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0 2.05.6 Mitigation of the Impacts of Mining Operations <br />The flooded mine workings could also affect the ground water quality and <br />quantity in the overlying Upper and Lower Perched Water Zones. <br />However, Mesaverde Formation transmits little water. Therefore, the <br />impact the flooded mine workings will have on the quantity and quality of <br />the surrounding strata should be minor. <br />The perched water above the Cameo Seam is monitored by monitoring <br />well 7-34-7. The quality of water in this perched water being zone shows <br />pH in the range of 7.5 to 8.0, conductivity in the 550 to 3,330umhos/cm <br />range, total recoverable iron in the 0.01 to 0.15 mg/I range and <br />manganese in the 0.007 to 0.11 mg/I range. <br />The perched water below the Cameo Seam is monitored by monitoring <br />well 8-2-8. The quality of water in this perched water being zone shows <br />pH in the range of 6.9 to 7.1, conductivity in the 1,840 to 2,650umhos/cm <br />range, total recoverable iron in the 0.13 to 25.0 mg/I range and <br />0 manganese in the 0.35 to 0.51 mg/I range. <br />The water in the Cameo Seam is monitored by monitoring well 8-3-10. <br />The quality of water in this perched water being zone shows pH in the <br />range of 6.2 to 7.2, conductivity in the 1,476 to 6,100umhos/cm range, <br />total recoverable iron in the 8.8 to 143 mg/I range and manganese in the <br />0.48 to 2.88 mg/I range. The well has been basically dry during 2007 with <br />the sampler noting mud at total depth during August and November 2007. <br />It is unlikely the Cameo coal zone contains any significant water at this <br />location. Map 10, Water Bearing Zones, Mesaverde Formation, predicts' <br />virtually all of the Cameo seam in the permit area is dry. <br />Another indicator of the quality of water in the Cameo seam is monitoring <br />well F-50. The quality of water in the Cameo seam was monitored one <br />time in August 1983. Conductivity was 2,088 umhos/cm, ph was 8.3, total <br />iron was 11.0 mg/I and manganese was 0.448 mg/I. The coal seam is <br />saturated at this location. Monitoring well F-50 was sampled again in <br />March 2008. Conductivity was 2,300 umhos/cm, ph was 6.9, total iron <br />• was 0.55 mg/I and manganese was 0.284 mg/I. <br />Permit Application 2.05-104 06/08