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Mark Havighorst, P.E.

headshot of Mark Havighorst

Principal Engineer, Portland Office Manager
Portland, Oregon

MS Civil/Environmental Engineering
BS Mechanical Engineering
21 years experience

Contact Information
(503) 280-4628


Mark has 21 years of experience providing consulting services for projects involving property acquisition, cleanup, redevelopment, and compliance. He has worked with clients in wood products, high-tech, petroleum, and transportation industries; developers; and attorneys on site cleanups throughout the Pacific Northwest. As a Professional Engineer licensed in Washington, Oregon, and Montana, Mark’s areas of expertise include environmental due diligence, Remedial Investigation and Feasibilities Studies, remedial action and removal action planning and implementation, and construction management.

Fun Facts

Mark has a number of interests that occupy his time away from the office. He has been an avid and frustrated musician since childhood, enjoys various athletic pursuits, and has an ongoing unhealthy relationship with old wooden boats. Mark also loves traveling to off-beat places in search of the perfect cycling route and cold beer.


  • Licensed Engineer MT
  • Licensed Engineer OR
  • Licensed Engineer WA

Professional Certifications and Registrations

  • Transportation Worker Identification Credential

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