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? 11 <br />00f tS e <br />Via Email and U.S. Mail <br />November 15, 2010 <br />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 80246-1530 <br /> <br />Subject: Sept em___bre- -21 0 Surface Water _Monitoring Dat? r Ralston Creek near the <br />chwS arkzwalder Mine; Quarterly Groundwater ata for Entire Third Quarter 2010; and <br />Stratified Mine Pool Data <br />References: CDPS Permit CO-0001244 <br />DBMS Permit M-1977-300 <br />DRMS Inspection Report Dated November 3. 2010 <br />Dear Mr. Harris: <br />Enclosed please find associated with the Schwartzwalder 1lrine site: (1) all surface water quality <br />monitoring results for the month of September 2010; (2) all quarterly groundwater monitoring data <br />collected for the third quarter of 2010; and (3) the results of the stratified mine pool sampling event. This <br />submittal represents continuation of routine monthly reporting of water monitoring results as previously <br />discussed with you and with D.R.MS. <br />Please note: that in accordance with your requested revisions to analytical reporting limits for several <br />parameters included in the water treatment discharge monitoring plan, we modified analytical reporting <br />limits for corresponding parameters across all segments of our overall water quality monitoring program <br />for consistency. These changes have been implemented beginning with samples collected in October <br />2010. <br />If you have any questions, please contact me at 719-275-7413 (ext. 202). <br />Sincerely, <br />Polin Hamrick <br />Vice President, Mill Operations <br />cc: David Bird (DRMS) <br />Edgar Ethington (CDPHE) <br />Daniel Arnold, Esq. (Denver Water) <br />Cotter Corporation <br />Canon City Mitl, RC. Box 1750, Canon City, CO 81215-1750 USA <br /> <br />Telephone (719) 275-7413 <br />Fax (719) 275-1669 <br />