Engineering Services

Geotechnical Engineering / Soils / Foundations

Jason Engineering provides a full range of soils investigation engineering reports, geologic assessments, perc tests, soils inspection, and Technical Information Reports, Abbreviated site plans for single family residences as well as commercial projects.  We can also assist with landslide investigation and erosion hazard areas, soil treatment and stabilization methods and slope stability analysis.  We offer our services to be completed in a timely manner in order to keep progress in motion for both private and public works projects.  Our personnel have perform hundreds of soils investigation reports ranging from small residential projects to major commercial and public works projects in the Puget Sound region as well as throughout the rest of Washington. We can provide you with a quote on soils boring or test pits on your project to meet your specific project needs.  We can also provide you with a variety of options for you foundation depending upon the site conditions.

Slope Analysis & Stabilization

We can inspect your project site, gather data from the site, and prepare a detailed report with recommendations for your specific project site and application in reference to steep slopes.  The reports that we provide on slope stability analysis examine both static and dynamic analysis of the slope using various worst-case scenarios.  The analysis process examines slope stability using the method of slices procedure for determining slope stability.  Normally several thousand slice sections are analyzed using some of the most advanced software available in the industry (utilizing Geoslope’s Software Suite).

Retaining Wall Design

These services include design details for retaining walls of concrete, masonry, rockeries, or segmental block walls that range from small landscape details to major earthwork improvements and renovation.  We have provided retaining wall design services to a wide variety of landscaping situations for many different and sometimes difficult native settings.

Pavement Design & Analysis

Roads, parking lots, and driveways may crack, fail or become otherwise unusable over time.  We can evaluate the existing conditions and provide solutions for repair and/or replacement of the pavement as well as offer services to ensure a quality final product.  Our personnel have monitored and inspected the construction and overlay of hundreds of miles of pavements throughout the entire Pacific Northwest.  We have often been able to provide our clients with design recommendations and changes with the associated cost savings that have paid for our services many times over on a project.

Environmental Services

  • Phase I&II Environmental Investigations
  • Storm Water Pollution Prevention Plans (SWPPP)
  • Certified Erosion and Sediment Control Leads (CESCLs)
  • Construction Stormwater Permit Assistance, permit compliance, stormwater monitoring and monthly reporting to Ecology
  • Soil and water sampling for metals and hydrocarbons
  • Well sampling Construction materials testing