Our environmental practice is based on our senior staff and their long-term engagement in developing investigation and remediation strategies for contaminated sites. Many contaminated sites, especially those regulated by complex requirements or with challenging contamination issues, can require years to bring to closure. Our staff have been involved in some of the region’s most complex investigation and remediation projects for more than a decade because our clients trust our work and expertise in strategy development, remedial investigation/ feasibility studies, Superfund cleanup, fate and transport modeling, remedial design, and regulatory permitting.

In addition to these long-term projects, we often are sought by clients to quickly address less complex project needs to support property development or transfer. Several of our personnel have worked with regulators to develop policy and regulations related to upland and sediment cleanup, and we are well known and respected by Northwest regulators. Using these relationships, process knowledge, and technical expertise we help our clients turn their environmental liabilities into assets.

Using our experience developing investigation and remediation strategies, relationships with regulators, process knowledge, and technical expertise we help our clients turn their environmental liabilities into assets.

GSI’s staff has experience with all phases of investigation and remediation projects, including:

  • Site investigations
  • Regulatory process strategy
  • Remediation
  • Regulatory permitting and compliance
  • Database and data assessment tool development
  • Litigation support
  • Chemical fate and transport evaluation
  • Source identification and control strategies
  • Contractor management
  • Fish tissue studies
  • Monitoring and operations

Featured contaminated site investigation and remediation projects:

Portland Harbor Superfund Site

Portland Harbor Superfund Site Support

Groundwater Bioremediation and Bioaugmentation

Bioremediation & Bioaugmentation

McCormick & Baxter Superfund Site

McCormick & Baxter Superfund Site

Sycan_locomotive shop

Former Locomotive
Shop Cleanup

Landfill Environmental Compliance Support Project

Landfill Permit Compliance Support

Remedial Investigation and Feasibility Study