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RECORD OF DECISION: CPS MADISON SUPERFUND SITE OPERABLE UNITS ONE AND TWO, OLD BRIDGE TOWNSHIP, MIDDLESEX COUNTY, NEW JERSEY
U.S. EPA Region 2, 223 pp, 2019
EPA has released a Record of Decision (ROD) that addresses contamination at Operable Units (OU) 1 and 2 of the CPS Madison Superfund site. Releases of organic compounds and metals from the CPS and Madison properties resulted in VOC and 1,4-dioxane contamination in groundwater and VOC, sVOC, metals, and 1,4-dioxane contamination in soils. The selected remedy for groundwater (OU 1) involves installing and operating an in situ chemical oxidation (ISCO) permeable reactive barrier (PRB) well system. In this system, a series of closely spaced wells will be placed to form a PRB downgradient of the source areas. An oxidant will be injected through these wells into the subsurface to destroy dissolved-phase organic contaminants that pass through. An existing Interim Remedial Measure pump and treatment system will continue operation until the PRB/ISCO system is effective. It will also serve as a contingency remedy if contaminant concentrations in the barrier effluent increase over four consecutive monitoring periods. The selected remedy for soil (OU 2) is ISCO. In accessible areas, oxidant will be mixed directly into an estimated 20,000 yd3 of soil. In inaccessible areas, oxidant will be injected into an estimated 1,500 yd3 of soil. The total present cost of the selected groundwater and soil remedies is $22,308,000. https://semspub.epa.gov/work/02/541232.pdf
EPA has released a Record of Decision (ROD) that addresses contamination at Operable Units (OU) 1 and 2 of the CPS Madison Superfund site. Releases of organic compounds and metals from the CPS and Madison properties resulted in VOC and 1,4-dioxane contamination in groundwater and VOC, sVOC, metals, and 1,4-dioxane contamination in soils. The selected remedy for groundwater (OU 1) involves installing and operating an in situ chemical oxidation (ISCO) permeable reactive barrier (PRB) well system. In this system, a series of closely spaced wells will be placed to form a PRB downgradient of the source areas. An oxidant will be injected through these wells into the subsurface to destroy dissolved-phase organic contaminants that pass through. An existing Interim Remedial Measure pump and treatment system will continue operation until the PRB/ISCO system is effective. It will also serve as a contingency remedy if contaminant concentrations in the barrier effluent increase over four consecutive monitoring periods. The selected remedy for soil (OU 2) is ISCO. In accessible areas, oxidant will be mixed directly into an estimated 20,000 yd3 of soil. In inaccessible areas, oxidant will be injected into an estimated 1,500 yd3 of soil. The total present cost of the selected groundwater and soil remedies is $22,308,000. https://semspub.epa.gov/work/02/541232.pdf
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