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III IIIIIIIIIIIIIIII <br />sas <br />TRAPPER ~ININPr I1~C. <br />November ] 1,1942 <br />Kent Gorham <br />Office of Mined Land Reclamation <br />215 Centennial Building <br />1313 Sherman Street <br />Denver, CO 80203 <br />Dear Kent: <br />NOV 13 1992 <br />Dlvioi:,~..,, <br />MINERALS 8 GEOt~i;y <br />RE: Trapper Mine Response to the Preliminary Adequacy Review, <br />RM-02/PR-02 Trapper Mine, #C81-010. <br />Enclosed are Trapper's responses to two issues concerning our Permit Renewal Request. The <br />issues attached are 1) Analysis of the Flume Gulch Possible Alluvial Valley Floor (AVF), and 2) <br />Supporting data for the 1.4-inch 10-year, 24-hour and 1.8-inch, 25-year, 24-hour events for <br />snowmelt. <br />The Flume Gulch analysis is presented in a form that will be incorporated into our existing <br />permit if found acceptable by your office. Included are additions to the text for Sections 2.7.4, <br />4.8.4, and 4.8.5; new figures 2.7-38 through 2.7-4fi; new tables 2.7-39 through 2.7-41; and two <br />new maps (M58, M59). I've also attached references from Appendix H for your information. <br />The second part of this correspondence justifies the use of 1.4-inch, 10-year, 24-hour and 1.8- <br />inch, 25-year, 24-hour snowmelt data. Two pages of text and appendix supporting the text are <br />~` enclosed. When accepted by your office, this justification could be added to Appendix Q of <br />Trapper's Mining and Reclamation Permit. <br />Please contact Jim Mattern or me if you have any questions. The last remaining issue, Trapper's <br />Bond, will be addressed at a later date. <br />Sincerely, <br />~crii't ~ ~1P~t.cr°ic0~.~ <br />Larry Henderson <br />Sr. Environmental Engineer <br />LWN/mg/MLR ] t ] 0 <br />enc <br />c JM Mattern <br />file (2) <br />P.0. Box 187 Craig, Colorado 81626 (303) 824-4401 <br />