FORMER WOOD PRESERVING SITE REMEDIAL ACTION
ENTACT was engaged to remediate an 84-acre wood preserving site added to the National Priorities List in 1997 due to contaminated groundwater, soil, and sediment resulting from more than 30 years of wood treating operations. Previous cleanup phases had been insufficient, leading to the selection of in-situ solidification (ISS) as the revised remedy. On this project, ENTACT: Conducted an ISS demonstration prior to full-scale implementation Removed, stockpiled, and replaced clean overburden soils Executed ISS on 15,400 cubic yards of non-aqueous
COKE AND GAS SITE UPLANDS REMOVAL ACTION
ENTACT conducted a non-time-critical removal action at the 45-acre uplands area of a former coke and gas site to prepare for commercial redevelopment. This project involved multiple phases to ensure effective remediation and site readiness. Upon project completion, ENTACT had: Demolished and removed of 38,000 cubic yards of surface and subsurface structures Resized, crushed, and screened 53,000 cubic yards of stockpiled debris for reuse onsite Removed 3,900 wooden pilings Excavated 30,000 cubic yards of non-affected overburden soil for onsite stockpiling
FORMER MANUAFACTURED GAS PLANT (MGP) SITE REMEDIAL ACTION
ENTACT undertook the remediation of a former MGP site situated in an urban area, adjacent to light industrial and commercial developments, as well as undeveloped land and a shallow river. Historical releases of MGP residuals had contaminated soil and groundwater, leading to the migration of pollutants to the riverbank, affecting an isolated sediment area. During the project, ENTACT: Developed a treatability study Demolished concrete footings and slabs Excavated and disposed of 10,500 tons of impacted soil off-site Installed180 linear feet
FISHING CREEK SOUTH JETTY REHAB AND MAINTENANCE DREDGING
This project was performed by White Lake Dock & Dredge, a division of ENTACT. Scope of work involved both dredging and stone jetty improvements for the U.S. Army Corps of Engineers. All work was conducted in a shallow tidal environment, ensuring compliance with environmental standards. Throughout this project, our team: Dredged more than 30,000 cubic yards of sediment from inner and outer harbors and conveyed it to a confined disposal facility (CDF) Graded and replaced weir box outlet control structures
BAYFRONT REDEVELOPMENT
ENTACT completed a comprehensive multi-phase remediation of a 100-acre industrial site located near a river, preparing it for mixed-use redevelopment. This project focused on the removal of hazardous materials, groundwater management, and site restoration to ensure compliance with environmental standards. Phase 1: Central Area Remediation The first phase spanned three and a half years and concentrated on the central portion of the site. This phase involved the excavation and removal of significant amounts of chromium ore process residue (COPR) and
SANITARY LANDFILL NPL SITE
ENTACT was engaged to perform remediation services at a former sanitary landfill National Priorities List site spanning approximately two acres. The project required the removal of 23,800 cubic yards of impacted soil and the disposal of over 35,000 buried drums that had been discarded at the site in the early 1970s. On this project, ENTACT: Constructed a 200-foot by 350-foot container management area pad Designed and installed a steel sheet pile wall to protect an existing soil-cement-bentonite slurry wall Constructed
BROWNFIELD REDEVELOPMENT AREA REMEDIATION
ENTACT performed remediation activities across several blocks and lots as part of a larger brownfield redevelopment project aimed at future residential use. The site was impacted by multiple industrial operations, leading to soil contamination with various hazardous substances, including polycyclic aromatic hydrocarbons (PAHs), volatile organic compounds (VOCs), polychlorinated biphenyls (PCBs), hexavalent chromium, chromium ore process residue (COPR), extractable petroleum hydrocarbons (EPH), pesticides, metals, and lead. For this project, ENTACT: Designed, procured, and installed a 1,600-linear-foot, 40-foot-deep permanent vertical hydraulic control
RARE EARTH PROCESSING FACILITY RADIOLOGICAL DECOMMISSIONING
ENTACT decommissioned, decontaminated, and demolished a former rare earth minerals processing plant within a larger chemical manufacturing complex. The site received USEPA closure approval in 2015. Through modeling, remediation goals were established for allowable soil concentrations, achieving regulatory compliance with limits of 3 pCi/g for thorium-232 and 9 pCi/g for uranium-238. 100,000 tons of radiologically impacted soil, sediment, and construction debris and 230,000 gallons of impacted water were removed from the facility using rail, truck, and tanker transport. Waste was
ACTIVE REFINERY TANK FOOTPRINT SUBSURFACE GROUND IMPROVEMENT
As part of a larger capital program, an active refinery aimed to expand its footprint for 14 tanks and four pump pads. Before construction could begin, ENTACT performed subsurface soil treatment to address soft saturated soils, reducing potential settlement of the new structures. This comprehensive ground improvement approach ensured the structural integrity of the new tank foundations and pump pads, meeting project objectives and performance criteria. On this project, ENTACT: Installed a series of eight-foot diameter soil-cement columns on a
LOGISTICS PARK DEVELOPMENT
ENTACT completed comprehensive soil and groundwater remediation activities at a former coal-fired power generating station contaminated with polychlorinated biphenyls (PCBs), hexavalent chromium (Cr(VI)), chromium ore process residue (COPR), and extractable petroleum hydrocarbons (EPH). These contaminants were present at levels exceeding cleanup criteria, necessitating remediation for future site development. Throughout this project, ENTACT: Excavated, segregated, and characterized hazardous (TSCA and RCRA) and non-hazardous soil for off-site treatment and disposal Installed 7,500 square feet of a steel sheet pile cutoff wall using
FORMER SMELTER MIXED-USE REDEVELOPMENT
ENTACT executed comprehensive remedial action activities at a former smelter site, focusing on managing and consolidating onsite debris, as well as decontaminating and demolishing the remaining smelter buildings. On this project, ENTACT: Regraded more than 1.3 million cubic yards of slag and soil, including slag piles as large as eight acres and up to 50 feet tall Distinguished five separate slag categories by color and gradation for targeted utilization in various sections of the development Removed impacted soil and sediment
CANAL SEGMENT CONTAMINATED SEDIMENT REMEDIATION
ENTACT executed the remediation of mercury and lead contaminated sediments along a 3,600-linear-foot segment of a closed canal. This project involved the construction of a temporary remediation support area and several key operational components to ensure effective sediment removal and management. Our team successfully addressed sediment contamination and enhanced the ecological and recreational value of the canal area. On this project, ENTACT: Constructed a temporary remediation support area with two dredge processing cells, a temporary water pretreatment system area, multiple