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cotter <br />Via Email and U.S. Mail <br />April 9, 2013 <br />Colorado Department of Public Health and Environment <br />Water Quality Control Division / WQCD- B2- C'AS <br />Compliance Assurance Section <br />Attention: Michael Harris <br />4300 Cherry Creek Drive South <br />Denver. CO 80246- 1.530 <br />Subject: March 2013 Surface Water Monitoring Data for Sampling Stations SW -AWD <br />and FW 1 on Ralston Creek at the Schwart; waldcr Mine <br />References: Paragraph 26, Vt /QCD Notice of Violation /Cease and Desist Order, Number: <br />1 f 1- 100601.1, June 1, 201 0 <br />Dear Mr. Harris: <br />Per Paragraph 26 of die. above referenced Order, please find enclosed data reports from Energy <br />Laboratories as rcccived by Potter Corporation (N.S.L.) for surface water sampling conducted <br />in March 2013 at monitoring stations SW -AW'D and SV \i -BPI., at the Schwartzwalder Mine <br />If you have any questions, please contact me at 719-275-7413 (ext. 2'02). <br />Sincerely. <br />John S. Hamrick <br />Vice President, Mill Operations <br />Enclosures <br />cc: Daniel J. Arnold. F q, (Denver Water) <br />Tom Kaldenbach (DBMS) <br />Cotter Corporation <br />Canon City Mill, P.O Box 1750, Canon City, CO 81215 -1750 USA <br />'[I) / 11 -7'7__3 0 "' <br />Beec ` <br />ED <br />APR 1 2413 <br />`!vw <br />ISI pNcF <br />MINING AND S AFE �N <br />Telephone (719) 275 -7413 <br />Fax (719) 275 -1669 <br />