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STATE OF COLORADO <br />DIVISION OF RECLAMATION, MINING AND SAFETY <br />Department of Natural Resources <br />1313 Sherman St., Room 215 <br />Denver, Colorado 80203 <br />Phone: (303) 866 -3567 <br />FAX: (303) 832 -8106 <br />March 30, 2012 <br />Troy Summers, Project Manager <br />WWC Engineering <br />611 Skyline Road <br />Laramie, WY 82070 <br />RE: Edna Mine, DRMS Permit C -80 -001 <br />Review of December 2011 DMRs for CDPHE Permit No. CO- 0032638 <br />Dear Mr. Summers: <br />COLORADO <br />D I V IS I ON OF <br />RECLAMATION <br />MINING <br />SAFETY <br />John W. Hickenlooper <br />Governor <br />Mike King <br />Executive Director <br />Loretta E. Pineda <br />Director <br />The Colorado Division of Reclamation, Mining and Safety (Division) has reviewed and found the above <br />referenced report to be in compliance with Rule 4.05.13(2). The Discharge Monitoring Reports were <br />received by the Division on January 18, 2012. <br />The reports cover the time period of December 2011. Two CDPS outfalls were monitored during this <br />period: Outfall 004 and Outfall 007. No exceedances of effluent limitations occurred during the <br />reporting period. Semi - annual testing for metals indicated no elevated levels that would be cause for <br />concern. Regarding the chronic Whole Effluent Toxicity (WET) tests, all reported values exceed 100 <br />percent for both test species, indicating that all tests passed, and toxicity of the effluent was not <br />problematic. <br />If you have any questions feel free to contact me at (303) 866 -3567, extension 8113. <br />Sincerely, <br />Robert D. Zuber, P.E. <br />Environmental Protection Specialist <br />Office of Office of <br />Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines <br />