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~~ STATE OF COLORADO <br />OFFICE OF THE STATE ENGINEER <br />Division of Water Resources <br />Department of Natural Resources <br />1313 Sherman Street, Room 818 <br />Denver, Colorado 80203 <br />Phone (303)866-3581 <br />FAX (303) 866-3589 <br />httpl/www.water. state.co. us <br />Mr. Forrest Leaf <br />Leaf Engineering, Inc. <br />P.O. Box 336714 <br />Greeley, CO 80633 <br />May 30, 2007 <br />RECEIVED <br />JUN 0 5 2001 <br />Division of Reclamatl0n, <br />Mining and Safety <br />pF' COQ <br />N`0 ~qY <br />., ~a <br />~ f~`~%.'r~'. <br />Bill Ritter, Jr. <br />Governor <br />Hams D. Sherman <br />ExecuUVe Director <br />Hal D. Simpson, P.E. <br />State Engineer <br />Re: Bernhardt Pit, Substitute Water Suppl Plan <br />Division of Reclamation Mining and Safety File No. M-2002-120 <br />Sections 1 and 12, T4N, R67W, 6t" P.M., Weld County <br />Water Division 1, Water District 2 and 4 <br />Approval Period: January 1, 2007 through December 31, 2007 <br />Contact phone number for Mr. Forrest Leaf: 970-351-0210 <br />Dear Mr. Leaf: <br />We have received your letter dated August 29, 2006, requesting renewal of the above <br />referenced substitute water supply plan to cover depletions caused by an existing gravel mining <br />operation operated by Hall-Irwin ("Applicant"). The required fee of $257.00 for the renewal of this <br />substitute water supply plan ("SWSP") has been submitted (receipt no. 3613573C). The original <br />supply plan was approved January 14, 2004 and the plan was most recently renewed on March 6, <br />2006. <br />Plan Operation <br />This plan seeks to replace depletions resulting from mining operations at the Bernhardt <br />pit. The depletions that result from the mining operation are evaporation, water lost in mined <br />product, concrete batching, dust suppression and dewatering. The proposed replacement <br />source is excess augmentation credits leased from the Town of Milliken. The leased water is <br />excess augmentation credits from Milliken's 2007 SWSP, associated with case no. 02CW339. <br />That plan is currently valid through December 31, 2007. <br />A portion of the mining site has been lined with a bentonite slurry wall. That liner has <br />not yet been approved by the Division Engineer, therefore the depletions calculated for this plan <br />assume that the liner does not exist. <br />An alluvial well has been constructed to provide water for concrete batching. This well <br />was constructed under permit no. 60729-F and is located outside the boundaries of the existing <br />slurry wall. The water withdrawn from the alluvial well is considered 100% consumptive. <br />