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Require- <br /> ment <br /> Require- complied <br />Requirement ment with ? (yes Comment <br /> citation / <br /> no/indetertn <br /> -irate <br />P. Timely filing CDMG <br />of pond regulation yes <br />r orts 4.05.6 13 <br />Q. Content of CDMG <br />pond reports regulation yes <br /> 4.05.6 13 <br /> The two remaining monitoring wells 17-B (upgradient from the <br />R Sampling Page 5-36 mine) and 95-1 (downgadient from the mine) were sampled more <br />frequency of of CDMG than the minimrmm required semi-animal frequency. (A third <br />ground water mining yes monitoring well, 94-1, was within the mined area and was <br />monitoring permit C- backfilled and reclaimed in 2002 during reclamation of the South <br />wells 92-080 Pit. <br />S. Paza- <br />meters Page 5-36 <br />to be of CDMG <br />an~~ <br />d in mining yes For the samples collected, all required parameters were analyzed. <br /> <br />ground permit C- <br /> 92-080 <br />water <br />sam les <br /> Should a~ degradation occur, the following two aquifers aze <br /> the most likely to be degaded by mining at Cazbon Junction: the <br /> Animas River alluvium (400 ft. downslope from the mine) and the <br /> Pictured Cliffs Sandstone (subcrops beneath the mine pit). <br /> Alluvial aquifers: Animas River alluvial water can be expected <br /> to have not been degaded by mining because the less than 50- <br /> acre surface area of spoil at the mine would not generate enough <br />T. Basic CWQCC leachate to overcome the ddutional effect of native alluvial gourd <br />Standazds for regulations <br />y~ water' <br />Bedrock aquifers: Downgadient monitoring well 95- I was <br />Ground <br />Water 41.4 and <br />41 <br />5 ~~ ~ 1/94 to total depth 350 ft. Although its perforated <br /> . depths were not documented, presumably it was perforated like <br /> reclaimed well 94-1 i.e. top to bottom The presumed perforated <br /> interval of well 95-1 extends through sandstone beds in the <br /> Fruitland formation and the Pictured Cliffs sandstone. The well is <br /> within the expected flowpath of a~ coal spoil leachate that <br /> would be generated in the Carbon Junction backfilled pits. Well <br /> 95-I has not shown evidence of leachate, and indicates <br /> w fiance with the Basic Standards at this location. <br />U. Restoration of <br />Bound water CDMG <br />rechazge to <br />h <br />es Cazbon Junction's approximate 100-acre surface disturbance <br />approximate 4 ~ 1 <br />~3) y probably is not enough to diminish recharge to aquifers. <br />premining <br />rate <br />Page 3 <br />