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<br />~~ <br />I• <br />2003 ANNUAL HYDROLOGY REPORT <br />YOAST MINE <br />Table of Contents <br /> P~ <br /> 1 <br />Introduction <br />Meteorological Data 2 <br /> 3 <br />Ground Water <br />Water Levels 3 <br />Alluvium 3 <br />Wadge Overburden 3 <br />Wadge Coal 3 <br />Wadge Underburden 4 <br />Wolf Creek Coal and Underburden 4 <br />Ground Water 4uality 4 <br />Alluvium 5 <br />Wadge Overburden 5 <br />Wadge Coal 5 <br />Wadge Underburden 6 <br />Wolf Creek Coal and Underburden 6 <br />Comparison of Ground Water Quality to Water Use Standards 6 <br />Ground Water Sv~ary S <br />Surface Water 9 <br />Sage Creek 10 <br />Site YSSF3 10 <br />NPDESI2 10 <br />NPDE513 11 <br />NPDESI4 11 <br />Site YSS2 10 <br />Grassy Creek/Annand Draw 11 <br />NPDESIO 11 <br />NPDESII 11 <br />Site YSGFS 11 <br />Site YSG5 12 <br />Springs 12 <br />Spring YSPG6 12 <br />Spring YSPG10 12 <br />Spoil Spring YSSPGI 12 <br />Comparison of Surface Water Quality to Water Use Standards 12 <br />NPDES Effluent Criteria 15 <br />Surface Water Summary 15 <br />References 16 <br />i <br />