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Seneca II W <br />AHR 2017 <br />Page 5 <br /> <br /> <br /> <br /> <br />Requirement Requirement citation Comment <br />13. Filing frequency of pond <br />reports <br />CDRMS regulation <br />4.05.9(17) <br />The sediment ponds associated with C1982057 <br />include 05, 06, 09, 015, 016 and 017. Quarterly <br />pond inspections were conducted in the appropriate <br />quarter. <br />14. Timely filing of pond <br />reports <br />CDRMS regulation <br />4.05.9(17) <br />Quarterly pond inspection reports were submitted and <br />received by the Division within an appropriate time <br />frame. <br />15. Content of pond reports CDRMS regulation <br />4.05.9(15) <br />All required information was addressed on quarterly <br />sediment pond inspections in water year 2017. <br />16. Sampling frequency of <br />ground water monitoring <br />wells <br />Tab 15, Appendix 15-3a, <br />Table 1 of CDRMS <br />mining permit C1982057 <br />Ground water samples are collected from <br />WHAL7-2, WOV14, WOV17, WOV25, WW14, <br />WW17, WW25, WSAL14, WSOV25, WSC25, <br />WWCOV25, WWC25, WWCU25, WTC201 and, <br />DCAL02 on an annual basis. <br />17. Parameters to be <br />analyzed in ground water <br />samples <br />Tab 15, , Appendix 15- <br />3a, Table 3 of <br />CDRMS mining permit <br />C1982057 <br />Parameters to be sampled are conductivity <br />(umhos/cm), pH (units), temperature (C), dissolved <br />fluoride (mg/l), dissolved iron (mg/l), dissolved <br />manganese (mg/l), dissolved nitrate (mg/l), dissolved <br />nitrite (mg/l), dissolved selenium (ug/l), dissolved <br />sulfate (mg/l) and total dissolved solids (mg/l). At <br />measured sites all parameters were met. <br /> <br />However, it appears that site WTC201 was only <br />monitored for TDS. <br /> <br /> <br /> <br /> <br />18. Basic Standards for <br />Ground Water <br />CWQCC regulations 41.4 <br />and 41.5 <br />Seneca IIW Mine did not generate significant amount of <br />leachates in 2017. Agricultural ground water standards <br />were exceeded this year at monitoring wells DCAL02 and <br />WHAL7-2 (iron and manganese), WOV14 (manganese), <br />WW14 (boron, iron field pH and manganese), <br />WWCOV25 and WWCU25 (field pH). <br />19. Restoration of ground <br />water recharge to <br />approximate pre-mining rate <br />CDRMS regulation <br />4.05.12(3) <br />For the 2017 water year, it appears that water levels at <br />all wells fell within their historic ranges. All alluvial <br />wells displayed seasonal water level fluctuations in <br />response to periods of precipitation recharge. <br />20. Prevention of adverse <br />impacts to ground water <br />systems outside permit area <br />CDRMS regulation <br />4.05.11(1) <br />Compliance with the Basic Standards for ground <br />water, as in item 10, indicates the permittee is <br />preventing adverse impacts to ground water quality <br />outside the permit area. <br /> <br />Monitoring data indicate the permittee is preventing <br />impacts to water quantity outside the permit area. <br />Hydrology reports indicate that water level at all wells <br />fell within their historic ranges. <br /> <br />All alluvial wells showed seasonal water level <br />fluctuations in response to periods of precipitation <br />or, lack thereof. Overburden and coal well water <br />