In-Water Cleanup and Restoration Services

Site characterization, risk assessment, and cleanup level development
Engineering alternatives analyses, feasibility studies, and civil design
Source control assessment and contaminant fate and transport modeling
Aquatic habitat restoration and Natural Resources Damage settlements
Regulatory negotiations, permitting, and tribal fisheries coordination
Construction management and compliance, long-term maintenance and monitoring

We provide in-water cleanup, shoreline redevelopment, and aquatic habitat restoration services for complex waterfront projects. We merge a sharp technical focus with a strategy that evaluates historical site use, contaminant and migration pathways, objectives for property use and development, and opportunities to both minimize environmental impact and restore natural ecology.

At the water’s edge, we support our clients to navigate a highly complex maze of technical, regulatory, and permitting challenges to achieve optimal solutions that enhance both waterfront property use and aquatic habitat value.

In-water cleanup and restoration projects are frequently long-term endeavors consisting of scores of interrelated steps. We partner closely with our landowner clients to ensure that their short- and long-term objectives are optimized throughout.

Representative Projects

Port of Tacoma

Pier 4 Time-Critical Removal Action
Vigor Shipyards

Sediment Cleanup and Habitat Restoration
Western Port Angeles Harbor Group

Western Port Angeles Harbor Sediment Cleanup
Port of Bellingham

Harris Avenue Shipyard Remediation
Schnitzer Steel Industries, Inc.

Portland Harbor Superfund Site: River Mile 3.5 East
City of Tacoma

Thea Foss Waterway Superfund Cleanup

What sets us apart

Thoughtful design of sampling approaches, risk evaluation, and cleanup level development
Practical approaches for contaminant source control evaluation, modeling, and implementation
Integration of redevelopment goals with cleanup and restoration design
Interactive and collaborative processes with regulators, tribes, permitting agencies, and stakeholders
Beneficial reuse alternatives for dredge material and demolition salvage
Litigation support for sampling programs, analytical techniques, and data interpretation
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We have worked with the Floyd|Snider team for over 6 years, often with long stretches of time between project phases, and they were always readily available, refreshed on the project history, and actively engaged in the project’s next steps. They consistently provide smooth and reliable communication and coordination between construction contractors, environmental surveyors, multiple government agencies, legal counsel and UniSea itself, to ensure that project objectives and compliance requirements are satisfied.

Emily Gibson, Corporate Director of Sustainability & Strategic Initiatives, UniSea, Inc.