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Dear Mr. McLean: <br />DEPLETIONS <br />REPLACEMENT <br />dm k <br />SWSP <br />DIVISION OF WATER RESOURCES <br />DEPARTMENT OF NATURAL RESOURCES <br />October 6, 2011 <br />Mark A. McLean, P.E. <br />4 ,0 Deere & Ault Consultants, Inc. <br />600 S. Airport Rd, Bldg. A, STE 205 <br />Longmont, CO 80503 <br />Re: Baxter Road Pit /Substitute Water Supply Plan ID # 2706 <br />DRMS File No. - 90 -106 <br />SE1 /4, Section 36, T20S, R64W, 6 P.M. <br />Approval Period: April 1, 2011 — March 31, 2012 <br />We have received your letter dated December 31, 2010 requesting renewal of a <br />substitute water supply plan for a sand and gravel pit operated by RBK Construction <br />(RBK). The applicant shall be responsible for compliance with this plan, but the State <br />Engineer's Office may also pursue the landowner for eventual compliance. The required <br />fee of $257 for the substitute water supply plan has been accepted as receipt no. <br />3648517. <br />PLAN OPERATION <br />No ground water was exposed in this pit prior to January 1, 1981. A 4 -acre pond <br />exits on the site and has well permit no. 57014 -F, Well Id. No. 1406563. No mining or <br />diversion of water for operations is anticipated for this plan year; however, this plan is <br />necessary to replace evaporation depletions. You have stated that the applicant may <br />resume mining of the site if additional replacement water can be obtained. This plan <br />must be amended before any other diversions of water occur or mining is resumed. <br />You have provided a table showing the net evaporation caused by the pit is <br />14.40 acre -feet. (See Table 1) The pit is approximately 500 feet from the Arkansas <br />River and causes lagged depletions. The lagged depletions are also shown on Table I <br />and amount to 14.16 acre -feet for this plan year. The attached Figure 1 shows the <br />location of this gravel pit. <br />Replacements will be provided by a 5 -year lease that commences on April 1, <br />2010 for 21 acre -feet annually of water that RBK has contracted with the Lower <br />' P ' <br />Office of the Sta e Engineer <br />1313 Sherman Street, Suite 818 • Denver, CO 80203 • Phone: 303 - 866 -3581 • Fax: 303 - 866 -3589 <br />www.water.state.co.us <br />John W. Hickenlooper <br />Governor <br />Mike King <br />Executive Director <br />Dick Wolfe, P.E. <br />Director /State Engineer <br />fr% mare fs- <br />1/OCT 0 7 2011 <br />Y>IiIISiJi; .o•il llaXloii 1, <br />Mining and Safety <br />