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~•M'G~ STATE OF COLORADO OFFICE OF THE STATE ENGINEER Division of Water Resources Department of Na[ural Resources 1313 Sherman Street, Room 818 Denver, Colorado 80203 Phone (303) 866-3581 FAX (303) 866-3589 www.waterstate.m.us Ray Dunn Bishop-Brogden Associates, Inc. 333 W. Hampden Ave., Suite 1050 Englewood, CO 80110 February 25, 2002 RECEIVED FEB 2 6 2002 Oiuision of Minerals and Geology RE: Consolidated Substitute Water Supply Plan for Transit Mix Concrete Pits Pueblo Wet M-77-57 Secs 5 & 6, T21S, R65W Secs 31 & 32 & 33, T20S, R65W Pueblo Ea M-86-015 Secs 34 & 35, T20S, R64W Dear Mr. Dunn: pF' ~O~p r ~~ ~ ~9p O, ~. r- s 18'!6 ~ Bill Owens Governor Greg E. Walther Executive Direttor Hal D. Simpson, P.E. State Engineer We have reviewed your December 28, 2001 submittal requesting renewal of the substitute water supply plans for the above referenced gravel pits owned by Transit Mix Concrete Co. The required $217 fee has been paid. This approval will cover the period February 1, 2002 through January 31, 2003. This year's plan is similar to the last year's, except that mining at the Pueblo West Pit is expected to be completed by the end of May and the Pueblo East Pit, which had been inactive, is anticipated to begin mining operations in April. below. The maximum ground water exposure that will occur during this plan at each pit is given Total Pre-1981 Post-1980 Well Well Exposure Exposure Exposure Pit ID # Permit acres acres acres Pueblo West 1406220 44558-F 102.8 29.5 73.3 Pueblo East 1406186 45228-F 12 -0- 12 The maximum annual consumption that will occur during this plan at each pit is given below. Site depletions consist of evaporation losses, pumping for concrete production (100% loss), excavation of wet product and pumping for product washing (4% loss by product weight), and pumping for truck clean-out (10% loss rate). The monthly distribution of the values, and the lagged affects on the Arkansas River, are detailed on your Tables 1 and 3, which are attached. At the Pueblo West pit pumping for batch plant and material washing are through well nos. 1406303 (Permit 15980-F; through two totalizing flow meters), 1406304 (Permit 51316-F; through two totalizing flow meters) and 1406305 (Permit 51317-F; through two totalizing flow meters) and pumping for truck clean-out is through well no. 1406298 (Permit 51609-F; through two totalizing flow meters). Use of these wells for these purposes is covered by this plan. The only consumption at the Pueblo East Pit will be due to evaporation and water retained on product, with all hatching, truck washing, and dust control water to be provided from city water supply.