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David Berry <br />November 11, 2014 <br />Page 2 <br />that the water level in the mine will rise to a level consistent with pre- mining <br />conditions (above the top on the mine) independent from changes in the aquifer <br />caused by mining. <br />Summary of Future Expected Water Level Conditions <br />The following demonstrative cross section presents how water levels have changed in the <br />mine, how water levels will recover and how the changes in the mine will impact future <br />conditions. <br />West <br />MW-65 <br />Ground Surface MW -N/ <br />East <br />Recovered Potentiometric MW-23 <br />Surface � <br />Pre- mining Potentiometric <br />+r.•..+ Surface <br />4 <br />R I <br />Dewatered Potentiometric ! <br />Surface <br />� � U <br />Mined Area Expected Water Level <br />Recovery <br />Coal Scam <br />As presented in the diagram and discussion, the water level in the MW -NW well will rise <br />to a level consistent with the pre- mining water level conditions, although a slight change <br />in the slope of the water table within the mine itself may result from the high <br />permeability zone associated with the mine excavation. There is no reason to believe that <br />the water level in the MW -NW well will be restricted from rising above the top of the <br />coal seam and into the well casing. <br />Simply stated the water level in the mine (or dewatered "bath tub" area) will rise to a <br />level consistent with regional and pre- mining conditions which include levels above the <br />top of the mine area. <br />Response to Technical Statements in June 13, 2014 Letter <br />We agree that, prior to mining, the coal seam at the location of the MW -NW well <br />was confined and that after mining the coal seam is currently unconfined as a <br />www.bbawater.coni e Bishop - Brogden Associates, Inc. <br />