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Peabody Sage Creek Mine - Drainage and Sediment Control Plan <br />TABLE OF CONTENTS <br />Section <br />Page No. <br />1.0 <br />INTRODUCTION <br />2.05.3 -E2.1 <br />1.1 <br />Operations Drainage and Sediment Control <br />2.05.3 -E2.2 <br />1.2 <br />Postmine Drainage Control <br />2.05.3 -E2.4 <br />2.0 <br />DESIGN METHODOLOGY AND ASSUMPTIONS <br />2.05.3 -E2.5 <br />2.1 <br />Hydrologic Calculations <br />2.05.3 -E2.6 <br />2.1.1 Precipitation Distribution <br />2.05.3 -E2.6 <br />2.1.2 Storm Duration/Return Period/Precipitation Amount <br />2.05.3 -E2.6 <br />2.1.3 Hydrograph Response Shape <br />2.05.3 -E2.6 <br />2.1.4 Watershed Area <br />2.05.3 -E2.7 <br />2.1.5 Time of Concentration <br />2.05.3 -E2.7 <br />2.1.6 Muskingum Routing Parameters <br />2.05.3 -E2.7 <br />2.1.7 Curve Number <br />2.05.3 -E2.7 <br />2.2 <br />Sedimentation Calculations <br />2.05.3 -E2.7 <br />2.2.1 Rainfall Factor <br />2.05.3 -E2.8 <br />2.2.2 Soil Erodibility Factor <br />2.05.3 -E2.8 <br />2.2.3 Length -Slope Factor <br />2.05.3 -E2.9 <br />2.2.4 Control Factor <br />2.05.3 -E2.9 <br />2.2.5 Practice Factor <br />2.05.3 -E2.9 <br />2.2.6 Sediment Particle Distribution <br />2.05.3 -E2.9 <br />3.0 <br />POND DESIGNS <br />2.05.3 -E2.9 <br />4.0 <br />DITCH AND CULVERT DESIGNS <br />2.05.3 -E2.11 <br />4.1 <br />Haul Road Ditches <br />2.05.3 -E2.11 <br />4.2 <br />Runoff Ditches and Postmine Channels <br />2.05.3 -E2.11 <br />4.2.1 Earthen Channel Design <br />2.05.3 -E2.15 <br />4.2.2 Vegetated Channel Design <br />2.05.3 -E2.15 <br />4.2.3 Rock Riprap Design <br />2.05.3 -E2.19 <br />4.2.4 Turf Reinforcement Mat Design <br />2.05.3 -E2.19 <br />4.3 <br />Culverts <br />2.05.3 -E2.21 <br />5.0 <br />STOCK TANK DESIGNS <br />2.05.3 -E2.21 <br />6.0 <br />SMALL AREA EXEMPTIONS <br />2.05.3 -E2.24 <br />7.0 <br />REFERENCES <br />2.05.3 -E2.25 <br />LIST OF TABLES <br />Table No. Description <br />Page No. <br />2.05.3 -E2 -1 <br />Curve Number Values <br />2.05.3 -E2 -8 <br />2.05.3 -E2 -2 <br />Soil Erodibility Factor Values <br />2.05.3 -E2 -8 <br />2.05.3 -E2 -3 <br />Control Factor Values <br />2.05.3 -E2 -9 <br />2.05.3 -E2 -4 <br />Index of Pond Design/As -Built Demonstrations and Drawings <br />2.05.3 -E2.10 <br />TR -01 2.05.3 -E2.i 04/12 <br />