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h~~ STATE OF COLORADO OFFICE OF THE STATE ENGINEER Division of Water Resources Department of Natural Resources 1313 Sherman Street, Room 878 Denver, Colorado 80203 Phone (303) 866-3181 FAX (303) 866-3589 www.waterstate.co.us April 19, 2005 RECEIVED Michelle M. Matthews ~' Deere & Ault Consultants Inc. APR 10 2005 P.O. Box 1300 Division ~f Minerals and GeotodY Fairplay, CO 80440 Re: Evans #2 Pit, Substitute Wa et'r Supply Plan Amendment and Renewal DMG Fite No. M-2000-041 +/ SE'/. Section 35, SWY. Section 36, T20S, R63W, 6th P.M., and NW'/. Section 1, NE'/. Section 2, T21S, R63W, 6th P.M. Water Division 2, Water District 14 Expiration date: March 31, 2006 Dear Ms. Matthews: oR' cow Ne.- ~~ • ~ r r s ~ /876 Bill Owens Governor Russell George Executive Director Hal D. Simpson, P.E. State Engineer We have reviewed your January 25, 2005 letter requesting renewal of the substitute water supply plan in accordance with Senate Bi1189-120 for a sand and gravel pit previously operated by Western Mobile Southern (WMS}, a subsidiary of Lafarge Corporation, now operated by Fremont Paving & Redi-Mix, Inc. The required renewal fee of $217.00 has been paid. The applicants shall be responsible for compliance with this plan, but the State Engineer's Office may also pursue the landowner for eventual compliance. PLAN OPERATION This pit did not exist, and no ground water was exposed, prior fo January 1, 1981. This plan proposes to replace depletions to the Arkansas River that result from dry mining aggregate. There will not be a wash water pond or concrete batch plant. DEPLETIONS Previous approvals were for dry mining, with the only water exposure consisting of dewatering trenches (0.3 acres), a collection area (0.1 acres), and a return trench (0.1 acres). This 0.5 acres of exposed ground water will result in 1.77 acre-feet of evaporative loss (See Table 1). A total of 9.84 acre-feet of water is expected to be consumed by 270,000 tons of aggregate mining (7.95 acre-feet) and approximately 1.89 acre-feet used for dust suppression (See Table 2}. Total operations with evaporation will result in 11.6 acre-feet of consumptive use. Well permit no. 054064-F (ID 1406561 }was obtained for this pif. Your stream depletion analysis is also attached (See Table 3) providing a monthly distribution of the steam depletion, You have calculated total stream depletions to be 9.85 acre- feetfor the April 1, 2005 through March 31, 2006-plan year. Post plan year depletions are projected to be 3.24 acre-feet.