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Seattle, Washington
Environmental Services in Seattle, WA
Environmental site assessments and construction-phase environmental support that keep transactions and projects moving without surprises. Seattle and the surrounding WA area is covered on a project basis through our Seattle, WA regional hub.
- Dispatched from
- Seattle, WA regional hub · project-based staffing
- Lead time
- Scheduled by phone or proposal; lead time confirmed when the scope is set
- Laboratory
- Sugar Land, TX laboratory under chain of custody, or a mobile laboratory for large projects
- Reporting
- Reviewed and issued under a documented quality system; formatted for owner, engineer, and building-official review
- Serving
- Seattle and the surrounding WA area — Spokane, Tacoma, Vancouver
- Coverage
- Washington statewide · 27 regional hubs
- Technicians
- ACI- and NICET-certified field staff; licensed professionals in Washington
- Call us
- (346) 420-5425
Scope
Environmental services in Seattle
- Phase I Environmental Site Assessments for acquisitions and refinancing
- Phase II subsurface sampling when a Phase I identifies recognized environmental conditions
- Construction stormwater support: SWPPP compliance inspections
- Soil management screening for export and import of fill material
Full scope, standards list, and pricing basis: Environmental Services.
Local conditions
Environmental conditions in Seattle
Seattle's development landscape sits on a complex foundation — glacially deposited soils, a high water table in many lowland areas, and proximity to both Puget Sound and freshwater shorelines subject to state and federal environmental jurisdiction. Washington's Model Toxics Control Act adds a layer of regulatory obligation that goes beyond federal CERCLA requirements, meaning environmental due diligence here demands familiarity with both frameworks. Whether you are financing a commercial acquisition, redeveloping an industrial waterfront parcel, or managing contamination discovered during grading, gaps in environmental documentation create real schedule and lending risk. Our environmental services team, dispatched through our Seattle regional hub, provides Phase I and Phase II environmental site assessments and construction-phase environmental support to keep transactions and active projects on track. Deliverables are prepared to support lender, regulatory, and project team requirements, and our laboratory operates under a documented quality system to support the analytical work that underpins Phase II investigations.
Much of Seattle's developable land carries a history of industrial, port, and railroad use, and glacially derived soils — ranging from dense till to loose outwash sands — can complicate both contaminant migration patterns and subsurface investigation planning. Washington's wet season, which runs roughly October through May, can affect site access, soil sampling logistics, and groundwater depth readings, all factors worth building into your project schedule.
FAQ · Seattle
How does Washington's Model Toxics Control Act (MTCA) affect our Phase II investigation and cleanup obligations compared with federal Superfund rules?
MTCA establishes Washington-specific cleanup standards and procedures administered by Ecology, independent of federal CERCLA. If a Phase II confirms contamination above MTCA cleanup levels, you are operating inside a state regulatory framework that sets its own investigation, remedial action, and reporting requirements. Your project team should confirm whether Ecology involvement or a voluntary cleanup agreement is appropriate before finalizing a remediation approach.
Our site is near a shoreline or wetland buffer. Does that change the scope of an environmental site assessment?
Proximity to Puget Sound, Lake Washington, or regulated wetland buffers can introduce jurisdictional considerations under the Shoreline Management Act and critical areas ordinances, which vary by municipality. While a Phase I ESA conducted under ASTM E1527-21 addresses recognized environmental conditions, it does not substitute for a separate wetland delineation or critical areas review. We flag these conditions in our report so your team can engage the appropriate specialists.
We broke ground and encountered stained soil or an odor during excavation. What environmental support can you provide during construction?
Construction-phase environmental support can include soil screening during excavation, waste characterization sampling to determine proper disposal classification, and documentation support for unexpected finds. Our field technicians collect and log samples to chain-of-custody protocols, and our laboratory, operating under a documented quality system, coordinates analytical turnaround to minimize hold time and support schedule decisions as conditions develop in the field.
Which office covers environmental in Seattle, WA?
Field work in Seattle is dispatched through the Seattle, WA regional hub. Laboratory testing is performed in Sugar Land, TX under chain of custody, or in a mobile laboratory mobilized to large Seattle projects.
Are the technicians you send to Seattle certified?
Field sampling and testing in Seattle are performed by our ACI- and NICET-certified technicians. Environmental engineering and professional services are delivered with professionals licensed in Washington, coordinated under one proposal.
Hiring: we staff this work locally. Field technician openings in Seattle · all positions.
Scheduling & proposals
Need environmental services in Seattle?
Call to schedule a technician, or send project documents for a written proposal.