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~ STATE OF COLORADO`- -~r. ~~~ OFFICE OF THE STATE ENGINEER Division of Water Resources Department of Natural Resources 1313 Sherman Strael, Room 81 B Denver, Colorado 80203 Phone (303) 866-3581 FAX (303) 866-3589 http:/hvww.waterstate.w.us ~-~ Mr. Jeffrey A. Clark ` I~ BBA Water Consultants, Inc. 333 West Hampden Avenue, Suite 1050 Englewood, CO 80110 ~~ RECEIVED '•, ~ ,~ /AUG 0 7 2001 AugusC7, 2007 Division of tteciamatlon, Bill Ritter, Jr. Governor Mining and Safety Maxis D. Sherman Exewtive Director (Vacant) State Engineer RE: `Consolidated Substitute Water Supply Plan Valco Inc. Gravel Pits Canon City East M-77-559 Sec. 1 - T19S - R70W Rocky Fo-d East vM 77560 Sec. 21 - T23S - R58W Lamar East M-77-572 Sec. 29 - T22S - R46W Dear Mr. Clark: We have reviewed your May 4, 20071etter and the previous March 30, 2006 letter requesting renewal of the substitute water supply plan for the above referenced gravel pits owned by Valco Inc. The required $257 fee has been paid (transaction number 3616187). This approval will cover the period June 1, 2007 through May 31, 2009. The maximum ground water exposure that will occur during this plan at each pit has been revised since the August 10, 2006 approval letter, and those revised acres are as listed below. Total Pre-1981 Post-1980 Weil Well Exposure Exposure Exposure Pit Permit ID acres acres acres Canon City East 52183-F 1205760 30.1 15.4 14.7 Rocky Ford East 52017-F 1705986 47.3 17.4 29.9 Lamar East 52184-F 6706363 35.4 13.2 22.2 The maximum annual consumption that will occur during this plan at each pit is given below. The monthly distribution of the values, and the lagged affects on the Arkansas River, are detailed on your table which is attached. At the Canon City East pit pumping for batch plant uses is through well no. 22830-F (Well ID 1205640). At the Rocky Ford East pit pumping for batch plant uses is through well no. 10525-F (Well ID 1705985). Use of these wells for these purposes is covered by this plan. Batch Plant Material Total Evaporation Operations Washing Consumption Pit I~ a(__)f aj__)f a(~jf Canon City East 45.57 6.47 0.83 52.87 Rocky Ford East 118.52 1.92 0.47 120.92 Lamar East 92.21 0 0.44 92.65 It is anticipated the replacement water will be provided from 2 shares of the Rocky Ford Ditch which you have estimated yield 25.72 acre-feet annually, and from up to 250 acre-feet per year of consumable water obtained from the Pueblo Board of Water Works, for which Vak:o has a t 5 year lease (through June 15, 2013, extendable for one 10 year period). Valco has also obtained an allocation of 6.8 acre-feet of water from LAWMA associated with 8 LAWMA shares owned by Valco and 79 acre-feet of water associated with 79 Preferred LAWMA shares teased by Valco, which will be used for replacement at the Lamar East Pit. To the extent water is insufficient from the above sources, PBWW leased water will be delivered to make up the remaining depletion. Lastly, the applicant will use 25 shares of the Canon City and Oif Creek Ditch which you have estimated will yield of 38.34 acre-feet annually.