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D~ OFFICE OF THE STATE ENGINEER Division of Water Resources Department of Natural Resources 1373 Sherman Street, Room 818 Denver, Colorado 80203 Phone (303) 866-3581 FAX (303) 866-3589 www.wa[erstate.co.us ~~ STATE OF COLORADO August 7, 2006 RECEIVED Frank C. Healy / ~~ ~ ~ 206 Helton & Williamsen v 384 Inverness Dr. South, #144 Division of Mnerela end DaolelY Englewood, CO 80112 RE: Substitute Water Supply P of n for Midwestern Farms Resources Gravel Pit, M-93-59 NE1/4 - NW1/4 Sec. 18, T23S, R42W, 6th P.M. Water Division 2, Water District 67 Expiration Date: April 30, 2007 Dear Mr. Healy: OF C(~ y~ ~~''' r ~ 1876 ~ Bill Owens Governor Russell George Enecutive Director Hal D. Simpson, 7.E. State Engineer We have reviewed your February 8, 2006 letter requesting renewal of the Midwestern Farms gravel pit substitute water supply plan. The required $217 fee has been paid. Well permit no. 53050-F (ID 6706369) is currently issued to the pit itself, and permit no. 54630-F (ID 6706369) was issued to allow the gravel pit to be used as an alternate point of diversion for permit no. 14171-R (ID 6705785) and permit no. 11177-F (6705786). Permit no. 54629-F (expired) was issued for the use of an existing well, permit no. 1.4171-R (ID 6705785), that would be used to supply concrete production and dust suppression needs. The estimated maximum net depletion from the pit is 317.81 acre-feet for this year's anticipated operation. This level of annual depletion consists of 273.215 acre-feet of evaporative loss from a pit area varying between 61 and 66.5 acres of ground water exposure, 23.54 acre-feet of water retained on the mined product, and 3.5 acre-feet of water used in dust suppression. No concrete botching is expected during this plan year. A monthly breakdown of the estimated consumption is given on the enclosed Attachment 6. 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, and metered pumping for dust suppression. The source of replacement water to cover this year's depletions will be leased from LAWMA (Midwestern Farms (471 shares), and 108 LAWMA shares leased from Delmar Holmes). This water will be delivered from excess credits developed by LAWMA's augmentation sources or from releases of Article II water in John Martin Reservoir.