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the end of 1999 when the A-Pit reclamation was complete, but only from <br />2004 forward has it resulted in volumes sufficient to allow some sampling. <br />Water was found in this well during each of the quarterly samplings for <br />2007, and during all of 2007 it was possible to obtain samples following the <br />standard three well volume purge procedure. While the well bore water <br />level recovery following testing still remains slow, the ever higher static <br />water level provides evidence that the highly disturbed zone in the <br />reclaimed overburden area is recharging. The timeline for this recharge is <br />consistent with earlier predictions. <br />Copies of the "executive summaries" of analytical laboratory test results are <br />available in the pages following this text. Each ground water monitoring <br />well was sampled in accordance with the "permit procedure". The "B" <br />designation following the well identification indicates that the laboratory <br />sample was obtained after initial field sampling, well purging and a <br />subsequent (second) field sampling. The 2007 ground water monitoring test <br />results remain consistent with the results from previous years in that there <br />have been no confirmed statistical exceedences, with but one exception, the <br />samples drawn from the SMW-2 well during 2004. The SMW-2 well was <br />completed in the disturbed spoil material which is being subjected to slow <br />re-saturation by groundwater, and appears to be leaching/dissolving <br />minerals as the water level rises. This has caused the manganese <br />concentrations to slightly exceed the calculated tolerance limit. CEC <br />addressed the tolerance limit exceedence with the CDPHE during 2005, and <br />was granted permission to continue the current detection monitoring <br />program. [Doty & Associates letter dated 04/08/05, "Alternate Source <br />Demonstration, Statistically Significant Increase over Background, <br />Manganese in SMW-2, Fourth Quarter 2004, Keenesburg Disposal <br />Facility".] <br />The direction of ground water flow, to the extent it has been documented in <br />the area of the Keenesburg Mine property, trends down-gradient to the <br />northeast. Recharge of the aquifer in the "spoil area" continues to be <br />limited to a single source, the localized infiltration of precipitation to the <br />subsurface. There is no evidence of any significant ground water recharge <br />to the site from the nearby Ennis Draw fluvial ground water system. Ground <br />water elevations in the sampled Ennis Draw wells close to the Keenesburg <br />Mine site remain significantly higher than in either the spoil monitoring <br />well (SMW-2) or the ash monitoring wells (AMW-1 and AMW-2). <br />AHR-2007 -50- <br />