Cornforth Consultants

Cornforth Consultants provides services in geotechnical engineering, engineering geology, landslide analysis and remediation, seismicity, rock mechanics, hydrogeology, geotechnical instrumentation and litigation. The firm offers the services of 19 professional engineers and engineering geologists, including 8 senior staff with 20 to 45 years of experience in the Pacific Northwest.

Earth and Rockfill Dams: dam safety evaluation, dam siting, field explorations, borrow sources, site geology, seismicity, site hydrogeology, embankment design, instrumentation, and construction quality control.

Seismicity: regional seismicity, design earthquakes, evaluation of active faults, liquefaction analyses, dynamic soil-structure interaction, slope stability, and ground response.

Landslides (through Landslide Technology Division): geologic reconnaissance, site investigations, field instrumentation, stability analyses, and remedial measures. www.landslidetechnology.com

Rock Mechanics: rockfall hazard assessment, rock slope mapping and stability evaluation, hazard mitigation, core sampling, rock mass classification, quarries, tunnels, and cut slopes.

Individual Consultation: Specialist geotechnical consulting on major projects, feasibility-level evaluation, and “second opinion” advice.

Representative Clients:

U.S. Army Corps of Engineers • Portland General Electric • Union Pacific Railroad • Bonneville Power Administration • City of Portland Water Bureau • U.S. Attorney General • PacifiCorp • Oregon DOT • Seattle City & Light • Federal Highway Administration • Clark County, WA • Portland Metropolitan Service District (Metro) • Idaho DOT • Eugene Water & Electric Board • U.S. Forest Service • Utah DOT • British Columbia Ministry of Attorney General • Northwest Natural Gas • Montana DOT • State of Washington Attorney General • Multnomah County, OR • Alaska DOT • Tacoma Public Utilities • New York DOT