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Site Remediation

Excavator in construction site at stunning sunset

At Tetra Tech, our Leading with Science® approach to remediation helps our clients achieve regulatory compliance, reduce or eliminate site risks, and improve property values while protecting our natural environment.

Our site remediation teams deliver innovative solutions around the globe for some of the most complex environmental cleanup challenges our clients face. We provide full-service capabilities, subject matter expertise, and outstanding project delivery to address a wide range of contaminants in all media of concern in an evolving regulatory environment. Our focus on safe project execution and our ability to offer comprehensive services from planning through construction provide our clients with cost-effective, low-risk solutions to site remediation.

Geologist overseeing soil remediation at an industrial site in Chicago

Remedial Design and Engineering

Tetra Tech develops cost-effective remediation solutions based on site investigations, feasibility studies, an understanding of future site use, client objectives, and applicable regulatory and permitting requirements. We deliver proven remedial design and engineering techniques to provide best-value sustainable solutions for new remediation projects and optimization of existing remediation projects.

  • Pre-design investigations
  • Site-, location-, and contaminant-specific approaches
  • Soils, sediments, and sludges
  • Groundwater and surface water
  • Air quality and control
  • Procurement and bid support
People standing at a site where soil boring drilling is being conducted in Glacier Ridge Landfill, Wisconsin

Soil and Groundwater Remediation

Tetra Tech designs and implements remedial solutions that reduce our clients’ liabilities and restore contaminated lands to productive use around the globe. Our applied experiences enable development of proven and innovative remedies that optimize business performance for our clients and provide exit strategies for sustainable site closure. 

  • Soil remediation 
  • Groundwater remediation 
  • TetraCap™ guaranteed fixed price remediation program 
  • Low-level radiological remediation
  • Munitions remediation 
  • Operation and maintenance
  • Regulatory compliance and closure 
Floating excavators at Kentucky Utilities CCR site in Ghent, Kentucky

CCR Remediation

Tetra Tech provides complete planning, permitting and regulatory compliance, engineering, design, construction, geosynthetic installation, remediation, and operations and maintenance services for coal combustion residuals (CCR). Our wide-ranging technical experience, combined with our full lifecycle services, provides beneficial solutions and compliant closures.

  • Permitting and regulatory compliance
  • Engineering design
  • Impoundment closure, geosynthetic liners, and remediation
  • Landfill construction and closure
  • Operations and maintenance
  • Beneficial use
  • Decommissioning and repurposing
View of U.S. Navy Jackson Park, Washington state, the site of a Tetra Tech pilot study

Sediment Remediation

We develop sediment remediation and restoration strategies for contaminated rivers, streams, lakes, and coastal areas. Our experience includes the remedial design and remediation of sites with a wide range of contaminants, using both active and passive technologies with full design-build capability. We have supported several of the largest sediment remediation projects in the world.

  • Site development strategies
  • Site characterization
  • Engineering design
  • Construction
  • Site restoration
Newmont Mining Site, Liner Installation

Mine Site Remediation

Tetra Tech provides comprehensive mine site services to characterize and facilitate the reclamation or remediation of contaminated mine lands to mitigate risks to human health and the environment. We first understand our client’s objectives and the regulatory environment to develop compliant, scientifically sound, innovative, and cost-effective remedial designs to execute remedial actions that meet our clients’ goals for post-mining land reuse and/or divestiture.

  • Abandoned mine lands
  • Coal mines
  • Hardrock mines
  • Operations, monitoring, and maintenance
  • Hydrogeological and biogeochemical modeling
  • Mine-impacted water identification, management, and treatment
  • Acid and metalliferous mine drainage
  • Coal seam and mine fire abatement
Landfill at Pt. McIntyre, Alaska, remote north slope

Landfill and Solid Waste Remediation

Tetra Tech has years of experience finding proven systems and innovative solutions for our clients for the environmental investigation and remediation of landfills and other solid waste sites around the world. Tetra Tech’s team of top-level environmental specialists are ready to investigate and remediate releases of hazardous substances to the environment from landfills and solid waste facilities. Our experts can address solvents, petroleum, metals, and emerging contaminants in the most complex geologic conditions.

  • Sediment and ecological impacts
  • Vapor intrusion investigation and mitigation
  • Regulatory reporting
  • Remedial system installation, injection programs, excavation, and capping
  • Landfill liner installation
  • Landfill gas control systems
View of demolished power plant, part of the Salt River Project in Arizona


Tetra Tech delivers environmentally sound, cost-effective solutions that manage client risk by developing compliant and beneficial decommissioning plans, conducting specialty decontamination services, and providing safe, systematic demolition and dismantling. Tetra Tech’s expertise helps clients minimize project risks, streamline operations, and successfully deliver projects.

  • Facility assessment and deactivation planning
  • Hazardous materials and asbestos surveys and abatement
  • Decommissioning, decontamination, and demolition
  • Asset recovery, recycling, waste management
  • Impoundment and landfill closure and construction
  • Program management and/or owner’s engineer services
Footprint Power Conceptual Design, Massachusetts

Site Redevelopment

Tetra Tech transforms environmental legacy or remediated brownfield sites into economic assets for our clients. Our turnkey support and sustainable solutions integrate feasibility studies with commercial, industrial, and residential redevelopment initiatives. Our team has proven site redevelopment design and engineering techniques to augment innovative and traditional site redevelopment strategies specific to real estate developers and industrial/commercial clients.

  • Phase I/Phase II Environmental Site Assessments
  • Project management, feasibility studies, and environmental vulnerability risk analyses
  • Funding and economics opportunities
  • Value engineering, procurement and bid support, and sustainable solutions
  • Ecological compensation and mitigation

Connect with us. Reach out to our environmental solutions experts.

Our featured site remediation highlights

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Deric Kearns, Project Manager of the Month, on Leading Complex Environmental Cleanup Projects

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Kimberly Porsche, Project Manager of the Month, on Developing Client Relationships to Deliver on Complex Projects

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Ron Marnicio, Project Manager of the Month, on Maintaining Successful Munitions Response Projects

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