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Page 7 of 9 <br />Hydrology reports indicate that <br />mining has dropped the <br />potentiometric surface of the <br />Wadge overburden by <br />approximately 400feet in <br />undermined areas (well 93M001) <br />but not in areas beyond mining or <br />the permit area (well 008 - 7758.) <br />The steep decline in 93M001 was <br />exhibited from 1994 to 2002 with <br />the decline stabilizing from 2005 <br />to 201. The Twentymile <br />Sandstone water levels at well <br />006 - BRDH -7 remained relatively <br />constant with that of previous <br />years, with no mining impacts <br />apparent. Levels in well FBR -2 <br />dropped 56 feet in 2003 and <br />dropped another 84 feet in 2005 <br />which can be contributed to the <br />approaching 6 Right panel. In <br />2005 water levels began to <br />recover and continue through <br />2011. Pumping for mine use of <br />Trout Creek sandstone wells 001- <br />83 -106 and 001 -83 -107 is likely <br />the cause of a drop in the <br />potentiometric surface of the <br />Trout Creek sandstone at these <br />wells. There is a slight rising trend <br />from 2006 to 2011 at 001 -83 -106. <br />These drops are likely a local <br />impact due to the proximity of the <br />two wells near the Trout Creek <br />sandstone's up -dip outcrop belt. <br />Therefore, the impact would not <br />be expected to extend beyond the <br />permit area. This appears to be <br />the case as localized dewatering at <br />well 001 -83 -106 has stabilized in <br />2000 and continues to be stable <br />through 2011. A decline of water <br />level in well 001 -83 -107 continues <br />to be the trend in 2011. However <br />the decline appears to be more <br />subtle at the end of 2011. <br />21. Prevention of <br />CDRMS regulation <br />The Trout Creek Sandstone could <br />impacts to ground <br />4.05.11(2) <br />YES <br />supply the needs of the <br />water that adversely <br />postmining land uses of <br />