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Seneca II W AHR 2019 <br /> Requirement Requirement citation Comment <br /> levels are fluctuating in response to precipitation <br /> recharge and ground water flow from the <br /> reclaimed mine pits. <br /> 21. Prevention of impacts to CDRMS No material damage has occurred, as discussed <br /> ground water that adversely regulation in item 20, above. <br /> impact post-mining land use 4.05.11(2) <br /> 22. Minimize disturbance to CDRMS The disturbance to the hydrologic balance within <br /> hydrologic balance within regulation and adjacent to the permit area caused by mining <br /> and adjacent to the permit 4.05.1(1) and reclamation at the Seneca IIW Mine is the <br /> area minimum that can be expected from a reclaimed <br /> surface mine at this location. The operators' use of <br /> best management practices indicates minimization <br /> of disturbance to the hydrologic balance. <br /> 23. Prevention of material CDRMS <br /> damage to the hydrologic regulation Surface Water: A prediction was made that <br /> balance outside the permit 4.05.1(1) increases in TDS would be observed at various <br /> area stream sites during the irrigation season (June- <br /> September). Predicted TDS values were exceeded <br /> at one site (WSSF3, 888 mg/1). The predicted <br /> value was 676 mg/l. In general TDS <br /> concentrations remained within the Seneca IIW <br /> predictions and within the historical range for the <br /> 2019 Water Year. <br /> Ground Water: In TAB 17 of the PAP, <br /> predictions were made as to the expected TDS <br /> increases to be observed at various monitoring <br /> wells. Predicted TDS values were exceeded at <br /> one of the seven wells(WOV 17, 6010 mg/1). The <br /> predicted value was 4295 mg/1. In general TDS <br /> concentrations remained within the Seneca IIW <br /> predictions and within the historical range. <br /> Spoil Springs: TDS values remained withing the <br /> historical range with the exception of an exceedance at <br /> WSSPG3,exhibiting the highest concentration on <br /> record for 2019. In three of the five springs TDS <br /> trends are increasing. <br /> No material damage has occurred, as discussed in <br /> item 20, above. Agricultural ground water standards <br /> were exceeded at six monitoring wells as per item <br /> 18 above. Baseline information shows several <br /> parameter concentrations in excess of both irrigation <br /> and livestock standards. <br /> 24. Agreement of observed CDRMS No local or regional impacts were identified in <br /> hydrologic impacts with regulation the AHR. This observation is consistent with the <br /> probable hydrologic 2.05.6(3) and PHC. <br /> consequences projected in requirement to <br /> the permit keep current, <br />