Environmental remediation
Managing complex impacted sites with proven remediation expertise
Environmental remediation projects require a clear understanding of site conditions, environmental impacts, regulatory requirements, and the practical considerations involved in safely executing the work. ENTACT provides integrated remediation solutions for impacted soil, groundwater, sediment, and industrial sites, supporting Clients through complex environmental challenges from investigation and planning through construction and site restoration.
Our remediation teams combine decades of field experience, specialized equipment, technical expertise, and robust self-performance capabilities to execute projects in challenging environments. By applying proven remediation methods and adapting construction approaches to actual site conditions, ENTACT helps Clients manage risk, maintain project schedules, and achieve long-term environmental objectives.
Highlighted Services
Cap and Containment
Cap and containment systems are a foundational element of ENTACT’s environmental remediation and geotechnical constructionservices. These systems are designed to isolate material in place, prevent off-site migration, manage water and gas movement, and support long-term site closure objectives. ENTACT delivers comprehensive solutions tailored to each site’s unique needs. …
Coal Ash Management
Coal ash is the byproduct of burning coal for electricity generation. When coal is burned in power plants, it produces several types of waste materials, including fly ash, bottom ash, boiler slag, and flue gas desulfurization (FGD) material. These materials are collectively referred to as coal combustion residuals (CCRs). The CCRs are typically managed in surface impoundments, waste piles and landfills at or near the site where the residuals are generated. …
Environmental Dredging
Dredging, capping, and marine construction are ways ENTACT works on the water to improve and maintain waterways, shorelines, wetlands, and remediate sediments. From cleaning up contaminated waterways, to restoring vital wetlands, ENTACT can self-perform a wide variety of work for both public and private sector clients. We have the mobile equipment and experience to work on any body of water, anywhere in the nation. …
Radiological Services
Environments with higher than background concentrations of radioactive materials must be managed and controlled with the utmost safety precautions. ENTACT employs health physicists, engineers, safety officers, and technicians who specialize in radiological management to make sure every step of the process is handled safely and meets or exceeds federal and state regulations. …
Water Management
Effective dewatering and water management is essential to the success of environmental remediation and geotechnical construction projects. At ENTACT, we bring decades of field-proven experience managing groundwater, surface water, and process liquids in support of a wide range of site development, remediation, and restoration efforts. Our in-house teams self-perform dewatering and water treatment tasks across diverse project settings, from active industrial sites to large-scale environmental remediation programs. …
Wetlands and Habitat
Wetlands and sensitive habitats play a critical role in ecological health, biodiversity, and natural flood protection. ENTACT can perform remediation and restoration with precision and care to protect wildlife, water quality, and long-term ecosystem function. ENTACT provides turnkey wetland and habitat remediation, restoration, and protection services nationwide. …
Integrated environmental remediation capabilities
ENTACT supports environmental remediation projects involving:
- Industrial and manufacturing sites
- Former industrial properties
- Federal and public-sector sites
- Coal combustion residuals (CCR)
- Petroleum and hydrocarbon impacts
- Metals and inorganic contaminants
- Polychlorinated biphenyls (PCBs)
- Per- and polyfluoroalkyl substances (PFAS)
- Radiological materials
- Contaminated soil and groundwater
- Landfills and waste management facilities
- Brownfields and redevelopment sites
Our capabilities include:
- Bioremediation
- Cap and containment
- Chemical fixation
- Chemical oxidation
- Chemical reduction
- Coal as impoundment and landfill closures
- Cutoff walls
- Decontamination and demolition
- Dewatering and water treatment
- Excavation
- Ex-situ treatment
- Habitat and wetlands restoration
- Health physics
- In-situ solidification/stabilization
- Isolation barriers
- Liquids/solids separation, dewatering, and water treatment
- Manufactured gas plant site remediation
- MARSSIM/MARSAME & MARLAP support
- Permeable reactive barriers
- Radiological licensing and waste disposal
- Radiological surveys
- Residential remediation
- Sheet pile installation
- Slurry wall construction
- Stormwater management, and erosion and sediment controls
- Wet soil conditioning
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