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J. Riley Conkin, L.G., L.H.G.


Principal Geologist
Seattle, Washington

Adv. BS Geology
30 years’ experience

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Riley is a Licensed Geologist and Licensed Hydrogeologist in Washington, with more than 30 years of experience in contaminant hydrogeology and cleanup. His expertise includes investigation and delineation of contamination in soil and groundwater, implementation and management of soil and groundwater cleanup actions, project planning, and regulatory negotiation. Riley has provided technical support for a number of cost allocation projects with multiple responsible parties, and mediation and litigation support for numerous projects.


  • Licensed Geologist, Washington

Professional Certifications and Registrations

  • LHG Washington

Fun Facts

Outside of work, Riley enjoys numerous activities, including cycling, backcountry and downhill skiing, and sailing. Riley and his wife are avid supporters of the Bellevue lacrosse and soccer programs, and enjoy spending time watching their children play these sports. If you can’t reach him at his desk at lunchtime, Riley and his colleagues probably are out exploring the single-track mountain bike trails on neighboring Tiger Mountain.

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