Geotechnical Services

LeRoy Surveyors & Engineers, Inc. (LS&E) provides geotechnical and geological engineering services to engineers, architects, municipalities, land developers and contractors in the Pacific Northwest. We support all phases of construction—from initial site observations and design, construction monitoring and  evaluations to project completion.

Geotechnical services are the foundation for stable development. LS&E’s team have extensive geotechnical experience and are committed to providing you cost-effective, functional and innovative solutions. Questions and consultation about LS&E’s geotechnical services can be addressed to Bill by phone at (253) 848-6608 ext. 103, or by email at BCreveling@lseinc.com.

GENERAL GEOTECHNICAL SERVICES  

  • Initial Site Observations
  • Regulatory Compliance
  • Critical / Sensitive Area Evaluations
  • Construction Phase Services
  • Pavement Design (including Pervious Concrete and Asphalt)
  • Slope Stability Studies
  • Earthwork Specifications

SOILS & ROCKS—GEOTECHNICAL SERVICES

  • Subsurface Explorations
  • Low Impact Development Soil Analysis and Planning
  • Soil Infiltration Studies
  • Erosion and Sediment Control Plans

GEOTECHNICAL CONSTRUCTION SERVICES

  • Sub-Grade Observations
  • Project Plans and Specifications Compliance
  • Grading and Construction Monitoring

LARGE, ONSITE SEWAGE FACILITIES

  • Sewer System Analysis and Design
  • Collection Systems (Gravity and Pressure)
  • Pump Stations
  • On-Site Disposal Systems (Septic)
  • Comprehensive Sewer Planning
  • Method II Analysis
  • Step System Design
  • Grinder System Design
  • Residential Subdivision Water Treatment Design
  • Sanitary Sewer Extension Design
  • Water Treatment Engineering Reports
  • Biological Treatment Systems (Aerobic and Anaerobic)  

STORMWATER MANAGEMENT

  • Drainage Basin Studies
  • Stormwater Detention/Retention Systems
  • Stormwater Collection Systems
  • LID (Low Impact Development) Stormwater Plans
  • 100 Year Floodplain Analysis
  • Peak Flow Analysis
  • Sedimentation and Erosion Control
  • Network Analysis
  • Downstream Analysis
  • Stormwater Management Plans
  • Pothole Analysis