O'Neill Environmental Services is a Bellevue-based company specializing in providing quality inspections, construction materials testing, and environmental services for complex transportation, infrastructure, and commercial projects. With expertise in rail, roadways, tunnels, bridges, waterfront facilities, airports, and buildings, they offer a range of services including independent QA/QC, environmental permitting, planning, and onsite support, as well as specialty engineering design services.
Accredited by WSDOT, WABO, A2LA, and ISO-9001 compliant, O'Neill Environmental Services is known for its custom transportation infrastructure quality programs, special inspections, materials testing, and certified DBE MBE firm status. They are proud partners with leading transportation public agencies in the region, providing comprehensive solutions for construction projects.
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