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Yoast Mine AHR 2020 <br /> Requirement Requirement citation Comment <br /> 10. Interim Narrative CWQCC regulation 41 Monitoring comprises 10 wells. <br /> Standard for Ground Water <br /> It was determined that bedrock groundwater points <br /> of compliance are unwarranted at the Yoast Mine. <br /> Two groundwater points of compliance are <br /> established. <br /> Well SGAL70 serves as the Yoast Mine's Grassy <br /> Creek Alluvial ground water point of compliance and <br /> well YSAL3 serves as the alluvial ground water point <br /> of compliance for Sage Creek. <br /> No exceedances of standards occurred at YSA13 for <br /> the 2020 water year. SGAL70 exceeded the <br /> cadmium standard however the lab detection limit <br /> exceeded the cadmium water quality standard. <br /> 11. Sampling frequency at Tab 15,Table 15-9 of The report indicates that all frequencies were met. <br /> surface water CDRMS mining permit <br /> C 1994-082 <br /> 12. Parameters to be Tab 15,Table 15-4 and Parameters to be sampled are conductivity <br /> sampled at surface water 15-5 of CDRMS (umhos/cm),pH (units), temperature (C), total <br /> sites mining permit C-1994- recoverable iron (mg/I), dissolved manganese (mg/I), <br /> 082 total mercury (ug/1), dissolved nitrate (mg/1), dissolved <br /> nitrite (mg/I),total ammonia (mg/I), dissolved selenium <br /> (ug/1), dissolved sulfate (mg/1),total sulfide (mg/1),total <br /> suspended solids (mg/I) and total dissolved solids <br /> (mg/1). All required parameters were analyzed. All <br /> parameters were met. <br /> 13. Filing frequency of pond CDRMS regulation The sediment ponds associated with C 1994082 <br /> reports 4.05.9(17) include 010, 011, 011A, 012, 012A, 013, and 014. <br /> Quarterly pond inspections appear to have been <br /> conducted within the appropriate quarter. <br /> 14. Timely filing of pond CDRMS regulation Quarterly pond inspection reports were not submitted <br /> reports 4.05.9(17) and received by the Division within an appropriate <br /> time frame. <br /> 15. Content of pond reports CDRMS regulation DRMS is unable to determine that all required <br /> 4.05.9(15) information was addressed on quarterly sediment <br /> pond inspections in water year 2020 due to the <br /> intermittent submission of pond reports. <br /> 16. Sampling frequency of Tab 15,Table 15-8 of Ground water samples are collected from YSAL 1,YSAL3, <br /> ground water monitoring CDRMS mining permit YAAL14, YGAL16, YOV30, YW30, YWU30, YWC33, <br /> wells C 1994-082 YWCU33. <br /> 4 <br />