RCRA Site Closure - Ferndale, Washington

is currently awaiting certification of a RCRA clean closure of two surface impoundments which previously contained oily process wastewater. A closure plan was negotiated with the Environmental Protection Agency and the Washington State Department of Ecology which provided for the in situ bioremediation of non-hazardous hydrocarbon-impacted soils. The remediation required excavation of soils which were subsequently spread on the basin floors for bioremediation. An active program of tilling and nutrient application enhanced the natural degradation of hydrocarbons. The project required complete delineation of hydrocarbon-impacted soils and the installation of an appropriate groundwater monitoring system.

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