Remediation Activities:
The Reid Gardner Station (RGS) has a number of raw water storage ponds, process water evaporation ponds, and fly ash settling ponds. Process water, which has been used beyond the treatable limits, is routed to onsite ponds for evaporation. Waste management units are present throughout the Site and surrounding area. The Nevada Power Company has implemented source control methods including salt removal and pond lining on most of the ponds.
Interim remediation measures have been developed including construction and operation of a groundwater collection system south of Ponds D & E, and north of the mesa. Other long-term Corrective Action measures include a groundwater treatment system at Pond 4-A and a diesel recovery system that has been in operation since 1988 and upgraded in 2003. The diesel recovery system continues to operate in the eastern portion (power generation area) of the site recovering diesel and contaminated groundwater, which is traceable to the former operation of large onsite aboveground storage tanks.
Areas of known Releases of Environmental Contaminants from the station onto adjacent property include, but are not limited to, areas of Hogan Wash, property north of Pond 4A, property east of the power generation units, property north and east of waste management unit-4 (WMU-4 Mesa Landfill), and property south of WMU-4.
Environmental Contaminants identified at the RGS facility include, but are not limited to, elevated concentrations of total dissolved solids (TDS), sulfate, chloride, dissolved metals, volatile organic compounds (VOCs), and petroleum hydrocarbons.
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