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<br />TRAPPER 1RINING INC. <br />~II ~I~~I~II~~~~~II~ <br />999 <br />October Is, 199~F(~~IVED <br />Mr. Joseph J. Dudash <br />Environmental Protection Specialist <br />Colorado Division of Minerals & Geology <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />OCf 1$1996 <br />Ri.isinn HI M~ngra~p u Gnalr)gv <br />Re: Trapper Mining Inc., Permit No. C-R1-010 <br />Dour Basins & Stock Ponds Permit Revision, Technical Revision TR-73 <br />Dear Mr. Dudash: <br />Enclosed are two copies of new or revised permit pages i-13, ii-12, 3-155, 4-223 and 4-223a. <br />Page 4-223a includes new Figure 4.R-7. Also enclosed are two topics of Trapper Mine stock <br />ponds certification and modeling infomation and a revised TR-70 annual report map--Livestock <br />Ponds and Dozer Basins. These pages, the figure and the map are being revised and/or added to <br />accomodate the incorporation of new permit Section 4.8.1.7 and the inclusion of stock pond <br />ceRification/modeling infotmation into Appendix Q. Upon approval of this revision, this <br />infom3ation should be incorporated into the permit document. <br />Section 4.8.1.7 discusses the use of Dozer Basins at Trapper Mine and is submitted to satisfy <br />DMG and OSM permitting requirements. The permitting approach to this technical revision <br />generally follows OSM Western Support Center's "Technical interpretation of Dozer Basins," <br />dated August 8, 1997, as you requested in your letter of September l7, L996. <br />Stock pond certification and SEDCAD modeling information is presented as new Section XXIX <br />to Appendix Q. Permit page 3-155 is revised to reference the Appendix Q stock pond <br />information. <br />Please contact me iC you have any questions or concerns. <br />Sincerely, <br />~y/~ (//: <br />Forrest Luke <br />Environmental Manager <br />FVL <br />Idozbascl.docl <br />Encl <br />c John Husband, nLM, w/enc <br />File 109.2.3.4, w/enc <br />Revisions noreboal4 w/enc <br />P.O. Box 187 Craig, Colorado 81626 (303) 824-4401 <br />