CODE remediated contaminated soils in 14 areas of concern (AOCs) at the ICI Subsite in Bayonne, NJ. The AOCs were all located within the boundaries of an operating chemical manufacturing facility and all were underlain by petroleum LNAPL. The AOCs were grouped into seven excavation zones containing hazardous and non-hazardous levels of chlorinated solvents and PCBs in concentrations >50 ppm at depths ranging from one to 10 feet.

CODE’s involvement at the former ExxonMobil/current ICI Subsite dates back to 2002 when it was hired to remediate impacted soil associated with a pipe repair project. In 2002-2003, CODE evaluated existing site analytical data to develop budgetary estimates for off-site T&D of impacted soils. In 2004, CODE was asked to evaluate on-site treatment technologies for the AOC soils as an alternative to off-site T&D. CODE studied the operational efficiency, safety, cost effectiveness, and permitability of several technologies and ultimately recommended the use of an on-site Thermally Enhanced Soil Vapor Extraction system to remove/destruct VOCs and SVOCs from excavated site soils. CODE worked with Malcolm Pirnie to resolve CAMU-Listed Source Rule issues and assisted in the dialogue between NJDEP and USEPA to leave treated soils on-site as non-hazardous despite the fact that they came from listed sources. This proved to be a MAJOR factor in getting the project out of stall mode. In 2005 CODE met with NJDEP’s Site Remediation and Air Permit Groups and was prepared to obtain fast-track approval of the on-site treatment application.

Based on a final review of all options and related issues, the PRP committee made the decision to ship the material off-site for disposal. Once the decision was made, CODE obtained necessary approvals, prepared required project plans, and initiated site operations.

Remedial work at the active manufacturing site included excavation, classification, and off-site T&D of 500 tons of PCB-contaminated soil; 5,400 tons of hazardous soils; and 2,000 tons of non-hazardous soils. 45,000 gallons of construction-derived wastewater (hazardous and non-hazardous) also was collected and characterized for proper off-site disposal. ~500 tons of concrete and asphalt overlying the AOCs was removed and disposed off-site. 1,400 SF of asphalt and 30 CY of concrete structures was installed as part of site restoration. Various site utilities also were removed to accommodate remedial operations including an AC unit, rail spur, and free oil recovery system. Removal and restoration of these systems was carefully coordinated with the Owner’s Site Representative to avoid disrupting ongoing plant operations.

Work was performed on schedule and within budget despite record setting heat and excessive rainfall to the satisfaction of the Owner, Engineer and involved regulatory personnel.