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COLORADO <br /> a Division of Reclamation, <br /> Mining and Safety <br /> Department of Natural Resources <br /> 22 June 2022 <br /> Miranda Kawcak <br /> Moffat County Mining,LLC <br /> 29515 Routt County Road#27 <br /> Oak Creek,CO 80467 <br /> RE: Yoast Mine Permit; C1994082 <br /> Discharge Monitoring Reports(DMR's) DRMS Review 2022 Quarter 1 <br /> Dear Ms. Kawcak: <br /> The Division has received and reviewed the above referenced Discharge Monitoring Reports <br /> (DMRs), for the Yoast Mine. The DMRs were received by the Division on 5 May2022 as <br /> electronic submittals. The reports cover the time frame of January 2022 through March 2022 <br /> (Q1), for discharge monitoring as required by the discharge permit. <br /> Yoast Ponds sampled for DMRs comprise: Pond 10, Pond 12, Pond 13 and Pond 14. <br /> Seneca Properties should submit the DMRs to the Division, in accordance with Rule <br /> 4.05.13(2)(a)(iii), specifically within 30 days of sampling. The report submitted is in compliance <br /> with the applicable sections of the Rule. <br /> The outfalls discharging during this quarter comprised Pond 012, outfall 12A (Sage Creek), <br /> where minimum pH was exceeded. <br /> The Division has no further comments at this time. If you have any questions or need additional <br /> information, please contact me. <br /> Best Regards, <br /> Robin Reilley,M.S. GISP <br /> Environmental Protection Specialist II <br /> flF'�010 <br /> Physical: 1313 Sherman Street, Room 215, Denver, CO 80203 P 303.866.3567 F 303.832.8106 y� <br /> Mailing: DRMS Room 215, 1001 E 62nd Ave, Denver, CO 80216 https://drms.colorado.gov I ,r <br /> Jared S. Polis, Governor I Dan Gibbs, Executive Director I Virginia Brannon, Director <br /> 'f 1876�` <br />