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J. E. STOVER & ASSOCIATES <br />2768 COMPASS DRIVE, SUITE 101 <br />GRAND JUNCTION, COLORADO 81506 <br />PHONE: (970) 245-4101, FAX 242-7908 <br />MINE ENGINEERING <br />MINE RECLAMATION <br />November 20, 2000 <br />Dan T. Mathews <br />Division of Minerals and Geology <br />2148 Broadway, #C5 <br />Grand Junction, CO 81503 <br />Re: Powderhorn Coal Company <br />Permit C-81-041 <br />Revision Order TR-32 <br />Adequacy Response <br />Dear Mr. Mathews: <br />III IIIIIIIIIIIII III <br />999 <br />CIVIL ENGINEERING <br />CONST. MANAGEMENT <br />T'`-'-w: <br />~~ <br />~~ -~ ~\ < ` <br />,~,.~ <br />, <br />~`\ <br />ldpV ~ <br />2 1 ~ -` .~ <br />o,I, ~~. 0 <br />M~^, <br />F <br />.. 6,-q~C~gL JC,*,~~~OGY <br />The DMG's letter dated November 17, 2000, transmitted additional adequacy review <br />comments for the referenced technical revision. Following are PCC's responses to the <br />DMG's comments and concerns: <br />1. The first paragraph on page 14-14 was revised to incorporate the BLM's request for <br />culvert retention and their assumption of long term maintenance responsibility. The <br />BLM's letters dated June 27 and November 16, 2000 will be incorporated into <br />appendix 14-5. <br />2. Exhibit 53 was amended to show Cross Section J-J and correct the label on Cross <br />Section D-D. <br />3. Page 14-11 was revised to clarify the issues surrounding sampling of the soil to be <br />excavated from the CRDA-2 upper diversion ditch and placed as cover on the <br />refuse pile. <br />Pages 14-11, 14-14, Exhibit 53 and the BLM letters to be placed in appendix 14-5 are <br />enclosed. Please let me know if you have any questions. <br />Sincerely, <br />~~E<5~ `~-~- <br />' J. E. Stover, P.E. <br />Consulting Engineer <br />