Engineering Geology and Geotechnical Services
CORE GeoEngineering, Inc. specializes in engineering geology, geotechnical evaluations, and construction monitoring services across Oregon and southwestern Washington. We are passionate about solving complex geologic challenges, providing expert consultation from project conception to completion for residential, commercial, industrial, and municipal developments.
We pride ourselves on our collaborative approach, working closely with developers and contractors to ensure project success. We understand that every project is unique and costly. Our dedicated team engages with you from the outset to provide tailored geotechnical solutions to identify potentially problematic geologic site conditions, and seamlessly integrate our recommendations with your plans.
From initial consultation to final inspection, our engineering staff will ensure responsive communication and a deep understanding of your project's unique needs, delivering exceptional results every step of the way. This approach is designed to lower your risks, costs, and hassles. By fostering open communication and a thorough understanding of your needs, we streamline the design, permitting, and construction process, address potential challenges proactively, and enhance overall project efficiency.
We provide competitive billing rates for our clients. Partner with us for a geotechnical engineering experience that aligns perfectly with your vision and goals, delivering exceptional results every time.
Core GeoEngineering maintains professional and general liability insurance.
Geologic Hazard Assessment
•Geologic Hazard Assessment Reports
•Coastal Engineering Geologic Reports
•Landslide Hazard Study and Slope Stability Analysis
•Seismic Hazards and Soil Liquefaction Assessment
•Geologic Site Characterization and Recommendations for Development
Geotechnical Site Investigation
•Geotechnical Site Investigations
•Foundation Subgrade and Allowable Bearing Capacity Recommendations
•Flexible Pavement Investigation, Assessment, and Design
•Soil Infiltration Testing
•Groundwater investigations
Seismic Site Characterization
CORE GeoEngineering offers in-house shear wave velocity (Vs) testing using Refraction Microtremor (ReMi) methods to meet the site-specific seismic analysis requirements of ASCE 7-22, the 2025 Oregon Structural Specialty Code, and IBC 2024.
Under current building codes, default site class assumptions are increasingly restricted. Site-specific Vs30 measurements are now required for many projects to determine accurate seismic site classification and develop multi-period response spectra (MPRS) for structural design.
ReMi testing can be integrated into standard geotechnical investigations or performed as a standalone service for structural engineers, geotechnical consultants, and building departments requiring code-compliant seismic site characterization.
•Site-Specific Vs30 Profiling for ASCE 7-22 Compliance
•Seismic Site Class Determination (A through F)
•Data for Site-Specific Ground Motion Hazard Analysis
•1D and 2D Shear Wave Velocity Modeling
•Depth to Bedrock Determination
•Subsurface Exploration in Areas Where Drilling or Excavation Is Limited by Shallow Bedrock or Difficult Access
•Velocity Profiles for Landslide and Slope Stability Investigations
Construction Monitoring
•Timely field reports
•Foundation Subgrade Inspections
•Site Grading Inspections
•Soil, Aggregate, and Asphalt Density Testing
•ACI Concrete and ICC Reinforcing Steel Inspection
•Drywell Performance Testing
Laboratory Services
•Proctor Moisture-Density Relationship Testing
•Grain Size Analysis
•Moisture Content
•Rice Density of Asphaltic Concrete
•Expansive Index Testing
•Atterberg Limits (Liquid Limit and Plasticity Index)
Retaining Wall Design
•Lock+Load Retaining Walls
•Allan Block Retaining Walls
•Keystone Retaining Walls
•Ultrablock Retaining Walls
•StoneTerra Retaining Walls