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Record of Decision System (RODS)



Site Name:  ABEX CORP.
City & State:  PORTSMOUTH  VA  23704
EPA ID:  VAD980551683
EPA Region:  03
NPL Status:  Currently on the Final NPL
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R03-92/159
ROD Date:  09/29/1992
Operable Unit(s):  01
Media:  Soil
Contaminant:  Organics, PAHs, PCBs, Metals
Abstract:  SITE HISTORY/DESCRIPTION: The Abex site is a former brass and bronze foundry in Portsmouth, Virginia. Land use in the surrounding area is mixed residential, commercial, and light industrial. The site is located approximately one-half mile west of Elizabeth River, within the 500-year floodplain for the South branch of the River. The Elizabeth River Basin is heavily industrialized and receives wastewater discharges from U.S. Naval facilities, heavy industry, treatment facilities, urban runoff, and boating and docking facilities. From 1928 to 1978, Abex operated a facility that melted used railroad car journal bearings into sand molds to cast new railroad car bearings. The sand casts became laden with metals such as lead, antimony, copper, tin, and zinc. The foundry operations also produced stack emissions of fine particulate matter. During Abex's operations, waste sand was disposed of in a 1-acre area immediately north of the foundry. In 1984, Holland Investment and Manufacturing Corporation purchased the portion of the Abex site that contains the former foundry, which included five buildings and is referred to as the Holland Property. In 1986, EPA discovered high levels of lead in the foundry waste within the Abex Lot and in the soil of many neighboring residential lots. That same year, Abex performed a removal action to excavate and remove lead-contaminated soil from residential areas around the Abex lot, and to pave and fence the Abex and McCready Lots. In 1992, Abex excavated and removed additional contaminated soil from adjacent properties. This ROD addresses contamination in soil and waste materials on the Holland Property, Abex Lot, and McCready Lot and in the surrounding properties within a 700-foot radius of the foundry facility, as OU1. Future RODs will further investigate ground water, ecological impacts, and additional remediation of the soil for OU2. The primary contaminants of concern affecting the soil are organics, including PAHs and PCBs; and metals, including chromium and lead. PERFORMANCE STANDARDS OR GOALS: Chemical-specific soil excavation goals in residential areas down to the water table, which are based on EPA's policies for soil clean-up levels per OSWER Directive #9355.4-02, include lead 500 mg/kg for surface soil to one foot below surface and 1,000 mg/kg for subsurface soil from one foot below surface to the water table. All excavated soil and waste material will be tested using the TCLP method and, if they exhibit toxicity, they will be stabilized onsite to meet RCRA LDR standards prior to offsite disposal. INSTITUTIONAL CONTROLS: Not provided.
Remedy:  SELECTED REMEDIAL ACTION: The selected remedial action for this site includes demolishing all foundry operations buildings, with removal and decontamination of associated equipment and demolition debris at an offsite landfill; temporarily relocating residents during soil excavation; removing and disposing of offsite any asphalt and concrete from paved areas prior to soil removal; excavating surface soil with lead concentrations greater than 500 mg/kg and subsurface soil with concentrations of lead exceeding 1,000 mg/kg from non-residential areas, from around foundations, and under residences in affected residential areas; temporarily storing these onsite prior to treatment; testing, then treating any soil that exhibits TCLP toxicity onsite using stabilization; retesting the treated materials to ensure they meet RCRA LDR requirements, followed by transporting and disposing of treated and untreated soil and waste materials offsite at a RCRA landfill; disposing of water generated during the treatment processes offsite at a POTW; backfilling all excavated areas with clean fill; installing erosion and sediment control measures; and monitoring air for dust and lead during remedial activities. The estimated present worth cost for this remedial action is $28,891,243. There are no O&M costs associated with this remedial action.
Text:  View full-text ROD [ 78K ]
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