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Carter RECEIVED <br /> Via Email and U.S. Mail MAY 2 5 2017 <br /> DMSION OF RECLAMATION <br /> May 22, 2017 MINING AND SAFETY <br /> Mr. Michael Cunningham <br /> Division of Reclamation, Mining & Safety <br /> 1313 Sherman Street, Room 215 <br /> Denver, CO 80203 <br /> Re: Schwartzwalder Mine, Permit No. M-1977-300 <br /> Water Quality Data and Mine Pool Level Measurements for March 2017 <br /> Dear Mr. Cunningham: <br /> Enclosed please find monthly water quality monitoring results and daily mine water level <br /> measurements for the month of March 2017. This submittal represents the continuation of routine <br /> monthly reporting of water quality monitoring results and daily mine pool elevations. A review of <br /> the data indicates that uranium concentrations at SW-BPL complied with the 30-µg/L limit. In <br /> addition, the arsenic concentration at SW-BPL was 1.5 µg/L. <br /> If you have any questions regarding this submittal, please contact me at 719-275-7413, ext. 202, or <br /> by email at steve.cohen@cotterusa.com. <br /> Sincerely, <br /> Stephen J. Cohen, PG <br /> Mill Manager <br /> Enclosures <br /> cc: Daniel Arnold, Esq. (Denver Water) <br /> Mike Harris (WQCD) <br /> Cotter Corporation Telephone (719) 275-7413 <br /> Canon City Mill, 1700 Fremont Co. Rd. 143, Canon City, CO 81212 USA Fax (719) 275-1669 <br />