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(lee s, ~ ~ ,~ ~5 <br />~~~ <br />~onEa <br />august I, zoos <br />Steve Shucy <br />Colorado Division of Minerals and Geology <br />Grand Junction Field Office <br />lOt S. Third St, Rernn 301 <br />Grand Junction, Colorado 81501 <br />i i;~'~ L.d <br />AUG 2 9 2005 <br />r)ivisinn of f4~~-.-- , <br />RE: Permit No. iti1-1978-] l~ SM-18(Wright} Mv~e, Technical Revision <br />Mr. Shuey: <br />Cotter Corporation is submitting this technical revision, as requested in your inspection <br />report of 7-1-0_S, items #8 rind #12. <br />#8: The catchment basins for the containment of precipitation that falls directly on the <br />waste rock damp and ore stockpile area could not be constmct.,d as designed. This was <br />mainly due to encountering a hard layer before the target depth could be reached. The <br />"as 1>ui]Y' cortainment features and drainage patterns are shown on the enclosed map. <br />The combined capacity of the basins is adequate to contain ±he runoff of a 10 yr-24 hr <br />event, as calculated in Appendix B of the permit amendment. <br />#12: a concrete slab was poured for a floor in the skid-mounted temporary wnrpressor <br />building. This pad is about 12 feet wide by 20 feet long and m;;stly less than 6 inches <br />thick (approximately 4.5 yds). The `9eft-over" of the eonerere truckload was plact.~d as a <br />pad outside the northwest end of the building (sppreximately 0.5 yd), malting the total <br />slab about 5 yds. This stab eves not included in the plan for the temporary buildings at <br />this site. It was, therefore, nut included by DMG in reclamation costs for bonding <br />purposes. Cotter Corporation's plan for reclamation of this slab is to treat it like the other <br />compacted surface material in the portal area. That is, it wil? be hrol:en into small enough <br />pieces to incorparatc it into the waste rock pile prior to final reclamation of Chat waste <br />pile. <br />If you have fiarther questions regarding these issues, please call Glen \Villiams, Manager, <br />or Dick t~llite at Cotter's Nucla office, 970-864-7347. <br />pest ally/~ <br />Dr~ite, Project Geologist <br />Cotter Corporation <br />Cotter Corporation -West Slope Operations Telephone (970) 864-7347 <br />P.O. Box 700, 28151 DD Road, Nucla, CO 81424 USA Fax (970) 864-7287 <br />