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cottei <br />VIA EMAIL AND U.S. MAIL <br />September 6, 2011 <br />)4r. Tony Waldron <br />'Mr. David Bird <br />Division of Reclamation, Mining & Safety <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />Re: Schwartzwalder Mine, Permit No. 4.977 -300 <br />of Technical Revision 18 — Request Adequacy Review o uest for Extension o Decision q <br />Dear Mr. Waldron and Mr. Bird: <br />Regarding the July 6, 2011 revised adequacy review of Technical Revision (TR) 18 from the <br />Division of Reclamation, Mining & Safety, Cotter Corporation (N.S.L.) respectfully requests a <br />30 -day extension of the due date for a decision on TR -18. Cotter has been diligently pursuing the <br />permitting to enable geotechnical studies that are necessary to develop final engineering design <br />details for the pipeline alignment, cutoff walls, and associated structures. As a result, certain <br />technical details that are relevant to a number of adequacy review comments are currently still under <br />development. <br />If you have any questions, please contact me at 719- 275 -7413 (ext. 202). <br />Sincerely, <br />John Hamrick <br />Vice President, Mill Operations <br />cc: Michael Harris, WQCD <br />Cotter Corporation 1 <br />Canon City Mill, P.O. Box 1750, Canon City, CO 81215 -1750 USA <br />ECG <br />EP R 7111i <br />Division of Reclamation, <br />+0 Mining artd &My <br />Telephone (719) 275 -7413 <br />Fax (719) 275 -1669 <br />