BROWNFIELD REDEVELOPMENT AREA REMEDIATION
ENTACT performed remediation activities at several blocks and lots at this site, representing a larger-area brownfield redevelopment project for future residences. Multiple industrial operations impacted the soil with the following contaminants of concern: polycyclic aromatic hydrocarbons (PAHs), volatile organic compounds (VOCs), polychlorinated biphenyls (PCBs), hexavalent chromium, chromium ore process residue (COPR), extractable petroleum hydrocarbon (EPH), pesticides, various metals and lead. Scope of work included design, procurement, and installation of a 1,600-linear-foot, 40-foot-deep permanent vertical hydraulic control system; dewatering, water treatment,
ACTIVE REFINERY TANK FOOTPRINT SUBSURFACE GROUND IMPROVEMENT
As part of a larger capital program, an active refinery sought to expand its footprint to accommodate 14 tanks and four pump pads. Before construction could start on the new structures, ENTACT performed subsurface soil treatment of soft saturated soils to minimize future tank foundations and pump pads settlement. The ground improvement treatment consisted of installing a series of 8-foot diameter soil-cement columns on an 11-foot by 11-foot grid underneath the planned footprint of each tank foundation. A series of
LOGISTICS PARK DEVELOPMENT
ENTACT completed soil and groundwater remediation activities on a 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. ENTACT performed the 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. After the removal of the impacted soil, we installed 7,500