Environmental Remediation

deep soil digging project

Active Refinery Tank Footprint Subsurface Ground Improvement

Active Refinery Tank Footprint Subsurface Ground Improvement Industry: Oil & Gas Location: Gulf Coast 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, the subsurface required in-situ solidification and stabilization. Once we determined the successful stabilization approach …

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Bayfront Redevelopment

Bayfront Redevelopment Industry: Real Estate, Chemical Location: Northeast ENTACT completed the multi-phase remediation of a 100-acre industrial site located on a river in preparation for mixed-use redevelopment. The initial phase was completed over 3.5 years and consisted of 34 acres located in the central portion of the site. Scope of work included: excavation of approximately …

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Logistics Park Development

Logistics Park Development Industry: Real Estate, Utilities Location: Northeast 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 …

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Multi-Use Redevelopment Property

Multi-Use Redevelopment Property Industry: Real Estate, Oil & Gas Location: West Coast ENTACT completed several phases of remediation at this high-profile redevelopment driven project. Activities included excavation, stockpiling and reuse of over 75,000 cubic yards of overburden; on-site crushing and reuse of over 30,000 tons of concrete; excavation, stockpiling and off-site disposal via gondola rail …

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Former Smelter Mixed-Use Redevelopment

Former Smelter Mixed-Use Redevelopment Industry: Real Estate Location: Mountain States ENTACT completed remedial action activities that included management and consolidation of all on-site debris; decontamination and demolition of remaining smelter buildings; asbestos abatement; UST removal; regrading of over 1.3 million cubic yards of slag and soil – slag piles as large as 8.5 acres and …

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Brownfield Redevelopment Area Remediation

BROWNFIELD REDEVELOPMENT AREA REMEDIATION Industry: Real Estate Location: Northeast ENTACT performed remediation activities at several blocks and lots at this site representing Phase I of a larger-area brownfield redevelopment project. Contaminants of concern (COCs) included polycyclic aromatic hydrocarbons (PAHs), volatile organic compounds (VOCs), polychlorinated biphenyls (PCBs), hexavalent chromium, chromium ore process residue (COPR), extractable petroleum …

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Canal Segment Contaminated Sediment Remediation

Canal Segment Contaminated Sediment Remediation Industry: Publicly Funded Location: Midwest ENTACT performed remediation of mercury- and lead-contaminated sediments from an approximate 3,600-linear-foot segment of a closed canal. The scope of work included protection of surrounding structures and existing pavement; asbestos abatement and demolition of a building and shed; construction of a temporary remediation support area …

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Former Oilfield and Service Facility Excavation and Backfill Services

Former Oilfield and Service Facility Excavation and Backfill Services Industry: Oil & Gas Location: Mountain States ENTACT performed remediation of soils impacted by volatile organic compounds (VOC); nonaqueous phase liquids (NAPL); and benzene, toluene, ethyl-benzene and xylene (BTEX) at this former oilfield and service facility. The scope of work included shallow excavation of 3,268 cubic …

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River Dredging Project

River Dredging Project Industry: Oil & Gas Location: Northeast ENTACT performed dredging of petroleum-impacted sediments from this major river system resultant from a spill event. The scope included construction of temporary facilities, such as a stockpile management area, dewatering pad, laydown area, office facilities, etc.; construction of a temporary access haul road connecting the staging …

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Waste Oil Pits Superfund Site

Waste Oil Pits Superfund Site Industry: Oil & Gas Location: Gulf Coast ENTACT performed in-situ stabilization of 45,000 cubic yards of hydrocarbon sludge at this former waste oil pits site, situated within a cypress swamp. Challenges included the relocation of a half-mile of an existing stream away from the former waste pits and excavation of …

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Disposal Services Site

Disposal Services Site Industry: Oil & Gas Location: Southwest ENTACT completed remediation activities at a petrochemical and industrial waste site, which included treating more than 11 million gallons of impacted water and performing ISS of 87,000 cubic yards of hydrocarbon and polychlorinated biphenyl-impacted sludges up to 12 feet deep. Additional services performed included managing stored …

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Former MGP Site Remedial Action

Former MGP Site Remedial Action Industry: Utilities Location: Midwest ENTACT remediated this former manufactured gas plant (MGP) site, located in an urban area bordered by light industrial and commercial development, undeveloped land and a shallow river. Historical releases of MGP residuals had impacted soil and groundwater, and contaminants migrating to the bank of the adjacent …

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Coke and Gas Site Uplands Removal Action

Coke and Gas Site Uplands Removal Action Industry: Utilities, Real Estate Location: Midwest ENTACT performed a non-time-critical removal action of the 45-acre uplands area of this former coke and gas site, in preparation for commercial redevelopment. The overall scope of work included demolition and removal of 38,000 cubic yards of surface and subsurface structures; resizing, …

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Active Iron and Steel Manufacturing Facility

Active Iron and Steel Manufacturing Facility Industry: Manufacturing Location: Midwest ENTACT completed corrective measures at this active manufacturing facility without hindering the plant’s daily operations. Using excavator bucket mixing, ENTACT stabilized 165,000 cubic yards of impacted soil and consolidated more than 120,000 cubic yards of overburden soil. We also dewatered, in-situ stabilized, excavated and disposed …

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Industrial Complex Remediation and Redevelopment

Industrial Complex Remediation and Redevelopment Industry: Chemical, Real Estate Location: Southwest ENTACT performed remedial activities at this 2,200-acre industrial complex in preparation for mixed-use redevelopment. Using our internal technical and treatability skills, we developed a remedial solution that would reduce the site’s high moisture levels to target objectives. This process included geotechnical evaluations, soil mixing, …

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Former Manufactured Gas Plant Site

Former Manufactured Gas Plant Site Industry: Real Estate, Utilities Location: Midwest ENTACT implemented in-situ solidification and stabilization at this former manufactured gas plant to address the impacted materials in place. Through two phases of work, we successfully addressed environmental conditions and prepared the site for redevelopment, all while meeting our client’s schedule and budget objectives. …

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Integrated Energy Company Key Supplier Program

Integrated Energy Company Key Supplier Program Industry: Oil & Gas Location: National ENTACT regularly performs remedial construction, geotechnical construction and civil construction activities throughout the U.S. and select international locations for this major integrated energy company. ENTACT joined this client’s team, assisting with preliminary design evaluations, site engineering, remedy selection and cost budgeting in the …

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PCB Site Residential Remediation and Restoration

PCB Site Residential Remediation and Restoration Industry: Chemical Location: Southeast The area surrounding an industrial facility contained polychlorinated biphenyls (PCBs). Much of the area included residential and community spaces, making removal critical. ENTACT used its residential remediation expertise to develop a field approach that prioritized the safety of the community, communication with the impacted neighbors …

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Former Phosphate Fertilizer Sites Removal Action

Former Phosphate Fertilizer Sites Removal Action Industry: Chemical Location: Southeast ENTACT performed remediation of nine former phosphate fertilizer production and manufacturing sites to address lead- and arsenic-impacted soils, sediment and groundwater. Our client needed a partner that could navigate the complexities and requirements associated with this effort. Sites were in commercial, residential and industrial zones. …

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Former MGP Site ISS Phase

Former MGP Site ISS Phase Industry: Utilities Location: Northeast ENTACT combined its construction background and ground improvement expertise to create a multipart solution for this complex site. We performed remediation activities under a temporary containment building equipped with a vapor management system. These activities included soil excavation, treatment, restoration and civil construction services. Remediation included …

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