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Mr. Paul Bruss Bishop - Brogden Associates, Inc. 333 West Hampden Ave., Ste 1050 Englewood, CO 80110 DEPARTMENT OF NATURAL RESOURCES DIVISION OF WATER RESOURCES February 13, 2013 RE: Transit Mix Conpiete Co. (Grisenti Farms) Pit DRMS File No.`M -2001 -005 Sec. 13, Twp. 19S, Rng. 69W, 6 P.M. Water Division 2, Water District 12 SWSP ID 4625 DEPLETIONS Approval Period: February 1, 2013 — January 31, 2015 Dear Mr. Bruss: -We have reviewed your November 2, 2012 renewal request for a substitute water supply plan ( "SSW SP'), in accordance with 37- 90- 137(11) C.R.S., for a gravel pit to be operated by the applicant, Transit Mix Concrete Company. The most recent SWSP approval letter was dated June 6, 2012 for a plan which is set to expire on January 31, 2013. The gravel pit is permitted with the Division of Reclamation, Mining, and Safety under File No. M- 2001 -005, and is permitted with the Division of Water Resources under Well Permit No. 61403 -F The required $257 fee for the SWSP renewal request has been received and processed under receipt no. 3657658. PLAN OPERATION Transit Mix has a lease agreement with the Grisenti's to mine sand and gravel from about 100 acres of land along the Arkansas River east of Florence. The completed Phase 1 mining operation covered 35 acres. The Phase 1 pit was filled with water by an administrative exchange during December 2009 resulting in a 23.3 acre pond whose surface is in equilibrium with the water table. The Phase 1 pond will serve as the settling pond for the Phase 2 operation that is currently underway. The attached Figure 1 shows the project phases. The depletions of this operation for the 2013 plan year (February 1, 2013 — January 31, 2014) consist of 102.88 acre -feet of net evaporative loss from the exposed ground water, 7.65 acre -feet of water removed via 260,000 tons of mined product (4% Toss by weight), and 5.0 acre - feet pumped for dust suppression. The area of exposed ground water from February 1, 2013 — January 31, 2014 is projected to be a maximum of 33.9 acres (consisting of a 23.3 acre pond in Phase 1, a 1.4 acre fresh water supply pond in Phase 2, and a 9.2 acre pond in Phase 2 that only exists when mining ceases and the dewatering pump is shut off). The depletions of this operation for the 2014 plan year (February 1, 2014 — January 31, 2015) consist of 118.06 acre -feet of net Office of the State Engineer 1313 Sherman Street, Suite 818 • Denver, CO 80203 • Phone: 303 -866 -3581 • Fax: 303- 866 -3589 http://water.state.co.us John W. Hickenlooper Governor Mike King Executive Di rector Dick Wolfe, P.E. Director /State Engineer RECEIVED k6B 15 2013 DivisioNoFRCIAMATION MINING MD SAFETY