Laserfiche WebLink
2-15A <br />• <br />Sedimentation Reservoir <br />A single sedimentation reservoir shall be constructed to handle <br />all affected surface runoff from the disturbed area (approximately <br />35.6 acres). Figures 2.3-3.15 and 2.2-3.25 show the location and <br />details of the sedimentation reservoir. Surface runoff shall be <br />collected from the coal stockpile area, parking lot office and <br />shop working area, wash plant and a minimum of the undisturbed <br />areas within the central facilities. The sedimentation reservoir <br />shall contain the volume of runoff from two 10-year, 24-hour <br />precipitation events and a total of five years of sediment. A <br />cleanout marker will be installed at the level at which sufficient <br />. storage capacity remains for both the runoff and the sediment <br />generated by the 10-year, 24-hour storm event. The level will be <br />calculated after the pond has been constructed and included in the <br />sediment pond certification document. <br />• <br />01/16/86 <br />