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~'~ G ~D <br />OF COLORADO <br />OFFICE OF THE STATE ENGINEER SFP ~ ~ PUO~ ~/ <br />Division of Water Resources <br />Department of Natuml Resources <br />13139herman Street, Room 818 .-:~.;,7(+rt(nerals&Geology R~Ioa~BSIe18ulWto uolsln!0 <br />Denver, Colorndo 80203 <br />Phone (303) 866-3581 Se to <br />FAX (303) 866-3589 p tuber 29, 2003 ~fl~Z ~ ~' d3S <br />vvww.water.srnte.m.us <br />Chris Weber __ Q~n~3~3:e <br />Bishop-Brogden Associates, Inc. _ <br />333 W. Hampden Ave., Suite 1050 / <br />Englewood, CO 80110 <br />RE: Consolidated Substitute Water Supply Plan for <br />Transit Mix Concrete Co. Gravel Pits <br />6 Pueblo West M-77-573 Secs 5 & 6, T21S, R65W <br />Secs 31 & 32 & 33, T20S, R65W <br />Pueblo East M-86-015 Secs 34 & 35, T20S, R64W <br />Dear Mr. Weber: <br />~Q pF Cpl <br />ye ' <br />• : <br />M~t <br />~ 1e96 ~ <br />Bill Owens <br />Governor <br />Greg E. Walther <br />Executive Direttor <br />Hal D. Simpson, P.E. <br />State Engineer <br />We have reviewed your November 6, 2002 and September 19, 2003 submittals <br />requesting renewal of the substitute water supply plans for the above referenced gravel pits <br />owned by Transit Mix Concrete Co. This approval will cover the period February 1, 2003 <br />through January 31, 2005. This year's plan is similar to the last year's, except that mining at the <br />Pueblo West pit is completed and mining at the Pueblo East pit is increasing. <br />below. <br />The maximum ground water exposure that will occur during this plan at each pit is given <br />Well Well <br />Pit ID # Permit <br />Pueblo West 1406220 44558-F <br />Pueblo East 1406186 58617-F <br />Total Pre-1981 Post-1980 <br />Exposure Exposure Exposure <br />acres acres acres <br />96.1 29.5 66.6 <br />12 -0- 12 <br />The maximum annual consumption that will occur during this plan at each pit is given <br />below. Site depletions consist of evaporation losses, pumping for concrete production (100% <br />loss), excavation of wet product and pumping for product washing (4% loss byproduct weight), <br />and pumping for truck clean-out (10% loss rate). The monthly distribution of the values, and the <br />lagged affects on the Arkansas River, are detailed on your Tables 1 and 3, which are attached. <br />Net Batch Plant Material Dust Total <br />Evaporation Operations Washing Control Consumption <br />Pit of a~f aj~f a~f of <br />Pueblo West 102.2 1.3 -0- 15.8 119.3 <br />Pueblo East 35.07 -0- 23.52 17.76 76.35 <br />Consumption at the Pueblo West pit is due to evaporation off of the remaining ponds, <br />batch plant operations, and dust control. Consumption at the Pueblo East pit will be due to <br />