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TABLE OF CONTENTS <br />• PAGE <br />GENERAL GEOLOGY 1 <br />Stratigraphy and Structure 1 <br />Coal Geology 4 <br />GENERAL HYDROLOGY 5 <br />Groundwater Systems 5 <br />Surface Water Systems 6 <br />GEOLOGY OF PIT 1 - FEDERAL COAL LEASE NO. C-27931 <br />STRATIGRAPHY, STRUCTURES AND COAL GEOLOGY 7 <br />Coal Analyses 11 <br />Overburden Characteristics 11 <br />Physical Properties 13 <br />Texture 13 <br />Porosity and Permeability 13 <br />Erodability 14 <br />Swell and Compaction 14 <br />Chemical Properties 14 <br />• pH <br />Electrical Conductivity, E.C. 16 <br />16 <br />Saturation Percent, SAT 16 <br />Sodium Absorption Ratio, SAR 23 <br />Cation Exchange Capacity, CEC 23 <br />Exchangeable Sodium Percentage, ESP 24 <br />Lime, CaCO3 24 <br />Boron, B 24 <br />Nitrate-Nitrogen NO3-N 24 <br />GEOLOGY OF PIT 2 - FEDERAL COAL LEASE N0. C-30169 <br />STRATIGRAPHY, STRUCTURE AND COAL GEOLOGY 25 <br />OVERBURDEN CHARACTERISTICS 31 <br />Methodology 31 <br />Physical Properties 33 <br />Texture 33 <br />Porosity and Permeability 33 <br />Erodability 35 <br />Swell and Compaction 35 <br />Chemical Properties 35 <br />pH 36 <br />Conductivity 46 <br />Sodium Absorption Ratio 46 <br />Lime <br />Boron 4i <br />47 <br />Selenium 47 <br />Nitrate-Nitrogen 48 <br />