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Record of Decision System (RODS)



City & State:  RICHMOND  VA  23228
County:  HENRICO
EPA ID:  VAD071040752
EPA Region:  03
NPL Status:  Currently on the Final NPL
ROD Type:  Amendment
ROD ID:  EPA/AMD/R03-96/235
ROD Date:  08/27/1996
Operable Unit(s):  01
Media:  soil
Contaminant:  DNAPL
Abstract:  Please note that the text in this document summarizes the Record of Decision for the purposes of facilitating searching and retrieving key text on the ROD. It is not the officially approved abstract drafted by the EPA Regional offices. Once EPA Headquarters receives the official abstract, this text will be replaced.

The Rentokil, Inc. site is located at 3000 Peyton Street at the intersection of Peyton Street and Ackley Avenue in Henrico County, near Richmond, Virginia. The site is a former wood treating facility which ceased operating in January 1990. The land immediately surrounding the site is mostly open space/woodlands. Nearby development is comprised of light industrial, commercial, and low density residential. The site and surrounding land are presently zoned for light and general industry.

As part of the original remedial design, Rentokil, Inc. performed a value engineering analysis to evaluate the cost-effectiveness of the design. Groundwater modeling was performed as part of this analysis to evaluate the movement of the existing pentachlorophenol contaminated groundwater plume. This modeling demonstrated that, following construction of the contaminant system-cap and slurry wall, and operation of the dewatering system, contaminants in the soil will be effectively immobilized and will not move away from the contaminant area in the groundwater.

Construction of a Resource Conservation and Recovery Act (RCRA) cap over the area of the former wood treatment facility will effectively prevent precipitation from permeating through the soil. Finally, operation of the dewatering system will remove whatever groundwater is present under the cap.
Remedy:  This ROD Amendment revises the remedy previously selected by deleting the requirement for treatment of hot spots at the site. The principal threats associated with the hot spots are contaminated soils containing hazardous substances.

The amended remedy includes the following components: demolition of existing structures; removal of the unlined pond; drum disposal; soil consolidation prior to capping; construction of a multilayer cap, slurry wall, and dewatering system; sediment excavation and disposal; institutional controls; and groundwater monitoring.

The requirement for treatment of hot spots has been deleted because groundwater modeling demonstrates that, following construction of the cap and slurry wall and operation of the dewatering system, contaminants in the soil will be effectively immobilized and will not move away from the site in the groundwater. Therefore, treatment of hot spots is unnecessary.
Text:  View full-text ROD [ 31K ]
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