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Mark Havighorst, P.E.

headshot of Mark Havighorst

Principal Engineer
Portland, Oregon

MS Civil/Environmental Engineering
BS Mechanical Engineering
23 years’ experience

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Mark has 23 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 Investigations and Feasibilities Studies, remedial action and removal action planning and implementation, and construction management.

Fun Facts

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


  • Licensed Engineer, Montana
  • Licensed Engineer, Oregon
  • Licensed Engineer, Washington

Professional Certifications and Registrations

  • Transportation Worker Identification Credential
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