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The downgradient coal well GW -N37 shows an increase of TDS from approximately 2500 to 3000 <br />mg /liter in the pre -mine condition to 3000 -3500 mg /liter in the post mine condition. This is <br />expected since the spoil water is having some effect on the quality, as in the overburden well at <br />the same location. pH has shown a slight increase from approximately 7.6 to 7.8. <br />SL -14 03DEC12.wpd 71 <br />