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Hillsboro, Oregon
Environmental Services in Hillsboro, OR
Environmental site assessments and construction-phase environmental support that keep transactions and projects moving without surprises. Hillsboro and the surrounding OR area is covered on a project basis through our Seattle, WA regional hub.
- Dispatched from
- Seattle, WA regional hub · project-based mobilization
- Lead time
- Set in the proposal, with mobilization planned around your pour and earthwork schedule
- 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
- Hillsboro and the surrounding OR area — Portland, Eugene, Salem
- Coverage
- Oregon statewide · 27 regional hubs
- Technicians
- ACI- and NICET-certified field staff; licensed professionals in Oregon
- Call us
- (346) 420-5425
Scope
Environmental services in Hillsboro
- 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 Hillsboro
Hillsboro sits at the center of one of the most active development corridors in the Pacific Northwest. The Washington County semiconductor and logistics expansion, combined with ongoing residential and mixed-use infill, means properties routinely carry legacy agricultural, industrial, or light-manufacturing histories that require careful environmental review before a transaction closes or a shovel breaks ground. Oregon DEQ oversight and lender due-diligence requirements add procedural layers that can stall a project if environmental work is not coordinated from the start. Our environmental services team provides Phase I and Phase II environmental site assessments, along with construction-phase environmental support, to keep your schedule intact. Coverage for Hillsboro is dispatched through our Seattle regional hub. We work directly with project engineers, owners, and contractors so that findings are communicated in terms that inform decisions rather than create confusion.
Washington County's Tualatin Valley contains a mix of alluvial soils and areas with historically high water tables, conditions that can affect subsurface investigation planning and the lateral migration of soil and groundwater impacts. Oregon's wet season, which runs roughly October through May, can influence field sampling logistics and should be factored into Phase II scheduling.
FAQ · Hillsboro
Does Oregon DEQ have requirements that go beyond a standard ASTM Phase I or Phase II scope?
Oregon DEQ maintains its own voluntary cleanup program and underground storage tank rules that can apply alongside or after ASTM E1527-21 Phase I and ASTM E1903-19 Phase II work. If a recognized environmental condition leads to a DEQ notification obligation, your environmental professional should identify that pathway early so the investigation scope and reporting format align with what the agency will expect, not just what a lender requires.
How does the Tualatin Valley's high water table affect a Phase II subsurface investigation?
Seasonally elevated groundwater in lower-lying parts of the valley can limit the usable depth of hand-auger borings and may require direct-push or hollow-stem-auger equipment to collect representative samples below the seasonal water table. Scheduling borings during drier months can reduce interference, but if the project timeline does not allow that, the investigation plan should account for potential refusal depths and groundwater sampling logistics from the outset.
We are breaking ground on a site with a prior agricultural use in Washington County. What environmental concerns are most common with that history?
Former agricultural properties in the Tualatin Valley area are commonly evaluated for pesticide and herbicide residuals, petroleum hydrocarbon impacts from fuel storage, and nitrate influence on shallow groundwater. A Phase I will document the agricultural history; if recognized environmental conditions are identified, a targeted Phase II using ASTM E1903-19 protocols can include soil sampling at former chemical storage or mixing areas to determine whether impacts are present and at what concentrations.
Which office covers environmental in Hillsboro, OR?
Field work in Hillsboro is dispatched through the Seattle, WA regional hub, about 147 miles away. Laboratory testing is performed in Sugar Land, TX under chain of custody, or in a mobile laboratory mobilized to large Hillsboro projects.
Are the technicians you send to Hillsboro certified?
Field sampling and testing in Hillsboro are performed by our ACI- and NICET-certified technicians. Environmental engineering and professional services are delivered with professionals licensed in Oregon, coordinated under one proposal.
Hiring for project coverage. Field technician openings in Hillsboro · all positions.
Scheduling & proposals
Need environmental services in Hillsboro?
Call to schedule a technician, or send project documents for a written proposal.