Plan as adopted by the Board of County Commissioners, The Seaton Subdivision is subject to a road impact fee of $264.00/ADT for Study Areas 8a through 8d (Per Garfield County) which results in an impact fee of $2,526.48/ residence for a total fee of $5,052.96. E10. Nuisance: No new public improvements are proposed with this Subdivision application, therefore immediate impacts on adjacent land from generation of vapor, dust, smoke, noise, glare or vibration, or other emanations should be imposed. Future construction may consist of minor road grading, site earthwork, construction of a single family dwelling, landscaping, etc. These forms of development shall conform to Garfield County Standards and a general disclosure to future builders and land owners has been added to the Subdivision Site Plan (Exhibit A) which addresses the measures that should be taken to reduce the impacts on adjacent land. Ell. Reclamation Plan: Since no new public improvements or overlot grading is proposed, a reclamation plan consistent with the Garfield County standards is not necessary. A general disclosure to future builders and land owners has been provided on the Subdivision Site Plan (Exhibit A) that addresses the need for reclamation in accordance with Article VII, Section 7-212 of the Garfield County Unified Land Use Resolution. SEA TON SUBDIVISION COMBINED PRELIMINARY PLAN & FINAL PLAT APPLICATION Visual Analysis The Visual Analysis is provided in accordance with Article V Section 5-502 G of the Garfield County Unified Land Use Resolution and follows the outline provide therein. 2a. Future home building on the property is not yet known and therefore a good illustration of such would not be accurate. Site photos and 3D imagery has been provided to illustrate current conditions of the site. 2b. This information can be found on the Site Plan located in Exhibit G of this application. Existing roadways and utilities can be seen along with the proposed building envelopes where existing and future development is/will be located. 2c. No proposed grading, lighting, or landscaping is proposed with this subdivision application. Existing topography, landscaping, and site features can best be summarized with the site photos, 3D imagery and Site Plan map attached. 2d. Existing development on Lot 1 has no visual impact on the surrounding ridgelines as it is hidden under tree canopy and cannot be seen from public roadways. Existing development on Lot 2 has some minor visual impact. Steps have been taken to help mitigate the effects of this visual impact by planting trees around the home site. A general disclosure to future developers and landowners is provided on the Site Plan map that discusses measures that should be taken to help mitigate impacts by planting trees, avoiding irregular roof lines, using natural colors and materials, etc. 1. UN I:UUN 1 Y KL) 1 1 / LUUJ UNU SUUTH ALUNti EAST "'KW -TR 1 Y LINE 2. ON COUNTY RD 1 17 LOOKING WEST ONTO ACCESS DRIVE 3. STANDING NEAR GRAVEL, PULLOUT LOOKING WEST 4. STANDING ON NORTH SIDE OF BARN LOOKING NORTH ONTO DRIVEWAY 5. STANDING AT APPROACH LOOKING SOUTH ALONG EAST PROPERTY LINE 6. STANDING ON CR -149 (CHELYN RD). LOOKING SOUTH 7. STANDING ON EAST SIDE OF CREEK LOOKING STANDING ON WEST SIDE OF BRIDGE WEST ACROSS ACCESS DRIVE BRIDGE LOOKING WEST ONTO ACCESS DRIVE 9. STANDING ON ACCESS DRIVE LOOKING NORTI I WEST AT SETON RESIDENCE 10. ON ACCESS DRIVE LOOKING NORTI I *.Boundaries Unlimited, Inc. 823 Blake Avenue, Ste. 102 Glenwood Springs, CO 81601 tele: 970.945.5252 fax: 970.384.2833 Scale: 1"-120t Date: 10/7/09 ProJ #: 09022 File: Vicinity Garfield County, Colorado Seaton Subdivision Picture Keymap Boundaries Unlimited, Inc. 823 Blake Avenue, Ste. 102 Glenwood Springs, CO 81601 tele: 970.945.5252 fax: 970.384.2833 Scale: N.T.S. Date: 3/18/10 Proj #: 09022 File: Vicinity Garfield County, Colorado Seaton Subdivision Visual Layout SEATON SUBDIVISION COMBINED PRELIMINARY PLAN & FINAL PLAT APPLICATION Article VII Division 1-Genral Standards The following General Standards are provided in accordance with Article VII Section 7-100 of the Garfield County Unified Land Use Resolution and follows the outline provide therein. 7-101 Compliance with Zone District Use Restrictions The proposed zoning will be Rural which compiles to the regulations and is consistent to surrounding development. 7-102 Compliance with Comprehensive Plan and Intergovernmental Agreements The proposed subdivision is consistent with the Zoning, Comprehensive Plan, and the surrounding neighborhood. The property already has two dwelling units. The proposed subdivision will merely place the two existing units on two separate legal parcels. The density of one unit per 6.5 acres already exists on the Seaton Property. This density is also consistent with neighboring developments - Chelyn Acres (2-7 acre lots), Lazy Diamond Subdivision (4-6 acre lots) and Sunlight View II (1-2 acre lots). Both of the proposed lots meet the minimum zoning requirement of 2 acres. 7-103 Compatibility The proposed land use will remain rural in nature and will remain consistent with surrounding land uses and will have no major adverse impacts to adjacent land. 7-104 Sufficient Legal and Physical Source of Water A. Determination of reliability of Water Supply 1. Peak Usage An existing well will serve the subdivision and will pump at a max rate of 15 gpm. 2. Adequacy of Water Supply a. The allowed 15 gpm or 21600 gpd is sufficient for both residential units. b. Not applicable 3. Quality of Water Source Individual water supply treatment facilities for each parcel may be installed at the individual lot owner's discretion. 4. Irrigation Water The well permit has been contracted to supply up to 35,000 sf of lawn and garden for the two parcels. 5. Fire Protection Requirements Discussions with the fire district indicate that developed fire protection for this property was not required due to the close proximity to the district dispatch center along Four Mile Rd. and close proximity to fire hydrants within the Lazy Diamond A and Sunlight View II developments. Future development on the property may be benefitted by the installation of residential fire sprinkler systems. Another suggestion was the installation of a 10-15k gallon water supply holding tank that a tanker could pull from. It was not indicated that this was a requirement, but rather a suggested means of providing additional water storage. B. Individual Wells 1. The proposed density is not greater than 1 unit per 2 acres 2. The existing well has historically provided adequate quality, quantity and dependability. a. In 1994, a Well Construction and Test Report was filed with the State Engineer indicating that the well produced 30 gallons of water per minute over a 3 hour pump test. White the well is only permitted to pump a maximum of 15 gallons of water per minute, the 30 gpm pump test indicates that the well can produce at this maximum rate for a sustained period of time. b. The well is capable of pumping 30 gpm as tested by well contractor. The well permit contract is for a max of 15 gpm. This water is for the use of 2 single family homes a potential 2 ADUs , 35,000 sf of irrigation and 6 livestock. c. A well sharing & easement agreement addresses issues associated with the individual well. d. Individual water supply treatment facilities for each parcel may be installed at the individual lot owner's discretion. 7-105 Adequate Water Supply This section does not apply being that the proposed subdivision is below the minimum of 8 single family dwellings. A. Authority Not applicable. B. Water Supply Requirements Not applicable. C. Water Supplied by Water Supply Entity Requirements Not applicable. D. Determination of Adequate Water Supply Not applicable. 7-106 Adequate Central Water Distribution and Wastewater Systems A. Water Distribution System Standards 1. Central Water Distribution System Preferred A shared well will be utilized as a central well that will serve both lots. 2. Central Water Distribution System Required a. Proximity to Central System The property is in proximity to a public central water system located within Four Mile Rd. but it is not economically feasible to connect to that system for the addition of one lot. b. 15 or More Dwelling Units The subdivision contains less than 15 dwelling units. 3. Design a. Sized for Initial and Future Demand Existing water supply lines have been installed and were sized to accommodate a max supply rate of 7.5 gpm per parcel with the well producing pressures at 40 psi as indicated on the well contractor report. b. Sized for Maximum Day Demand i. The system has been sized for max supply rate verses peak usage. ii. Residual pressure has been measured at 40 psi per the well installation contractor test. iii. Not applicable, future connection for potential ADU's was anticipated in the design of the water supply system. Other connections above and beyond the potential ADUs is very unlikely. c. Water Lines Not applicable d. Stem Design Not applicable e. Water Mains Not applicable f. Quality and Material Specifications i. Not applicable. ii. Not applicable. iii. Not applicable. B. Wastewater System Standards 1. Central Sewer System Preferred The connection to a public sewer system is not economically feasible. Existing ISDS systems are already permitted and in place for both lots. These systems may be expanded to meet future needs. 2. Central Sewer System Required a. Proximity to Central System The property is in proximity to a public central sewer system located within Four Mile Rd. but it is not economically feasible for connection to this system for the proposed two lot subdivision. b. ISDS Not Suitable The proposed lots are of adequate size to incorporate the existing ISDS systems that are currently in operation and to provide for expansion if needed. 3. Design The systems were designed and installed prior to the proposed subdivision of land. Copies of the permits submitted to the County have been attached for the ISDS systems on each lot. a. See the County permits for capacities of both ISDS systems. b. The systems where professionally designed an accepted by the County. i. The collection systems were sized to accommodate current demands. Any future connections to these systems may require additional designs and shall be permitted at the time of future development. ii. The statement/request is incomplete. We are unsure what the County is asking. 4. Occupancy Restrictions Not applicable. 5. Repair & Maintenance Repair, maintenance and associated costs of the ISDS systems shall be the responsibility of the individual lot owner. 6. Public Systems a. Not applicable b. Not applicable 7. Private Systems a. The systems have been designed per County requirements at the time each ISDS system was installed. Both systems have been approved by the County as indicated by the ISDS permits (permits 2196 & 3741) attached. b. See the attached permits. i. Percolation tests were conducted to assure that the designed systems were suitable. ii. Lot size is sufficient for ISDS design. c. Each parcel is capable of accommodating the current ISDS systems. Future potential ADUs on the property may required that the systems be redesigned. This is to be analyzed at the time of design of the future development. 8. Minimum Lot Requirements for Private Systems The private systems comply with the minimum lot requirements set forth in Table 7-105B for "Anaerobic Disposal on Lot" for lots over 2 acres and comply with County & State regulations as permitted by the County. 7-107 Adequate Public Utilities All public utilities and associated utility easements have been provided for access to both parcels. 7-108 Access and roadways An existing public access road on Lot 2 for access to portions of Lot 2 and Egress/Ingress to Lot 1 has been assessed and is in conformance with the current County Standards as set forth in Section 7-307. A. Access to Public Right-of-Way All lots are in direct access to the Red Barn Lane public right of way which connects to County Road #117 (Four Mile Road). B. Safe Access The current access from the Seaton Subdivision to Four Mile Rd is of adequate size with proper sight distance, length and grade for safe passage in and out of the property. No improvements shall be necessary for the continued use of this access. C. Adequate Capacity Current traffic generated from this property has little to no affect on the current traffic volumes of Four Mile Rd. No additional impacts will be generated by the existing dwellings. Future ADUs are subject to a $264 impact fee that will be required if the ADUs are applied for. Any future ADUs will increase the traffic volumes on Four Mile Rd but will not significantly affect traffic volumes to a point where improvements will be needed. 7-109 No Significant Risk from Natural Hazards A. Platting of Land Subject to Natural Hazards Prohibited or Restricted A Steep hillside with the potential of rock falls exist on the west side of the property and may provide a hazard to existing structures and new buildings. Large boulders may break loose and roll down the steep slopes to the creek bottom and may collide with improvements on Lot 1. Such a hazard is evident along many areas of Four Mile Creek where development has been pushed onto the steep hillsides. Engineered rock barriers around any future sensitive improvements on Lot 1 could help mitigate this potential hazard. Geologic hazards have been addressed in the Impact Analysis enclosed as Item 4. The proposed subdivision does not propose to expand any further into this hazard area, but rather to utilize the area across the creek for an additional lot. SEATON SUBDIVISION COMBINED PRELIMINARY PLAN & FINAL PLAT APPLICATION Article VII Division 2 -Resource Protection Standards The following Resource Protection Standards are provided in accordance with Article VII Section 7-200 of the Garfield County Unified Land Use Resolution and follows the outline provide therein. 7-201 Protection of Agricultural Lands A. No adverse Affect to Agricultural Operations No adverse impacts will be generated to agricultural operations with the proposed subdivision. B. Domestic Animal Controls Current and future land owners shall comply with this standard. Any language requirements provided by the County will be added to the plat. C. Fences Existing property boundary fence lines will be maintained to separate the property from adjoining lands. D. Roads Existing roads and drives are located away from property boundaries and fences to allow for maintenance and snow removal and are already surfaced with asphalt that mitigates dust. E. Irrigation Ditches 1. Maintenance Not applicable. 2. Right -of —Way Not applicable. 3. Maintenance Easements Not applicable. 7-202 Protection of Wildlife Habitat Areas A. Buffers Current conditions do not infringe on habitat areas. Future potential development shall be limited to the defined building envelopes which are outside of habitat sensitive areas located along Four Mile Creek. Locational Controls of Land Disturbance No major land disturbance is proposed with the subdivision. Future potential land disturbance shall be limited to the defined building envelopes which are outside of habitat sensitive areas located along Four Mile Creek. B. Preservation of Native Vegetation 1. Vegetation Utilized by Wildlife The proposed subdivision will not reduce the vegetative cover along Four Mile Creek. 2. Removal and Replacement of Native Vegetation Vegetation is not proposed to be removed from the habitat areas along Four Mile Creek. 3. Removal of Noxious Weeds Recommended noxious weed management is outlined in the "Vegetation & Wildlife Assessment" dated Nov. 2009 prepared by E.M. Ecological, LLC. C. Habitat Compensation No critical habitat will be lost due to development therefore, compensation of such habitat is not necessary. D. Domestic Animal Control Current and future land owners shall comply with this standard. Any language requirements provided by the County will be added to the protective covenants. 7-203 Protection of Wetlands and Waterbodies A. Restrictive Inner Buffer 1. Minimum Setback Building setbacks along Four Mile Creek have been situated to be a minimum of 35' from the centerline of the creek. 2. Structures Permitted in Setback No proposed structures are to be constructed within this setback. All existing structures located within this setback are structures that are permitted under this standard i.e. bridges culverts. 3. Structures and Activity Prohibited in Buffer Zone a. No new materials are proposed to be placed in this buffer zone. b. No construction or placement of any structure is proposed within the buffer zone. c. No removal of material is proposed within the buffer zone. d. No vegetation is proposed to be removed from the buffer zone. e. No lowering of the water level or water table is proposed in the buffer zone. f. No disturbance to existing flow patterns is proposed within the buffer zone. 7-204 Protection of Water Quality from Pollutants A. Compliance with State and Federal Regulations No hazardous materials are anticipated to be stored an the proposed subdivision. B. Storage Near Waterbodies Restricted 1. No storage of hazardous materials is anticipated within the subdivision. 2. Stockpiles of sand and salt are not proposed to be stockpiled on the subdivision. C. Spill Prevention No major construction equipment will be used onsite with the proposed subdivision. Smaller equipment will be used for individual building construction which will likely only be onsite for a short period of time so fuel storage is unlikely. D. Machine Maintenance No major construction equipment will be used onsite with the proposed subdivision. Smaller equipment will be used for individual building construction which will likely only be onsite for a short period of time so onsite maintenance of machinery is unlikely. E. Fuel Storage Areas No fuel is proposed to be stored onsite. F. Waste Storage No waste storage is proposed onsite. 7-205 Erosion & Sedimentation No major land disturbance is proposed for the subdivision itself because the infrastructure is already in place. Therefore erosion or sediment controls measure shall not be necessary for the subdivision. Future potential development of buildings or ADUs will require construction plans and possibly CDPHE Permits depending on the extent of disturbance proposed at that time. Those conditions will need to be addressed at the time of building permit application. 7-206 Drainage In accordance with Article IV Section 4-502.C.4.f; of the Garfield County ULUR a drainage plan has been prepared. The prepared drainage plan has been attached within this application. A. Site Design to Facilitate Positive Drainage Lot 1 has already been developed and Lot 2 is rural and drains toward Four Mile Creek. Positive drainage will been to be designed at the time of building permit application. B. Coordination with Area Storm Drainage Pattern 1. No new drainage ditches, detention ponds, or other drainage facilities are proposed with the subdivision. 2. No foundation drains are proposed with this subdivision application. The need for foundation drains should be assessed and, if necessary, designed at the time of building permit application. 3. In general runoff from existing impervious areas flows across grassy open space areas towards Four Mile Creek prior to departing the property. The proposed Tots are on opposite sides of the creek so they will no impact each other with runoff. 7-207 Stormwater Run -Off The majority of existing development is within 100 foot of Four mile Creek. A. Avoid Direct Discharge to Streams or Other Waterbodies 1. Runoff to Vegetated Areas Runoff from existing impervious areas currently sheet flows across grassy open space towards Four Mile Creek. This has been maintained through the use of locating building envelopes away from the creek. 2. On-Site Treatment Sheet flow across grassy open space and ground infiltration will act as on-site treatment facilities. 3. Discharge to Stormwater Conveyance Structure Due to the limited impact of development on the property and rural nature of the subdivision, on- site water treatment facilities have been deemed unnecessary. Much of the runoff from impervious areas will infiltrate into the ground or sheet flow across the grassy open spaces prior to entering the Four Mile Creek drainage way. B. Minimize Directly-Connected impervious Areas 1. Drainage Through Vegetated Pervious Areas Runoff from existing impervious areas sheet flows across grassy open space towards Four Mile Creek. This will occur with future buildings as well. 2. Techniques used in Conjunction with Buffer Strip Sheet flow across grassy open space will suffice in infiltrating and treating the runoff from impervious areas. 3. Grass Buffer Strip Slope Design The site is rural. Therefore, no additional grass buffers strips are proposed. Existing natural grassy open spaces with shallow slopes will be utilized. C. Detain and Treat Runoff 1. Calculated runoff rates for historic & developed conditions during the 100-yr storm event have been attached with the Drainage Narrative in Item 3 of this application. The determined detention requirements found from the calculations performed suggest the possibility of providing 700± cf of detention for both lots to mitigate the impacts of development. Although these calculations suggest detention, Professional Engineering judgment concludes that due to the sites immediate proximity to Four Mile Creek, detaining waters onsite would likely result in adverse affects. Detained waters would take longer to release from the site and would therefore likely end up contributing to the peak flows of Four Mile Creek that arrive to the site much later. Releasing all the runoff from the site immediately would allow the site to stabilize prior to the arrival of peak flows from upstream properties along Four Mile Creek. 2. No new detention facilities are proposed. Four Mile Creek is sufficient to pass the 100-yr flows. 3. No new swales or drainage channels are proposed. 4. No new detention or retention facilities are proposed. 5. No new drainage structures are proposed with the Subdivision. 6. No new on-site detention facilities are proposed. 7-208 Air Quality Air quality should not be reduced below acceptable levels by the proposed subdivision. 7-209 Areas Subject to Wildfire Hazards A. Location Restrictions The site is not located within a severe wildfire hazard area per Garfield County Wildfire USGS Quadrangle. B. Development does Not Increase Potential Hazard The proposed Subdivision will not increase potential wildfire hazard. C. Fuel Modifications No fuel modifications are proposed within the Subdivision. D. Roof Materials and Design Not applicable. E. Safety Areas in Residential Development Not applicable F. Cul-De-Sac Not applicable G. Hammerhead Not applicable H. Road Grade Existing Red Barn Ln. does not have any centerline grades in excess of 8% around horizontal curves or in excess of 10% along tangents. 7-210 Areas Subject to Natural Hazards Be Geological Hazards A. Development Prohibited in Red Zone Hazard Areas (high Hazard) The property is not located within a red zone hazard area. B. Development in Blue Zone Hazard Areas (Special Engineering) 1. Site Constraints The property is not located within a blue zone hazard area. 2. Mitigation of Hazards through Site Design and Engineering. The property is not located within a blue zone hazard area. 3. Activity Will Not Cause or Intensify Adverse Natural Conditions The property is not located within a blue zone hazard area. C. Utilities Above ground utilities are not subject to geological hazards what would require special considerations. D. Development in Avalanche Hazard Areas 1. Certification of Construction The property is not located in a defined avalanche hazard area. 2. Driveway and Roads The property is not located in a defined avalanche hazard area. 3. Vegetation removal Prohibited The property is not located in a defined avalanche hazard area. 4. Extractive Operations prohibited The property is not located in a defined avalanche hazard area. E. Development in Landslide Hazard Areas 1. Construction Practices The property is not located within a defined landslide hazard area. 2. Prohibited Activities a. Adding Water or Weight The property is not located within a defined landslide hazard area. b. Removing Support Material The property is not located within a defined landslide hazard area. c. Increasing Slope The property is not located within a defined landslide hazard area. d. Removing Toe of Land Slide The property is not located within a defined landslide hazard area. F. Development in Rockfall Hazard Areas Lot 1 may be considered to be located in a rockfall hazard area. Steep slopes on the west side of the property provide a hazard to development that is constructed along the west side of Four Mile Creek. Large boulders may break loose and roll down the steep slopes to the creek bottom and may collide with improvements on Lot 1. This hazard is evident along many areas of Four Mile Creek where development has pushed onto the steep hillsides. Engineered rock barriers around any future sensitive improvements on Lot 1 could help mitigate this potential hazard. 1. Construction Practices a. Stabilization Lot 1 has already been developed and Lot 2 is not subject to rockfall hazards. Due to the large steep area of the western slope of the property, stabilization of the entire area would be impractical. b. Catching, Stowing or Diverting Rocks Lot 1 has already been developed and Lot 2 is not subject to rockfall hazards. Rock fences, screening or concrete barriers could be used means of mitigating the rockfall hazard on Lot 1. These devises could be installed around sensitive property at the discretion of the individual property owner. c. Barriers Lot 1 has already been developed and Lot 2 is not subject to rockfall hazards. Rock fences, screening or concrete barriers could be used means of mitigating the rockfall hazard on Lot 1. These devises could be installed around sensitive property at the discretion of the individual property owner. 2. Prohibited Activities a. Adding Water or Weight No additional water or weight is proposed to be added to the sensitive rockfall hazard areas. b. Removing Support Material No additional support material is proposed to be removed with the proposed Subdivision G. Development in Alluvial Fan Hazard 1. Protective Measures The property is not located within a defined alluvial fan hazard area. 2. Disturbance above Alluvial Fan Prohibited The property is not located within a defined alluvial fan hazard area. H. Slope Development 1. Development on Slopes 20% or Greater As defined by Article III Section 3-201.C; as a minimum, one acre of usable space per parcel must be provided that does not include slopes in excess of 20%. In response, a slope analysis was conducted and a building setback was created as a practical means of avoiding development in the areas where slopes are greater than 20%. Therefore, future buildings should be constructed on areas of the property where slopes are less than 20%. 2. Development on Slopes Greater Than 30% a. Cutting & Filling Building envelopes have been provided to minimize cutting, filling and other grading activities. b. Design Shall Fit Site Most of the site has already been developed and follows the natural grade. 3. Development on Unstable or Potentially Unstable Slopes Generally, unstable slopes are found where slopes exceed 30%. Building envelopes have been defined to keep construction outside those areas. Therefore development should avoid any disturbance of potentially unstable slopes. a. Cutting into a Slope Unstable slopes are not proposed to be affected with the proposed Subdivision. b. Adding Water or Weight Unstable slopes are not proposed to be affected with the proposed Subdivision. c. Removing Vegetation Unstable slopes are not proposed to be affected with the proposed Subdivision. d. Over-Steeping Unstable slopes are not proposed to be affected with the proposed Subdivision. 4. Development on Talus Slopes a. Withstand Down Slope Movement No talus slopes are proposed to be impacted by development. b. Buried Foundation and Utilities No talus slopes are proposed to be impacted by development. c. Minimize Site Disturbance No talus slopes are proposed to be impacted by development. d. Removing Toe of Slope No talus slopes are proposed to be impacted by development. I. Development on Corrosive or Expansive Soils and Rock As indicated by the "Subsoil Study" dated 11-3-92 prepared by Chen Northern, Inc., no corrosive or expansive soils & rock should impede development on the properties. 1. Drainage Away from Foundations Drainage away from the foundations of new buildings should be designed at the time of building permit application. 2. Concentrate Runoff into Natural Drainages Impervious areas currently drain onto grassy open spaces that slope towards four Mile Creek. J. Development in Mudflow Areas Not Applicable. K. Development over Faults Not Applicable. 7-211 Areas with Archeological, Paleontological or Historical Importance A Class I Cultural Resource Study was prepared by Flattops Archaeological Consultants dated 10-9-09, and indicated that no historic properties are affected. 7-212 Reclamation A. Applicability 1. Installation of ISDS No new or replacement ISDS is proposed with the subdivision application. Potential buildings or ADUs may require an additional ISDS permit which shall be applied for at the time of approval of such. 2. Driveway Construction No new driveways are proposed with this subdivision application. Potential buildings or ADUs may require a new or extended driveway which shall be applied for at the time of approval of such. B. Reclamation of Disturbed Areas In general, no areas of reclamation for disturbed areas are necessary with this proposed subdivision. Future potential building or ADU development may require the need for compliance to the reclamation standards provided and a disclosure to future developers and land owners has been provided on the site plan. 1. Contouring and Revegetation Not applicable. No areas are proposed to be disturbed with this proposed subdivision application. a. Revegetation of Disturbed Areas Not applicable. No areas are proposed to be disturbed with this proposed subdivision application. 2. Application of Top Soil Not applicable. No removal of topsoil is anticipated with this proposed subdivision application. 3. Retaining Walls Not applicable. No retaining walls are anticipated with this proposed subdivision application. 4. Slash Around Homes Not applicable. No slash is anticipated with this proposed subdivision application. 5. Removal of Debris Not applicable. No areas are proposed to be disturbed with this proposed subdivision application. 6. Time Line plan Not applicable. No areas are to be disturbed with this proposed subdivision application.