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HomeMy WebLinkAbout1.0 ApplicationSKETCH PLAN APPLICATION FOR THE SILT HEIGHTS SUBDIVISION GARFIELD COUNTY, COLORADO HCE JOB NUMBER: 2000023.02 March 12, 2004 Prepared for: Silt Heights Subdivision c/o Terri Patrick P.O. Box 561 Rifle, CO 81650 (970) 625-2534 Prepared by: High Country Engineering, Inc. 1517 Blake Avenue, Suite 101 Glenwood Springs, CO 81601 March 16, 2004 I Terri Patrick agree to allow High Country Engineering to submit an application on my behalf for the Silt Heights Subdivision. ct( J Terri Patrick 1175 County Road 259 Rifle, Colorado 81650 (970) 625-2534 TABLE OF CONTENTS Application Form Garfield County Sketch Plan Requirements Supplemental Information Water Supply Plan SCS Map & Drainage Plan Geotechnical Report Radiation Hazard Report Sketch Plans High Country Engineering, Inc. Zancanella and Associates, Inc. High Country Engineering, Inc. Hepworth-Pawlak Geotechnical, Inc. Hepworth-Pawlak Geotechnical, Inc. High Country Engineering, Inc. k:\wp\2000\023\preconts.doc APPLICATION GARFIELD COUNTY Building & Planning Department 108 8th Street, Suite 201 Glenwood Springs, Colorado 81601 Telephone: 970.945.8212 Facsimile: 970.384.3470 www.garfield-countv.com Subdivision Application Form GENERAL INFORMATION (To be completed by the applicant.) > Subdivision Name: SILT HEIGHTS SUBDIVISION > Type of Subdivision (check one of the following types): Sketch Plan X Preliminary Plan Final Plat Name of Property Owner (Applicant): TERRI PATRICK Address: P. O. Box 561 Telephone: (970) 625-2534 > City: Rifle State: CO Zip Code: 81650 FAX: N/A Name of Owner's Representative, if any (Attorney, Planner. etc): STUVER & LeMOINE, P.C. > Address: 120 West Third Street Telephone: (970) 625-1887 > City: Rifle State: Co Zip Code: 81650 FAX: 970/625-4448 • Name of Engineer. Address: HIGH COUNTRY ENGINEERING, INC. Telephone: (970) 945-8676 > City: Glenwood Springs State: C0 Zip. Code: 81601 FAX: • Name of Surveyor. • Address: HIGH COUNTRY ENGINEERING; INC. Telephone: (970) 945-8676 i City: Glenwood Springs State: CO Zip Code: 81601 FAX: > Name of Planner: • Address: N/A Telephone: City: State: Zip Code: FAX: GENERAL INFORMATION continued... > Location of Property: Section 27, 28, 34 Township 5 southRange 92 West > Practical Location / Address of Property: County Road 259 > Current Size of Property to be Subdivided (in acres): 36.44 > Number of Tracts / Lots Created within the Proposed Subdivision: five (5) > Property Current Land Use Designation: 1. Property's Current Zone District: A/R/RD 2. Comprehensive Plan Map Designation: Outlying Residential Proposed Utility Service: > Proposed Water Source: Private wells > Proposed Method of Sewage Disposal: 1. s . D . s . > Proposed Public Access VIA: county Road 259 Utility: Qwest; Excel > Easements: Ditch: Farmers Irrigation > Total Development Area (fill in the appropriate boxes below): ",iR sm`33 9 • r F1 .....•, ��aa�� -i_.;� `ft".�`;7„1. c 4 12 ,:.(s ..."'`.r ..,-,rr d—_ r1w..v i:� `f 2�:,r ..__i , rf.c-'t�''•••::.1.:«...Z.-.-.:.•••'.7:.• "tea:-r=`-_�_ _-. = `cio Tit " r z 7- rof -y-iimrry,�( T?: -1,7731x' __--» � _ __ _ > Base Fee: Sketch Plan - 5325.00; Prelim Plan - 5675.00; Final Plat - 5200 paid on > Plat Review Fee (see attached fee schedule) 2 I. THE SUBDIVISION PROCESS In order to subdivide land in Garfield County, an Applicant is required to complete the following land use processes in the following order: 1) Sketch Plan Review Process, 2) Preliminary Plan Review Process, and 3) Final Plat Review Process. This section will briefly describe the nature of each process and provide general direction including subdivision regulation citations to a potential applicant requesting subdivision approval in Garfield County. All of the Garfield County Zoning and Subdivision Regulations are located for purchase at the Planning Department and can also be found on the World Wide Web at the following address: http://www.garfield-county.com/building and planninq/index.htm A) The Sketch Plan Review (Section 3:00 of the Subdivision Regulations) 1. Purpose The purpose of the Sketch Plan process is to allow an individual an opportunity to propose a subdivision in a "sketch" format to the Planning Department and the Garfield County Planning Commission in order to obtain a cursory review for compliance with the County's land use review documents, regulations, and policies to identify any issues that would need to be addressed if the proposed subdivision were to be pursued. 2. Applicability Any individual proposing a subdivision in Garfield County is required to complete the Sketch Plan review process as the first step in Garfield County's Subdivision process. More specifically, Garfield County defines a subdivision (Section 2:20.48) as the division of a lot, tract or parcel of land into two (2) or more lots, tracts, parcels or separate interests, or the use of any parcel of land for condominiums, apartments or other multiple -dwelling units, as further defined by Colorado state law. 3. Application / Submittal Requirements In order to apply for a Sketch Plan Review an Applicant is responsible for reviewing Section 3:00 of the Subdivision Regulations and providing enough information to the Planning Department in the application to conduct a thorough review and provide the resulting comments to the Planning Commission for their review and comments. Specifically, Section 3:30, 3:32, and 3:40 of the Subdivision Regulations contain the specific information required to be submitted to the Planning Department in order to satisfy the application requirements in addition to the information requested on this application form. 4. Process / Public Meeting The Sketch Plan review process is considered a 1 -step process because the application is reviewed only by the Planning Commission at a public meeting. In order to appear before the Planning Commission, an applicant will have submitted all required application submittal requirements mentioned above to the Planning Department Staff. Once submitted, Staff will have 15 working days to review the application to determine if all the required submittal information has been submitted as required. If Staff determines that all the required information has been submitted, a letter will be sent to the applicant indicating the application has been deemed "technically complete." It is at this point Staff will also indicate when the application has been scheduled to be reviewed before the Planning Commission and will request the applicant supply additional copies to provide the Commission for their review. If Staff determines that all the required information has not been submitted, a letter will be sent to the applicant indicating the application does not comply with the submittal requirements and therefore has determined the application to be "technically incomplete." The letter will also outline the applications deficiencies so that the applicant knows what additional information needs to be submitted. At this point, the applicant has 6 months (180 days) to provide the necessary information to the Planning Department to remedy the application so that it may be deemed technically complete. If the application has not been deemed technically complete within this time, the application will be terminated. Once the application has been deemed technically complete and a date has been established as to when the Planning Commission will review the application, Staff will conduct a land use review of the application using the County's land use regulatory documents including the Zoning Resolution, Subdivision Regulations, and the Comprehensive Plan of 2000. In addition, Staff will also consider referral comments provided from a variety of state and local agencies who may also review the application. As a result, Staff will write a Memorandum on the proposed subdivision to the Planning Commission containing the results on the land use analysis. This Memorandum will also be furnished in advance to the applicant. At the date and time set for the public meeting before the Planning Commission, Staff will present the findings in the Memorandum and the applicant will be required to present the proposed subdivision and respond to comments and questions provided by the Planning Commission. The comments provided to the Applicant by the Planning Department and the Planning Commission as a result of the Sketch Plan Process will be kept on file in the Planning Department for 1 -year from the meeting date before the Planning Commission. If an Applicant does not submit a Preliminary Plan application to the Planning Department within the 1 -year timeframe, the Sketch Plan file will be closed and the Applicant will need to reapply for a Sketch Plan review prior to a Preliminary Plan review. B) Preliminary Plan Review (Section 4:00 of the Subdivision Regulations) 1. Purpose The purpose of the Preliminary Plan review process is to conduct a thorough review of the many aspects that are associated with dividing land in Garfield County for the purposes of residential, commercial, and industrial development. This is the most intensive review step where the Building and Planning Staff, the Planning Commission, and the Board of County Commissioners (BOCC) will conduct a thorough review of all the issues associated with the proposed subdivision against the County's regulatory requirements. Ultimately, the purpose of this process is to identify all the major issues in the proposed subdivision by using the County's Zoning Resolution, Subdivision Regulations, Comprehensive Plan of 2000, as well as other state and local referral agencies that will provide comments on any issues raised in their review. This is the process that will either approve or deny the application request. 2. Applicability Any individual proposing a subdivision in Garfield County is required to complete the Preliminary Plan review process as the second and most intensive step in Garfield County's Subdivision process. More specifically, Garfield County defines a subdivision as the division of a lot, tract or parcel of land into two (2) or more lots, tracts, parcels or separate interests, or the use of any parcel of land for condominiums, apartments or other multiple -dwelling units, as further defined by Colorado state law. 3. Application / Submittal Requirements In order to apply for a Preliminary Plan Review, an Applicant must have already completed the Sketch Plan review process addressed in Section 3:00 of the Subdivision Regulations. An applicant requesting Preliminary Plan review will be required to submit this application form, all the required submittal information contained in Sections 4:40 to 4:94 of the Subdivision Regulations as well as address all of the applicable Design and Improvement Standards in Section 9:00 of the Subdivision Regulations. In addition to the substantive submittal information related to the proposed subdivision project itself, an applicant is required to complete all the public notice requirements so that legal public hearings can be held before the Planning Commission and the BOCC which is addressed in Sections 4:20 — 4:31 of the Subdivision Regulations. 4. Process / Public Hearings The Preliminary Plan review process is considered a 2 -step process because the application is ultimately reviewed by two County decision-making entities during public hearings: the Planning Commission who makes a recommendation to the BOCC. In order to obtain dates for the public hearings before the Planning Commission and the BOCC, an applicant will have submitted all required application submittal requirements mentioned above to the Planning Department Staff. Once submitted, Staff will have 30 working days to review the application to determine if all the required submittal information has been submitted as required. If Staff determines that all the required information has been submitted, a letter will be sent to the applicant indicating the application has been deemed "technically complete." It is at this point Staff will also indicate when the application has been scheduled to be reviewed before the Planning Commission / BOCC. Additionally, Staff will provide the applicant with the notice forms to be mailed, published, and posted. If Staff determines that all the required information has not been submitted, a letter will be sent to the applicant indicating the application does not comply with the submittal requirements and therefore has determined the application to be "technically incomplete." The letter will also outline the applications deficiencies so that the applicant knows what additional information needs to be submitted. At this point, the applicant has 6 months (180 days) to provide the necessary information to the Planning Department to remedy the application so that it may be deemed technically complete. If the application has not been deemed technically complete within this time, the application will be terminated. Once the application has been deemed technically complete and a date has been established as to when the Planning Commission / BOCC will review the application, Staff will conduct a land use review of the application using the County's land use regulatory documents including the Zoning Resolution, Subdivision Regulations, and the Comprehensive Plan of 2000. In addition, Staff will also consider referral comments provided from a variety of state and local agencies who may also review the application. As a result, Staff will write a Memorandum on the proposed subdivision to the Planning Commission / BOCC containing the results on the land use analysis. This Memorandum will also be furnished in advance to the applicant prior to the public hearings. As mentioned above, Staff makes a recommendation to the Planning Commission and the BOCC regarding the issues raised in the analysis of the proposed subdivision. The Applicant will first propose the subdivision to the Planning Commission who is responsible for making a recommendation of approval, approval with conditions, or denial to the BOCC. Next, the application will be reviewed by the BOCC during a regular public hearing. The BOCC will consider the recommendations from the Planning Staff and the Planning Commission, the information presented by the applicant, and the public. As a result, the BOCC is the final decision-making entity regarding the proposed subdivision and will either approve, approve with conditions, or deny the application. If the BOCC approves the subdivision application at the public hearing, the approval shall be valid for a period not to exceed one (1) year from the date of Board approval, or conditional approval, unless an extension of not more than one (1) year is granted by the Board prior to the expiration of the period of approval. (See the specific information provided in Section 4:34 of the Subdivision Regulations.) Following the hearing, Staff will provide a resolution signed by the BOCC which memorializes the action taken by the Board with any / all conditions which will be recorded in the Clerk and Recorder's Office. Once an applicant has Preliminary Plan approval, they are required to complete the third and final step in the County's Subdivision Process: Final Plat Review. C) Final Plat Review (Section 5:00 of the Subdivision Regulations) 1. Purpose The purpose of the Final Plat review process is to provide the applicant with a mechanism to prove to the County that all the conditions of approval required during the Preliminary Plan review process have been met / addressed to the satisfaction of the Planning Staff and the BOCC. This being the case, the chairman of the BOCC will sign the Final Plat and have it recorded memorializing the subdivision approval granted by the BOCC. This is the last step in the County's subdivision process. 2. Applicability Any individual proposing a subdivision in Garfield County is required to complete the Final Plat review process as the third and last step in Garfield County's Subdivision process. More specifically, Garfield County defines a subdivision as the division of a lot, tract or parcel of land into two (2) or more lots, tracts, parcels or separate interests, or the use of any parcel of land for condominiums, apartments or other multiple -dwelling units, as further defined by Colorado state law. 3. Application / Submittal Requirements In order to apply for a Final Plat review, an Applicant must have already completed the Preliminary Plan review process addressed in Section 4:00 of the Subdivision Regulations. An applicant requesting Final Plat review will be required to submit this application form, all the required submittal information contained in Section 5:00 of the Subdivision Regulations and responses to all the conditions of approval required as part of the Preliminary Plan review process. 4. Process The Final Plat review process is considered a 1 -step process because the application is ultimately reviewed by the Building and Planning Staff and presented to the BOCC for their signature if the application satisfies all the required submittal information to the satisfaction of the Building and Planning Department. If Staff determines that all the required information has been submitted, a letter will be sent to the applicant indicating the application has been deemed "technically complete." It is at this point Staff will also indicate when the application has been scheduled to be presented to the BOCC for signature. (This is not a public hearing or meeting and therefore does not require public notice.) If Staff determines that all the required information has not been submitted, a letter will be sent to the applicant indicating the application does not comply with the submittal requirements and therefore has determined the application to be "technically incomplete." The letter will also outline the applications deficiencies so that the applicant knows what additional information needs to be submitted. Once the application has been deemed technically complete and a date has been established as to when the BOCC will review the Final Plat, Staff will review the application / Final Plat in terms of adequacy to determine if all the submittal information satisfies the Final plat requirements as well as the responses to the conditions of approval. During this review, Staff will forward the Final Plat the County Surveyor for review and a signature. In the event there are additional questions or clarification issues to be addressed, the County Surveyor will generally contact the applicant to have the plat adjusted as necessary. Once, Staff has completed the review and all required information has been submitted to the satisfaction of the Planning Department and the County Surveyor has signed the Final Plat in Mylar form, it will be scheduled at the next BOCC meeting to be placed on the consent agenda with a request to authorize the Chairman of the BOCC to sign the plat. Once the Final Plat is signed, it is then recorded by the County Clerk in the Clerk and Recorder's Office for a fee of $11 for the first sheet and $10 for each additional sheet thereafter. This fee shall be paid by the applicant. This act of recording the signed Final Plat represents the completion of the Garfield County Subdivision Process. Please refer to the specific language in the Final Plat portion (Section 5:00) of the Subdivision Regulations for specific timelines and additional responsibilities required of the applicant to complete the Final Plat process. Please Note: This information presented above is to be used as a general guide for an applicant considering a subdivision in Garfield County. It is highly recommended that an applicant either purchase the Garfield County Zoning Resolution and Subdivision Regulations or access them on-line at: http://www.garfield-county.com/building and planning/index.htm in order to ascertain all the necessary requirements for each of the three steps including Sketch Plan Review, Preliminary Plan Review, and Final Plat Review. I have read the statements above and have provided the required attached information which is correct and accurate to the best of my knowledge. (Signature of applicant/owner) Last Revised: 11/21/2002 -3/3 070 I Date GARFIELD COUNTY SKETCH PLAN REQUIREMENTS GARFIELD COUNTY PRELIMINARY PLAN REQUIRMENTS SILT HEIGHTS SUBDIVISION The following outlines each element of the subdivision regulations and notes generally where this information can be found in the application. REGULATION REFERENCE SECTION NO. DESCRIPTION LOCATION 3:30 SKETCH PLAN MAP MAP SHEET # 1 3:32 SKETCH PLAN MAP 3:32 A Name of Subdivision MAP SHEET # 1 3.32 B Boundary & Legal MAP SHEET # 1 3.32 C Names of Owner, Eng. Etc MAP SHEET # 1 3.32 D Date, Scale, North MAP SHEET # 1 3.32 E Topography MAP SHEET # 1 3.32 F General Locations, Etc MAP SHEET # 1 3.32 G Buffering or Screening N/A 3.32 H Vicinity Map MAP SHEET # 1 3.32 I Land Use Summary MAP SHEET # 1 3:40 SUPPLEMENTAL INFORMATION 3.40 A Source and Amount of Water Supply HCE Report 3.40 B Proposed Sewage Disposal HCE Report 3.40 C Drainage Study (USDA SCS Data) HCE Drainage Plan 3.40 D Impact Statement Lakes, Etc HP GEOTECH REPORT 3.40 E Radiation Hazard HP GEOTECH REPORT 3.40 F Access Public ROW HCE Report 3.40 G Source of Shallow Utilities HCE Report SUPPLEMENTAL INFORMATION SILT HEIGHTS SUBDIVISION SKETCH PLAN SUBMITTAL SUPPLEMENTAL INFORMATION January 14, 2002 WATER The Silt Heights Subdivision will be served by individual water wells. The individual water demand of the subdivision will be typical of a single-family residential community. Each single-family lot can be expected to demand approximately 420 gallons/day based on a 3.5 persons/residence occupancy rate. Individual lot owners will be responsible for well drilling, water treatment and maintenance. See the attached letter provided by Zancanella and Associates Inc. SEWER The Silt Heights Subdivision will be served by Individual Sewage Disposal Systems (ISDS). The sewage generated by the subdivision will be typical of a single-family residential community. Each single-family lot can be expected to generate approximately 350 gallons/day based on a 3.5 persons/residence occupancy rate. Individual lot owners will be responsible for the installation of an engineered ISDS. Maintenance of each system will be the responsibility of the individual lot owner and as outlined in the protective covenants of the subdivision. SCS MAPS AND TABLES See attached drainage plan by High Country Engineering, Inc., and the soils report provided by Hepworth-Pawlak Geotechnical Inc. SHALLOW UTILITIES Telephone — Qwest, CR 259 (overhead) Electric — XCEL, CR 259 (overhead) Gas — LP (homeowner installed) Cable TV — N/A According to Tillmon McSchooler from XCEL Energy, the nearest natural gas main exists within CR 233, which is about 1 mile South of the proposed development. Therefore, it is the responsibility of the individual homeowner to install and maintain a service agreement for liquid propane service. IMPACT ON LAKES, STREAMS, AND TOPOGRAPHY The development will have minimal impact on drainages running through the property. Lots are laid out such that adequate building envelope is available without impacting the existing drainages. The driveways will follow existing topography as much as acceptable engineering practices allow. Where drainage crossings are required, adequately sized culverts will be installed to convey the historical flows through the property. There are no lakes within or around the property. RADIATION HAZARD See attached radiation hazard report, provided by Hepworth-Pawlak Geotechnical Inc. OFF-STREET PARKING Only single-family residential uses are proposed: Four off street parking spaces per lot, for a total of 20, will be provided for this development. ACCESS All lots on the development will have access to County Road 259. VEGETATION The site lies at the toe of the Grand Hogback and consists of rolling pastureland. Existing vegetation includes mature cottonwood trees, sagebrush, and grasses. A stock pond also exists on the site. Commonwealth Title Company of Garfield County, Inc. 127 E. 5th Street / P.O. Box 352 Rifle, CO 81650 Phone: 970-625-3300 Fax: 970-625-3305 803 Colorado Avenue Glenwood Springs, CO 81601 Phone: 970-945-4444 Fax: 970-945-4449 Date: February 10, 2004 To: STUVER & LEMOINE, P.C. Phone: 625-1887 Attn: Dan LeMoine Fax: 625-4448 P. O. BOX 907 RIFLE, CO 81650 RE: Terri Patrick Owners Within 200 Feet xx Commitment Title Policy Endorsement Tax Certificate Other Other Thank you for your order. Enclosed please find the following: in connection with our File No Copies sent to: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 PROPERTIES WITHIN 200 FEET OF TERRI PATRICK'S PROPERTY (SECTIONS 27, 28 & 34, TOWNSHIP 5 SOUTH, RANGE 92 WEST) Jewell, John S. and Georgann Milton, Terry D. 280 County Road 259A Rifle, CO 81650-9721 2127-284-00-169 (28-5-92) 1180 County Road 259 Rifle, CO 81650 2127-273-00-261 (27-5-92) Mulvihill, Gene 355 Madison Avenue #3 Morristown, NJ 07960-6910 2127-281-00-168 (28-5-92) Dwire, Man F. and Linda L. 1164 County Road 259 Rifle, CO 81650 2127-342-00-153 (34-5-92) Field, M. Lynda Torres, Eric Smokey and Leslie H. 704 County Road 259 Rifle, CO 81650 2127-342-00-154 (34-5-92) P.O. Box 554 Glenwood Springs, CO 81602 2127-342-00-155 (34-5-92) CoQuoz, Robert L. and Sue A. Bailey, Dan L. and Dawn R. 1177 County Road 250 Rifle, CO 81650 2127-273-00-267 (27-5-92) 1171 County Road 250 Rifle, CO 81650 2127-272-00-285 (27-5-92) Roberts, Rhonda and Mary Jo 1529 County Road 259 Rifle, CO 81650 2127-273-00-256 (27-5-92) MINERAL RIGHTS OWNERS: Urban, Lee Roy Jewell, Tammy Lorraine 0284 County Road 259A Rifle, CO 81650-9721 818 Whiteriver Avenue Rifle, CO 81650 MINERAL RIGHTS LESSEES: Williams Production RMT Company 1515 Arapahoe Street Tower #3, Suite #1000 Denver, CO 80202 WARRANTY DEED THIS DEED, Made this 16th day of July, 1997, between KENNETH L. ELDER and JANEY RUTH ELDER aka J. RUTH ELDER aka RUTH ELDER, of the County of Garfield and State of Colorado, Grantors, and JAMES R. HUBBARD and TERRI PATRICK, Tenants in Common, whose legal address is P. O. Box 561, Rifle, of the County of Garfield, State of Colorado, Grantees: WITNESSETH, That the Grantors for and in consideration of the sum of Ten Dollars ($10.00) and other good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, have granted, bargained, sold and conveyed, and by these presents do grant, bargain, sell, convey and confirm, unto the Grantees, their heirs, successors and assigns forever, all the real property, together with improvements, if any, situate, lying and being in the County of Garfield, State of Colorado described as follows: That real property described on Exhibit A attached hereto, subject to a MEW MOMw permanent, non-exclusive access and utility easement described as set forth on � o Exhibit B, which access and utility easement is for the benefit of the e properties described on Exhibit A, as well as Exhibit C, D and E attached ct)=v w hereto. All exhibits attached hereto are incorporated herein by reference. -- el re a LI Also subject to easements in location to be determined as necessary and = N m sufficient for the construction, operation and maintenance of pumps and =m, buried pipelines from the Farmers Irrigation Ditch to the parcels described a z on Exhibits D and E attached to this deed. to irs _.. m Qm o By accepting delivery of the within deed, Grantees covenant and agree not to =ra o place, at any time, a gate or other obstruction across the easement described �' °,1' on Exhibit B attached to this deed, unless Grantees have obtained, in writing, ,....j..-; ,,,i, the permission of all property owners who have a lawful right to use said —� r, easement. This covenant shall run with the land, shall be perpetual, and shall C : m r- be binding upon Grantees' co-owners and successors. This covenant shall not .- prevent construction of a cattle guard on said easement. TOGETHER with any wells, well water and water rights used in, on or in connection with said property, including five (5) shares of Farmers Irrigation Ditch stock, together with easements and ditches in place and in use sufficient to divert, transport and use said water on the property described in Exhibit A. TOGETHER with all and singular the hereditaments and appurtenances thereto belonging, or in anywise appertaining, and the reversion and reversions, remainder and remainders, rents, issues and profits thereof, and all the estate, right, title, interest, claim and demand whatsoever of the Grantors, either in law or equity, of, in and to the above - bargained premises, with the hereditaments and appurtenances. 1ZR uvr1 �G'. %\-c a.1c..r a C.,,,orc C- P.C. Q.O. Vol. Ct()-1 , C Q 81 Lt 5(, TO HAVE AND TO HOLD the said premises above -bargained and described, with the appurtenances, unto the Grantees, their heirs, successors and assigns forever. And the Grantors, for themselves, their heirs, successors and assigns, do covenant, grant, bargain, and agree to and with the Grantees, their heirs, successors or assigns, that at the time of the ensealing and delivery of these presents, are well seized of the premises above conveyed, have good, sure, perfect, absolute and indefeasible estate of inheritance, in law, in fee simple, and have good right, full power and lawful authority to grant, bargain, sell and convey the same in manner and form as aforesaid, and that the same are free and clear from all former and other grants, bargains, sales, liens, taxes, assessments, encumbrances and restrictions of whatever kind or nature soever, except subject to the 1997 general property taxes, patent reservations, prior mineral reservations, restrictions, easements of record and in place and in use, mineral reservations and leases thereof. The Grantors shall and will WARRANT AND FOREVER DEFEND the above - bargained premises in the quiet and peaceable possession of the Grantees, their heirs, successors and assigns, against all and every person or persons lawfully claiming the whole or any part thereof. The singular number include the plural, the plural the singular, and the use of any gender shall be applicable to all genders. IN WITNESS WHEREOF, the Grantor has executed this deed on the date set forth above. , f aney lder,a15a J. Ruth er aka Kenneth L. Elder Ru h'Elder �J e STATE OF COLORADO ) ) ss COUNTY OF GARFIELD ) The foregoing instrument was acknowledged before me this 16th day of July, 1997, by JANEY RUTH ELDER aka J. RUTH ELDER aka RUTH ELDER and KENNETH L. ELDER. Witness my hand and official seal. My Commission ires: r� y Public Ntary P 1IIIlli 11111 111111 11111 1111 111111 111111111 VIII 11111111 511059 07/17/1997 09:06A B1026 P379 432 2 of 7 R 36.00 D 10.00 N 0.00 GARFIELD CLERK EXHIBIT A A TRACT OF LAND SITUATED IN THE NE1/4 NE1/4 AND THE SE1/4 NE1/4 OF SECTION 28, THE NW1/4 SWY AND THE SW1/4 SW1/4 OF SECTION 27 AND THE NW1/4 NW1/4 OF SECTION 34, TOWNSHIP 5 SOUTH, RANGE 92 WEST OF THE 6TH P.M., COUNTY OF GARFIELD, STATE OF COLORADO, SAID TRACT OF LAND BEING MORE PARTICULARLY DESCRIBED AS FOLLOWS: (ALL BEARINGS IN THIS DESCRIPTION ARE RELATIVE TO THE WEST LINE OF THE SW1/4 OF SAID SEC11ON 27 AS BEARING N. 00412'00" W.) BEGINNING AT THE SOUTHWEST CORNER OF SAID SECTION 27, SAID SOUTHWEST CORNER BEING A BRASS CAP AND STANDARD MONUMENT P.L.S. #10732; THEN S. 00405'33" E. ALONG THE WEST LINE OF SAID NW1/4 NW1 . OF SAID SECTION 34 A DISTANCE OF 69.92 FEET; THEN DEPARTING SAID WEST LINE 119.59 FEET ALONG THE ARC OF A NON -TANGENT CURVE TO THE RIGHT HAVING A RADIUS OF 66.79 FEET, A CENTRAL ANGLE OF 102435'11" AND A CHORD WHICH BEARS N. 51204'22" E. 104.24 FEET; THEN S. 77437'58" E. 20.94 FEET; THEN 107.49 FEET ALONG THE ARC OF A CURVE TO THE LEFT HAVING A RADIUS OF 800.00 FEET, A CENTRAL ANGLE OF 07441'54" AND A CHORD WHICH BEARS S. 81428'55" E. 107.41 FEET; THEN S. 85419'52" E. 150.72 FEET; THEN N. 02444'07" E. 906.33 FEET; THEN N. 02408'39" E. 906.62 FEET; THEN N. 84420'59" W. 443.78 FEET; THEN S. 81410'08" W. 582.74 FEET; THEN S. 01406'08" E. 443.92 FEET; THEN S. 06215'25" E. 760.77 FEET; THEN 35.11 FEET ALONG THE ARC OF A CURVE TO THE LEFT HAVING A RADIUS OF 160.00 FEET, A CENTRAL . C ANGIe OF 12434'23' AND A CHORD WHICH BEARS S. 12432'39" E. 35.04 FEET; THEN S. 18449'52" E. 203.24 FEET; THEN 94.65 FEET ALONG THE ARC OF A CURVE TO THE LEFT HAVING A RADIUS OF 400.00 FEET, A CENTRAL ANGLE OF 13433'28" AND A CHORD WHICH BEARS S. 25436'37" E. 94.43 FEET; THEN S. 61422'12" E. 236.68 FEET; THEN S. 64402'26" E. 187.83 FEET TO THE EAST LINE OF SAID SE1/4 NE1/4; THEN ALONG SAID EAST LINE S. 00412'00" EAST 21.00 FEET TO THE POINT OF BEGINNING. SAID -TRACT OF LAND- CONTAINS* 36.44 ACRES AS' DESCRIBED: 1111111 111111011$11 9 6A 13 111111111 111111411 511059 07/17/1997 0:01026 P380 3 of 7 R 36.00 D 10.00 N 0.00 GARFIELD CLERK EXHIBIT B AN EASEMENT FOR THE PURPOSE OF INGRESS, EGRESS AND UTILITIES, SAID EASEMENT BEING THIRTY FEET (30.00') IN WIDTH, SAID EASEMENT ENCOMPASSING THE FOLLOWING DESCRIBED AREA BEING SITUATED IN SECTION 27, TOWNSHIP 5 SOUTH, RANGE 92 WEST OF THE 6TH P.M., COUNTY OF GARNI.LLD, STATE OF COLORADO, SAID EASEMENT BEING MORE PARTICULARLY DESCRIBED AS FOLLOWS: (ALL BEARINGS IN THIS DESCRIPTION ARE RELATIVE TO THE WEST LINE OF THE SW1/4 OF SAID SECTION 27 AS BEARING N. 00212'00" W.) BEGINNING AT A POINT FROM WHICH THE WEST 1/4 CORNER OF SAID SECTION 27 BEARS N. 25235'02' W. 960.08 FEET, SAID WEST 1/4 CORNER BEING A BLM STANDARD MONUMENT; THEN S. 02208'39" W. 908.31 FEET; THEN S. 02244'07" W. 905.16 FEET; THEN S. 85219'53" E. 30.02 FEET; THEN N. 0244'07" E. 906.33 FEET; THEN N. 02208'39" E. 906.62 FEET; THEN N. 84220'59" W. 30.05 FEET TO THE POINT OF BEGINNING. 1 II111111111111111111111111111111111111141 11111 till 1111 611039 07/17/1997 09:06A 81026 P381 432 4 of 7 R 36.00 D 10.00 N 0.00 GARFIELD CLERK EXHIBIT C A TRACT OF LAND SITUATED IN THE NW'/ SW1 AND THE SW1/4 SW1/4 OF SECTION 27 AND IN THE NW'/. NW'/4 OF SECTION 34, TOWNSHIP 5 SOUTH, RANGE 92 WEST OF THE 6TH P.M., COUNTY OF GARFIELD, STATE OF COLORADO; SAID TRACT OF LAND BEING MORE PARTICULARLY DESCRIBED AS FOLLOWS: (ALL BEARINGS IN THIS DESCRIPTION ARE RELATIVE TO THE WEST LINE OF THE SW1 OF SAID SECTION 27 AS BEARING N. 00412'00" W.) BEGINNING AT A POINT FROM WHICH THE WEST 1/4 CORNER OF SAID SECTION 27 BEARS S. 84420'59" W. 443.78 FEET AND N. 00412'00" W. 825.23 FEET; THEN S. 02408'39" W. 906.62 FEET; THEN S. 02444'07" W. 906.33 FEET; THEN 100.13 . FEET ALONG THE ARC OF A CURVE TO THE LEFT HAVING A RADIUS OF 600.00 FEET, A CENTRAL ANGLE OF 09433'41" AND A CHORD WHICH BEARS N. 89453'18' E. 100.01 FEET; THEN N. 85406'28" E. 50.78 FEET; THEN S. 86233'12" E. 48.76 FEET; THEN S. 84438'31" E. 90.46 FEET; THEN 124.16 FEET ALONG THE ARC OF A CURVE TO THE LEFT HAVING A RADIUS OF 161.89 FEET, A CENTRAL ANGLE OF 43456'39" AND A CHORD WHICH BEARS N. 73423'09" E. 121.14 FEET; THEN N. 51424'50" E. 131.89 FEET; THEN 276.29 FEET ALONG THE ARC OF A CURVE TO THE RIGHT HAVING A RADIUS OF 1109.00 FEET, A CENTRAL ANGLE OF 14416'27" AND A CHORD WHICH BEARS N. 58433'04" E. 275.57 FEET; THEN N. 65441'17" E. 255.46 FEET TO THE EAST LINE OF SAID SWY SW1/4; THEN N. 00213'24" W. ALONG SAID EAST LINE 875.01 FEET TO THE NORTHEAST CORNER OF SAID SW1/4 SW1/4; THEN N. 00413'24" W. ALONG THE EAST LINE OF SAID NW'/4 SW1/4 488.85 FEET; THEN DEPARTING SAID EAST LINE N. 84220'59" W. 898.29 FEET TO THE POINT OF BEGINNING. SAID TRACT OF LAND CONTAINS 35.07 ACRES AS DESCRIBED. 1 11 1111 11111 111111 11111 1111 111111 111111 111 11111 1111 1111 511059 07/17/1997 09:06A 81028 P382 432 5 of 7 R 36.00 D 10.00 N 0.00 GARFIELD CLERK EXHIBIT D A TRACT OF LAND SITUATED IN THE NW'/a SW1/4 AND THE SW1/4 NWY OF SECTION 27, TOWNSHIP 5 SOUTH, RANGE 92 WEST OF THE 6TH P.M., COUNTY OF GARFIELD, STATE OF COLORADO, SAID TRACT OF LAND BEING MORE PARTICULARLY DESCRIBED AS FOLLOWS: (ALL BEARINGS IN THIS DESCRIPTION ARE RELATIVE TO THE WEST LINE OF THE SW1/4 OF SAID SECTION 27 AS BEARING N. 00212'00" W.) BEGINNING AT THE NORTHEAST CORNER OF SAID SW1/4 NW'/4, SAID NORTHEAST CORNER BEING A #5 REBAR AND ALUMINUM CAP, P.L.S. #27613; THEN N. 84207'32:1W. ALONG THE NORTH LINE OF SMD SW1/4 NW'/4 707.33 FEET; THEN DEPARTING SAID NORTH LINE S. 00400'00" E. 1306.98 FEET; THEN S. 12438'49" W. 827.09 FEET; THEN S. 84420'59" E. 828.29 FEET TO THE EAST LINE OF SAID NW1/4 SW1/4; THEN N. 00413'24" W. ALONG SAID EAST LINE 825.26 FEET TO THE NORTHEAST CORNER OF SAID NW1/4 SW1/4; THEN N. 00415'51" W. ALONG THE EAST LINE OF SAID SW1/4 NW'/4 1304.81 FEET TO THE POINT OF BEGINNING. SAID TRACT OF LAND CONTAINS 36.36 ACRES AS DESCRIBED. 111111II111IIIIIIVIIIEllin 111111111nil 11111111 611059 07/17/1997 091068 61026 P383 432 6 of 7 R 36.00 D 10.00 N 0.00 GARFIELD CLERK EXHIBIT E A TRACT OF LAND SITUATED IN THE E1/2 NE'/4 NE'/4 OF SECTION 28, THE NW% NW1/4 AND THE SW1/4 NW'/4 AND THE NW1/4 SWI/4 OF SECTION 27, THE E1/2 SE1/4 SE1/4 OF SECTION 21 AND THE SW1/4 SW'/4 OF SECTION 22, TOWNSHIP 5 SOUTH, RANGE 92 WEST OF THE 6TH P.M., COUNTY OF GARFIELD, STATE OF COLORADO, SAID TRACT OF LAND BEING MORE PARTICULARLY DESCRIBED AS FOLLOWS: (ALL BEARINGS IN THIS DESCRIPTION ARE RELATIVE TO THE WEST LINE OF THE SW'/4 OF SAID SECTION 27 AS BEARING N. 00412'00" W.) BEGINNING AT THE WEST 1/4 CORNER OF SAID SECTION 27, SAID WEST 1/4 CORNER BEING A BLM STANDARD MONUMENT; THEN S. 00412'00" E. ALONG THE WEST LINE OF SAID NW1/4 SW1/4 825.23 FEET; THEN DEPARTING SAID WEST LINE S. 84420'59" E. 443.78 FEET; THEN N. 12238'49" E. 827.09 FEET; THEN N. 00400'00" W. 1306.98 FEET TO THE NORTH LINE OF SAID SW1/4 NW'/4; THEN S. 84407'32" E. ALONG SAID NORTH LINE 707.33 FEET TO THE NORTHEAST CORNER OF SAID SW'/4 NW1/4; THEN N. 00415'31" W. ALONG THE EAST LINE OF SAID NW1/4 NW1/4 1304.58 FEET TO THE NORTHEAST CORNER OF SAID NW'/4 NW'/4; THEN N. 00414'34" W. ALONG THE EAST LINE OF SAID SW'/4 SW1/4 1313.90 FEET TO THE NORTHEAST CORNER OF SAID SW'/2 SW'/4; THEN N. 83437'05" W. ALONG THE NORTH LINE OF SAID SW1/4 SW'/4 1349.25 FEET TO THE NORTHEAST CORNER OF SAID E'/2 SE'/4 SE'/4; THEN S. 87214'14" W. ALONG THE NORTH LINE OF SAID E1/2 SE1/4 SE'/4 656.82 FEET TO THE NORTHWEST CORNER OF SAID E1/2 SE1/4 SE'/4; THEN S. 00423'28" E. ALONG THE WEST LINE OF SAID E'/2 SE'/4 SE1/4 1292.68 FEET TO THE SOUTHWEST CORNER OF SAID E' SE'/4 SE1/4; THEN S. 00413'11" E. ALONG THE WEST LINE OF SAID E'/2 NE'/4 NE1/4 1340.09 FEET TO THE SOUTHWEST CORNER OF SAID E'/2 NE'/4 NE1/4; THEN ALONG THE SOUTH LINE OF SAID E'/2 NE'/4 NE'/4 N. 87206'22" E. 660.42 FEET TO THE SOUTHEAST CORNER OF SAID E'/2 NE1/4 NE'/2; THEN S. 00415'12" E. ALONG THE WEST LINE OF SAID SW'/4 NW'/4 1310.06 FEET TO THE POINT OF BEGINNING. SAID TRACT OF LAND CONTAINS 149.24 ACRES, AS DESCRIBED. \1111111$ 1111 111 t11 I I6 1\1111111111111111 511059 07/17/1997 09 CLERK 7 of 7 R 36.00 D 10.00 N 0.00 GARFIELD TIUS DEED, Made this 1 II ILII 11111 111111 111 1111(11111111111111111111111111111 522379 R311.00998 1101A D1059 D 0100 GARFIELD PCOUNTY 311 M ACOOORF QUIT CLAIM DEED day of , between Kenneth L. Elder and Janey Ruth Elder, aka J. Ruth Elder, aka Ruth Elder grantnr. and ofthe said countyor Garfield and State of Colorado James R. Hubbard and Terri Patrick, Tenants in Common whose legal address is P.O. Box 561, Rifle, CO. , 81650 ofthe said Countyof Garfield WITNESS, that the grantor, for and in consideration of the aunt of Tea dollars and other good and valuable consideration DOLLARS, the receipt and sufficiency of which is hereby acknowledged, has remised, released, sold, conveyed, and QUIT CLAIMED, and by thcsc presenu, do remise, release, sell, convey and Quit Claim unto the grantee, his hairs, successors and assigns, forever, all the right, title, interest, claim end de and which the grantor has f in and to the real property, tog:ther with improvements, if any, situate, lying and being in the and State of Colorado described u follows: Correction Deed SeL two -Teti Exhibit` "A" This deed is given to correct that property description as described in Exhibit A of that certain warranty deed as recorded in Book 1026 at Pages 378 - 384 under Reception number 511059 of the records of the Clerk and Recorder of Garfield County, Colorado. and State of Colorado ,granw;: u known by street and eumter u: TO IDAVE AND TO SOLD the same, together with all and singular the appurtenances and privileges thereunto belonging or in any- wise thereunto appertaining, and all the estate, right, title, interest and claim whatsoever, of the grantor, either in law or equity, to the only proper use, benefit and'tehoof of the grantee, his heirs and assigns forever. The singular number shall include the plural, the plural and the singular, and the uaa of any gender shall be applicable to all genders. IN W1TNE$8 WIIEREOF, the grantor has executed this deed on the date sot forth above. /Th 1 �:iLL Of State of ) )ar. County of2�¢u�1J1�i ) The foregoing instrument as acknowledged before me this by My commission expires (Q lQg 1) c ),. 0/ n day of Witness my hand and official seal. Notary -Public Fits IVa. No. )77 QVR' CLAM DEED an. )n7 SurvCo, Inc. Professional Land Surveying Services 1111111111111111111111111111111111111 III 11111 11111111 522379 03/25/1998 11:018 81059 P312 M RLSDORF 2 of 2 R 11.00 D 0.00 GARFIELD COUNTY CO Exhibit A PROPERTY DESCRIPTION "TRACT 1" A TRACT OF LAND SITUATED IN THE NE1/4SE1/4 AND THE SE1/48E1/4 OF SECTION 28, THE NW1/4SW1/4 AND THE SW1/4SW1/4 OF SECTION 27 AND THE NW1/4NW1/4 OF SECTION 34, TOWNSHIP 5 SOUTH, RANGE 92 WEST OF THE 6TH P.M., COUNTY OF GARFIELD, STATE OF COLORADO, SAID TRACT OF LAND BEING MORE PARTICULARLY DESCRIBED AS FOLLOWS: (ALL BEARINGS IN THIS DESCRIPTION ARE RELATIVE TO THE WEST LINE OF THE SW1/4 OF SAID SECTION 27 AS BEARING N.00'12'00"W.) BEGINNING AT THE SOUTHWEST CORNER OF SAID SECTION 27, SAID SOUTHWEST CORNER BEING A BRASS CAP AND STANDARD MONUMENT P.L.S. #10732; THEN S.00°05'33"E. ALONG THE WEST LINE OF SAID NW1/4NW1/4 OF SAID SECTION 34 A DISTANCE OF 69.92 FEET; THEN DEPARTING SAID WEST LINE 119.59 FEET ALONG THE ARC OF A NON -TANGENT CURVE TO THE RIGHT HAVING A RADIUS OF 66.79 FEET, A CENTRAL ANGLE OF 102'35'11" AND A CHORD WHICH BEARS N.51'04'22"E. 104.24 FEET; THEN 5.77'37'58"E. 20.94 FEET; THEN 107.49 PEET ALONG THE ARC OF A CURVE TO THE LEFT HAVING A RADIUS OF 800.00 FEET, A CENTRAL ANGLE OF 07'41'54" AND A CHORD WHICH BEARS 5.81'28'55"E. 107.41 FEET; THEN S.85'19'52"E. 150.72 FEET; THEN N.02'44'07"E. 906.33 FEET; THEN N.02'08'39"E. 906,62 FEET; THEN N.84'20'59"W. 443.78 PEET; THEN S.81°10'08"W. 582.74 FEET; THEN S.01'06'08"E. 443.92 FEET; THEN 5.06'15'25"E. 760.77 FEET; THEN 35.11 PEET ALONG THE ARC OF A CURVE TO THE LEFT HAVING A RADIUS OF 160.00 FEET, A CENTRAL ANGLE OF 12'34'23" AND A CHORD WHICH BEARS S./2'32'39"E. 35.04 PEET; THEN 5.18'49'52"E, 203.24 FEET; THEN 94.65 PEET ALONG THE ARC OF A CURVE TO THE LEFT HAVING A RADIUS OF 400.00 FEET, A CENTRAL ANGLE OF 13'33'28" AND -A CHORD -WHICH BEARS -S -.25'36'37"B. 94,43-F3RT-; THEN -S..51°2 -2-'1.2"E, 2 -36 -.68 -FEET; THEN- S.64'02'26"E. 187.83 FEET TO THE EAST LINE OF SAID SE1/4SE1/4; THEN ALONG SAID EAST LINE 5.00'12'00"E. 21.00 FEET TO THE POINT OF BEGINNING. SAID TRACT OF LAND CONTAINS 36.44 ACRES AS DESCRIBED. 12/FEB/1997 96045T1.DOC corrected 17/feb/1998 1001 Grand Avenue, Ste. 205 • Glenwood Springs, CO 81601 PH: (970) 928-8233 FAX: (970) 928-8840 Rana Reap 1111111 11111 111111 1111 11111 1111111 1111 Ill 11111 1111 1111 530523 08/14/1998 10:18A B1083 P499 M ALSDORF 1 of 2 R 11.00 D 0.00 GARFIELD COUNTY CO Recorder QUITCLAIM DEED THIS DEED, made this 7TH day of AUGUST .19 98 betweriJAMES R. HUBBARD County of GARFIELD grantor(s), end TERR! PATRICK whose legal address is / = 1 1 of tho County of GARFIELD and Stade of COLORADO , grantee(s): WITNESS, that the grantor(s), for and in cohsidenuion of the sum of TEN DOLLARS AND OTHER GOOD AND VALUABLE CONSIDERATION Dollars. the receipt and sufficiency of which is hereby acknowledged, has remised, released, sold and QUITCLAIMED, and by these presents does remise, release, sell and QUITCLAIM unto the grantee(s), her heirs, successors and assigns forever, ell the right, title, interest, claim and demand which the grantors) has in and to the real property, together with improvemerds, if any, situate, lying and being in the County of GARFIELD and State of Colorado, described as follows: of the land State of COLORADO SEE EXHIBIT "A" ATTACHED HERETO AND MADE A PART HEREOF also known by street and number as: assessor's schedule or parcel number: TO HAVE AND TO HOLD the same. together with all and singular the appurtenances and privileges thereunto belonging, or in anywise thcreunfo appertaining, and all the estate, right, title, interest and claim whatsoever of the grantor(s), either io law or equity, to the only proper use, bit and behoof of the grantee(s) her heirs and assigns forever. IN WITNESS WHEREOF, the grantor(s) hits executed this deed on the date set forth above. '' JAMES R. HUBBARD STATE OF COLORADO County of GARFIELD The foregoing instrument was acknowledged before mo this by JAMES R. HUBBARD LU. No. 933. Rev. 4-94. QUITCLAIM DSED ) 7TH day of AUGUST .19 98 , I1-11'3 Witness my hand and official seaL My commission expires: 09-27-01 127 E. 5TH ST„ RIFL , CO 81 Notary public Name and Address of Pusan Creating Newly Genial Legal Dcseripaan (438&35.10e3, C.R.S.) tuLa t C : -- o--11:Vo CC S skadFomvc' Software • Computer Genermed Fame for Crnmnmwealth Tide Company Bradford Publishing 1743 Wane St, Denver, CO 10202 - (303) 292.2300 r! EXHIBIT "A" A tract of land situated in the NE1/4SE1/4 and SE1/4SE1/4 of Section 28, the NW1/4SW1/4 and SW1/4SW1/4 of Section 27 and the NW1/4NW1/4 of Section 34, Township 5 South, Range 92 West of the 6th P.M., County of Garfield, state of Colorado, said tract of land being more particularly described as follows: (A11 bearings in this description are relative to the West line of the SW1/4 of said Section 27 as Bearing North 00°12'00" West) Beginning at the Southwest Corner of said Section 27, said Southwest Corner being a brass cap and standard monument P.L.S. #10732; then South 00°05'33" East along the West line of said NW1/4NW1/4 of said Section 34 a distance of 69.92 feet; then departing said West line 119.59 feet along the arc of a non -tangent curve to the right having a radius of 66.79 feet, a central angle of 102°35'11" and a chord which bears North 51°04'22" East 104.24 feet; then South 77°37'58" East 20.94 feet; then 107.49 feet along the arc of a curve to the left having a radius of 800.00 feet, a central angle of 07°41'54" and a_ chord- which hears- Seth 8192.8-'5.5-" FaGt 1117-41 feet;_ than South 85°19'52" East 150.72 feet; then North 02°44'07" East 906.33 feet; then North 02°08'39" East 906.62 feet; then North 84°20'59" West 443.78 feet; then South 81°10'08" West 582.74 feet, then South 01°06'08" East 443.92 feet; then South 06°15'25" East 760.77 feet; thn a curve to he ofe160.001feet, al central angle fof 12°34'23" tand lafchord t lradiusng a feet which bears South 12°32'39" East 35.04 feet; then South 18°49'52" East 203.24 feet; then 94.65 feet along the arc of curve to the left having a radius of 400.00 feet, a central angle of 13°33'28" and a chord which bears South 25°36'37" East 94.43 feet; then South 61°22'12" East 236.68 feet; then South 64°02'26" East 187.83 feet to the East Line of Said SE1/4SE1/4; then along said East line South 00°12'00" East 21.00 feet to the POINT OF BEGINNING. 1 111111 11111111111 1111 11111 1111111 11111 111 1111111111111 530523 08/14/1998 10 ISA 81083 P500 M PLSDORF 2 of 2 R 11.00 0 0.00 GARFIELD COUNTY CO WATER SUPPLY PLAN P.O. Box 1908 1005 Cooper Ave. Glenwood Springs, CO 81602 /\<\. l ZANC4NELL4 4140 455O04TE5, INC. ENGINEERING CONSULT414T5 February 24, 2004 Mr. Mark Bean Garfield County Planning Department 108 Eighth Street, Suite 201 Glenwood Springs, CO 81601 RE: Silt Heights Subdivision Dear Mark: (970) 945-5700 (970) 945-1253 Fax This report presents the findings of the water supply investigations performed by Zancanella and Associates, Inc. for the proposed Silt Heights Subdivision. Information contained in this report covers estimated future domestic water uses, the West Divide Water Conservancy District contract, well pump test, and water quality analysis. Water Requirements Table 1, attached, presents the diversions and consumptive use for the proposed Silt Heights Subdivision. The new subdivision will consist of 5 lots with 3 ADUs for at total of 8 units. We have assumed that each EQR will represent 3.5 people using 100 gallons of water per person per day. Water will be diverted to irrigate up to 2500 square feet of lawn or other equivalent outside uses at each residence and each ADU. Each lot is to be served by a separate individual well. Legal Supply As can be seen from Table 1, the subdivision will divert an average 4.75 AF annually, and consumptively use 1.55 AF, with transit losses included. The peak month of June would require a continuous average diversion of 4.9 gpm. The subdivision is located within Area A of the West Divide District Water Conservancy District and is eligible for the West Divide District temporary exchange plan approved by Garfield County and the Colorado Division of Water Resources. A contract from the West Divide District for 1.55 acre feet, which includes transit losses, has been obtained. A copy of the contract, #020328SHS(a), is attached. The Silt Heights Well was drilled under permit number 210911-A (copy attached). This is an exempt domestic permit, intended to serve a maximum of three residences and to be the only well on the 36.44 acre tract. All wells serving the subdivision will need to be permitted as a fee wells prior to use by the subdivision. Physical Supply The Silt Heights Well was completed on April 10, 2003 by Shelton Drilling Corporation at a total depth of 85 feet. The well is located in the NE 1/4 of the SE 1/4 of Section 28, Township 5 South, Range 92 West of the 6th P.M. The location of the well, taken from the well permit, can be plotted 1380 feet from the south section line and 235 feet from the east section line. The approximate location of the well and the Silt Heights Subdivision boundary are shown on the attached general location map, Figure 1. The well was drilled entirely within the Tertiary Wasatch Formation and its weathered remnants. A copy of the well construction report and a graphical representation of the well (Figure 2) are attached. A 4.5 hour pump test of the Silt Heights Well was conducted on April 14, 2003 by Samuelson Pump Company utilizing the electric submersible pump. The pump test was performed at an initial rate of 1.7 gallons per minute (gpm). The rate was increased to 5 gpm at 50 minutes into the test, and then to 7.5 gpm at 90 minutes from the commencement of pumping. The rate was then held at the 7.5 gpm rate throughout the remainder of the test, except for the last 20 minutes of the test, when it was lowered to 6.7 gpm. The well was pumped continuously for a 4 hour and 30 minute period at these varying rates. The drawdown and time data collected during the test are presented in Table 2. We have plotted the results of the test in a water level vs. time curve as shown on the attached Figure 3. The maximum drawdown during the 4.5 -hour test was approximately 6.8 feet. The water level showed continuous drawdown with time. Recovery data for the well following the pump test were collected for a 60 minute period after the pumping stopped. The recovery data are listed in the lower portion of Table 2. The recovery plotted as residual drawdown is shown in Figure 4. Based on the residual drawdown curve, the well displayed normal recovery characteristics. The test indicates that the well will probably be able to operate for extended periods at a rate of approximately 5 gpm. This amount, with water storage to handle peak demands, should be adequate to serve one lot. It may be necessary to limit irrigation withdrawals during extended drought periods. We would suggest that an alternate outside irrigation source be developed. Water Quality Water samples were collected during the pump test and sent to Grand Junction Laboratories for independent analyses. The lab tests included analyses for various inorganic chemicals, nitrate/nitrite, total dissolved solids (TDS) and some of the physical properties of the water. A total coliform bacteria sample was collected and sent to the Snowmass Water and Sanitation lab for analysis. The results of the analyses are attached. The coliform bacteria test indicates that coliform bacteria were absent from the sample. Results of the analyses from Grand Junction Labs indicate that the water is above the Maximum Contaminant Level for selenium and turbidity. The water is also above the recommended levels (EPA's National Secondary Drinking Water Regulations) for sodium, chloride, sulfate, total dissolved solids, iron and fluoride. Treatment of the water will be necessary prior to human consumption. 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Water treatment to remove these types of contaminants will likely be accomplished by a 1 Reverse Osmosis (RO) system. If this is the case, RO is approximately 50 percent efficient, which means that as much as half of the water produced isused to flush RO membrane. The result is that the RO treatment process will place additional demands on the well and on septic systems. Septic system design will need to take into account the additional backwash flows or the backwash flows may be evaluated to use for irrigation purposes. If you have any questions, please call our office at (970) 945-5700. Very truly yours, Zancanella and Associates, Inc. Thomas A. Zancanella, P.E. Bradley C. P Attachments k, Geologist cc: Dan Dennison, High Country Engineering Terri Patrick Z:121000\21836 Silt Heights\Bean-WaterSupply.doc 3 M 11111 11111 E r OM NM EN M NM 11111 MN I M 1 M I MN Month it of Residences it persons/residence if gallons/person/day Percent Consumed Lawn Irrigation Application Efficiency Crop Irrig regmnt (CIR) January February March April May June July August September October Ncrember December Annual losvmhei 20. 2000 :ancanella & AssoC.. Inc Vale( Rosnwces E(IgklccIs ile lNoou Spn.,es. CO 10141 21830 .vloSe 123 (1) Domestic In-house (ac -t) 0.27 0.24 0.27 0.26 0.27 0.26 0.27 0.27 0.26 0.27 0.26 0.27 (2) Commercial In-house lac -ft) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 8.0 3.5 100 10% 2500 sq-fUlot 70% 2.17 ft� units cap/unit gpcd I480!(ofl RpgiiUonsonta (3) (4) .. DomlComm Irrigation (ac -ft) 0.00 0.00 0.00 0.04 0.32 0.39 0.37 0.26 0.21 0.01 0.00 0.00 Pond Evap. (ac -ft) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3.17 0.00 1.60 0.00 Table 1 Silt Heights Subdivision 4 Lots, 4 ADUs Estimated Water Requirements Water Use Inputs Cosnns cIal gonptnd¢ _ # of Commercial Units 0.0 # persons/unit it gallons/person/clay Percent Consumed Lawn Irrigation Application Efficiency Crop Irrig regmnl (CIR) (5) Livo• stock (ac -I1) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.0 100 gpcd 10% 0 sq-ft/unit 70% 2.17 (t Water Use Calculations (8) Total (acdt) 0.27 0.24 0.27 0.30 0.58 0.65 0.63 0.53 0.47 0.28 0.26 0.27 (7) Average Flow WPM) 1.9 1.9 1.9 2.3 4.3 4.9 4.6 3.9 3.6 2.0 1.9 1.9 0.00 4.75 2.93 (e) Domestic In-house (ac -It) 0.03 0.02 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 . _. A7l(ter Dery3andc. , ... Pond Surface Area 0 acres Annual Net Evaporation 2.74 0 Livestock 0 units Livestock Consumption 15 gpud Irrigated Open Space 0 acres Application Efficiency 70% Crop Irrig reqmnt (CIR) 2.17 fl (e) Commercial Inhouse (ac -ft( 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.35 0.00 ..::.... .Ud6 (10) ........(11) DomlComm Pond Irrigation Evap. (ac -ft) (ac -II) 0.00 0.00 0.00 0.03 0.22 0.27 0.26 0.18 0.15 0.01 0.00 0.00 1.12 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 (12) Live• stock (ac -ft) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 (13) Total (ac -ft) 0.03 0.02 0.03 0.06 0.25 0.30 0.28 0.21 0.18 0.04 0.03 0.03 (14) With Transit Loss (ac -el) 0.03 0.02 0.03 0.07 0.26 0.32 0.30 0.22 0.19 0.05 0.03 0.03 _1.46:. - _:1.55 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 R92W 1 0 , 00 Scale in Feet T5S PROJECT LOCATION MAP SCALE 2000' DATE: FEB. 23, 2004 SHEET: 1 OF 1 DRAWN BY: BCP CHKD BY: BCP APPO BY: TAZ DRANING: LocTopo.dwg SILT HEIGHTS SUBDIVISION ZANCANELLA AND ASSOC/A7c S, INC ENGINEER/NG DONSUL TANTS' POST aFncE BOOL 1006 - 1005 COOPER AVENUE a DIBOW SPRINGS. =DRAW 61602 (970) 946-5700 FIGURE NO. 1 PROJECT: 21836 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 GROUND LEVEL 0 % • :,• A 0' TO 85' 10- 6.5' HOLE DIAMETER Soil, Silt & Clay 20- 30- 40- - CEMENT 10'-40' _, STATIC WATER LEVEL 45.3' -Nis-- ON APRIL 14, 2003 50- +1' TO 57' 5.5' PLAIN STEEL CSG 0.188 WALL THICKNESS ' 1 57' TO 62' - Cobbles, Gravel 60- 5.5' STEEL PERF CSG 0,188 WALL THICKNESS Clay, Silt 70 - 62' TO 85' 5.5' PLAIN STEEL CSG 80 - 0.188 WALL THICKNESS Tertiary Wasatch Formation _ TOTAL DEPTH 85' SILT HEIGHTS WELL WELL DETAIL SCALE: NOT TO SCALE DRAWN 8Y: BCP DATE SHEET FEBRUARY 23, 2004 1 OF 1 CHAD BY: BCP APPD BY: TAZ PLAN NO. WdlDetaLdrg SILT HEIGHTS SUBDIVISION i-\<\ ZANCANELLA AND ASSOCIATES, INC. EN6INEE/'IN6 CONSUL TANTS POST OFFICE BOX 1906 - 1005 COOPER AVENUE O EK*OCO SPRINGS COl0f1AD0 91602 (970) 945-5700 FIGURE NO. 2 PRO ECT: 21836 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 TABLE 2 Pump Test Data Well ID: Silt Heights Well Job No.: 21836 Client: Terri Patrick Test By: Samuelson Analysis By: BCP M.P. = Top of Casing Q= S.W.L. = b= Time/Date on: Time/Date off: Test Length: 7 gpm ft 45.3 ft 4/14/03 10:50 AM 4/14/03 3:20 PM 4:30:00 ft total time TIME Time (minutes) W.L. Measurement Drawdown (feet) Q (gpm) t' (minutes) t/t' (feet) (inches) 4/14/03 10:50 AM 0 45 3.25 SWL 1.7 4/14/03 10:51 AM 1 46 1 0.81 1.7 4/14/03 10:52 AM 2 45 5 0.15 1.7 4/14/03 10:56 AM 6 46 3.5 1.02 1.7 4/14/03 10:58 AM 8 46 3.25 1.00 1.7 4/14/03 11:00 AM 10 46 3.25 1.00 1.7 4/14/03 11:02 AM 12. 46 5.25 1.17 1.7 4/14/03 11:05 AM 15 46 4.25 1.08 1.7 4/14/03 11:10 AM 20 46 3.5 1.02 1.7 4/14/03 11:20 AM 30 46 3.25 1.00 1.7 4/14/03 11:30 AM 40 46 0 0.73 1.7 4/14/03 11:40 AM 50 48 1.75 2.88 5 4/14/03 11:50 AM 60 48 5 3.15 5 4/14/03 12:20 PM 90 48 2 2.90 7.5 4/14/03 12:30 PM 100 49 3.5 4.02 7.5 4/14/03 12:40 PM 110 50 10.5 5.60 7.5 4/14/03 12:50 PM 120 51 0.5 5.77 7.5 4/14/03 1:20 PM 150 51 4 6.06 7.5 4/14/03 1:50 PM 180 51 6.5 6.27 7.5 4/14/03 2:20 PM 210 51 10.25 6.58 7.5 4/14/03 2:50 PM 240 52 1 6.81 7.5 4/14/03 3:00 PM 250 51 6 6.23 6.7 4/14/03 3:10 PM 260 51 6.5 6.27 6.7 4/14/03 3:20 PM 270 51 7 6.31 6.7 4/14/03 3:21 PM 271 47 10 2.56 Stopped Pumping 1 271 4/14/03 3:22 PM 272 46 10.25 1.58 2 136 4/14/03 3:23 PM 273 46 5.75 1.21 3 91 4/14/03 3:24 PM 274 46 5 1.15 4 69 4/14/03 3:26 PM 276 46 3 0.98 6 46 4/14/03 3:28 PM 278 46 0.75 0.79 8 35 4/14/03 3:31 PM 281 45 11.5 0.69 11 26 4/14/03 3:33 PM 283 45 11 0.65 13 22 4/14/03 3:35 PM 285 45 10.5 0.60 15 19 4/14/03 3:40 PM 290 45 9.5 0.52 20 15 4/14/03 3:50 PM 300 45 8.25 0.42 30 10 4/14/03 4:00 PM 310 45 6.5 0.27 40 8 4/14/03 4:10 PM 320 45 6.5 0.27 50 6 4/14/03 4:20 PM 330 45 6.5 0.27 60 6 2/23/2004 Zancanella & Associates, Inc. Pump Test 14Apr03.xls ■■ N MN MN R 111110 M r M N M— 111 M N— NM 1 E 0 10 20 30 E O > 40 d J 0) 50 60 70 80 1 10 Figure 3 Pumping Test - 4/14/03 Silt Heights Well 100 Time (min) 1,o00 10,000 100,000 90-250 min. Q = 7.5 250-270 min. Q = 6.7 Static Water Level = 45.3 ft Pump Set at 80 ft. Total Depth = 85ft. 2/20/2004 Zancanella & Associates. Inc. Pump Test 14Apr03.xls 1 INN— — EN I• MS I N E MN I I• M IMM INN 2/20/2004 Zancanella & Associates, Inc. Pump Test 14Apr03.xls 1 10 Recovery Following Recovery 100 Figure 4 4.5 Hour Pumping Test - 4/14/03 Silt Heights Well as Residual Drawdown tit' 1,000 10,000 100,000 1 2 'sill 0 o J 3 \ m v ii u) 4 E 0 L LL 5 4.. o co LL 6 C o v CU L 6 8 9 10 2/20/2004 Zancanella & Associates, Inc. Pump Test 14Apr03.xls Form No. GWS -25 APPLICANT OFFICE OF THE STATE ENGINEER COLORADO DIVISION OF WATER RESOURCES 818 Centennial Bldg., 1313 Sherman St., Denver, Colorado 80203 (303) 866-3581 TERRI PATRICK 1175 COUNTY ROAD 259 RIFLE, CO 81650- (970) 625-2834 PERMIT TO CONSTRUCT A WELL 1382 WELL PERMIT NUMBER 210911 A DIV. 5 WD 39 DES. BASIN MD APPROVED WELL LOCATION GARFIELD COUNTY NE 1/4 SE 1/4 Section 28 Township 5 S Range 92 W Sixth P.M. DISTANCES FROM SECTION LINES 1380 Ft. from South Section Line 235 Ft. from East Section Line UTM COORDINATES Northing: Easting: ISSUANCE OF THIS PERMIT DOES NOT CONFER A WATER RIGHT CONDITIONS OF APPROVAL 1) This well shall be used in such a way as to cause no material injury to existing water rights. The issuance of this permit does not assure the applicant that no injury will occur to another vested water right or preclude another owner of a vested water right from seeking relief in a civil court action. 2) The construction of this well shall be in compliance with the Water Well Construction Rules 2 CCR 402-2, unless approval of a variance has been granted by the State Board of Examiners of Water Well Construction and Pump Installation Contractors in accordance with Rule 18. 3) Approved pursuant to CRS 37-92-602(3)(c) for the relocation of an existing well, permit no. 210911. The old well must be plugged in accordance with Rule 16 of the Water Well Construction Rules within ninety (90) days of completion of the new well. The enclosed Well Abandonment Report form must be completed and submitted to affirm that the old well was plugged. 4) Approved as the only well on a tract of land of 36.44 acres described as that portion of the NE 1/4 of the SE 1/4, Sec. 28, Twp. 5 South, Rng. 92 West, 6th P.M., Garfield County, more particularly described on the attached exhibit A. Further identified as 1175 County Road 259, Rifle, CO 81650. 5) The use of ground water from this well is limited to fire protection, ordinary household purposes inside not more than three (3) single family dwellings, the irrigation of not more than one (1) acre of home gardens and lawns, and the watering of domestic animals. 6) The maximum pumping rate of this well shall not exceed 15 GPM. 7) The return flow from the use of this well must be through an individual waste water disposal system of the non -evaporative type where the water is retumed to the same stream system in which the well is located. 8) This well shall be constructed not more than 200 feet from the location specified on this permit. NOTE: Parcel Identification Number (PIN): 23-2127-284-00-286 j2 ---2+-k_ NOTE: Assessor Tax Schedule Number: R211013 o 2 .-9r2-473 } APPROVED DMW ,Receipt No. 9501393 State Engineer DATE ISSUED 02-19-2003 By EXPIRATION DATE 02-19-2005 , 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 IIVuy, f Our UQI y LV, LVV`/ J,V'r r ri vv Qyrier JrwRVll a !V-aL/-JOUI p.ul WELL CONSTRUCTION AND TEST REPORT STATE OF COLORADO, OFFICE OF THE STATE ENGINEER FOR OrrmCBUSE ONLY 1. WELL PERMIT NUMBER 210911-A 2 Owner Name(s): Terri Patrick Mailing Address: 1175 County Road 259 City, State, Zip : Rifle, Co. 81650 Phone # : 970-625-2534 APPROVAL # OWS31-91-03 WELL LOCATION AS DRILLED 3 NE 1/4 SE 1/4 Sec: 28 Twp: 5 S Range: 92 W DISTANCES FROM SEC. LINES 1430 ft. from South Sec. line and 360 ft. from East Sec. line OR Northing: Easting: SUBDIVISION: LOT: BLOCK: FILING (UNIT): STREET ADDRESS AT LOCATION 4 GROUND SURFACE ELEVATION ft. DRILLING METHOD Air Rotary DATE COMPLETED: 4/10/2003 TOTAL DEPTH: 85 DEPTH COMPLETION: 85 5. GEOLOGIC LOG 6. HOLE DIAMETER (in) FROM (ft) TO (8) Depth Type of Material (Size, Color, and Type) 6.5 0 85 000-057 Dirt, Silts, Clays 85 057-062 Cobbles, Gravels 062-082 Clays, Silts 7. PLAIN CASING 082-085 Wasatch Formation OD (in) Kind Wall Size riom (ft) To (ft) 5.5 Steel 0.188 -1 57 5.5 Steel 0.188 62 85 PERP. CASINO : Screen Slot Size 5.5 Steel 0.188 57 62 Water Located: 57-62 Remarks : 8. Filter Pack Material : Size : Interval : 9. Packer Placement Type: Depth : 10. GROUTING RECORD Material Atnount Density Interval Placement Cement 5 sks 6 gal/sk 10-40 poured 11. DISINFECTION : Type : IITH Amt. Used : 2 oz. 12. WELL TEST DATA : () Check Box If Test Data Is Submitted On Supplemental TESTING METHOD : Air Compressor Static Level : 42 ft. Date/Time Measured 4/10/2003 Production Rate 7.5 gprn Pumping Level : Total ft. Date/Time Measured 4/10/2003 Test Length : 2 hours Test Remarks : 13. I have Te]d the r.ta ,aria inoade haw end kno' rhe mcanb theme an that they era was to my bnoetlodge. (Furrow to Section 24.4.14 (13Xe) CRS, the malting of false statement. ooesotmes o jrny in rhe second degree v'd is Ptmishable as a clue 1 mesa.) CONTRACTOR : Shelton Drilling Corp. Phone : (970) 927.4182 Mailing Address : P.O. Box 1059 Basalt, Co. 81621 Lic. No. 1095 Name / Title (Please Type or Print) Wayne Shelton / President Signature Date 4/11/2003 c Q PublicHdd and Emu 01.23 SAMPLE INFORMATION: 0 COMMUNITY 0 NON -COMMUNITY 1ZFPRIVATE 0 ROUTINE RAW ❑ REPEAT FOR THE MONTH OF SPECIAL PURPOSE 0 FINISHED iccoms7 t)lc} - Sam, LABORATORY & RADIATION SERVICES 8100 LOWRY BOULEVARD DENVER, CO 80230-6928 US MAIL PO BOX 17123 DENVER. CO 80217 WATER BACTERIOLOGY cobjevi PWS ID NAME -OF SYSTEM ADDCCR'ESS /k! u MG/L c /L/ CITY CHLORINE R 5IDUAL COUNTY ORDERED BY: (SAMPLE MAY NOT BE TESTED IF ALL NFORMATION I NOT PROVIDED) ( )q FEE STAMPA� �►Ylr LAB 106 (07/97), PHONE NAME , X17516 (T1,'/ ADDB.ESS 421-�VIAELoD �/ ,/) 4.75, C '/G / CITY / STATE / ZIP TEST ORDERED STD BACT ❑ OTHER DATE TIME BY %/;3/a�3 / � ❑ COLLECTED �yPM �7 AM RECEIVED /d X/O 3 M1y '�l.��.en PM RESULTS: SEE REVERSE FOR EXPLANATION TOTAL COLIFORM ❑ PRESENTABSENT MOST PROBABLE NO COLIFORM/100ML (.00 kSV(4 ❑ DENVER ❑ DURANGO ❑ GF ANALYST Received from: Lab number N� Sample ID 1 JOHN C. KEPHART & CO. JNCI- \ LA RAT — ANALYTICAL REPORT — Zancanella & Assoc. PO Dox 1908 Glenwood Springs, CO 81602 970-945-5700, FAx 945-1253 2054 water Laboratory No. Sample Customer No. 4/24/03 • 6/5/03 oa�ms�voa Date Reported 2054 Limits for Drinking Supplies Set Terri 'Patrick 4/23 3PM by Colo' Dept. Health Garfield Cty, by Mike, CR 259 at wellhead Arsenic(As) 0.002 mg/1 0.01 mg/1 Barium(Da) 0.17 mg/1 2.0 mo/1 Cadmium(Cd) 0.0000 mg/1 0.005 mg/1 Chromium(Cr) 0.000 mg/1 0.1 mg/1 Fluoride(F) 2.20 mg/1 4 mg/l Lead(Pb) 0.002 mg/1 0.015 mg/1 Mercury(Hg) 0.00000 mg/1 0.002 moll Nitrate(N) 0.62 mg/1 Selenium(Se) 10.0 �g/l 0.055 mg/1 0.05 mg/l mg 05 moll 0 0000 /l 0 Silver(Ag) . . Color(Co/Pt unit) 0 no official limit pH 7.72 6.5-8.5 acceptable Conductivity@25 deg. C 5010 umhos/cm no official limit Sodium(Na) 1000 mg/1 20 mg/1 Calcium(Ca) 53 mg/1 no official limit Magnesium(Mg) 56 mg/1 125 ma/1 Potassium(K) 0.2 mg/l no official limit Chloride(Cl) 352 mg/1 '7' Sulfate(SO4) 1220 mg/1 250 mg/1 Phenol. AlkaIinity(CaCO3) 0 mg/1 no official limit Total Alkalinity(CaCO3) 801 mg/1 no official limit Bicarbonate(HCO3) 969 mg/1 no official limit Carbonate(CO3) 0 mg/1 no official limit Dissolved Solids 3350 mg/1 500 mg/1 Hardness (CaCO3) 374 mg/1 200 mg/1 Turbidity(NTU) 12 1 Boron(B) 0.30 mg/1 no official limit Copper(Cu)0.031 mg/l 1.3 mg/l Iron(Fe) 1.05 mg/1 0.3 mg/1 Manganese(Mn) 0.040 mg/1 0.05 mg/1 Molybdenum(Mo)0.005 mg/1 no official limit Ammonia(N) 0.00 mg/1 no official limit Phosphate(P) 0.04 mg/1 no official limit Zinc(Zn) 0.013 mg/1 5.0 mg/1 Nitrite(N) 0 mg/1 1 moil See notes on the next page, Lab Director: B' Bauer REVISED August 2001 Contr t #020328SHS(a) Map #yz0 Date Activated 03/28/02 WEST DIVIDE WATER CONSERVANCY DISTRICT WATER ALLOTMENT CONTRACT NameofApplicant: Silt Heights Subdivision Homeowners Association Quantity of Water in Acre Feet: 1 . 5 5 Applicant, hereby applies to the West Divide Water Conservancy District, a political subdivision of the State of Colorado, organized pursuant to and existing by virtue of C.R.S. 1973, §37-45-101, et seq., (hereinafter referred to as the "District") for an allotment contract to beneficially and perpetually use water or water rights owned, leased, or hereafter acquired by the District. By execution of this Contract and the attached Application, Applicant hereby agrees to the following terms and conditions: 1. Water Rights: Applicant shall own water rights at the point of diversion herein lawfully entitling Applicant to divert water, which will be supplemented and augmented by water leased herein. If Applicant intends to divert through a well, it must be understood by Applicant that no right to divert exists until a valid well permit is obtained from the Colorado Division of Water Resources. 2. Quantity: Water applied for by the Applicant in the amount set forth above shall be diverted at Applicant's point of diversion from the Districts direct flow water rights, and when water is unavailable for diversion pursuant to administration by the Colorado State Engineer during periods when said direct flow water right is not in priority, the District shall release for the use of Applicant up to said quantity in acre feet per year of storage water owned or controlled by the District. It is understood that any quantity allotted from direct flow, storage or otherwise, to the Applicant by the District will be Iimited by the priority of the District's decrees and by the physical and legal availability of water from District's sources. Any quantity allotted will only be provided so long as water is available and the Applicant fully complies with all of the terms and conditions of this Contract. The District and the Applicant recognize that some of the District's decrees may be in the name of the Colorado River Water Conservation District, and the ability of the District to allot direct flow right to the Applicant may be dependent on the consort of the Colorado River Water Conservation District. If at any time the Applicant determines it requires less water than the amount herein provided, Applicant may so notify the District in writing, and the amount of water allotted under this Contract shall be reduced permanently in accordance with such notice. Rates shall be adjusted accordingly in following water years only. 3. Beneficial Use and Location of Beneficial Use: Any and all water allotted Applicant by the District shall be used for the following beneficial use or uses: municipal, domestic and related uses, or commercial (except for commercial use from Alsbury Reservoir and except to the extent that Ruedi Reservoir water may not be available for commercial as that term is defined on Page 5 of Contract No. 2-07-70- W0547 between the United States and the West Divide Water Conservancy District). Applicant's beneficial use of any and all water allotted shall be within or through facilities or upon land owned, leased, operated, or under Applicant's control. 4. Decre and Delivery: Excbange releases made by the District out of storage from Ruedi Reservoir, Green Mountain Reservoir, Alsbury Reservoir, or other works or facilities of the District, or from other sources available to the District, shall be delivered to the 1 Applicant at the outlet works of said storage facilities or at the decreed point of diversion for said other sources, and release or delivery of water at such outlet or points shall constitute performance of the District's total obligation. Delivery of water by the District from Ruedi Reservoir or Green Mountain Reservoir shall be subject to the District's lease contracts with the United States Bureau of Reclamation. Releases from other facilities available to District shall be subject to the contracts, laws, rules, and regulations governing releases therefrom. Furthermore, the District hereby expressly reserves the right to store water and to make exchange releases from structures that may be built or controlled by the District in the future, so long as the water service to the Applicant pursuant to this agreement, is not impaired by said action. Any quantity of the Applicant's allocation not delivered to or used by Applicant by the end of each water year (October 1), shall revert to the water supplies of the District. Such reversion shall not entitle Applicant to any refund of payment made for such water. Water service provided by the District shall be limited to the amount of water available in priority at the original point of diversion of the Districts applicable water right, and neither the District, nor those entitled to utilize the District's decrees, may call on any greater amount at new or alternate points of diversion. The District shall request the Colorado Division of Water Resources to estimate any conveyance losses between the original point and any alternate point, and such estimate shall be deducted from this amount in each case. Water service provided by the District for properties located within the Bluestone and Silt Water Conservancy Districts is provided pursuant to Agreements with said Districts. The Intergovernmental Agreement between the District and the Silt Water Conservancy District, dated January 25, 2001, is recorded as Reception No. 575691, Garfield County Clerk and Recorder's Office. The Intergovernmental Memorandum of Understanding between the District and the Bluestone Water Conservancy District, dated April 26, 2001, is recorded as Reception No. 584840, Garfield County Clerk and Recorder's Office. 5. Alternate Point ofDiversion and Plan of Augmentation: Decrees for alternate points of diversion of the District's water rights or storage water may be required in order for Applicant to use the water service contemplated hereunder. Obtaining such decree is the exclusive responsibility of Applicant. The District reserves the right to review and approve any conditions which may be attached to judicial approval of said alternate point of diversion as contemplated or necessary to serve Applicant's facilities or lands. Applicant acknowledges and agrees that it shall be solely responsible for the procedures and legal engineering costs necessary for any changes in water rights contemplated herein, and further agrees to indemnify the District from any costs or losses related thereto. Applicant is solely responsible for providing works and facilities necessary to obtainidivert the waters at said alternate point of diversion and deliver them to Applicant's intended beneficial use. Irrespective of the amount of water actually transferred to the Applicant's point of diversion, the Applicant shall make annual payments to the District based upon the amount of water allotted under this Contract In the event the Applicant intends to apply for an alternate point of diversion and to develop an augmentation plan and institute legal proceedings for the approval of such augmentation plan to allow the Applicant to utilize the water allotted to Applicant hereunder, the Applicant shall give the District written notice of such intent. In the event the Applicant develops and adjudicates its own augmentation plan to utilize the water allotted hereunder, Applicant shall not be obligated to pay any amount under Paragraph 19 below. In any event, the District shall have the right to approve or disapprove the Applicant's augmentation plan and the Applicant shall provide the District copies of such plan and of all pleadings and other papers filed with the water court in the adjudication thereof. 6. Contract Payment-. Non-refundable, one time administrative charge, in the amount determined by the Board of Directors of the District from time to time, shall be submitted with the application for consideration by the District. 2 Annual payment for the waLcr service described herein shall be determined by the ,ioard of Directors of the District. The initial annual payment shall be made in full, within thirty (30) days after the date of notice to the Applicant that the initial payment is due. Said notice will advise the Applicant, among other things, of the water delivery year to which the initial payment shall apply and the price which is applicable to that year. Annual payments for each year thereafter shall be due and payable by the Applicant on or before each January 1. If an annual payment is not made by the due (Intl' a flat $50 late fee will be assessed. Final written notice prior to cancellation will be sent certified mail, return receipt requested, to the Applicant at such address as may be designated by the Applicant in writing or set forth in this Contract or Application. Water use for any part of a water year shall require payment for the entire water year. Nothing herein shall be construed so as to prevent the District from adjusting the annual rate in its sole disuetion for future years only. Ifpayment is not made within fifteen (15) days after the date of said written notice, Applicant shall at District's sole option have no further right, title or interest under this Contract without further notice, and delivery may be immediately curtailed. The allotment of water, as herein made, may be transferred, leased, or otherwise disposed of at the disc. -retina of the Board of Directors of the District Upon cancellation ofthis water allotment Contract with the District, the District shall notify the Division of Water Resources offices in Denver and Glenwood Springs. The Division of Water Resources may then order cessation of all water use. 7. Additional Fees and Costs: Applicant agrees to defray any expenses incurred by the District in connection with the allotment of water rights hereunder, including, but not limited to, reimbursement of legal and engineering costs incurred in connection with any water rights and adjudication necessary to allow Applicants use of such allotted water rights. 8. Assignment: This Contract shall not inure to the benefit of the heirs, successors or assigns of Applicant, without the prior written consent of the District's Board of Directors. Any assignment of Applicant's rights under this Contract shall be subject to. and must comply with, such requirements as the District may hereafter adopt regarding assignment of Contract rights and the assumption of Contract obligations by assignees and successors. Nothing herein shall prevent successors to a portion of Applicant's property from applying to the District for individual and separate allotment Contracts. No assignment shall be recognized by the District except upon corrtpletion and filing of proper forms for assignment and change of ownership. In the event the water allotted pursuant to this Contract is to be used for the benefit of land which is now or will subsequently be subdivided or held in separate ownership, the Applicant may only assign the Applicant's rights hereunder to: 1) No more than three separate owners all of whom shall be party to a well sharing agreement satisfactory to the District; or 2) A homeowners association, water district, water and sanitation district or other special district properly organized and existing under the laws of the State of Colorado, and then, only if such parties, association or special district establishes to the satisfaction ofthe District that it has the ability and authority to perform the Applicant's obligations under this Contract In no event shall the owner of a portion, but less than all, of the Applicant's property to be served under this Contract have any rights hereunder, except as such rights may exist pursuantto a well sharing agreement or through a homeowners association or special district as provided above. Upon the sale ofthe real property to which this Contract pertains, Applicant shall make buyer aware of this Contract and proper forms for assignment and change of ownership must be completed. 3 9. Other Rules: Applicant shall be bound by the provisions of the Water Conservancy Act of Colorado; by the rules and regulations of the Board of Directors of the District; and ail amendments thereof and supplements thereto and by all other applicable law. 10. Operation and Maintenance Arueernent Applicant shall enter into an "Operation and Maintenance Agreement" with the District under terms and conditions determined by the board of Directors of the District, if and when, the Board of said District determines in its sole discretion that such an agreement is required. Said agreement may contain, but shall not be limited to, provisions for additional annual monetary consideration for extension ofDistrict delivery services and for additional administration, operation, and maintenance costs; or for other costs to the District which may arise through services made available to the Applicant. 11. Change of Use: The District reserves the exclusive right to review, reapprove or disapprove any proposed change in use of the water allotted hereunder. Any use other than that set forth herein or any lease or sale of the water or water rights allotted hereunder without the prior written approval of the District shall be deemed to be a material breach of this Contract. 12. Use and Place ofUse: Applicant agrees to use the water in the manner and on the property described in the documents submitted to the District at the time this Contract is executed, or in any operation and maintenance agreement provided by Applicant. Any use other than as set forth thereon or any lease or sale of the water or water rights herein, other than as permitted in paragraph 8 above, shall be deemed to be a material breach of this agreement. 13. Title: It is understood and agreed that nothing herein shall be interpreted to give the Applicant any equitable or legal fee title interest in or to any water or water rights referred to herein. 14. Conservation: Applicant shall use commonly accepted conservation practices with respect to the water and water rights herein, and hereby agrees to be bound by any conservation plan adopted hereafter by the District for use of District owned or controlled water or water rights. 15. Restrictions: Applicant shall re) ict actual diversions to not exceed the contract amount, which provides water (on the formula of one acre thot per dwelling) for ordinary household purposes inside one single family dwelling, the watering of domestic livestock, fire protection, and the irrigation of lawn and garden as specified in the Application. Applicant shall also comply with all restrictions and limitations set forth in the well permit obtained from the Colorado Division of Water Resources. Watering of livestock shall be restricted to Applicant's domestic animals not to be used for commercial purposes unless Applicant obtains approval from the Colorado Division of Water Resources for commercial usellivestock watering, provided that in no event shall actual diversions exceed the amount of water provided by this Contract. Violation of this paragraph 15 shall be deemed to be a material breach of this Contract. 16. Well Permit: If Applicant intends to divert through a well, then Applicant must provide to District a copy of Applicant's valid well permit before District is obligated to deliver any water hereunder. 4 17. Measuring Device or Meter Applicant agrees to provide., at its own expense, a measuring device deemed acceptable by the District's Engineer after consultation, or a totalizing flow meter with remote readout to continuously and accurately measure at all times all water diverted pursuant to the terms of Applicant's water right and the terms of this Contract Applicant agrees to provide accurate readings from such device or meter to District upon District's request. Applicant acknowledges that failure to comply with this paragraph could result in legal action to terminate Applicant's diversion ofwater bythe State of Colorado Division of Water Resources. By signing this Contract, Applicant hereby specifically allows District, through its authorized agent, to enter upon Applicant's property during ordinary business hours for the purposes of determining Applicant's actual use of water. 18. Representations: By executing this Contract, agrees that it is not relying on any legal or engineering advice that Applicant may believe has been received from the District. Applicant further acknowledges that it has obtained all necessary legal and engineering advice from Applicant's own sources other than the District Applicant further acimowtc-rlePo that the District makes no guarantees, warranties, or assurances whatsoever about the quantity or quality of water available pursuant to this Contract. Should the District be tunable to provide the water contracted for herein, no damages may be assessed against the District, nor may Applicant obtain a refund from the District 19. Costs of Water Court Filing and Augmentation Plan: Should the District, in its own discretion, choose to include Applicant's Contract herein in a water court filing for alternate point of diversion or plan of augmentation, then Applicant hereby agrees to pay to the District, when assessed, an additional fee representing the District's actual and reasonable costs and fees for Applicant's share of the proceedings. Applicant shall be assessed a pro -rata share of the total cost incurred by the District in preparing, filing and pursuing to decree the water court case. The pro -rata share shall be calculated by dividing such total cost by the number of contractees included in the filing. To the extent that the District is caused additional casts because of objection filed specifically due to the inclusion of Applicant's Contract in the filing, such additional costs may be charged specifically to Applicant and not shared on a pro -rata basis by all contractees. 20. Binding Agree;nent: This agreement shall not be complete nor binding upon the District unless attached hereto is the form entitled "Application to Lease Water From West Divide Water Conservancy District" fully completed by Applicant and approved by the Districts engineer. Said attachments shall by this zefezertce thereto be incorporated into the terms of this agreement All correspondence from the District to Applicant refeaLing to or relating to this agreement is by this reference incorporated into this agreement as further terms and conditions of this agreement 21. Warning: IT IS THE SOLE RESPONSIBILITY OF THE APPLICANT TO OBTAIN A VALID WELL PERMIT OR OTHER WATER RIGHT IN ORDER TO DIVERT WATER, INCLUDING THE WA 1 ER ACQUIRED UNDER THIS CONTRACT. IT IS THE CONTINUING DUTY OF THE APPLICANT TO MAINTAIN THE VALIDITY OF THE WELL PERMIT OR WATER RIGHT INCLUDING FILING FOR EXTENSIONS OF PERMITS, FLUNG WELL COMPLETION REPORTS, FILING STATEMENTS OF BENEFICIAL USE, OR OTHERWISE LAWFULLY APPLYING THE WATER TO BENEFICIAL USE ON A REGULAR BASIS WITHOUT WASTE. 5 22. AREA B. CONT. .S/LEASES: [F APPLICANT'S WELL OR OTHER W. _A RIGHT THAT IS THE SUBJECT OF THIS CONTRACT/LEASE IS LOCATED OUTSIDE "AREA A" AS DESIGNATED BY THE DISTRICT. THEN THIS PARAGRAPH APPLIES: THE AUGMENTATION WATER PROVIDED BY THE DISTRICT UNDER THIS CONTRACT MAY ONLY PROTECT APPLICANT'S WATER RIGHT FROM A CALL ON THE COLORADO RIVER AND MAY NOT PROTECT APPLICANT FROM A CALL FROM ANY OTHER SENIOR RIGHT. NO REPRESENTATION OTHERWISE IS MADE BY THE DISTRICT. IF THIS IS A CONCERN TO APPLICANT, THIS CONTRACT/LEASE MAY BE RESCINDED UPON WRITTEN NOTICE DELIVERED TO THE DISTRTCT BY THE APPLICANT WITHIN THE NEXT 30 DAYS FOLLOWING THE AFFIXING OF SIGNATURES ON THIS CONTRACT/LEASE IN WHICH EVENT ALL SUMS PAID BY APPLICANT FOR THIS CONTRACT/LEASE SHALL BE IMMEDIATELY REFUNDED TO APPLICANT. Applicant: Applicant: STATE OF COLORADO ) ) ss. COUNTY OF GARFIELD ) The foregoing instrument was acknowledged before me on this /7 day 7.21 4 Witness my hand and official seal. /i My commission expires: ORDER of tL �, �:i ..19_ by Notary I/ublic After a hearing by the Board of Directors of the West Divide Water Conservancy District on the application, it is hereby ORDERED that said application be granted and this contract/lease shall be and is accepted by the District. ATTEST: Secretary WEST DIVIDE WATER CONq By CY DISTRICT President Date This contract/lease includes and is subject to the terms and conditions of the following documents which must accompany this contract/lease: 1. Map showing location of point of diversion (use map provided) 2. Application and Data Form fully completed and signed 3. 6 SOILS CONSERVATION SERVICES MAP & DRAINAGE PLAN /'f/Gh' LUNT.�Y �NG/NEE�?.�NG DRAINAGE PLAN SILT HEIGHTS SUBDIVISION GARFIELD COUNTY, CO HCE JOB NO. 2000023.01 January 4, 2002 Edward R. White, E.I. Design Engineer Reviewed .y: Leslie A. Hope, P.E. Project Manager 1517 Blake Avenue Suite 101 Glenwood Springs, CO 81601 Telephone (970) 945-8676 - Fax (970) 945-2555 14 Inverness Drive East Suite D-136 Englewood, CO 80112 Telephone (303) 925-0544 - Fax (303) 925-0547 SECTION INTRODUCTION HYDROLOGY DRAINAGE PLAN OFF-SITE FLOWS SUMMARY DRAWINGS: APPENDIX: TABLE OF CONTENTS Vicinity Map (8.5" x 11") SCS Map (8.5" x 11") Grading and Drainage Plan (11"x 17") Calculations 0)0 PAGE 1 1 1 1 1 I, Leslie A. Hope, P.E., certify that the p • •osed design, constructed in conformity with engineered plans and details, will not cause damage to adjacent or downstream properties resulting from erosion, flood or environmental impact during construction and after completion. This statement is not valid for storm events outside design parameters or circumstances beyond my control. k:\wp\2000\023\drainage.doc Introduction The proposed subdivision is located off County Road 259 in Garfield County approximately 4 miles from the Town of Silt, Colorado. This project proposes the division of 36.44 acres into five single-family residential lots. See the enclosed Vicinity Map for site location. Hydrology The hydrologic methods used for this study are outlined in the Soil Conservation Service (SCS) publication "Procedures for Determining Peak Flows in Colorado" (1984). Peak on-site flows in this area will be derived primarily from rainfall because the site is below 8000 feet in elevation. Therefore, the storm drainage system should be adequate to handle on-site spring snowmelt runoff. This site does not fall within a Federal Emergency Management Agency (FEMA) Flood Insurance Rate Map boundary. Drainage Plan The proposed development consists of subdividing the existing property into 5 lots ranging in size from 8.343 to 9.996 acres. An existing house is located on the proposed Lot 5. The proposed improvements consist of installing a gravel road to access the new lots, a sediment control fence adjacent to the proposed subdivision improvements, and installing utilities to the lots. The development will have minimal impact on drainages running through the property. Weighted curve numbers have been determined for both historic and developed conditions. The curve number did not change due to the large lot size and the small changes to the existing conditions. No detention will be required for this development. Building envelopes are located on the lots such that impacts to the existing drainages have been reduced. The driveways will be installed with individual building permits. The Farmers Irrigation Ditch runs through lots 1, 2, 3 and 4, but building envelopes have been located such as to avoid additional crossings. Off -Site Flows The development has one offsite basin. The area involved is located to the north of the subject property. This basin contains approximately 51 acres and is primarily vegetated with sagebrush and grasses. The off-site flows are based on historic conditions. This development will have minimal impacts to offsite drainage ways. Summary Drainage for the Silt Heights Subdivision has been designed to mitigate the expected impacts of storm water runoff as outlined by Garfield County drainage regulations. -1- Appendix 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 HIGH COUNTRY ENGINEERING, INC. 1517 BLAKE AVENUE LENWOOD SPRINGS, CO 81601 PHONE: (970) 945-8676 FAX: (970) 945-2555 TERRI PATRICK GARFIELD COUNTY, CO 2000023.01 SILT HEIGHTS SUBDIVISION VICINITY MAP SCALE:1: 2000 IMAGE DES. DJD CK. LAH DR. DJD DATE 1 /4/02 FILE NO. 2000023.01 SHEET 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 On—site Soil Types 3: Arvada loam, 1 to 6 percent slopes (deep, well drained, slow permeability, runoff medium) 41: Kim loam, 6 to 12 percent slopes (deep, well drained, mod. permeability, runoff slow) 56: Potts loam, 6 to 12 percent slopes (deep, well drained, mod. permeability, runoff medium) HIGH COUNTRY ENGINEERING, INC. 1517 BLAKE AVENUE LENWOOD SPRINGS, CO 81601 PHONE: (970) 945-8676 FAX: (970) 945-2555 TERRI PATRICK GARFIELD COUNTY, COLORADO SILT HEIGHTS SUBDIVISION SCS MAP SCALE:1' =1000' SCS DES. ERW DR. ERW CK. 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I! ■ ■ 1 . .■ ..■. ---� ii■ .on .i' ■ rfirjr 11 m■!{1J.;!!-■-iounuauln■T■ommmu uunllum -�---.immem.■.iT.�o.i..i�:91IUI.��ehai...N■■■■U111 1■......■■1t.1111�111111111 1 1 ■■■� ' i- 1 . p.111......„a..EU.1111uU1111111111111111 ---- o.■0UT ■.. 111�1�11 111 11 i i t1 --■Q.::.uu..u.iiiiiiiiits..i..Uul..0 iiiiiiiiiiiiu •E��•US■■■■■■ IlliEl�iii m E 71 9 111'!1! 11 I n g� ■■/■ 11■IIIllllm■■■// 11 nunnlumnuiu ���mm■ ■■■■■■// 1 1 ■ 1 I I ■■1111 111111111111i■11■1111�i1111i111111111111111 111111111111111111111101111 1 1111■■■ ■11 11111 1 1 !!'' ii 1. ■■■■■■1 1/,1,11111111111 ■■1.11111 1111 111111111111111 i1�10 I m 11111 111111 I illl�1111111 ..�■■■■�■■C111�11L1111 11 ��■■■ ■■■■■■■■ 1 ' ■' !E11111111 i111�1111111 111111111111111111111111111 ..■■._.....'., ii� "an ■ommuu ■I� in �EE11n n1 ._ l 1111__0�'=i�i�iiiiii Ilii!' lIi:iii:iiiiiii !iiiiii■■■u.uuIIln 1 !!illi A �!II�IWIg111111uniu�unnIIIIIIIIII mum 2 3 4 5 6 7 6 9 10 60 40 20 10 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Time of Concentration Tc -Hours 12 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 RUNOFF FOR INCHES OF RAINFALL CURVE 67 0.9 Inches 0.14 1 2 3 4 0.54 5 6 7 8 9 1 0 11 12 1 3 14 15 16 1 1 7 8 19 20 1.80 2.53 3.31 4.12 4.97 5.83 6.72 7.61 8.53 9.45 10.37 11.31 12.25 13.20 14.15 15.11 1.09 1.74 2.46 3.23 4.04 4.88 5.75 6.63 7.52 8.43 9.35 10.28 11.22 12.16 13.10 14.06 15.01 15.97 (P-0.25)2 NOTE: Runoff value determined by equation Q = P+ 0.8 S 5.40 6.27 7.16 8.07 8.98 9.91 10.84 11.78 12.73 13.67 14.63 15.59 REFERENCE: National Engineering Handbook, Section 4, HYDROLOGY 47 1 r 1 1 1 1 1 1 1 1 1 1 1 CURVE 68 RUNOFF FOR INCHES OF RAINFALL Tens Inches 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0 1 0.00 0.01 0.01 0.03 G.C4 C.06 0.08 0.11 0.13 0.16 2 ', 0.24' 0.23 0.27 0.31 ',,0.35' 0.39 0.43 0.48 0.53 0.58 3 0.63 0.68 0.73 0.79 0.85 0.90 0.96 1.02 1.08 1.14 4 1.21 1.27 1.34 1.40 1.47 1.53 1.60 1.67 1.74 1.81 5 1.88 1.95 2.03 2.10 2.17 2.25 2.32 2.4C 2.47 2.55 6 2.62 2.70 2.78 2.86 2.93 3.01 3.09 3.17 3.25 3.33 7 3.41 3.49 3.58 3.66 3.74 3.82 3.90 3.99 4.07 4.15 8 4.24 4.32 4.41 4.49 4.58 4.66 4.75 4.83 4.92 5.00 9 5.09 5.18 5.26 5.35 5.44 5.53 5.61 5.70 5.79 5.88 10 5.97 6.05 6.14 6.23 6.32 6.41 6.50 6.59 6.68 6.77 11 6.86 6.95 7.04 7.13 7.22 7.31 7.40 7.49 7.58 7.67 12 7.76 7.85 7.94 8.04 8.13 8.22 8.31 8.40 8.49 8.59 13 8.68 8.77 8.86 8.95 9.C5 9.14 9.23 9.33 9.42 9.51 14 9.60 9.70 9.79 9.88 9.98 10.07 10.16 10.26 , 10.35 10.44 15 10.54 10.63 10.73 10.82 10.91 11.01 11.10 11.20 11.29 11.38 16 11.48 11.57 11.67 11.76 11.86 11.95 12.04 12.14 12.23 12.33 17 12.42 12.52 12.61 12.71 12.80 12.90 12.99 13.09 13.18 13.28 18 13.38 13.47 13.57 13.66 13.76 13.85 13.95 14.04 14.14 14.23 19 14.33 14.43 14.52 14.62 14.71 14.81 14.91 15.00 15.10 15.19 20 15.29 15.39 15.48 15.58 15.67 15.77 15.87 15.96 16.06 16.16 NOTE: Runoff value determined by equation Q = P-0.2 S)2 P+ 0.8 S REFERENCE: National Engineering Handbook, Section 4, HYDROLOGY 48 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Project Sly He 5 By CA1V Subject Pf4:410y19- Date 10/02- Ck'd by Repay --t Job. No 2690 'eZ3. 6,z Page Date of GLENW00D SPRINGS, CO 923 Cooper Ave. • Glenwood Springs, CO 81601 (970) 945-8676 • (970) 945-2555 fax ENGLEW00D,CO 14 Inverness Drive East, Suite 0-136 • Englewood, CO 80112 (303) 925-0544 • (303) 925-0547 fax GRAND JUNCTION, CO (970) 858-0935 (970) 858-0775 fax ..6 ,Cr = f gq4 _ .36,ii occe 1 (4): p 98 ., - 1D1 it ee 1}5-F6) Uci je- /4f 6h' A-601 Exist" 4.0. SGyebcvsh it/ _ iig 5 = 5 4 9� - i,5zL-I,5S3 i (, f (s9dz) a (A/ , a co.,W (g,5 t- F5` (6-7- iz,-,1"-e..?)( 76hA101 • ?) (!' )) 4- (59)902) It (15215- 33) -6, - , 1833•. 5,62 158 6 ) y) ;en (7;) i6 ?o t icz,ri/F s6.__ .� _, 06! -- 6? 6 ? . 76 y Ce,oceP t4 L= 80�/ LHS` -3 =0,(3Z rni ii.9 �,3Fi�S 13 16/15-t4 ginE ct ''C& ,. M e(/I e'"'A %5 .... r 1 • -T = 'H T' 4eie L = A W- Tom= n.1 ( 3 a3g.3`_ .�. t5z ) O, o �3 > Ose T .7. .1 4, (p / Zai 38 er > ! ! .e G S It 97 ioo r. Qi _- 0,70/'_ Gl= 0.35 Z`l-Ir recap. - Z. (py. lig) Lf ioe , - t (590 5 ,r = z . ' fi C571:4 c5 'a `-n - ec. (,ry, i z) ' .(0,o5?"i'' ' 0. c, —7,.„- Z ' (7X (0, z°9 (o. 5-'9 = = I(•3 c� 15.6 c 5 GLENW00D SPRINGS, CO 923 Cooper Ave. • Glenwood Springs, CO 81601 (970) 945-8676 • (970) 945-2555 fax ENGLEW00D,CO 14 Inverness Drive East, Suite 0-136 • Englewood, CO 80112 (303) 925-0544 • (303) 925-0547 fax GRAND JUNCTION, CO (970) 858-0935 (970) 858-0775 fax 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Project By 6e6✓ c /lei hes Subject -12fih SY i?:'fi Date (/97'z Ck'd by i��psrr Job. No ?c CPp Page z Date of Pr;--;; i Cv n ,-ei-e✓jS �p G. -,,,e/ G /vcvg 1-lt9viej 50,e1,C(15 4 ds 2-7 6? -,3-e-/ % l0, 9v .> /sd7,s t� 5-t C 5z z c 31 3-tZ rte: -_ lOt,/ AJ 83- N = iB ASS 6?- R/t`t = rim, irrorjel 'k 2.30O J + exis-hn9 _,e7. --(9_0_57,,:z 4i2-Cco+pr,in+5 house We9Ated 6111: (6 )) 5'O (6 = 5? ? f 95) t C 10. 222! 8) 9 1 -it J ?Sa .515 t- 1 t 0,54,5-3L2162.2. ?-) q. y r /O, 90 - !,0 '9-4 if 3 I ) /> / CO 4/3"?- lc-ne B4. Cdi ,•€0 _ c. 15z )Ma !),, 863<6 = 6 r'9'=';''6, L = 86,1' Ail= 38' Z j1. 24/- At- ?rec 1 * r45231\ 35 / r _ 2.0 O, 38S — - ° 'r 7/19© O ?3 '� (s e T., z-- ,1 l, CS7Y7 (p - /,z) 9r /00 y� Zq/-fir i�rec:/a -o.z 0 DCS p _ Z. zf �' ? 070 s� t � 90 '*s`r;) . (0 c siz.„) • (0, 0.5-77 0.5-7o.,c x) - rhz z) C 0,2.0 --)__ (0.359-7-- J 3 l,`�', -r-- GLENWOOD SPRINGS, CO 923 Cooper Ave. • Glenwood Springs, CO 81601 (970) 945-8676 • (970) 945-2555 fax ENGLEW00D, CO 14 Inverness Drive East, Suite D-136 • Englewood, CO 80112 (303) 925-0544 • (303) 925-0547 fax GRAND JUNCTION, CO (970) 858-0935 (970) 858-0775 fax 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 �OUNTiP F -NG/ Project By bel✓ Subject Ula` 00e Date V/OZ S1 Ck'd by Job. No ZO c'o? . Oz Date Page 3 of GLENWOOD SPRINGS, CO 923 Cooper Ave. • Glenwood Springs, CO 81601 (970) 945-8676 • (970) 945-2555 fax ENGLEWOOD, CO 14 Inverness Drive East, Suite D-136 • Englewood, CO 80112 (303) 925-0544 • (303) 925-0547 fax GRAND JUNCTION, CO (970) 858-0935 (970) 858-0775 fax = Z, 2Z 6,)61// h. = 37 / cfcce,3_ = v. o8 nci grea. ............. _ ................ . ,� ©T Gclitc , -e>r acv 1_C.13:2.11:1 L^Z3 to' dN = Sao' _ .13i32"1: ?,O.3B - ,Ooh" ' c &� = • 1 ,-� 100 9J.-- 21-A ?fac 472 -0.17/ -..p. z.7 (p9, " 7-) "Y Q,e®- O. q - (r (1 3Z qa cs' 'X,/) CSS ° ) . , (O. 0 g (le • O i "e 9 ' (O. 2 ' (c , 32 l; i'l) = 11.5—C11-5._ ;pi) ::Zs f'c4. f tG o' GLENWOOD SPRINGS, CO 923 Cooper Ave. • Glenwood Springs, CO 81601 (970) 945-8676 • (970) 945-2555 fax ENGLEWOOD, CO 14 Inverness Drive East, Suite D-136 • Englewood, CO 80112 (303) 925-0544 • (303) 925-0547 fax GRAND JUNCTION, CO (970) 858-0935 (970) 858-0775 fax 1 1 1 1 1 1 1 1 1 1 1 1 .oil type and 1 :, usually hien .n ;aline ssi 1 8.7 Curve Number Estimation and Abstractions 265 The values of GV for various land uses on these soil types are given in Table 8.7.3. For a water- shed made up of several soil types and land uses, a composite CN can be calculated. Minimum infiltration rates for the various soil groups are: Group Minimum Infiltration Rate (in/hr) A 0.30 - 0.45 B 0.15 - 0.31) C 1) -0.05 Table 8.7.3 Runoff Curve Numbers (Average Watershed Condition. !,, = 0.25) Curve Numbers for Hydrologic Soil Group Land Use Dc.cnpuon AB CD Fully de%e!upcd urban arca.' Ive.etation estuhluhedl I..t`•vn ,Ten .pace., park.. ._ It c,wnc.. ccmctenc•. etc i„ ,.1 ,; n.an, n, _r.t.. ,.owcr on 75 or more of the area 3`t hl 7a I) Fur condition. gra.• :,wer on 5IY';- R) '5'; ,,f the area 49 69 79 84 Poor condition: erass cover on 50cr or less of the arca 68 79 86 89 Paved parking lots. roof.. driveways. etc. 98 98 98 98 Streets and roads Paved with curbs and .torn sewers 98 98 98 98 711- Gravel 76 85 89 91 Dtrt 72 82 87 39 Pa%,ed . Ith open dit:he. 83 89 9_ 93 Avera_•e c impervious" Commercial .ind !•u.tne., lre.is 85 89 92 94 93 Indu.tnal districts 72 81 88 9i 93 Row house.. t ". n house.. and residential 65 77 85 91) 92 wtth.lot sites 18 acre or less Residential: average lot size 1/4 acre 38 61 .75 83 87 1/3 acre 30 57 72 81 86 1/2 acre 25 54 70 80 85 l acre 20 51 68 79 84 acre 12 46 65 77 82 Developing urban areas' t no vegetation established) Newly graded arca 77 86 91 94 Cover Hydrologic Land Use Treatment of Practice Condition Cultivated agricultural land Fallow Row crops Straight row 77 86 91 94 Conservation tillage Poor 76 85 90 93 Conservation tillage Good 74 83 88 90 Straight row Poor 72 81 88 91 Straight row Good 67 78 85 89 Conservation tillage Poor 71 80 87 90 Conservation tillage Good 64 75 82 85 1 1 is 1 1 1 266 Chapter 8 Surface Runoff Table 8.7.3 Runoff Curve Numbers (continued) Curve Numbers for Cover Hydrologic Soil Grou Hydrologic Land Use Treatment of Practice Condition° A BCE Contoured Poor 70 79 84 81 Contoured Good 65 75 82 8( Contoured and conservation Poor 69 78 83 8' tillage Good 64 74 81 8. Contoured and terraces Poor 66 74 80 8 Contoured and terraces Good 62 71 78 8 Contoured and terraces Poor 65 73 79 8 and conservation tillage Good 61 70 77 8 Small grain Straight row Poor 65 76 84 8 Straight row Good 63 75 83 8 Conservation tillage Poor 64 75 33 8 Conservation tillage Good 60 72 80 8 Contoured Poor 63 71 82 Contoured Good 61 73 31 Contoured and conservation Poor 62 73 s1 tillage Good 60 72 80 Contoured and terraces Poor 61 72 79 Contoured and terraces Good 59 70 78 Contoured and terraces Poor 60 71 78 and conservation tillage Good 58 69 77 Close -seeded Straight row Poor 66 77 35 legumes or Straight row Good 58 72 81 rotation meadow' Contoured Poor 64 75 33 Contoured Good 55 69 7S Contoured and terraces Poor 63 73 80 Contoured and terraces Good 51 67 76 Noncultivated agricultural land Pasture or range No mechanical treatment Poor 63 79 36 No mechanical treatment Fair 49 69 79 No mechanical treatment Good 39 61 74 Contoured Poor 47 67 81 Contoured Fair 25 59 75 Contoured Good 6 35 70 Meadow — 30 58 71 Forestland—grass or Poor 55 73 82 orchards—evergreen or Fair 44 65 76 deciduous Good 32 58 72 Brush Poor 48 67 77 Good 20 48 65 Woods Poor 45 66 77 Fair 36 60 73 Good 25 55 70 Farmsteads — 59 74 82 Forest–range 79 86 Herbaceous Poor Fair 71 80 Good 61 74 1 10 Included with this soil in mapping are small areas of Detra soils and Rock outcrop. These areas make up about 5 to 10 percent of the map unit. Permeability is moderately slow, and available water capacity is high. The effective rooting depth is 60 inches or more. Surface runoff is medium, and the erosion hazard is moderate. This soil is used mainly for wildlife habitat and limited grazing. The native vegetation on this soil is mainly Gambel oak, serviceberry, elk sedge, and bromes. When range condition deteriorates, forbs and woody shrubs increase. When the range is in poor condition, Kentucky bluegrass, undesirable weeds, and annual plants are abundant. Properly managing grazing main- tains and improves range condition. Mule deer, elk, cottontail rabbit, wild turkey, and blue grouse find habitat on this soil. Community development and sanitary facilities are lim- ited by steep slopes and low strength. This soil is in capability subclass Vile, nonirrigated. 2—Arle-Ansari-Rock outcrop complex, 12 to 65 percent slopes. This complex consists of strongly slop- ing to steep soils and Rock outcrop on mountainsides and sloping alluvial fans. Elevation ranges from 5,500 to 7,500 feet. The soils formed in alluvium derived from red -bed shale and sandstone. The average annual pre- cipitation is about 16 inches, the average annual air temperature is about 42 degrees F, and the average frost -free period is about 100 days. The Arle soil makes up about 45 percent of the com- plex, the Ansari soil makes up about 35 percent, and Rock outcrop makes up about 20 percent. The Arle soil is moderately deep and well drained. Typically, the surface layer is reddish brown very stony loam about 10 inches thick. The subsoil and substratum are reddish brown very stony loam about 22 inches thick. Soft reddish brown sandstone and shale are at a depth of 32 inches. Permeability of the Arle soil is moderate, and available water capacity is low. Effective rooting depth is about 20 to 40 inches. Surface runoff is medium, and the erosion hazard is severe. The Ansari soil is shallow and well drained. Typically, the surface layer is reddish brown loam about 10 inches thick. The substratum is reddish brown stony loam. Bed- rock is hard, reddish brown sandstone. Permeability of the Ansari soil is moderate, and availa- ble water capacity is low. Effective rooting depth is about 10 to 20 inches. Surface runoff is rapid, and the erosion hazard is severe. Rock outcrop is mainly red sandstone. This complex is used mainly for grazing and wildlife habitat. The native vegetation on the Arle soil is mainly wheat - grass, Indian ricegrass, mountainmahogany, and sage - SOIL SURVEY brush. The native vegetation on the Ansari soil is mainly Indian ricegrass, wheatgrass, and sagebrush. When range condition deteriorates, forbs and shrubs increase. When the range is in poor condition, undesira- ble weeds and annual plants are numerous. Properly managing grazing maintains and improves range condi- tion. Mule deer, rabbit, and grouse find habitat on these soils. Use of this complex for community development or as a source of construction material is limited mainly by depth to rock, steep slopes, thin layers of borrow materi- al, and large stones. Special design can overcome these limitations. Drainage and structures to control runoff from snowmelt reduce erosion around construction sites and roads. This complex is in capability subclass Vile, nonirrigat- ed. 3—Arvada loam, 1 to 6 percent slopes. This deep, well drained, sloping soil is on fans and high terraces (fig. 4). Elevation ranges from 5,100 to 6,200 feet. This soil formed in highly saline alluvium derived from sand- stone and shale. The average annual precipitation is about 12 inches, the average annual air temperature is about 48 degrees F, and the average frost -free period is about 120 days. Typically, the surface layer is strongly alkaline or very strongly alkaline, pale brown loam about 3 inches thick. The subsoil is brown silty clay loam about 14 inches thick. The substratum is light brown or brown silty clay loam to a depth of 60 inches. Included with this soil in mapping are small areas of Limon, Kim, Heldt, and Wann soils. Also included are some soils that are high in silt. Permeability is very slow, and available water capacity is moderate. Effective rooting depth is 60 inches or more. Organic matter content of the surface layer is low. Surface runoff is medium, and the erosion hazard is moderate. This soil is used mainly for wildlife habitat, limited grazing, and some irrigated farming. Irrigated crops produce very poorly because the soil takes water in very slowly and is droughty. Leaching is needed to remove excess salts if this soil is to be irrigat- ed. Soil amendments containing sulphur are helpful in leaching the salt. The native vegetation on this soil is mainly saltgrass, alkali sacaton, and greasewood. When range condition deteriorates, forbs and shrubs increase. Properly managing grazing maintains and im- proves range condition. Seeding improves range in poor condition. Western wheatgrass, alkali sacaton, and tall wheatgrass are suitable for seeding. Preparing a seedbed and drilling the seed are good practices. Irrigat- ing new seedings is necessary for successful establish- 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 RIFLE AREA, COLORADO ment. Reducing brush improves the range if the grass understory is adequate. Cottontail rabbit and pheasant find shelter on this soil if they can obtain food in surrounding areas. Use of this soil for sanitary facilities, for community development, and as a source of construction material is limited by the high shrink -swell potential, slow permeabil- ity, clayey textures, and salinity. This soil is in capability subclass VIIs, irrigated and nonirrigated. 4—Arvada loam, 6 to 20 percent slopes. This deep, well drained, sloping soil is on fans and high terraces. Elevation ranges from 5,100 to 6,200 feet. This soil formed in highly saline alluvium derived from sandstone and shale. The average annual precipitation is about 12 inches, average annual air temperature is about 48 de- grees F, and the average frost -free period is about 120 days. Typically, the surface layer is moderately alkaline, pale brown loam about 3 inches thick. The subsoil is brown silty clay loam about 14 inches thick. The substratum is light brown or brown silty clay loam to a depth of 60 inches. Included with this soil in mapping are small areas of Limon, Kim, and Heldt soils. Permeability is very slow, and available water capacity is high. Effective rooting depth is 60 inches or more. Organic matter content of the surface layer is low. Sur- face runoff is moderately rapid, and the erosion hazard is severe. This soil is used mainly for wildlife habitat and limited grazing. The native vegetation on this soil is mainly sagebrush, greasewood, and wheatgrass. When range condition deteriorates, grasses decrease and weedy forbs, cheatgrass, big sagebrush, and greasewood increase. Properly managing grazing main- tains and improves range condition. Seeding improves range in poor condition. Western wheatgrass and tall wheatgrass are suitable for seeding. Preparing a seedbed and drilling the seed are good practices. Irrigat- ing new seedings is necessary for successful establish- ment. Brush should not be reduced because grass pro- duction is low and some desirable native shrubs could be destroyed. Cottontail and pheasants find shelter on this soil if they can obtain food in surrounding areas. Use of this soil for sanitary facilities and as a source of construction material is limited by the large amounts of clay and salts. This soil is corrosive to steel and con- crete. Community development is limited by high shrink - swell potential, salinity, and steep slopes. This soil is in capability subclass VIIs, nonirrigated. 5—Ascalon fine sandy loam, 1 to 6 percent slopes. This deep, well drained, nearly level to gently sloping soil 11 is on mesas, alluvial fans, and terraces. Elevation ranges from 5,000 to 6,500 feet. The soil formed in alluvium derived from sandstone and shale. The average annual precipitation is about 14 inches, the average annual air temperature is about 48 degrees F, and the average frost -free period is about 120 days. Typically, the surface layer is brown fine sandy loam about 5 inches thick. The subsoil is brown and yellowish brown sandy clay loam about 30 inches thick. The sub- stratum is very pale brown sandy clay loam to a depth of 60 inches. Included with this soil in mapping are small areas of Olney and Potts soils that have slopes of 1 to 6 percent. Permeability is moderate, and available water capacity is moderate. Effective rooting depth is 60 inches. Sur- face runoff is slow, and the erosion hazard is moderate. This soil is used mainly for irrigated crops, hay, and pasture. Some areas are used for grazing and wildlife habitat. This soil is irrigated mainly by corrugations. Sprinklers are also suitable. This soil erodes easily. Such practices as minimum tillage, grassed waterways, and tail water control reduce the danger of excessive erosion. Drop structures in irrigation ditches control water and prevent excessive ditch erosion. The native vegetation on this soil is mainly need- leandthread, wheatgrasses, and sagebrush. When range condition deteriorates, forbs and shrubs increase. When the range is in poor condition, undesira- ble weeds and annual plants are numerous. Properly managing grazing maintains and improves range condi- tion. Reducing brush also improves the range. Seeding improves range in poor condition. Pubescent wheat - grass, western wheatgrass, and big bluegrass are suit- able for seeding. Preparing a seedbed and drilling the seed are good practices. This soil has potential as habitat for pheasant, cotton- tail rabbit, mourning dove, and squirrel. These animals mostly obtain food and shelter in areas of crops and hay. This soil has few limitations for community develop- ment. Low strength and frost action affect structures and roads. Community sewage systems will be needed if the population density increases. This soil is in capability subclasses Ille, irrigated, and IVe, nonirrigated. 6—Ascalon fine sandy loam, 6 to 12 percent slopes. This deep, well drained, moderately sloping to rolling soil is on mesas, terraces, sides of valleys, and alluvial fans. Elevation ranges from 5,000 to 6,500 feet. The soil formed in alluvium derived from sandstone and shale. The average annual precipitation is about 14 inches, the average annual air temperature is about 48 degrees F, and the average frost -free period is about 120 days. Typically, the surface layer is brown fine sandy loam about 5 inches thick. The subsoil is brown and yellowish 1 1 1 1 1 1 1 1 26 Surface runoff is slow, and the erosion hazard is moder- ate. This soil is used mainly for crops, hay, and pasture. Alfalfa, small grains, and grass or grass -legume mixtures are grown. This soil is irrigated by flooding or furrows. Sprinklers are also suitable. Drop structures in ditches control water and prevent excessive ditch erosion. The native vegetation on this soil is mainly wheat - grasses, needleandthread, and sagebrush. When range condition deteriorates, forbs and shrubs increase. When the range is in poor condition, undesira- ble weeds and annual plants are numerous. Properly managing grazing maintains and improves range condi- tion. Reducing brush improves the range. Seeding im- proves range in poor condition. Crested wheatgrass, western wheatgrass, and Russian wildrye are suitable for seeding. Preparing a seedbed and drilling the seed are good practices. Cottontail rabbit, ground squirrel, and pheasant find habitat on this soil. Use of this soil for community development and as a source of construction material is limited by low strength. This soil is in capability subclasses IIle, irrigated, and IVc, nonirrigated. X41—Kim loam, 6 to 12 percent slopes. This deep, well drained, moderately sloping to rolling soil is on allu- 1vial fans and benches. Elevation ranges from 5,000 to 6,000 feet. This soil formed in alluvium derived from shale and sandstone. The average annual precipitation is about 12 inches, the average annual air temperature is Iabout 48 degrees F, and the average frost -free period is about 125 days. Typically, the surface layer is yellowish brown or light yellowish brown loam about 17 inches thick. The under- 'lying material is light brownish gray loam to a depth of 60 inches. In places the underlying material is stratified with fine sandy loam. Included with this soil in mapping are small areas of I percent. These areas make up 5 to 15 percent of the Arvada and Potts soils that have slopes of 6 to 12 map unit. Permeability is moderate, and available water capacity is high. Effective rooting depth is 60 inches or more. Surface runoff is slow, and the erosion hazard is moder- ate. 1 This soil is used mainly for crops, hay, and pasture. Alfalfa, small grains, and grass or grass -legume mixtures are grown. This soil is irrigated by flooding and furrows. Sprinklers Mare also suitable. Drop structures in irrigation ditches 'on1 water and prevent excessive ditch erosion. Keep - mg the soil in hay or pasture at least three-fourths of the mo helps to control erosion. The native vegetation needleandthread on this soil is mainly wheat- , and sagebrush. 1 1 SOIL SURVEY When range condition deteriorates, forbs and shrubs increase. When the range is in poor condition, undesira- ble weeds and annual plants are numerous. Properly managing grazing maintains and improves range condi- tion. Reducing brush improves the range. Seeding im- proves range in poor condition. Crested wheatgrass, western wheatgrass, and Russian wildrye are suitable for seeding. Preparing a seedbed and drilling the seed are good practices. Cottontail rabbit, ground squirrel, and pheasant find habitat on this soil. Use of this soil for community development and as a source of construction material is limited by low strength and steep slopes. This soil is in capability subclasses IVe, irrigated, and Vle, nonirrigated. 42—Lamphier loam, 15 to 50 percent slopes. This deep, well drained, steep soil is on fans and mountain- sides. Elevation ranges from 7,500 to 10,000 feet. This soil formed in residuum from sandstone and shale. The average annual precipitation is about 21 inches, the average annual air temperature is about 40 degrees F, and the frost -free period is less than 75 days. Typically, the surface layer is dark brown loam about 30 inches thick. The underlying material is reddish brown and dark reddish brown loam to a depth of 60 inches. Included with this soil in mapping are small areas of Almy soils and Rock outcrop. The Almy soils are at lower elevations. These areas make up 5 to 10 percent of the map unit. Permeability is moderate, and available water capacity is high. Effective rooting depth is 60 inches or more. Surface runoff is slow, and the erosion hazard is slight. This soil is used mainly for grazing, wildlife habitat, and recreation. The native vegetation is aspen and an understory of bromes, elk sedge, wildrye, wheatgrass, peavine, colum- bine, snowberry, serviceberry, and chokecherry. When the understory vegetation deteriorates, forbs, shrubs, and Kentucky bluegrass increase. Properly man- aging grazing maintains and improves the understory vegetation. This soil is suited to production of quaking aspen. It can produce 4,050 cubic feet of wood per acre or 6,800 board feet of timber from a fully stocked, even -aged stand of 80 -year-old trees. At the present there is no commercial harvest of the aspen. Steep slopes affect harvesting, and special attention is needed to reduce soil loss during harvest. Mule deer, elk, blue grouse, and snowshoe rabbit find habitat on this soil. Septic tank filter fields, community development, and roads are limited by steep slopes. Surface runoff from snowmelt increases the erosion hazard on cuts and fills. Seeding reduces the erosion hazard. Roads can be de- 1 1 1 1 1 1 1 1 1 1 1 1 1 32 55—Potts loam, 3 to 6 percent slopes. This deep, well drained, moderately sloping soil is on mesas, bench- es, and sides of valleys. Elevation ranges from 5,000 to 7,000 feet. This soil formed in alluvium derived from sandstone, shale, or basalt. The average annual precipi- tation is about 14 inches, the average annual air tem- perature is about 46 degrees F, and the average frost - free period is about 120 days. Typically, the surface layer is brown loam about 4 inches thick. The subsoil is reddish brown clay loam about 24 inches thick. The substratum is pinkish white loam to a depth of 60 inches. Included with this soil in mapping are small areas of Olney, Kim, and Ildefonso soils that have slopes of 3 to 6 percent. These areas make up 10 to 15 percent of the map unit. Permeability is moderate, and available water capacity is high. Effective rooting depth is 60 inches or more. Surface runoff is slow, and the erosion hazard is moder- ate. This soil is used mainly for irrigated crops and hay and for dryland farming (fig. 10). Alfalfa, small grains, and grass -legume hay are grown. Small areas are used for grazing. These soils are usually irrigated by flooding. Drop structures in irrigation ditches, grassed waterways, and minimum tillage prevent serious erosion. Irrigation water should be carefully managed to avoid piping and erosion. Cover crops or stubble mulching also help to limit ero- sion in dryfarmed areas. The native vegetation on this soil is mainly wheat - grass, needleandthread, and sagebrush. When range condition deteriorates, forbs and shrubs increase. When the range is in poor condition, undesira- ble weeds and annual plants are numerous. Properly managing grazing maintains and improves range condi- tion. Reducing brush improves the range. Seeding im- proves range in poor condition. Crested wheatgrass, western wheatgrass, and Russian wildrye are suitable for seeding. Preparing a seedbed and drilling the seed are good practices. Pheasant, mourning dove, cottontail rabbit, some mule deer, and squirrel find habitat on this soil. Community development and recreation are limited by low strength and the shrink -swell potential. Dwellings and roads can be designed to overcome these limita- tions. Community sewage systems will be needed if the population density increases. This soil is in capability subclasses Ille, irrigated, and •IVe, nonirrigated. 56—Potts loam, 6 to 12 percent slopes. This deep, well drained, moderately sloping to rolling soil is on I mesas, benches, and sides of valleys. Elevation ranges from 5,000 to 7,000 feet. This soil formed in alluvium derived from sandstone, shale, or basalt. The average annual precipitation is about 14 inches, the average 1 1 SOIL SURVEY annual air temperature is about 46 degrees F, and the average frost -free period is about 120 days. Typically, the surface layer is brown loam about 4 inches thick. The subsoil is reddish brown clay loam about 24 inches thick. The substratum is pinkish white loam to a depth of 60 inches. Included with this soil in mapping are small areas of Kim, Olney, and Ildefonso soils that have slopes of 6 to 12 percent. These areas make up 10 to 15 percent of the map unit. Permeability is moderate, and available water capacity is high. Effective rooting depth is 60 inches or more. Surface runoff is medium, and the erosion hazard is severe. This soil is used mainly for grazing, wildlife habitat, and some dryland farming (fig. 10). Wheat, barley, and oats are grown. Minimum contour tillage and stubble mulching help to prevent excessive erosion. The native vegetation on this soil is mainly wheat - grass, needleandthread, and sagebrush. When range condition deteriorates, forbs and shrubs increase. When the range is in poor condition, undesira- ble weeds and annual plants are numerous. Properly managing grazing improves and maintains range condi- tion. Reducing brush improves range. Seeding improves range in poor condition. Crested wheatgrass, western wheatgrass, and Russian wildrye are suitable for seed- ing. Preparing a seedbed and drilling the seed are good practices. Community development and recreation are limited by low strength, shrink -swell potential, and slope. Dwellings and roads can be designed to overcome these limita- tions. Community sewage systems will be needed if the population density increases. This soil is in capability subclass IVe, irrigated and nonirrigated. 57—Potts-Ildefonso complex, 3 to 12 percent slopes. These gently sloping to rolling soils are on mesas and sides of valleys. Elevation ranges from 5,000 to 6,500 feet. The Potts soil formed in alluvium derived from sandstone, shale, or basalt. The Ildefonso soil formed in very strongly calcareous, basaltic alluvium and small amounts of eolian material. The average annual precipitation is about 14 inches, the average annual air temperature is about 46 degrees F, and the average frost -free period is about 120 days. The Potts soil makes up about 60 percent of the map unit, and the Ildefonso soils makes up about 30 percent. The Potts soil is on slightly concave positions, and the Ildefonso soil is on the breaks of steeper slopes. The Potts soil is deep and well drained. Typically, the surface layer is brown loam about 4 inches thick. The subsoil is reddish brown clay loam about 24 inches thick. The substratum is pinkish white loam that extends to a depth of 60 inches. GEOTECHNICAL REPORT NOV-06-2001 12:55 H—P GEOTECH P.02/15 Gtech Hepworth•Pawl:Lk Geotechnleal, Inc. 5020 County Road 154 Glenwood Sprin , Colorado 81601 Phone: 970.945-7988 Fax: 970.9454454 hpgeo @ hpgeoteeh.com PRELIMINARY SUBSOIL, STUDY PROPOSED FOUR LOT SUBDIVISION NORTH OF COUNTY ROAD 259 NORTHEAST OF RIFLE GARFIELD COUNTY, COLORADO JOB NO. 100 442 OCTOBER 31, 2001 PREPARED FOR: TERRI PATRICK P.O. BOX 561 RIFLE, COLORADO 81650 Nov -06-2001 12:55 H -P GEOTECH P.03/15 HEPWORTH - PAWLAK GEOTECHNICAL, INC. October 31, 2001 Terri Patrick P.O. Box 561 Rifle, Colorado 81650 Job No. 100 442 Subject: Report Transmittal, Preliminary Subsoil Study, Proposed Four Lot Subdivision, North of County Road 259, Northeast of Rifle, Garfield County, Colorado. Dear Ms. Patrick: As requested, we have conducted a preliminary subsoil study for the proposed residential development at the subject site. Subsurface conditions encountered in the exploratory borings drilled in the general proposed building area consist of about 1/2 foot of topsoil and 51/2 to 92 feet of stiff to hard slightly sandy to sandy silty clay overlying stiff to very stiff and medium dense to dense clay and sand. Hard sandstone bedrock was encountered beneath the sand at depths of 12 and 36 feet in Borings 1 and 2, respectively. Groundwater was not encountered in the borings and the soils were slightly moist to moist. The natural clay subsoils appear to have an expansion potential when. wetted. Expansive clay soils require special designs to limit the risk of foundation and floor slab heave. Concentrated load on spread footings, structural floor slabs, drilled or driven piles and subexcavation of expansive clays are possible methods to mitigate the expansion potential. The report which follows describes our investigation, summar1Zes 0u,T Findings, and presents our recommendations suitable for planning and preliminary design. It is important that we provide consultation during design, and field services during construction to review and monitor the implementation of the geotechnical recommendations. If you have any questions regarding this report, please contact us. Sincerely, HEPWORTH - PAWLAK GEOTECHNICAL, INC. Jor., Z. A Re . by: 17 JZA/ksw on, Jr., P NOV-06-2001 12:55 H -P GEOTECH P.04/15 TABLE OF CONTENTS PURPOSE AND SCOPE OF STUDY 1 PROPOSED DEVELOPMENT 1 SITE CONDITIONS 1 FIELD EXPLORATION 2 SUBSURFACE CONDITIONS 2 PRELIMINARY DESIGN RECOMMENDATIONS 3 FOUNDATIONS 3 FLOOR SLABS 4 UNDERDRAIN SYSTEM 4 SURFACE DRAINAGE 4 LIMITATIONS 5 FIGURE 1 - LOCATION OF EXPLORATORY BORINGS FIGURE 2 - LOGS OF EXPLORATORY BORINGS FIGURE 3 - LEGEND AND NOTES FIGURES 4 & 5- SWELL -CONSOLIDATION TEST RESULTS TABLE I - SUMMARY OF LABORATORY TEST RESULTS H -P GEOTECH NOV-06-2001 12:56 H -P GEOTECH PURPOSE AND SCOPE OF STUDY P.e5'15 This report presents the results of a preliminary subsoil study for a proposed four lot subdivision to be located to the north of County Road 259, northeast of Rifle, in Garfield County, Colorado. The project site is shown on Fig. 1. The purpose of the study was to evaluate the subsurface conditions and their potential impact on the project. The study was conducted in accordance with our agreement for geotechnical engineering services to Terri Patrick, dated August 22, 2000. Hepworth - Pawlak Geotechnical, Inc., previously conducted a gamma radiation survey of the subject site and presented our findings in a letter dated June 9, 2000, Job No. 100 442. A field exploration program consisting of exploratory borings was conducted to obtain information on the subsurface conditions. Samples of the subsoils obtained during the field exploration were tested in the laboratory to detertnine their classification, compressibility or swell and other engineering characteristics. The results of the field exploration and laboratory testing were analyzed to develop recommendations for project planning and preliminary design. This report summarizes the data obtained during this study and presents our conclusions and recommendations based on the proposed development and subsurface conditions encountered. PROPOSED DEVELOPMENT The proposed development will consist of a four lot subdivision as shown on Fig. 1. Single family residences will be constructed on. each lot, The structures will likely be ane and two story wood frame structures over crawlspaces or with basement levels. The development will consist of single family homes. The development will be serviced with individual wells and septic disposal systems. If development plans change significantly from those described, we should be notified to re-evaluate the recommendations presented in this report. SITE CONDITIONS The proposed development consists of about 36 acres located at the north end of County Road 259 in Garfield County. Colorado. An existing single story manufactured H •P GEOTECH 1 NOV-06-2001 12:56 H -P GEOTECH P.06/15 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 residence is located in the western portion of Lot 4. The ground surface on the property is gently rolling with variable slopes from about 2% downhill to the south in the west central portion to 20% down to the north, south and west in Lot L An irrigation ditch meanders through the property as shown on Fig. 1. The property vegetation is dominated by sagebrush, grass and weeds with a few cottonwood trees along the ditch. HELD EXPLORATION The field exploration for the project was conducted on September 8, 2000. Two exploratory borings were drilled at the locations shown on Fig. 1 to evaluate the subsurface conditions. Access to the proposed building location on Lot 2 was not possible due to the steep sided irrigation ditch. The borings were advanced with 4 inch diameter continuous flight auger powered by a truck -mounted Longyear BK-511.ID drill rig. The borings were logged by a representative of Hepworth-Pawlak Geotechnical, Inc. Samples of the subsoils were taken with a 2 inch I.D. spoon sampler. The sampler was driven into the subsoils at various depths with blows from a 140 pound hammer falling 30 inches, This test is similar to the standard penetration test described by ASTM Method D-1586. The penetration resistance values are an indication of the relative density or consistency of the subsoils and hardness of the bedrock. Depths at which the samples were taken and the penetration resistance values are shown on the Logs of Exploratory Borings, Fig. 2. The samples were returned to our laboratory for review by the project engineer and testing. SUBSURFACE CONDITIONS Graphic logs of the subsurface conditions encountered at the site are shown on Fig. 2. The subsoils consist of about lh foot of topsoil and 51/2 to 91/2 feet of stiff to hard slightly sandy to sandy silty clay overlying stiff to very stiff and medium dense to dense clay and sand. I•Iard sandstone bedrock was encountered beneath the sand at depths of 12 and 36 feet in Borings 1 and 2, respectively. H -P GEOTGCH NOV-06-2001 12:56 H -P GEOTECH P.07/15 -3 Laboratory testing performed on samples obtained from the borings included natural moisture content and density, Atterberg limits and finer than sand size gradation analyses. Results of swell -consolidation testing performed on relatively undisturbed drive samples of the clay soils, presented on Figs. 4 and 5, generally indicate low compressibility under existing moisture conditions and light loading and a low to high expansion potential when wetted under a constant light surcharge. The sample from Boring 1 at 5 feet had no expansion. The laboratory testing is summarized in Table I. No free water was encountered in the borings at the time of drilling and the subsoils and bedrock materials were slightly moist to moist, PRELIMINARY DESIGN RECOMMENDATIONS It should be feasible to develop the project based on geotechnical considerations. The conclusions and recommendations presented below are based on the proposed development, subsurface conditions encountered in the exploratory borings, and our experience in the area. The recommendations are suitable for planning and preliminary design but site specific studies should be conducted for individual lot development. FOUNDATIONS Bearing conditions will vary depending on the specific location of the building on the property. Spread footings bearing on the natural clay and silt subsoils appear suitable with some risk of settlement/heave due to loading and wetting of the bearing soils. We expect the footings can be sized for an allowable bearing pressure in the range of 1,500 psf to 2,500 psf. Expansive clays encountered in building areas may need to be removed or the footings designed to impose a minimum dead load pressure to limit potential heave. Based on the expansion potential encountered, drilled or driven piles may be needed to limit or prevent heave and distress to the buildings. Foundation walls should be designed to span local anomalies and to resist lateral earth loadings when acting as retaining structures. Below grade areas and retaining walls should be protected from wetting and hydrostatic loading by use of an undcrdrain system. The footings should have a minimum depth of 36 inches for frost protection. H -P GEOTECH NOV-06-2001 12:57 H -P GEOTECH 4 P.08'15 FLOOR SLABS Slab -on -grade construction should be feasible for bearing on the natural soils. There could be some post construction slab movement at sites with collapsible matrix or expansive clays. A positive way to reduce the risk of slab movement, which is commonly used, is to construct structurally supported Boors over a crawlspace. To reduce the effects of some differential movement, floor slabs should be separated from all bearing walls and columns with expansion joints. Floor slab control joints should be used to reduce damage due to shrinkage cracking. A minimum 4 inch thick layer of free -draining gravel should underlie basement level slabs to facilitate drainage. UNDERDRAIN SYSTEM Although free water was not encountered in the exploratory borings, it has been our experience in the area and where there are stiff clays that local perched groundwater can develop during times of heavy precipitation or seasonal runoff. An underdrain system should be provided to protect below -grade construction, such as retaining walls and basement areas from wetting and hydrostatic pressure buildup. The drains should consist of drainpipe surrounded above the invert level with free -draining granular material. The drain should be placed at each level of excavation and at least 1 foot below lowest adjacent finish grade and sloped at a minimum 1% to a suitable gravity outlet. SURFACE DRAINAGE The grading plan for the subdivision should consider runoff from steep uphill slopes through the project and at individual sites. Water should not be allowed to pond which could impact foundations. To limit infiltration into the bearing soils next to buildings, exterior backfill should be well compacted and have a positive slope away from the building for a distance of 10 feet. Roof downspouts and drains should discharge well beyond the limits of all backfill and landscape irrigation should be restricted. H -P GEOTECH 1 1 1 1 1 1 1 1 1 1 1 1 NOV-06-2001 12:57 H—P GEOTECH 5 LIMITATIONS P.09/15 This study has been conducted according to generally accepted geotechnical engineering principles and practices in this area at this time. We make no warranty either expressed or implied. The conclusions and recommendations submitted in this report are based upon the data obtained from the exploratory borings located as shown on Fig. 1, the proposed type of construction and our experience in the area. Our findings include interpolation and extrapolation of the subsurface conditions identified at the exploratory borings and variations in the subsurface conditions may not become evident until excavation is performed. If conditions encountered during construction appear different from those described in this report, we should be notified so that re- evaluation of the recommendations may be made. This report has been prepared for the exclusive use by our client for planning and preliminary design purposes. We are not responsible for technical interpretations by others of our information. As the project evolves, we should provide continued consultation, conduct additional evaluations and review and monitor the implementation of our recommendations, Significant design changes may require additional analysis or modifications to the recommendations presented herein. We recommend on-site observation of excavations and foundation bearing strata and testing of structural fill by a representative of the geotechnical engineer. Sincerely, 1 1 Jordy Z. Adamson, . Reviewed by: ' G 1 HEPWORTH - PAWLAK GE 1 Daniel E. Hardin, P.E. JZA/ksw cc: Nigh Country Engineering - Attn: Joe Hope H • P GEOTECH NOV-06-2001 12:57 H -P GEOTECH P.10ii5 5720 r r 1 EXISTING • RESIDENCE LOT 4 PROPOSED BUILDING LOCATION (TYPICAL) EXISTING IRRIGA110N DITCHES LOT 3 EXISTING ROADS 5710 APPROXIMATE SCALE 1 200' 1 LOT- . BOUNDAR / 5720 r ' LOT 2 5700 /- / CpN}P . Y QnAn ass 100 442 HEPWORTH -- PAWLAK GEOTECHNICAL, INC. LOCATION OF EXPLORATORY BORINGS Fig. 1 NOV-05-2001 12:57 H -P GEOTECH P. 11/15 5 r -- m 20 1 11—.25 30 35 - -- 40 BORING 1 ELEV. = 5711' 1 11 BORING 2 ELEV. = 5705' 37/12 • 22/12 22/12 WC=7.s 00=105 45/12 WC=e.8 DDm111 50/10 31/12 WC=8,9 WC6.3 DD -121 D01.111 –200-58 LL=28 P1-12 10/12 WC8.2 00.0123 –200=57 70/3 12/12 Note Expicnation of symbols is shown on Fig. 3. 11/12 70/5 0 5 10—., 15- 20 ......... 25— .30 35- 40 ..._.a Depth — Feet 100 442 HEPWORTH - PAWLAK GEOTECHNICAL., INC. LOGS OF EXPLORATORY BORINGS Fig. 2 NOV-06-2001 /2:58 H -P GEOTECH P.12/15 LEGEND: • r i TOPSOIL; sandy silty cloy, organic, firm, slightly moist, dark brown. CLAY (CL); silty, slightly sandy to sandy, very stiff to hard, light brown. CLAY AND SAND (CL—SC); silty sand layers, medium dense to dense, alightly moist to moist, brown, stratified. SANDSTONE BEDROCiG; weathered and medium hard to hard, slightly moist, brown. Relatively undisturbed drive sample; 2—Inch I.D. California liner sample. 37/12 Drive sample blow count; indicates that 37 blows of a 140—pound hammer faflinkri 3r0 Inches- were required to drive the California sampler 12 inches. NOTES: 1. Exploratory borings were drilled on September 8, 2000 with a 4 --inch diameter continuous flight power auger. 2. Locations of exploratory borings were measured approximately by pacing from features shown on the site plan provided. 3. Elevations of exploratory borings were obtained by interpolation between contours on the site plan provided. Logs are drawn to depth. 4, The exploratory boring locations and elevations should be considered accurate only to the degree implied by the method used. 5. The lines between materials shown on the exploratory boring logs represent the approximate boundaries between material types and transitions may be gradual. 8. Water level readings shown on the logs were made at the time and under the conditions indicated. Fluctuation in water level moy occur with time. 6. No free water was encountered in the borings at the time of drilling. Fluctuation in water levsi may occur with time. 7. Laboratory Testing Results: WC = Wolter Content ( ) 00 a Dry Density ( pcf ) —200 = Percent passing No. 200 sieve. LL Liquid Limit (X ) PI a Plasticity index ( X ) 100 442 HEPWORTH -- PAWLAK GEOTECHNICAL, INC. LEGEND AND NOTES Fig. 3 NOV-06-2001 12:58 H -P GEOTECH P.13/15 Compression — Expansion % Moisture Content - 7.6 percent Dry Density = 105 pcf Sample of: Sandy Silty Cloy From: Boring 1 of 5 Feet No movement upon w ettin 0,1 1 0 10 APPLIED PRESSURE — ksf 100 Moisture Content = 8.8 percent Dry Density = 111 pcf Sample of: Sandy Clay From: Boring 2 at 5 Feet Expansian upon weitinq 0.1 10 10 APPLIED PRESSURE — ksf 100 100 442 HEPWORTH — PAWLAK G1;OTECHNICAL, INC. SWELL—CONSOLIDATION TEST RESULTS Fig, 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 NOL) -06-2001 12:58 H -P GEOTECH P.14/15 Moisture Content - 6.3 percent Dry Density — 111 pct Sample of Sdndy Silty day From; Boring 2 at 10 Feet l c w 111 ,)a w imigi 1 II m 4 Q �munnual�i uiiiiiiiiiiiiii_11111111 11111 Expansion upon wetting l II I II 11 111 11 11 11 11 1 1 1 I 11 II III I II II III I 0.1 1.0 10 100 APPLIED PRESSURE — ksf 100• 442 HEPWORTH — PAWLAK GEOTECHNICAL, INC. SWELL—CONSOLIDATION TEST RESULTS Rig, 5 EN NM I M MN M E M- E a- M E 1 M E w ME -4 HEPWORTH-PAWLAK GEOTECHNICAL, INC, TABLE I SUMMARY OF LABORATORY TEST RESULTS JOB NO. 100 442 1002-90-nON H031030 d -H -o l SAMPLE LOCATION NATURAL NATURAL OILY DENSITY [pcII GRADATION PERCENT ATT FELBERG LI WT& LLYCONEWED SOIL OR BEDROCK TYPE ROILING DEPTH Itaetl MOIST UDE CANTENT 11.) GRAVEL (Vol SAND Cll. I PA3S)NG NO. 200 SIEVE IIOEll D LIMIT Ii4I PLASTIC INDEX IliI COMPRESSIVE STRENGTH IPS f) 1 5 7.6 105 sandy silty clay 10 6.9 121 56 28 12 sandy clay } 2 2 8.8 111 sandy clay 111 10 6.3 111 sand silt clay Y Y 15 8.2 1 23 57 very sandy clay 1 ,} 1002-90-nON H031030 d -H -o RADIATION HAZARD REPORT JIRD -12-2000 10:25 H—P GEOTECH G&ech June 9, 2000 TA 1 "Dorrir.k Hepworth-Pawlak Geotechnical, Inc. 5920 Cuunty Road 134 Glenwood Springs, Colorado 81601 Phone: 970-94S-7988 Fax: 470-9434434 hpgeo@hpgeotech.com P.02/04 P.O. Box 561 Rifle, Colorado 81650 Job No. 100 442 Subject: Gamma Radiation Survey, Proposed 4 Lot Subdivision, North of County Road 259, Garfield County, Colorado. Dear Ms. Patrick: As requested, we have performed a radiation survey at the subject site. The findings and conclusions of our work are presented in this report. The study was conducted in accordance with our agreement for professional services to you, dated May 18, 2000, Proposed Development: We understand that a 4 lot residential subdivision is proposed on the property. The property covers about 36 acres. Single family residences will be constructed on each Iot. The structures will likely be one and two story wood frame structures over crawlspaces or basement levels. Site Conditions: The area of the proposed development is located at the north end of County Road 259 in Garfield County, Colorado. An irrigation ditch crosses through the property. The property is dominated by sagebrush with a few cottonwood trees along the ditch. The ground surface is gently rolling with slopes up to about 5%. Existing residences arc located in the northwest corner and southern portions of the property. Radiation Survey: A gamma radiation survey was conducted in the development area on May 30 and 31 and June 3, 2000. Gamma radiation measurements were taken on about 200 foot spacings using a Ludlum Model 3 survey meter and Ludlum Model 44-9 detector. The readings were taken about 21/2 feet above the ground surface. The survey points and readings are summarized on Fig. 1. The 56 readings ranged from 0.015 to 0.03 millirems per hour with an average of about 0.022 millirems per hour. Background readings at the south end of County Road 259 were 0.025 millirerns per hour. 6 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 JUN -12-2000 10:25 Terri Patrick June 9, 2000 Page 2 H -P GEOTECH P.03iO4 Conclusions: The gamma radiation readings taken at the subject site appear to be `• •' "" "l background levels in the area. No mitigation of the radiation should be required. If there are any questions or if we may be of further assistance, please let us know, Sincerely, HEPWORTH - PAWLAK GEOTECHNICAL, INC. �r�'0 ......1,...... i% `% .i , Jordy Z. Adamson, r.,'. / '2 , ', 29707E ii of • Rev, by: SLP • ly Fss •,,,,...,.,•�''a1 s %• JZAYksm attachment cc: High Country Engineering - Attn: Dan Dennison H -P GEOTECH 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 JUN -12-2000 10:26 H -P GEOTECH P.04/04 APPROXIMATE SCALE = 250' DITCH LEGEND PROPERTY EOUNDAR 6.025 RADIATION MEASUREME MILLIREMS PER HOUR T.02 .02 mr 25 .025 .025 .02 .03 .03 .025 • . .02 .02 .02 .02 .015 .02 .015 1 1 .02 .02 • •1 .025 .025 .03 .015 .02 .01 NT .02 .02 EXISTING .02 • • .02 .015 MODULAR HOME .02 .025 .015 c .025 .02 .02 • • .02 .025 .02 .02 .025 .03 .03 .02 02 025 02 02 025 02 02 015 025 .03 .025 COUNTY ROAD 259 100 442 HEPWORTH - PAWLAK GEOTECHNICAL INC. RADIATION SURVEY POINTS Flg. 1; TOTAL E?. 04