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r~ <br />~J <br />2.1 GROUND WATER-LEVEL CHANGES <br />The water-level changes for the period of record are presented on <br />figures in Appendix A. Depth to water and water level elevation are <br />tabulated in this appendix, also. Table A-1 in Appendix A presents <br />the water level data for wells GA 1, GA2, GB1, and GB2. Water-level <br />changes for well GA1, which is completed in the QR aquifer, are shown <br />on the hydrograph on Figure A-1 of Appendix A. The Q and R coal, seams <br />are presently being mined less than 1500 feet from this well to the <br />east and less than 3500 feet to the west. water levels were rising at <br />an average rate of three feet per year during 1986. Water levels have <br />declined at a higher rate in 1987 with the water level for November <br />• dropping approximately six feet in two months. <br />Water levels for well GA2 (see Figure A-2), which is completed in <br />the KLM aquifer, responded similarly in the last four years with a <br />water-level rise each spring followed by a decline for the remainder <br />of the year. The net result of the water-level changes in well GA2 <br />for the past year seem to be a slight decrease. <br />Well GB1 is completed in the sandstone below the I coal (RLM <br />aquifer) and is located at the base of the A pit, where the H and i <br />coal seams are mined. Mining occurred in this area during 1985. <br />Figure A-3 shows that water levels have continued to rise at a steady <br />rate during the last year except the last measurement. The November <br />• 1987 value is significantly lower. <br />2-3 <br />