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TRgPPCR DINING INC. <br />October 9, 1991 <br />CERTIFIED #P782939303 <br />Mr. Kent Gorham <br />Colorado Mined Land Reclamation Division <br />215 Centennial Bldg. <br />1313 Sherman St <br />Denver, CO 80203 <br />Dear Kent: <br />Subject Minor Revision 114. Anfo Silo Construction in Enfield Pit <br />As previously discussed, Ttapper Mine is proposing to relocate the etdsting anfo s0o located along the <br />Derringer Pit haulroad ramp #2 to a location at the north end of Enfield Pit The relocation is necessary <br />since the eASting stlo is lopted within the proposed topsoil stripping limits of Derringer pit for 1992 The <br />anfo st7o will either be moved is the late fall of 1991 or early spring of 1992 and will encompass <br />approldmatety one acre. <br />There is no topsot7 disturbance associated with the new construction as the proposed site is located within a <br />previousy topsoil stripped area (spoil). The drainage from the proposed silo location u into Johnson Gulch <br />which has adequate sediment control structures constructed downstream of this site. <br />Section 3.8.1 "Support Facilities" page 3-183 of Trapper's petmit is revised to reflect the relocation of this <br />field ammonium nitrate silo. In the event a fuel storage tank is cons[ructed within the silo pad, adequate <br />contaminant berms will be installed to capture any potential release. The enclosed "Facilities" map (hf13-A <br />sheet 2 of 4) shows the etdsting and proposed aafo silo locations. <br />Kent, if you have any questions or concerns, please contact me. <br />SinceretyOO~~ <br />~if.C~L~d?/~ <br />William Agnew <br />Sr. Environmental Engineer <br />W b <br />f \o~] <br />Endcsute <br />c ].M 1Nattern <br />ED. Scbillie <br />W.S. Harding <br />B.D. Nicholson <br />Gle <br />P.O. Box 187 Craig, Colorado 81626 (303) 824-4401 <br />