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/` bt'~ K AJttl <br />~S ~~ STATE OF COLORADO <br />OFFICE OF THE STATE ENGINEER <br />Division of Water Resources <br />Department of Natural Resources <br />1313 Sherman Street, Room 818 <br />Denver, Colorado 80203 <br />Phone (303) 866-3581 <br />FAX (303) 866-3589 AU9USt 16, 2006 <br />wvvw.water.state.co.us <br />Mr. Mark McLean, P.E. I <br />Deere & Ault Consultants Inc. <br />600 S. Airport Road, Building A, Suite 205 <br />Longmont, CO 80503 <br />op' cow <br />~~~% <br />N <br />f <br />~O~ <br />~ l876 ~ <br />Bill Owens <br />RECEIVEp Governor <br />Russell George <br />Executive Director <br />~~~ ~ ~ 2UU6 State ngin~n, P.E. <br />Division of Reclamation, <br />Mining and Safely <br />Re: Evans #2 Pit, 2 6-2007 Substitute Water Supply Plan Renewal <br />DMG File No~2000-041 <br />SE'/. Section 35, SWY. Section 36, T20S, R63W, 6th P.M., and <br />NW'/. Section 1, NE'/. Section 2, T21S, R63W, 6th P.M. <br />Water Division 2, Water District 14 <br />Expiration date: March 31, 2007 <br />Dear Mr. McLean: <br />We have reviewed your May 22, 2006 letter requesting renewal of the substitute water supply <br />plan in accordance with Senate Bill 89-120 for a sand and gravel pit previously operated by Stonewall <br />Springs Quarry, LLC/Money Companies. The required renewal fee of $217.00 has been paid. The <br />applicants shall be responsible for compliance with this plan, but the State Engineer's Office may <br />also pursue the landowner for eventual compliance. <br />PLAN OPERATION <br />This pit did not exist, and no ground water was exposed, prior to January 1, 1981. This plan <br />proposes to replace depletions to the Arkansas River that result from dry mining aggregate. There <br />will not be a wash water pond or concrete batch plant. <br />DEPLETIONS <br />Previous approvals were for dry mining, with the only water exposure consisting of <br />dewatering trenches (0.3 acres), a collection area (0.1 acres), and a return trench (0.1 acres). The <br />0.5 acres of exposed ground water will result in 1.77 acre-feet of evaporative loss (See Table 1). A <br />total of 15.33 acre-feet of water is expected to be consumed by 500,000 tons of aggregate mining <br />(14.72 acre-feet) and approximately 0.61 acre-feet used for dust suppression (See Table 2). Total <br />operations with evaporation will result in 17.09 acre-feet of consumptive use. Well permit no. <br />054064-F (ID 1406561) was obtained for this pit. <br />Your stream depletion analysis is also attached (See Table 3) providing a monthly distribution <br />of the steam depletion. You have calculated total stream depletions to be 16.13 acre-feet for the <br />April 1, 2006 through March 31, 2007-plan year. Post plan year depletions are projected to be 4.23 <br />acre-feet. <br />