Confluence Environmental Company

Confluence Environmental Company delivers a variety of environmental, infrastructure, and development projects.

We offer services in environmental science, project management, and regulatory strategy and compliance. Our team includes fish and wetland scientists, built and natural environment planners, regulatory and permitting specialists, and GIS and remote sensing experts. We ensure that each project is staffed with an outstanding team that can successfully deliver strategic solutions. Read more about our services here.

Our mission: To improve our community through effective and efficient solutions to our clients’ complex needs, while fostering a positive work place of innovation and opportunity.


Thanksgiving – We are grateful to live and work in the great Pacific Northwest! We also are appreciative of our clients and colleagues who have made our success possible. As we enter the season of thanks and of giving, Confluence has contributed to 15 nonprofit organizations that enhance our community. The following organizations were selected by our employees: Coalition Ending Gender-Based Violence, Evergreen Mountain Bike Alliance, Experimental Education Unit at the Haring Center, Forterra, Habitat for Humanity in Whatcom County, KUOW, Long Live the Kings, Northwest Harvest, Puget Sound Restoration Fund, Salish Sea Expeditions, SeaDoc Society, Seattle Aquarium, The BLOCK Project, The Nature Conservancy, and Wild Steelheaders United of Trout Unlimited. Best wishes to you and yours for a healthy and happy holiday season!


November – This fall, Confluence welcomed Amy Groesbeck, Project Biologist, and Kelly Muething, Staff Scientist. Amy has a Master’s degree in coastal resource management, and 8 years of experience in nearshore applied ecology. Amy will focus on shoreline permitting and environmental documentation associated with marine and freshwater projects. Kelly recently graduated with an M.S. in marine resource management. Kelly will work on marine and freshwater projects, and expand her knowledge of regulations regarding marine resource management. Welcome to the team, Amy and Kelly!

August – Confluence welcomed two new team members this summer. Eric Doyle is our new Senior Aquatic Ecologist. Eric is an interdisciplinary environmental specialist with 21 years of experience analyzing environmental impacts to fish and other aquatic organisms in freshwater, estuarine, and marine environments. He focuses on projects involving habitat monitoring and restoration/protection strategies. Eric is also a regulatory compliance specialist, with expertise in Endangered Species Act Section 7 compliance, the National Environmental Policy Act, and the Marine Mammal Protection Act. Welcome, Eric! In addition, we are pleased to announce that our summer intern is now our Staff Scientist! Suzanne Vieira is now an official member of the Confluence team and has hit the ground running on many project types, including wetland delineations, fish handling and species identification, and permit preparation. Suzanne also recently received a Wetland Professional in Training certificate from the Society of Wetland Scientists – her first step toward earning Professional Wetland Scientist certification. Congratulations, Suzanne!

May – Confluence now has a Certified Ecological Restoration Practitioner! Kerrie McArthur, Senior Biologist, recently received CERP certification from the Society of Ecological Restoration. A designation of CERP indicates achievement of a high standard of knowledge and experience in the field of ecological restoration. Kerrie is now one of 14 individuals with CERP status in Washington State – a truly distinguished accomplishment! Congratulations, Kerrie!

January – Confluence has been certified as a Small Business Enterprise (SBE) by the Washington State Office of Minority and Women’s Business Enterprises. With this certification, we can now help agencies and prime consultants meet their DBE goals. For more information, see the “Search Certified Firm Directory” button on the OMWBE website.