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<br />wells. The discontinuation of mining operations has eliminated pumping and dcwatcring of Pit #1 which <br />was anticipated to increase water levels in the down dip Wells 1, lA, 1B and 1C. <br />' Analysis of groundwater quality from the monitoring wells in the Pit #1 area indicated that the water <br />is of a sodium sulfate to sodium bicarbonate type with high sodium and sulfate concentrations. Well IB <br />is a sodium sulfate to sodium hydroxide type water. All analyses were generally consistent with previous <br />samplings. Analyses of metals for these wells are all within acceptable limits. Results of all water quality <br />analyses are presented in Appendix 1. Graphs for well water quality parameters of TDS, SAR, ammonia, <br />and pH are exhibited in Figures 2 through 5. <br />Well 7, located in the reclaimed area, was dry during the 1984 samplings, however, has had water since <br />then. Water level in Well 7 may indicate the development of a spoils aquifer which may be due to the <br />general increase of pit water in the adjacent up dip kerr surface mine and WFC's pit down dip of the well. <br />The water which was sampled indicates a sodium bicarbonate type. This water exhibits a better quality then <br />that sampled in the down dip wells and has a lower degree of ionization with lower TDS and metal <br />concentrations. <br />' NPDES SAMPLING <br />' Surface water runoff from the disturbed areas of the mine was passed through one of the three <br />sedimentation ponds prior to discharge. NPDES reports were filed with both the Water Pollution Control <br />Division of the Colorado Department of Health and CMLRD. Discharges were made only during the <br />snowmelt period of the second quarter (April-June). <br />1 <br /> <br /> <br /> <br /> <br />r I <br /> <br />1 <br />1 <br />1 <br /> <br />