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Water quantity was not affected by mining activities. One pond discharge occurred <br />during 2003 due to a late summer thunderstorm event. Minimal water was retained in <br />sediment ponds during other times of the year. Discharge from the disturbed area was <br />nearly non-existent. Coal bed methane (CBM) development and concurrent water <br />discharge influences the surface and ground water systems. Water quality does not <br />appear to be impacted by mining activities. A slight increase in total dissolved solids <br />(TDS) is noted on the Purgatoire River below the confluence with Lorencito Canyon <br />(160 mg/I upstream; 175 mg/I downstream). This increase is likely due to the higher <br />TDS in Lorencito Canyon water (750 mg/I). Mining activities did not contribute flow to <br />Lorencito Canyon in 2003 (see 2003 data for surface station JC-1). Generally, mining <br />and reclamation activities occur above the local water table and no impact to ground <br />water is predicted. <br />Review of the 2003 AHR resulted in the following questions. <br />For future reports, please include the elevations of the measuring point for each <br />well. Well levels are reported as feet below this measuring point. Data is plotted <br />by elevation above MSL, determined by the elevation of the measuring point. <br />The Division has no further questions at this time. Please respond to any above issues <br />as appropriate within 60 days. Thank you for conducting monitoring in accordance with <br />your approved plan. <br />Sincer y, ~1^~~ <br />Kent Gorham <br />Environmental Protection Specialist II <br />