Sean Ragain, R.G.

Sean Ragain is a Senior Principal Geologist based in Oregon with more than 25 years of experience focused on providing hydrogeologic and environmental consulting services to both private industry clients and governmental agencies. Sean leads soil and groundwater characterization studies under both the federal CERCLA and RCRA and State programs throughout the western United States, Alaska and Pacific Islands.


He also manages the closure and reuse of contaminated properties formerly used in aerospace, forest products, agricultural, chemical, manufacturing and storage, and active and formerly-used Défense sites. He routinely provides technical support and analyses to attorneys on complex environmental and groundwater issues related to property development, insurance cost recovery, and land use planning. He manages the design and implementation of a wide range of remediation systems utilizing a variety of clean-up technologies for groundwater and soil. He has extensive experience in the management of remote projects ranging from rural Alaska to remote Pacific Islands and the high desert.

In addition to his consulting practice, Sean routinely presents his environmental and water resources restoration work in peer reviewed journals and at technical conferences across the United States.

Contact Sean Ragain at This email address is being protected from spambots. You need JavaScript enabled to view it. or +1-503-222-9518.

Career Summary: Sean Ragain, R.G.

  • Specialties: Site Investigation and Remediation; Groundwater Assessment and Remediation; Sediment Assessment and Remediation
  • Practice Areas: Contaminated Site Assessment and Cleanup
  • Disciplines: Earth Sciences, Hydrogeology
  • Education: B.S., Geology, Kent State University, 1988
  • Registration: Oregon, Registered Professional Geologist, 1829; Washington, Licensed Geologist, 694; Idaho, Registered Professional Geologist, 990
Geosyntec Consultants
Geosyntec is a consulting and engineering firm that works with private and public sector clients to address new ventures and complex problems involving our environment, natural resources, and civil infrastructure.

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