Record of Decision System (RODS)
AMERICAN CHEMICAL SERVICE, INC.
|Site Name:||AMERICAN CHEMICAL SERVICE, INC.|
|Address:||420 SOUTH COLFAX AVENUE|
|City & State:||GRIFFITH IN 46319|
|NPL Status:||Currently on the Final NPL|
|ROD Type:||Record of Decision|
|Media:||Debris, Ground Water, Soil|
|Contaminant:||VOCs, Other Organics, Metals|
|Abstract:||SITE HISTORY/DESCRIPTION: The 36-acre American Chemical Services (ACS) site is a chemical manufacturing facility in Griffith, Indiana, which was formerly involved in solvent recovery. Land use in the area is predominantly residential and industrial with a wetlands area located north of the Chesapeake and Ohio railway on the west of the site. Nine upper aquifer wells and 16 lower aquifer wells are located within 1/2 mile of the site, with area residents using most of the lower aquifer wells for drinking water. From the late 1960's to early 1970's, ACS manufactured barium naphtherate, brominated vegetable oil, lacquers and paints, liquid soldering fluid, and polyethylene solutions in polybutene. Two onsite incinerators burned still bottoms, nonreclaimable materials generated from the site,and offsite wastes; however, in the 1970's, the incinerators were dismantled, the shells were cut up and scrapped, and the burners and blowers remain onsite. From 1970 to 1975, batch manufacturing expanded, and additives, lubricants, detergents, and soldering flux were manufactured. In 1980, a 31 -acre part of the property to the west of the offsite containment area was sold to the City of Griffith to expand the City's municipal landfill. Solvent recovery operations continued until 1990 when ACS lost interim status under RCRA regulations because of failure to obtain required insurance policies. Three identified disposal areas on the ACS property are the Onsite Containment Area, where approximately 400 drums containing sludge and semi-solids of unknown types were reportedly disposed of; the Still Bottoms, Treatment Lagoon #1, and adjacent areas, which received still bottoms from the solvent recovery process, including a pond and lagoon that were taken out of service in 1972, drained, and filled with an estimated 3,200 drums containing sludge materials; and the Offsite Containment Area and Kapica/Pazmey property, which was used as a waste disposal area and received wastes that included onsite incinerator ash, general refuse, a tank truck containing solidified paint, and an estimated 20,000 to 30,000 drums that were reportedly punctured prior to disposal. Disposal practices in the Offsite Containment Area ceased in 1975. This ROD addresses a final remedy for the buried drums, as well as waste, contaminated soil, debris, and ground water. The primary contaminants of concern affecting the soil, debris, and ground water are VOCs, including benzene, TCE, toluene, and xylenes; other organics, including PCBs, PAHs, and phenols; and metals, including arsenic, chromium, and lead. PERFORMANCE STANDARDS OR GOALS: Chemical-specific soil clean-up goals are based on risk-based levels and include benzene 1.0 mg/kg; toluene 167-5,000 mg/kg;xylenes 867-26,000 mg/kg; PCBs 10 mg/kg (with 10-inch soil cover); chromium 47-1,400 mg/kg; and lead500 mg/kg. The lead clean-up level for soil is based on the Interim Guidance on Establishing Soil Lead Cleanup Levels at Superfund Sites and the PCB clean-up level for soil is based on TSCA policy for unrestricted access. Chemical-specific ground water clean-up goals are based on riskbased levels, SDWA MCLs, and benzene 5 ug/l; PCE 5 ug/l; PCBs 0.06 ug/l; and arsenic 8.8 ug/l. INSTITUTIONAL CONTROLS: Institutional controls may be implemented in the form of deed restrictions, and site access restrictions such as fencing, to provide protection from contaminants until clean-up standards are met.|
|Remedy:||SELECTED REMEDIAL ACTION: The selected remedial action for this site includes excavation and offsite incineration of approximately 400 intact buried drums, decontaminating and disposing of miscellaneous debris offsite;treating contaminated soil using in-situ vapor extraction; conducting an in- situ vapor extraction pilot study for Onsite Area buried waste; excavating and treating buried waste or PCB-contaminated soil onsite using low temperature thermal treatment, with vapor emission control during excavation, and possible immobilization of inorganics after treatment; depositing the treated residuals that meet healthbased levels onsite and covering the area with a soil cover; pumping and onsite treatment of contaminated ground water along with wash water from the decontamination processes and condensate from the soil treatment processes using a method to be determined during the RD phase, with onsite discharge of the treated water to surface water and wetlands; continuing to evaluate and monitor wetlands, with mitigation of affected wetlands if necessary; controlling and monitoring air emissions from excavation and treatment processes; conducting longterm ground water monitoring; and implementing, to the extent possible, institutional controls including deed restrictions, and site access restrictions such as fencing. The estimated present worth cost for this remedial action ranges from $37,800,000 to $46,800,000, which includes an annual O&M cost of$17,670,000 for 30 years.|
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