Sage Geotechnical, LLC
Strategic. Accurate. Geotechnical Engineering.
About the firm
Sage Geotechnical provides geotechnical engineering services across the Puget Sound region and the greater Pacific Northwest. Co-founded by Calvin McCaughan, PE, and Daniel Simpson, PE, it brings decades of project experience to geotechnical investigations, foundation and retaining wall design, landslide mitigation, and expert witness work. Operating from Olympia, Washington, the practice pairs technical rigor with a commitment to practical problem-solving and responsive service.
- Team
- Micro
- Firm type
- Geotechnical Engineering
People
Calvin McCaughanCo-founder and Principal
Daniel SimpsonCo-founder and Principal
Annabel IrwinProject Manager
Lance LevineSenior Engineer
Capabilities
Geotechnical Investigations
Service websiteSubsurface investigations including drilling programs, soil sampling, lab testing, and engineering reports for design.
- Advanced Laboratory Soil Testing
Detailed soil testing programs supporting foundation and slope design.
Foundation Design
Service websiteShallow and deep foundation design for axial and lateral loads, including spread footings and pile systems.
Retaining Wall Design
Service websiteRetaining wall analysis and design including anchored walls and mechanically-stabilized earth (MSE) systems.
Landslide Investigations and Mitigation
Service websiteGeotechnical assessment and engineering for unstable slopes, from initial investigation through monitoring and permanent stabilization.
- Slope Stability Evaluation
Assessment of slope conditions and failure mechanisms to support informed site decisions.
- Landslide Monitoring
Instrumentation and ongoing observation of active or at-risk slope areas.
- Remedy Design
Engineering of slope stabilization measures and landslide repair systems.
Critical Areas Studies
Service websiteGeotechnical assessments required for jurisdictional critical areas review, including steep slopes and seismic hazard areas.
Constructability Reviews
Service websiteReview of construction documents and field conditions for geotechnical constructability and risk.
Emergency Response
Service websiteRapid field mobilization and geotechnical assessment to address critical site conditions before they escalate.
Expert Witness Services
Service websiteGeotechnical expert witness testimony and litigation support.
Stormwater Infiltration Studies
Service websiteInfiltration receptor characterizations and feasibility studies for stormwater management.
Deep Excavation and Earth Support
Service websiteAnalysis and design of deep excavation methods and temporary earth support systems.
Industries
Wastewater · Water Supply · Transportation · Marine · Education · Stormwater & Flood Control · Commercial · Government · Parks & Open Space · Sports & Recreation · Residential
Projects
No projects listed yet.