2010-11-19_PERMIT FILE - C1980007 (30)

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INTRODUCTION Shepherd Miller, Inc. (SMI) submits this design report to Mountain Coal Company describing proposed environmental improvements to be made at the West Elk Mine train loadout facility. The facility is located across from the mine on the north side of State Highway 133, adjacent to the North Fork of the Gunnison River. The hydraulically operated, over - the -track type train loadout facility has been in operation for approximately 14 years. A surge bin at the facility receives coal conveyed from storage silos located across the highway from the train loadout facility. The coal is transferred from the surge bin to a weigh hopper. The measured quantity of coal is then dropped into a railcar via a chute. Recently, diethylene glycol has been used to spray on the coal and the inside of the railcars to prevent freezing during shipment. The diethylene glycol is stored in tanks located southwest of the loadout facility. A sediment pond is located adjacent to and east of the facility. The sediment pond was constructed to contain stormwater runoff from the facility site washdown water from cleaning o ty g the facility, and any spills of hydraulic oil or diethylene glycol occurring at the facility. Water collected in the pond is pumped and hauled off site to one of the other sediment ponds located at the mine. The pond is designed to drain to the North Fork of the Gunnison River during overflow conditions. Planned coal production growth and environmental concerns prompted Mountain Coal Company to initiate various improvements at the train loadout facility. This report presents the design of improvements addressing: • stormwater and washdown water management • hydraulic oil containment • diethylene glycol storage and containment. West Elk Mine Train Loadout Environmental Improvements Shepherd Miller, Inc. p:V 1 -407Veportlreport.doc 1 July 1997 (Revised April 1998)