Laserfiche WebLink
• 2.05.3 <br />(4) <br />(a) <br />Ponds, Impoundments and Diversions <br />There will be three sediment ponds constructed on the property. The ponds <br />will be named sediment ponds B, C and D. Sediment pond D will also be <br />referred to as the refuse pile sediment pond. The loadout will have two <br />sediment ponds. The ponds will be named sediment ponds J and K. <br />Sediment pond A was deleted from the design. <br />Sediment pond B was relocated below (south of) old State Highway 133 <br />during the construction of the downhill conveyor and highway coal stockpile. <br />It is designed to handle the run-off from B-Gulch. Pond B will be a typical <br />sediment pond, capable of containing the run-off from a 10-year event with <br />a spillway system designed to handle the peak flow generated by the 25-year <br />storm event. <br />Sediment pond C is located above (north of) the old Bowie railroad grade <br />and is designed to handle the run-off from C-Gulch. Pond C is a typical <br />. sediment pond, capable of containing the run-off from a 10-year event with <br />a spillway system designed to handle the peak flow generated by the 25-year <br />storm event. <br />Sediment pond D is the refuse pile sediment pond. It is designed to handle <br />the run-off from the entire refuse pile area. There is an upper diversion ditch <br />designed to divert run-off away from the top of the refuse pile. See Volume <br />4, Coal Mine Waste Bank Final Design for details of this sediment pond and <br />upper diversion ditch. <br />Sediment pond J is located below the topsoil and overburden stockpiles <br />south of the tracks. There is a berm/upper diversion ditch designed to divert <br />upland drainage away from the stockpiles. Pond J is a typical sediment <br />pond, capable of containing the run-off from a 10-year event with a spillway <br />system designed to handle the peak flow generated by the 25-year storm <br />event. <br />Sediment pond K collects run-off from the batch weigh loadout and <br />surrounding area. Pond K is a typical sediment pond, capable of containing <br />the run-off from a 10-year event with a spillway system designed to handle <br />the peak flow generated by the 25-year storm event. However, pond K is a <br />PR-06 2.05 - 28 - 12/01 <br />/~ PPRavED <br />~~! S~a z <br />