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• Ash Monitor Well No. 2 (AMW-2) continues to show signs of recharge <br />since the A-Pit reclamation activities were concluded. This has been the <br />trend since the end of 1999 when the A-Pit reclamation was complete, but <br />only from 2004 forward has it resulted in volumes sufficient to allow <br />sampling. Adequate water volumes were found in this well during each of <br />the quarterly samplings for 2009, and made it possible to obtain samples <br />following the standard three well volume purge procedure. While the well <br />bore water level recovery following testing still remains slower, the ever <br />higher static water level provides evidence that the highly disturbed zone in <br />the reclaimed overburden area is recharging. The time line for this recharge <br />is consistent with previous 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". A "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 2 009 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 sl ow <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 somewhat 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 04108105, "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 />is to the site from the nearby Ennis Draw fluvial ground water system. Ground <br />AHR-2009 -36-