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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 »
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.
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.
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.
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.
Tuesday, 29 January 2019
Geosyntec professionals will make a substantial technical contribution at Battelle's Tenth International Conference on Remediation and Management of Contaminated Sediments at the Hilton New Orleans Riverside in Louisiana on February 11-14, 2019. Geosyntec-led contributions include four platform chairs, eight platform pre ...
Geosyntec Project and Staff Received the Outstanding Stormwater Research Project Award from California Stormwater Quality AssociationTuesday, 30 October 2018Geosyntec's project, International Stormwater Best Management Practices (BMP) Database, was honored by the California Stormwater Quality Association (CASQA) with the Outstanding Stormwater Research Project Award at CASQA's 14th Annual Conference in Riverside, California on October 16, 2018. Mark A. Lombos, P.E., Califor ...
Geosyntec Staff Featured at the 34th Annual International Conference on Soils, Sediments, Water and EnergyWednesday, 03 October 2018Geosyntec will make a substantial technical contribution at the Association for Environmental Health and Sciences Foundation (AHES) Foundation's 34th Annual International Conference on Soils, Sediments, Water and Energy at the University of Massachusetts in Amherst, Massachusetts on October 12-18, 2018. Geosyntec-led co ...
Monday, 21 May 2018
Adrienne Nemura, P.E (Michigan) and Eric Strecker, P.E., BCEE (Oregon) presented at the 2018 Water Research Foundation Conference in Atlanta, Georgia on May 8, 2018. Geosyntec staff who contributed as co-authors to these efforts are Elizabeth Toot-Levy (Ohio), Marc Leisenring, P.E., Dan Pankani, P.E., and Paul Hobson, P. ...
Geosyntec Staff Present on Groundwater Resources and Waste Containment at the Alaska Forum on the EnvironmentTuesday, 30 January 2018Geosyntec professionals Bob Anderson (Washington) and Jay Griffin (California) will present and Ben Martich (Alaska) and Sean Ragain (Oregon) will moderate sessions at the Alaska Forum on the Environment at the Dena'ina Convention Center in downtown Anchorage on February 12-16, 2018. Bob Anderson"s presentation, "Groundw ...
Thursday, 18 January 2018
Adrienne Nemura (Michigan), Robert Annear (Oregon), Rishab Mahajan (Illinois) have authored a water quality whitepaper entitled "Mixing Zone Analysis: Take Control of Permit Limits." Geosyntec's Mixing Zone Whitepaper discusses the use of mixing zones and their applicability. It also provides examples of how to incorpora ...
Monday, 13 November 2017
Geosyntec professionals will deliver three panel presentations during the Northwest Environmental Conference & Tradeshow (NWEC) at the Red Lion Hotel Jantzen Beach in Portland, Oregon on December 5-6, 2017. NWEC is in its twenty-ninth year and is the largest environmental conference and tradeshow in the Pacific Northwest ...
Thursday, 09 November 2017
Rishab Mahajan (Illinois) will be delivering a presentation entitled "Sediment Transport Modeling to Support Port and Harbor Activities" at the quarterly meeting of the Houston Chapter of ASCE's Coasts, Oceans, Ports and River Institute (HTX-COPRI) in Houston, Texas on November 14, 2017. Rishab Mahajan is a water resourc ...
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