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COLORADO <br /> a Division of Reclamation, <br /> Mining and Safety <br /> Department of Natural Resources <br /> 15 December 2021 <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 years 2021,2020 and 2019 quarters: <br /> Dear Ms. Kawcak: <br /> The Division has received and reviewed the above referenced Discharge Monitoring Reports <br /> (DMRs), for the Yoast Mine. The DMR's were received by the Division on 8 December 2021 <br /> as electronic submittals. <br /> DMR's for years 2021, 2020 and 2019 were submitted as per Table 1,below. <br /> Table L• DMR's Submitted <br /> Year Quarter Date Year Quarter Date Year Quarter Date <br /> Submital Q4 Q4 8-Dec Q4 8-Dec <br /> Frequency: Q3 8-Dec Q3 8-Dec Q3 8-Dec <br /> DMR's 2021 Q2 8-Dec 2020 Q2 8-Dec 2019 Q2 8-Dec <br /> Q1 8-Dec Q1 8-Dec Q1 8-Dec <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 is in compliance with the <br /> applicable sections of the Rule. <br /> The outfalls that generally discharged comprised 12A (Sage Creek), and l0A (Grassy Creek), <br /> No primary effluent limitations were exceeded. <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 /> Best Regards, <br /> �J <br /> Robin Reilley,M.S. GISP <br /> Environmental Protection Specialist II <br /> flF'C010 <br /> 1313 Sherman Street, Room 215, Denver, CO 80203 P 303.866.3567 F 303.832.8106 https://drms.colorado.gov <br /> Jared S. Polis, Governor I Dan Gibbs, Executive Director I Virginia Brannon, Director * 1876 * <br />