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Business Details
43 Years
experience
Trusted Environmental & Geotechnical Services in Wilsonville
Founded in 1983, Northwest Geotech has established itself as a leader in environmental consulting, geotechnical engineering, and materials testing services. Our expertise extends to construction monitoring, special inspection, and laboratory services, including soil mechanics and asphaltic concrete testing. Accredited by A2LA and recognized by the US Army Corps of Engineers and Oregon Department of Transportation, we deliver quality-assured solutions to public and private clients across the Pacific Northwest. Joining RMA Companies in 2022 expanded our capabilities through nationwide networks of experts and state-of-the-art facilities. Our commitment to innovation ensures clients receive engineered solutions for asset management and project delivery.

With decades of experience, we remain dedicated to technical excellence and client satisfaction. Our services support municipalities, developers, contractors, and architects in navigating complex construction challenges. Through rigorous testing and certification, we uphold industry standards and regulatory compliance. Our specialized inspections and environmental consulting services address evolving infrastructure needs. Backed by ISO/IEC accreditation and regional partnerships, we serve as a trusted partner for critical engineering projects.
Services
Environmental Consulting Geotechnical Engineering Construction Materials Testing Soil Mechanics Laboratory Asphaltic Concrete Testing Special Inspection Services Aggregate Testing
Details
  • Year established: 1983
Highlights and features
  • We offer 40+ years of specialized expertise in geotechnical and environmental engineering.
  • Our laboratories meet ISO/IEC standards for rigorous materials testing.
  • We provide nationwide support through RMA Companies' technical networks.
  • We hold specialized certifications for construction material inspections.
  • Our team maintains partnerships with regional building officials associations.
Associations and certifications
  • A2LA
  • US Army Corps of Engineers
  • Oregon Department of Transportation
Services
Environmental Consulting
Environmental consulting services assess and mitigate risks associated with construction projects, including soil contamination and regulatory compliance. Our team conducts site evaluations and provides remediation strategies for public and private sector clients. These services ensure adherence to environmental regulations while maintaining project timelines.
Geotechnical Engineering
Geotechnical engineering services evaluate subsurface conditions to design foundations and earthworks for infrastructure projects. Testing includes soil mechanics, rock properties, and slope stability assessments. Our engineers provide site-specific recommendations that enhance structural safety and prevent construction delays from unforeseen ground conditions.
Construction Materials Testing
Materials testing ensures construction materials meet specified standards through laboratory and field evaluations. We test concrete, asphalt, steel, and aggregates for strength, durability, and compliance. Certification services support quality control processes for contractors and regulatory submittals.
Special Inspection Services
Special inspection services verify construction practices meet building code requirements for structural integrity. Our inspectors monitor reinforcement placement, welding, and other critical stages. These inspections ensure public safety while maintaining alignment with Oregon and Washington building standards.
Asphaltic Concrete Testing
Asphaltic concrete testing evaluates mix properties and pavement performance characteristics for roadways and surfaces. We conduct density, strength, and durability assessments to optimize pavement design. This testing ensures long-lasting infrastructure solutions for municipal and transportation projects.
Questions
What services does Northwest Geotech offer?
We provide environmental consulting, geotechnical engineering, construction materials testing, special inspection, and asphaltic concrete testing for clients in the Pacific Northwest.
Are you accredited for materials testing?
Yes, our laboratories hold A2LA accreditation to ISO/IEC standards and certifications from the Oregon Department of Transportation for construction material inspections.
How does RMA Companies partnership benefit clients?
The partnership expands our technical resources through nationwide networks of experts and state-of-the-art facilities while maintaining local project expertise.
Which regions do you serve?
We primarily serve Oregon and Washington, with expanded support capabilities across the Pacific Northwest through our national laboratory network.
What industries benefit from your services?
Our clients include municipalities, developers, contractors, architects, and engineers requiring geotechnical analysis, environmental compliance, and construction material certification.
Reviews (1)
Paul Wille
Feb 02, 2020 Report
I began working with NW Geotech over 4 years ago due to a complicated issue we had. Tom and team took a very methodical, quantitative and qualitative approach to measuring and understanding the nature of the issue on property and have since guided us through options for addressing. At all times, we have felt fully informed and well cared for by NW Geotech.