George Machan has 
years of
geotechnical engineering experience

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Mr. Machan has years of national engineering experience, with significant specialization in landslides, such as reconnaissance, investigation, instrumentation monitoring, analysis, evaluation of mitigation options, design, and construction advice/troubleshooting. In addition, he has provided peer reviews, forensic studies and expert opinions/testimony concerning landslides and slope stability. Landslide and transportation projects have been conducted for State DOT's, FHWA, and other agencies/owners.

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

  • Alba Natural Gas Facility Landslide Mitigation, Bioko, Equatorial Guinea 
  • Anchored Soldier Pile Wall, Caribou Creek, Glenn Highway, Alaska 
  • Hoover Slides Landslide Analyses and Peer Reviews, Provo Canyon, Utah 
  • Snowbasin Access Road, Huntsville, Utah 
  • Delaware Avenue Landslide, Bethlehem (Albany), New York 
  • Bonners Ferry Landslide, Emergency Response and Mitigations, State Highway 95, Idaho 
  • Embankment Slope Failure, Geotechnical Expert Witness Consultation for FHWA, Banks - Lowman Highway, Idaho
  • Rockslide Mitigation Investigation, Garden Valley, Idaho 
  • Siskiyou Pass Retaining Wall Failure, Interstate I-5, Ashland, Oregon 
  • Parks Highway Slide next to Open Pit Mine, for Alaska DOT&PF, Ester, Alaska 
  • Richardson Highway Slide, Richardson, Alaska 
  • Osweg Creek Landslide Mitigation, State Highway 26, Elsie, Oregon 
  • Coquille Reroute of State Highway 42, Coquille, Oregon 
  • Ditch Camp Landslide, Sandy, Oregon 
  • Three Capes Scenic Loop Road Slide, Tillamook County, Oregon 
  • Snake River Avenue Landslide, Lewiston, Idaho 
  • Jordan Road Slide, Round Butte Reservoir (Lake Billy Chinook), Madras, Oregon