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~ III IIIIIIIIIIIII III ~ ~G ~r~ OfFiCf OF 7Hf SiAiE ENGINEER Division of Water Resources Department of Natural Resources 1313 Sherman Street, Room 818 Denver, Colorado 80203 Phone: (3031 866-3581 FA);: (303) 866-3589 htrp l/water, state. co. us/deiaul t. htm Frank C. Healy Helton 8 Williamsen 384 Inverness Dr. South, #144 STATE OF COLORADO OF' Cpl (~ 4 N~~17 ~o ~ rB rb Bil I Owens Governor May 21 2171 t h E W G , RECEIVED reg . a er c Exe<wive Director Hal D. Simpson, P.E. 2001 MAY 2 2 $lale Engineer Englewood, CO 80112 Division of Minerals and Geology RE: Substitute Water Supply Plan for ~~ Midwestern Farms Resources Gravel Pi M-93-59 Water Division 2, Water District 67 Dear Mr. Healy: We have reviewed your April 2, 2001 letter requesting renewal of the Midwestern Farms Resources (Midwestern) gravel pit substitute water supply plan for the year May 1, 2001 through April 30, 2002. The required $217 fee has been paid. Well permit no, 53050-F is currently issued to the pit itself, and permit no. 54629-F was issued for use of an existing well as an alternate point of diversion for 53050-F that would be used to supply water for concrete batching, product needs and dust suppression purposes. The gravel pit is located in the SE '/, of the NW '/< and the NE '/< of the SW '/< of Sec. 18, T23S, R42W, 6th P.M. Groundwater is exposed in two pits with a maximum area of 28.5 acres. The estimated maximum net depletion from the gravel pit operation is 167.15 acre-feet per year. This level of annual depletion consists of 123.45 acre-feet of evaporative loss from 28.5 acres of ground water exposure, 23.54 acre-feet of water retained on the mined product, 12.48 acre-feet of water used in dust suppression, and 7.68 acre-feet of water used in concrete batching. A monthly breakdown of the estimated consumption is given on the attached Table 1. Also given on the table are the lagged depletions to the Arkansas River as both absolute amounts and as percentages of the concurrent consumption. In practice, monthly replacement water will be provided to the river based on a percentage of that month's actual consumption as determined from exposed water surface, weight of mined product, yards of concrete produced, and metered pumping for dust suppression. The proposed source of replacement water to cover this year's depletions comes from 208.9 acre-feet of consumable water purchased from Colorado Springs Utilities which is expected to cover depletions by the gravel pit operation plus a 25 percent allowance for evaporation, transit loss, and for storage losses. This 208.9 acre-feet is to be a portion of the water purchased by LAWMA for various post-1985 well users for which it administers substitute supply plans. This water will be delivered into the Offset Account in John Martin Reservoir.