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J. E. STOVER & ASSOCIATES <br />III I IIIII I IIIIII III GRAND JUNCT ONDCOLORADO 81506 <br />999 PHONE: (970) 245-4101, FAX 242-7908 <br />MINE ENGINEERING <br />MINE RECLAMATION <br />June 27, 2001 <br />Dan Mathews <br />Division of Minerals and Geology <br />101 South 3`d Suite 3C <br />Grand Junction, CO 81501 <br />Re: Powderhorn Coal Company <br />2 West Portals Drainage Channel Certification <br />Permit C-81-041 <br />Dear Mr. Mathews: <br />CIVIL ENGINEERING <br />CONST. MANAGEMENT <br /> <br />JUN 2 7 2001 <br />~-~.~~ <br />Enclosed is a certification for the 2 west portals permanent drainage channel. This <br />certification is based on the assumption the DMG will approve the revised channel design <br />which reduces the required depth from 2-feet to 1.5-feet. <br />Please let me know if you have any questions. <br />Sincerely, <br />~~~ <br />J. E. Stover, P.E. <br />Consulting Engineer <br />