Logistics Park Development
ENTACT completed soil and groundwater remediation activities on this former coal-fired power generating station impacted with polychlorinated biphenyls (PCBs), hexavalent chromium (Cr(VI)), chromium ore process residue (COPR) and extractable petroleum hydrocarbon (EPH) at concentrations that exceeded cleanup criteria for future site development. General scope of work included assembly and operation of a temporary construction water treatment system; excavation, segregation, waste characterization and off-site treatment/disposal of excavated Toxic Substances Control Act (TSCA) and Resource Conservation and Recovery Act (RCRA) hazardous and non-hazardous soil; installation of a steel sheet pile cutoff wall using an ABI MobilRam pile driving rig; and restoration, including placement of approved on-site fill and imported certified clean fill material
While completing the original scope of work, an additional area impacted with technologically enhanced, naturally occurring radioactive material (TENORM) was identified. TENORM was present at ground surface to approximately 5-feet bgs and underlain with EPH-impacted soil to a depth of 23-feet bgs. ENTACT, in collaboration with the engineer and developer, implemented an efficient and cost-effective remedy for this newly identified area, which included excavation, stockpiling and characterization of the TENORM; in-situ stabilization of underlying EPH soil; and replacement of the TENORM on-site or disposal off-site based on characterization results.