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fanxay 2002 Sensra IIiY/Soutb Expamrion * Dmdnage artdSsdunmt Control Plan ~ Page 1 <br />• TABLE OF CONTENTS <br />Section No. Page No. <br />1.0 1NTRODUCTION ............................................................................................................................. 1 <br />2.0 HYDROLOGIC CALCULATIONS ...........................................................».....................»............ 2 <br />2.1 PRECIPITATION DISTRIBUTION ............................................................... ........................................... 2 <br />2.2 STORM DORA7'fON ................................................................................ ........................................... 2 <br />2.3 RETURN PERIOD/PREC[PITATTON .......................................................... ............................................ 2 <br />2.4 HYDROGRAPH RESPONSE SFIAPE .......................................................... ............................................ 2 <br />2.5 DRAIIJAOE BasIN AREA ........................................................................ ........................................... 3 <br />2.6 TIME OF CONCENTRATION, T~ .............................................................. ............................................ 3 <br />2.7 MUSKINOUM RDtJTINO PARAMETERS, K, X ......................................... ............................................ 3 <br />2.8 CURVE NUMBER, CN ........................................................................... ............................................3 <br />3.0 SEDIMENTATION CALCULATIONS ................................................................. <br />3.1 RAINFALL FACTOR, R .............................................................................................. <br />3.2 SOIL ERODIearrY FACTOR, K .................................................................................. <br />3.3 LENGTH-SLOPE FACTOR, LS .................................................................................... <br />3.4 CONTROL FACroR, C ............................................................................................... <br />3.5 PRACTICE FACroR, P ............................................................................................... <br />3.6 SEDIMENT PARTICLE DISTRIBUTION ......................................................................... <br />4.0 PONDS ...............................................................................................................................................6 <br />5.0 HAUL ROAD CHANNEL AND CULVERT DESIGNS ............................................................... 8 <br />6.0 POST MINING CHANNELS .._ ...................................................................................................... 9 <br />7.0 REFERENCES ................................................................................................................................10 <br />LIST OF TABLES <br />Table No. Deacri lion Page No. <br />1 Seneca IIW (South Expansion Area) Curve Number <br />2 Soil Erodibility Factor ..................................................... <br />Control Factor ........................................................................................................................ 5 <br />Practice Factor ........................................................................................................................ 5 <br />Seneca IIW (South Expansion) Sediment Pond Summary .............................................. 7 <br />LIST OF APPENDICES <br />Appendix. DeacriRtion <br />1 Sediment Pond SEDCAD Results <br />2 Haul Road Channel and Culvert Design <br />3 Post Mining Channel Designs <br />• 4 Stability Analyses <br />PR-0S Revised 4/06 <br />MIP/H * 165 S. Union Borlevard, Snip 410 * Lnksnaad, Caleroda 80228 * (970) 763-5140 <br />A.wnl l/f2d <br />