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<br /> <br /> TABLE OF CONTENTS <br />' PAGE <br /> Maps ................................................... iv <br />' Figures ................................................ v <br /> Tables ................................................. vi <br />' S <br />ti <br />I - B <br />k <br />d <br />d I <br />i <br />d 1 <br /> ac <br />ec <br />on <br />groun <br />an <br />ntro <br />uct <br />on ................ <br /> Section II - Hydrologic <br />Description - Ground <br />' . <br />water (2.04.7(1)). 14 <br /> General Description ............................... 14 <br /> Geology ............. 14 <br /> Aquifers and Ground Water Use. 15 <br /> ......... ............... <br />Aquifer Characteristics.. 20 <br /> E Seam ....................................... 20 <br /> D Seam ............... 25 <br /> ........................ <br />Glacial Valley Fi11.. 29 <br /> Springs and Seeps ................................. 35 <br />' Section III - Hydrologic Description - Surface Water <br />(2.04.7(2)) ...... ................................... 36 <br />General Description ............................... 36 <br />Surface water Investigations ...................... 3G <br />Surface Water Quantity ............................ 37 <br />Surface Water Quality ............................. 38 <br />' Section IV - Protection of Hydrologic Balance <br /> (2.05.6(3)) .......................................... 39 <br /> Observations of Ground Water Interception - <br />' Red Canyon E Seam Mine............ .............. 39 <br /> Assumptions for Calculation of Ground Water <br /> Inflow and Drawdown ................... ...... 43 <br /> Mine Inflow Analysis - D and E Seam Operations.... 47 <br />' Inflow to Mains from Surrounding Coal <br /> Aquifer .................................... 47 <br /> Inflow to Mains adjacent to Subcrop to <br />' Glacial/Alluvial Aquifer ................... 52 <br /> Drawdown Analysis- D s E Seam Operations.......... 54 <br /> Drawdown Predicted for Surrounding Coal <br /> Aquifer .............................. ..... 55 <br /> Drawdown Predicted for Glacial/Alluvial <br /> Aquifer .... ........... ........... 58 <br /> Streamflow Depletion Associated with Mining.. <br />. 62 <br /> ;::: <br />Water Quality Effects During Mining.......... 65 <br /> Post-Mining Hydrologic and water Quality <br />' Conditions ...................................... 67 <br /> <br />ii <br /> <br />