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Requirement <br /> Requirement complied with? i <br />Requirement citation (yes / Comment i <br /> no/indeterm- <br /> inate ~i <br /> Alluvial well monitoring at Carbon Junction is not <br /> required. Bedrock ground water monitoring was <br /> eliminated in TR-13, based chiefly on a) historical <br />R. Sampling monitoring data from the wells indicating no <br />frequency of impacts from coal mining at Carbon Junction, b) <br />ground water N/A recognition that any coal spoil leachate generated by <br />monitoring and migrating from the relatively small (less than <br />wells 10-acre) pit area at Cazbon Junction would undergo <br /> significant attenuation and dispersion in the Animas <br /> River alluvium and Pictured Cliffs sandstone within <br /> a few hundred feet of the mine its. <br />S. Para- <br />meters <br />to be <br />analyze NIA yes <br />d in <br />ground <br />water <br />sam les <br /> Should any degradation occur, the following two <br /> aquifers are the most likely to be degraded by <br /> mining at Carbon Junction: the Animas River <br /> alluvium (400 ft. downslope from the mine) and the <br /> Pictured Cliffs Sandstone (subcrops beneath the <br /> mine pit). <br /> Alluvial aquifers: Animas River alluvial water can <br /> be expected to have not been degraded by mining <br /> because the less than 10-acre surface area of spoil at <br /> the mine would not generate enough leachate to <br />T. Basic CWQCC overcome the dilutional effect of native alluvial <br />Standards <br />regulations <br />Yes ground water. <br />for Ground <br />41.4 and 41.5 Bedrock aquifers: Downgradient monitoring well <br />Water 95-1 was drilled in l/94 to total depth 350 ft. <br /> Although its perforated depths aze unavailable, <br /> presumably it was perforated like reclaimed well <br /> 94-1 i.e. top to bottom. The presumed perforated <br /> interval of well 95-1 extends through sandstone <br /> beds in the Fruitland formation and the Pictured <br /> Cliffs sandstone. The well is within the expected <br /> flowpath of any coal spoil leachate that would be <br /> generated in the Carbon Junction backfiiled pits. <br /> Well 95-1 did not show evidence of leachate when <br /> it was monitored rior to 2006. <br />U. Restoration <br />of ground <br />water DRMS regulation Cazbon Junction's approximate 100-acre surface <br />rechazge to 4.05.11(3) yes disturbance probably is not enough to diminish <br />approximate recharge to aquifers. <br />premining <br />rate <br />Page 3 <br />