Pacific Northwest

Columbia West has provided geotechnical construction monitoring and special inspection services for several BNSF railroad projects located throughout the Pacific Northwest. Projects include rail mainline, siding, and yard improvements. Services include nuclear moisture density gauge testing, reinforced concrete inspection, shotcrete inspection, retaining wall backfill testing, and ballast and base aggregate laboratory testing for specific gravity, sand equivalent, fractured face content, maximum dry density, and hardness.

Skills Needed:

Geotechnical construction monitoring
Special inspection