Andy Vessely

Civil Engineer

1984 - present
Senior Associate Engineer
Cornforth Consultants

1978 - 1984
Project Geotechnical Engineer
Shannon & Wilson
Portland, Oregon

1979 M.S.
Geotechnical Engineering Utah State University
Logan, Utah

1977 B.S.
Civil Engineering
Utah State University
Logan, Utah

US Society on Dams (USSD)

Member, Association of
State Dam Safety Officials

Member, American Society
of Civil Engineers

Member, International Society of Soil Mechanics
and Foundation Engineering



Randall J. Hill
Staff Consultant

Mr. Hill has over four decades of experience as a Geotechnical Engineer, with strong emphasis on dam design and safety evaluations. He has developed extensive expertise in the management of complex geotechnical and multi-discipline projects.

As a result of Mr. Hill's dam engineering experience, he has been accepted by the Federal Energy Regulatory Commission (FERC) as a qualified Independent Consultant on embankment dams, reservoirs and water-conveyance canals. As such he has been retained by utilities and water-provider clients in performing dam safety evaluations and reviews; participating in numerous Potential Failure Mode Analyses (PFMA) for major dam structures; and developing recommendations and designs for dam safety modifications, operational procedures and performance monitoring programs.

A few projects representative of Mr. Hill’s experience include:

  • Hagg Lake/Scoggins Dam Raise Geotechnical Review, Gaston, Oregon
  • Carmen-Smith Hydroelectric Project Dam Safety Evaluations/Potential Failure Mode Analyses (FERC Part 12), McKenzie Bridge, Oregon
  • Biglow Canyon Wind Farm Site Investigations/Geotechnical Design Reviews, Morrow County, Oregon
  • Barney Reservoir Dam Raise and Reservoir Expansion, Coast Range Mountains, Oregon
  • One Pacific Square Building Foundations, Portland, Oregon
  • Trojan Nuclear Power Plant Multiple On-site Building Foundation Investigations/Designs, Rainier, Oregon
  • Shevlin Ridge Developer Litigation, Bend, Oregon.
  • Proposed Kasidaya Creek Hydroelectric Diversion Dam, Juneau, Alaska
  • U. S. Highway 97 Major Bridge Replacements, Klamath Falls, Oregon
  • Oglala and White Clay Dams Site Investigations/Dam Safety Reviews, Pine Ridge, South Dakota
  • Martin Marietta Aluminum Plant Containment Embankment for Large Evaporation Reservoir, Goldendale, Washington
  • Beaver-Trojan New High Voltage Power Transmission Line, Columbia County, Oregon
  • McGuire Dam Raise and Reservoir Expansion, Coast Range Mountains, Oregon
  • Sulphur Bank Mine Tailings Erosion Control/Mitigation Plans, Lake County, California
  • Blue River Auxiliary Dam Foundation Liquefaction Evaluations, Blue River, Oregon
  • Bull Run Dam No.2 FERC Part 12 and PFMA Safety Evaluation, Sandy, Oregon