Geosyntec Portland, Oregon Office

Each of our offices can assist clients with our complete range of proven and innovative engineering and scientific services from our global network of leading consultants. See a list of our practice areas »

Address: 920 SW Sixth Avenue, Suite 600, Portland, OR, 97204, USA

Telephone: 503-222-9518

Geosyntec's Portland office is committed to sustainability and reducing our impact on the environment. Here are public transit and other non-car options you can use to conveniently visit our office:

TriMet offers five light rail lines including Red Line service direct from Portland International Airport (PDX) to our front door. Numerous bus lines run within 1-2 blocks.
Portland Streetcar's North-South line is 3-4 blocks away.
Biketown bike share is located just outside our front door.

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Principal Consultants

Robert Annear, Ph.D., P.E.

Robert Annear is a Senior Principal Water Resources Engineer based in Oregon with more than 18 years of experience focused on the development and calibration of hydrodynamic and water quality models for local, state and federal agencies, law firms, and clients in the mining, paper, aviation, hydropower, and water supply sectors. Rob specializes in guiding clients through environmental permitting at the federal, state, and local levels. He also conducts assessments of complex surface w ...

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Eric Strecker, P.E., BCEE

Eric Strecker is a Senior Principal Water Resources Engineer based in Oregon with more than 30 years of experience focused on the design, monitoring, and evaluation of stormwater best management practices (BMPs) and the development of major project and watershed master plans. Eric has provided technical direction and assistance to public and private sector clients in stormwater master planning, National Pollutant Discharge Elimination System (NPDES) permitting, total maximum daily loa ...

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Howard Cumberland

Howard Cumberland is a Senior Principal Marine Scientist with more than 25 years of experience focused on remedial strategies for clients as well as developing and implementing remedial investigation, design, and restoration solutions associated with contaminated sediments and waterfront development activities. Howard routinely works with clients on strategic planning during negotiations with regulatory agencies and negotiations among other PRPs with divergent interests. Focusing on w ...

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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 use ...

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Marc Leisenring, P.E.

Marc Leisenring is a Principal Water Resources Engineer based in Oregon with more than 15 years of experience focused on stormwater master planning, watershed and storm system modeling, environmental data analysis, regulatory compliance, and water quality management. Marc has developed water quality models and decision support tools for clients to support environmental impact analyses and TMDL assessments, prepared and implemented monitoring plans, and worked with academics, regula ...

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