Environmental Site Investigation & Remediation

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We have a worldwide reputation for excellence, from supporting clients in assessing the environmental impacts of properties during acquisition and divestiture to full site investigation and remediation solutions.

GHD has been involved in some of the largest environmental remediation projects in North America, and have been very successful transferring the expertise and experience from these more challenging sites to provide effective solutions for small projects. The company has excelled at identifying technically and environmentally responsive solutions in a cost-effective manner.

We take a focused solution-oriented approach to every environmental project rather than a study-based approach. By focusing on the end goal of the project, the scope of investigative programs can be effectively developed to provide the specific information required for risk-based decision-making. This may mean implementing investigative programs in phases or collecting additional data in an investigative phase that would be important for screening potentially appropriate remedial solutions early. We have also taken a leadership role in hundreds of environmental projects where a beneficial end use is a component of a remedy.

With our focus on continuing to exceed our clients' expectations, the firm has also developed very strong internal expertise and state-of-the-art data management tools to assist project managers in executing projects with a focus on quality, responsiveness, and cost-effectiveness.

Services include:

Kanawha River, West Virginia

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Our client is completing an investigation of a 14-mile section of the Kanawha River near Nitro, West Virginia, under the Removal Action program for the United States Environmental Protection agency (USEPA). The river is partially controlled by a series of locks and dams, and is a major transportation route for coal and other materials. The investigation was completed in three phases:

  • Assembly and detailed review of existing information to develop a Site Conceptual Model (CSM)
  • Refining the CSM through focused sampling, including fish tissue, surface water quality, natural recovery analysis, and sediment quality
  • Additional sediment sampling to fill in data gaps to support remedy selection

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Willow Run Creek Site, Michigan

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The Willow Run Creek Site involved the remediation of over 340,000 cubic yards of polychlorinated biphenyl impacted sediments and soil. GHD developed a program of pre-design studies, including pilot-scale dredging/dewatering studies, to determine the optimal method of sediment removal and processing.

The selected remedy involved dewatering of the work area, water treatment, and solidification of the sediments to provide the necessary strength for placement in a site-dedicated consolidation disposal facility (CDF). The CDF was designed to meet stringent Toxic Substances Control Act (TSCA) and Resource Conservation and Recovery Act (RCRA) hazardous waste disposal facility standards. 

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