L.A. CLARKE & SON
On this page:
- What Is Being Done to Clean Up the Site?
- What Is the Current Site Status?
- EPA’s Involvement at the Site
- Operable Units (opens new page)
- Cleanup Progress (opens new page)
The 44-acre L.A. Clarke & Son site is located in Spotsylvania County, Virginia, about 4.5 miles southeast of Fredericksburg. A wood-treating facility operated on the site from 1937 until 1988, using creosote to preserve wood. From 1953 to 1975, facility operations included wastewater disposal in two concrete-lined pits, wastewater discharge to on-site drainage ditches and the spraying of wastewater on the ground to control dust.
What Is Being Done to Clean Up the Site?
The site is being addressed through state, federal and potentially responsible party (PRP) actions.
EPA has conducted several five-year reviews of the site’s remedy. These reviews ensure that the remedies put in place protect public health and the environment, and function as intended by site decision documents.
The most recent review concluded that the remedy is being implemented as designed. However, EPA deferred protectiveness of the remedy until additional information can be obtained through confirmatory sampling of floodplain, drainage ditch and Westvaco Pond sediments.
What Is the Current Site Status?
EPA plans to propose revising the exposure scenario for surface water since the original cleanup plan was changed from residential to industrial, and also plans to revise the soil cleanup level, utilizing an up-to-date scientific method.
Commonwealth Atlantic-Spotsylvania Inc. (CASI) is now the party responsible for fulfilling RF& P's obligations under the Consent Decree.
EPA is reviewing the cleanup levels for the contaminated soil so the levels are consistent with the future use of the site. Excavation and off-site disposal of contaminated sediments from the floodplain and the on-site ditches was completed in October 2001.
Dense non-aqueous phase liquids (DNAPLs) are present and may be mobile in the soils below both the process area, the former surface impoundment, and floodplain area north of Massaponax Creek. Sampling of the floodplain and on-site ditches in the summer of 2012 has shown that several areas have become re-contaminated.
Also performed in the summer of 2012 was an investigation indicating groundwater contamination is present on the south side of the creek. EPA anticipates selecting a ground water remedy in 2018.
The site’s long-term remedy includes excavation and biological treatment of some contaminated soil and sediment through landfarming; backfilling excavated areas; off-site disposal of contaminated wastewater and associated sludge; and groundwater monitoring. Remedy construction began in 1989, and is ongoing.
EPA’s Involvement at the Site
The U.S. Environmental Protection Agency is overseeing the cleanup of the L.A. Clarke & Son site where the wastewater impoundment was decommissioned in March 1997, including removal and off-site disposal of approximately 240,000 gallons of wastewater, approximately 153,000 gallons of emulsion and sludge, 172 tons of liner material, and 96 cubic yards of contaminated soil from underneath the impoundment liner.
A final cleanup decision for soils and sediments was reached between EPA and Virginia in March 1988. Shortly after, operations at the facility were terminated.
In July 1989, EPA and the Richmond, Fredericksburg, and Potomac (RF& P) Railroad entered into a Consent Decree to conduct the design and construction of the remedy. The cleanup decision was amended in December 1989 to reflect the planned demolition of the process buildings. Actual demolition was completed in 1993.
During cleanup, a site can be divided into a number of distinct areas depending on its complexity. These areas, called operable units (OUs), may address geographic areas, specific problems, or areas where a specific action is required. Examples of typical operable units include construction of a groundwater pump and treatment system or construction of a cap over a landfill.