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RECEIVED <br />J &T Consulting, Inc. JUL 0 3 2013 <br />Division of Reclamation, <br />Mining & Safety <br />RECES�� - <br />July 3, 2013 JJ <br />Mr. Peter Hays DMSION OF RF"' -N <br />Environmental Protection Specialist MINING ANU on„ -i i <br />State of Colorado <br />Division of Reclamation, Mining, & Safety <br />1313 Sherman Street - Room 215 <br />Denver, CO 80203 <br />RE: Loloff Construction, Inc. - Loloff Pit - Technical Revision No. 1 Request <br />File No. M- 1985 -112 <br />Dear Mr. Hays, <br />Loloff Construction, Inc. requests a revision to their existing permit to address the following items: <br />1. Mining Methods: Revision of the method of mining to allow for dry mining by dewatering and <br />mining at a 3HAV slope. <br />2. Reclamation Plan: Revision to the reclamation plan to change the reclaimed slope to a 3HAV <br />slope. <br />No change to the affected land is being proposed with this revision. <br />Detailed descriptions of these revisions are in the following sections. <br />Minin_i Methods: Revision of the method of mining to include dry mining by dewatering and <br />mining at a 314:1 V slope. <br />This letter will serve as notice to the DRMS that Loloff Construction, Inc. will mine Phases 1 and 2 by <br />dry mining with dewatering at this time. The dry mining by dewatering is currently the method that Loloff <br />Construction, Inc. is using and they have an approved substitute water supply plan, and a well permit <br />has been applied for (Application Receipt No. 3660134). <br />The mining slope will be a 3HAV slope and per the DRMS requirements a slope stability study has <br />been provided because the mining will occur within 200 feet of the existing property line as well as <br />other manmade structures. Please refer to the attached slope stability report for the calculations and <br />cases where the slope stability model runs were completed for the Loloff Pit. <br />The equipment and facilities for the dry mining may include, but are not limited to the following: <br />Processing Eauioment <br />Screens, crusher, conveyors, stackers, and other miscellaneous processing <br />equipment. (The plant will be a portable setup.) <br />V 305 Denver Avenue - Suite D • Fort Lupton CO 80621 • Ph: 303 - 857 -6222 • Fax: 303 - 857 -6224 <br />