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"A4- /f ! 3o o <br />0r <br />cotter <br />Via Email and U.S. Mail <br />/April 5, 2011 <br />-4 Colorado Department of Public Health and Environment <br />Water Quality Control Division / WQCD-B2-CAS <br />Compliance Assurance Section <br />Attention: Michael Harris <br />4300 Chevy Creek Drive South <br />Denver, CO 80246- l 530 <br />Subject: February 2011 Surface Water Monitoring Data for Ralston Creek Near the <br />Schwartzwalder Mine <br />References: CDPS Permit CO-0001244 <br />Dear Mr. Harris: <br />With respect to the Schwartzwalder Mine site, enclosed please find surface water quality <br />monitoring results and the daily mine water level measurements for the month of February <br />2011. This submittal represents continuation of routine monthly reporting of water monitoring <br />results as previously discussed with you and with the Division of Reclamation, Mining and <br />Safety. <br />If you have any questions, please contact me at 719-275-7413 (ext. 202). <br />Sincerely, <br />4 <br />s <br />(John S. Hamrick <br />Vice President, Mill Operations <br />cc: 'David Bird (DRMS) <br />Edgar Ethington (CDPHE) <br />Daniel Arnold, Esq. (Denver Water) <br />Cotter Corporation Telephone (719) 275-7413 <br />Canon City Mill, P.O. Box 1750, Canon City, CO 81215.1750 USA Fax (719) 275-1669