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t~~ <br />~ ~- STATE OF COLORADO <br />OFFICE OF THE STATE ENGINEER <br />Division of Water Resources <br />Department of Natural Resources <br />1373 Sherman Street, Room 616 <br />Denver, Colorado 80203 <br />Phone (303) 866-3581 <br />FAX (303) 866-3589 <br />http-.1)www.water. stale.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 />~UN 0 5 2001 <br />~-.. <br />pF'pp~ <br />I~Q' ~~Y,p\~! <br />NT. \$ <br />+~ ~~ ~~ <br />~ /8 ]6 ~ <br />Bill Ritter, Jr. <br />Governor <br />Division of Reclamation, <br />Mining and Safety <br />r <br />RE: Ft. Lupton Mine Sand & Gravel Operations Substitute Water Supply P/Ian <br />Division of Reclamation Mining and Safety number M-99-120 <br />Section 30, T2N, R66W, 6'" P. M. <br />Water Division 1. Water District 2 <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 />Hartis D. Sherman <br />Executlve Director <br />Hal D. Simpson, P.E. <br />Slate Engineer <br />We have received your letter of October 26, 2006, requesting a substitute water supply <br />plan, to cover depletions caused by the existing Ft. Lupton Sand & Gravel mine ("Ft. Lupton <br />Mine"), operated by L.G. Everist ("Applicant"). The required fee of $257.00 for the renewal of this <br />substitute supply plan has been submitted (receipt no. 3610689A). <br />Plan Operation <br />This plan seeks to replace depletions resulting from mining operations at the Ft. Lupton <br />mine. The depletions that result from the mining operation are evaporation, water lost in mined <br />product, concrete production and dust suppression. The applicant has bonded through the <br />Division of Reclamation Mining and Safety for final reclamation of the site. <br />The proposed replacement sources are 0.52 shares of Lupton Bottom Ditch, <br />augmentation credits from the Town of Milliken and nontributary Laramie-Fox Hills water <br />withdrawn from well no. 65060-F. <br />Portions of the mining site have been lined with a bentonite slurry walls. The liners were <br />approved by the Division Engineer on October 13, 2004 and January 29, 2007. Some mining <br />activities for 2007 will occur outside of the slurry walls, however, for this plan the depletions that <br />result from the retention of water in mined product and all open water surfaces inside and outside <br />of the slurry walls will be quantified and replaced under this plan. <br />There is an existing alluvial well, permit no. 57957-F, located outside of the approved <br />slurry wall which is permitted to provide water for concrete botching and dust suppression. The <br />depletions resulting from pumping the well, for those uses, will be replaced under this plan. <br />Dewatering at the Ft. Lupton Mine commenced in 1999. Dewatering will continue through <br />2007 and all dewatered water will be discharged directly back to the South Platte River. The <br />applicant's accounting specifies the depletions and accretions from the dewatering operation. <br />