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to approximate pre- <br />except for one well, YOV30. YOV30 <br />mining rates. <br />had its lowest year on record at a <br />value of 129.26 feet. <br />20. Prevention of adverse <br />CDRMS <br />The compliance with the Basic <br />impacts to <br />regulation4.05.1 1 (1) <br />Standards for Groundwater, Number <br />groundwater systems <br />10 above, shows that the permittee is <br />outside the permit <br />preventing adverse impacts to the <br />area. <br />groundwater quality outside the <br />permit area. The report indicates that <br />the water levels in the wells are <br />within historic ranges with the <br />exception of YOV30. The alluvial <br />wells show distinct seasonal <br />fluctuations in response to <br />precipitation events or the lack of <br />precipitation events. The overburden <br />and coal well levels show fluctuation <br />in response to precipitation recharge <br />and groundwater flow from the <br />reclaimed mine pits. <br />21. Prevention of impacts <br />CDRMS regulation <br />There has been no material damage at <br />to groundwater that <br />4.05.11(2) <br />the Yoast mine. <br />adversely impact <br />post - mining land use. <br />22. Minimize disturbance <br />CDRMS regulation <br />The disturbance to the hydrologic <br />to the hydrologic <br />4.05.1(1) <br />balance within and adjacent to the <br />balance within and <br />permit area caused by mining <br />adjacent to the permit <br />activities and reclamation is as <br />area. <br />minimal as can be expected at this <br />location. The use of best <br />management practices (BMPs) <br />indicates the minimization of <br />disturbance to the hydrologic balance. <br />23. Prevention of <br />CDRMS regulation <br />Surface water — Predictions were <br />material damage to <br />4.05.1(1) <br />made that various stream sites would <br />the hydrologic <br />show increased TDS values during <br />balance outside the <br />irrigation season (June- September). <br />permit area. <br />The TDS values were lower than the <br />predicted values for all four sites. <br />Groundwater — In Tab 17 of the Yoast <br />PAP, predictions for the TDS values <br />of groundwater sites was made. Five <br />of the seven sites exceeded these <br />predicted values in the 2014 water <br />year. YW30 had its peak value of <br />