St. Johns Landfill Dike Stabilization, ACEC Oregon Grand Award

Cornforth Consultants has been providing geotechnical services to various industries since 1983. Since the firm was founded, we have focused on supporting owners and agencies responsible for constructing, upgrading, or managing high-value infrastructure. Our team consistently provides sound and cost effective solutions for project with complex geologic and geotechnical challenges.

A list of representative clients is shown below.
​

---

​Earth & Rockfill Dams | Reservoirs, Canals, and Levees | Spillway Safety Inspections | Spillway Safety Inspections
Landslides and Rockfall​ | Earthquake Engineering | Geologic Hazards | Geotechnical Site Characterization | Hydrogeology | Expert Witness | Concrete Locks & Dams | Geotechnical Instrumentation | Deep & Shallow Foundations | Geotechnical Manuals

---

• U.S. Army Corps of Engineers
• PacifiCorp
• City of Portland Water Bureau
• Alaska Power and Telephone
• Seattle City Light
• Clark County, WA
• Idaho DOT
• Marathon Oil Company
• British Columbia Ministry of Attorney General
• Montana DOT
• Bonneville Power Administration
• Waste Connections
• Hecla Greens Creek Mining Company

• Portland General Electric
• City of Astoria, Oregon
• U.S. Attorney General
• Oregon DOT
• Federal Highway Administration
• Portland Metropolitan Service District (Metro)
• Eugene Water & Electric Board
• Washington DOT
• Northwest Natural Gas
• State of Washington Attorney General
• Alaska DOT&PF
• New York DOT
• Port of Camas-Washougal