Geotechnical & Environmental Drilling

Seattle, Washington Office

Western States Soil Conservation, Inc. supports geotechnical and environmental drilling projects throughout Washington from our Seattle office, working in coordination with our headquarters in Hubbard, Oregon. Our crews bring decades of drilling experience and a versatile equipment fleet to urban, industrial, transportation, and waterfront sites across the greater Seattle and Puget Sound region.

Seattle Office Supporting Washington Projects

Our Seattle location at 6271 Airport Way S positions us close to major corridors and industrial zones, allowing efficient mobilization to projects in Seattle, Tacoma, Everett, the I‑5 corridor, and surrounding communities. This satellite office enhances responsiveness for Washington-based engineers, agencies, and contractors who need local support backed by a proven regional drilling contractor.

Drilling Services Available from Seattle

The Seattle team provides the same core geotechnical and environmental drilling services available from our Hubbard headquarters, tailored to Washington project requirements. Typical work includes:

  • Geotechnical soil borings and sampling for foundations, roadways, bridges, and utilities
  • Environmental investigations on industrial, commercial, and redevelopment sites
  • Monitoring and recovery well installation where specified
  • Test borings for retaining structures, slopes, and waterfront improvements

We coordinate closely with your geotechnical or environmental consultant to execute boring programs safely and efficiently in busy urban settings.

Drilling Methods for Washington Conditions

To address the variety of soils and geologic conditions found across Washington, our Seattle-area crews utilize multiple drilling methods sourced from our shared equipment fleet:

  • Hollow Stem Auger for many geotechnical borings in overburden and fill
  • Mud Rotary for deeper investigations and variable formations
  • HQ Coring where rock and hard strata require detailed logging
  • Push Probe / Direct Push for shallow environmental and geotechnical explorations

We select appropriate rigs and tooling based on your boring plan, site access, and required depths.

Limited-Access & Urban Drilling in Seattle

Working in and around Seattle often means tight access, low clearances, and sensitive surroundings. Our team is experienced with:

  • Low overhead clearance drilling beneath structures, inside buildings, and in parking garages
  • Tight alley, sidewalk, and right-of-way locations with limited footprint
  • Over-water and near-waterfront work along rivers, harbors, and piers
  • Crane-lift and barge-supported operations for marine and heavy civil projects

We collaborate with project stakeholders to sequence work, manage traffic or pedestrian impacts, and maintain safe work zones.

Regional Clients & Project Experience

Western States Soil Conservation has supported projects for many of the Pacific Northwest’s leading geotechnical and environmental firms, along with public agencies and infrastructure owners. Washington-focused clients and project partners include:

  • Multidisciplinary consultancies such as Jacobs, WSP USA Inc., AECOM, Terracon, and Intertek PSI
  • Geotechnical specialists including GeoDesign, GeoEngineers, GRI, and others
  • Public transportation and municipal agencies, utilities, and port authorities

These partnerships span transportation corridors, municipal improvements, industrial expansions, and environmental remediation projects.

Licenses, DBE Status & Washington Compliance

Our Seattle operations benefit from the same robust licensing and certification foundation that supports our Oregon headquarters. For Washington projects, this includes:

  • Washington UBI#: 602628598
  • Washington Contractor’s License#: WESTESS943NH
  • DBE Certified Business (Washington): No. D2F0028673
  • Bonded licensing with the Washington Department of Ecology and OWRD
  • Multiple city-level licenses across the region

This framework helps clients meet contract requirements for licensed, bonded, insured, and DBE-certified drilling contractors.

Schedule Your Seattle Drilling Project

Whether you are planning a single test boring or a multi-rig program across several sites, our Seattle office can help coordinate the right rigs, crews, and schedule.

Send us your scope, boring plan, and desired schedule, and our team will respond promptly with availability, pricing, and any recommendations to streamline mobilization and fieldwork.