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<br /> <br />Requirement <br />Requin:-ment <br />oitatlcn Require- <br />ment <br />complied <br />with Z <br />es / no <br /> <br />Comment <br /> the land surface down into the 3` White appears to have <br /> occurred at well P-8 in East Pyeatt Gulch, but this seepage is <br /> expected to be of very limited areal extent compared to that <br /> expected in Flume Gulch where the pit area creating seepage <br /> will be several times larger, <br /> ~ Flume Gulch alluvium -Like the 3rd White, the Flume <br /> Gulch alluvium could be invaded by coal spoil leachate <br /> seeping down from the ground surface downslope from <br /> springs that are expected to form in the gulch. The Coy well <br /> is the ground water point of compliance for the Flume Gulch <br /> alluvium, as explained on page 4-242 of the permit <br /> ~ application. Data from the Coy well in 2006 indicate <br /> Trapper is in compliance with the Basic Standards for <br /> Ground Water for classification of Agricultural Use Quality <br /> for the Flume Gulch alluvium in a Specified Area underlain <br /> by saturated alluvium. <br /> Other Stratigraphic Units -Points of compliance for other <br /> stratigraphic units elsewhere on the mine are not warranted <br /> because they do not have the potential to be negatively <br /> impacted by mining at Trapper. <br /> Each pit disrupts the potentiometric surface. After <br /> reclamation, pits show full recovery of the potentiometric <br />S. Restoration of surface outside of backfilled pits and partial recovery of <br />ground water CDMG potentiometric surface inside backfilled pits. Spoil springs <br />recharge to regulation yes may reduce ground water recharge by diverting ground <br />approximate 4.05.1 l(3) ~ water flow to surface flow, but Trapper's expected total <br />premining rate ; aggregate spoil spring discharge of less than I cfs will be <br /> , <br />too small to reduce recharge below the approximate <br /> reminin rate. <br />Page 4 <br />