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COLORADO <br /> Division of Reclaftmtion, <br /> Mining and Safety <br /> 1313 Sherman Street, Room 215 <br /> Denver, CO 80203 <br /> Graham Roberts <br /> Trapper Mining Inc. <br /> P.O. Box 187 <br /> Craig, CO 81626 <br /> 14 August 2019 <br /> Re: Trapper Mine (Permit No. C1981-010) <br /> Review of 2019 Q2 Discharge Monitoring Reports <br /> Dear Mr. Roberts: <br /> The Division has received and reviewed Trapper Mines 2019 Q2 Discharge Monitoring Report <br /> (DMR) for the Trapper Mine. The report covers the period from April through June 2019. The <br /> Discharge Monitoring Report was received by the Division on 6 August 2019. <br /> Trapper submits the DMRs to the Division quarterly in accordance with Rule 4.05.13(2)(a)(iii). <br /> Trapper reported that three outfalls discharged during the quarter; outfalls 001, 002 and 011. <br /> Trapper reported that primary effluent limitations were exceeded at two outfalls during the quarter. <br /> 9 April 2019 samples showed exceedances of TS S and total iron at outfalls 011 and 020. These <br /> exceedances occurred in response to snowmelt or, precipitation events that increased snowmelt. <br /> Photo documentation provided with the submitted DMR report and DDRMS own site visits <br /> corroborate a heavy winter snowpack, persisting late into the spring of this year. TDS values for <br /> active outfalls were reported. Alternate limitation for settleable solids, applicable for discharge <br /> events caused by precipitation or snowmelt was met at all outfalls. No exceedances of primary <br /> effluent limitations for pH occurred during the quarter. <br /> All outfalls have been properly maintained and no ponds exceeded the 60%threshold for sediment <br /> accumulation. <br /> The Division does not have any questions or further comments at this time. If you have any <br /> questions or need additional information, please contact me. <br /> 1313 Sherman Street, Room 215, Denver, CO 80203 P 303.866.3567 F 303.832.8106 http: /mining.state.co.us <br /> Jared S. Polis, Governor Dan Gibbs, Executive Director Virginia Brannon, Director * . <br />