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Peter Hedman

Peter represents Norsk Hydro as Director of Marketing & Communications for Hydro Extrusion North America, a global aluminum and energy company with several sites in the Columbia Slough watershed. He has a deep love of nature and enjoys paddling, riding, and recreating on and around the slough with his family.  He especially enjoys helping others to experience the beauty of the watershed “hidden” within the city.

Over the past twenty years Peter has worked in a variety of roles ranging from product design and R&D to marketing and communications in the sporting goods and aluminum industries. He holds a bachelor’s degree in Mechanical Engineering from Eastern Washington University and an MBA from the University of Oregon.

Troy Clark

Troy Clark has had a 35-year close relationship with the Columbia Slough, particularly the area bordering Smith and Bybee Wetlands Natural Area (SBWNA). He believes the Columbia Slough is an awesome resource as wildlife habitat and for recreation. Along with Forest Park, the country’s largest forested park in a city limits, and SBWNA,  the country’s largest freshwater wetland in a city, the Columbia Slough is among Portland’s most stunning urban natural areas. Troy sees these three treasures as worth our time, money and affections to protect.

Bob Dolphin

Bob is a retired Owens-Illinois Plant Engineer who joined the Columbia Slough Watershed Council Board as a business representative in the late 1990s, and has continued on as a neighborhood representative since his retirement in 2012. Drawn by Council’s mission of education, restoration, and promotion of the slough, Bob enjoys kayaking the slough for the peaceful respite in this urban environment.

JJ Bjordahl

JJ has been enchanted with the Slough since the mid-1990s, having first experienced it as a flash of mysterious riparian area under the highway while enroute to downtown. Having moved south from Vancouver, WA in the early 2000s, they have spent nearly twenty years working and volunteering on local community, education, arts and environmentally focused initiatives, with nonprofits and public agencies, both in the watershed and around our greater community. They hold an interdisciplinary Bachelor of Science from Portland State and work as an Engineering Technician for Multnomah County. In their free time you can find them paddling the Slough, the Willamette, circumnavigating Cascade volcanoes, doing citizen science and looking for beautiful old trees in wilderness and forest.

Marisa Trujillo DeMull

Marisa Trujillo DeMull (she/her) is a mother, partner, and transportation engineer for Portland Bureau of Transportation. Her personal and professional life has been dedicated to uplifting the voices and labor of marginalized people. As a resident of the watershed, she is enthusiastic about bringing her unique perspective and lived experience to the Board. Her favorite thing about the slough is the variety of bird species that live here. The density of birds at every site makes it a birdwatcher’s paradise!

Daryl Houtman

Daryl serves the Council representing Environmental Services for the City of Portland with an engagement focus. He promotes, paddles, and works to enhance the slough watershed and community through funding, collaborations, and activism.

Carrie Sanneman

Carrie is a government representative on the board from Multnomah County Drainage District, where she leads the environmental program and is working to integrate floodplain management strategies that improve flood safety and the health of the Columbia Slough. She sees the watershed council as a key partner in this work. One of her favorite things about the slough is the chance for urban wildlife encounters, like glimpses of a sturgeon, nesting turtles, or a group of stags on the cross levee near MCDD headquarters. 

Adam Reese

Adam has served on the Council as a business representative since 2017.  He is an engineering geologist and co-owner of a geotechnical engineering consulting firm headquartered in the Portland Metro area. Adam holds Bachelor’s and Master’s Degrees in Geoenvironmental Studies. Adam’s history with the Columbia Slough has included environmental characterization and clean-up of contaminated sediments within the Slough and its managed tributaries, as well as upland environmental consulting related to soil and groundwater within the watershed. In addition, Adam’s professional background includes geotechnical consulting related to the levees and interior drainage system within the watershed.   

Through spending time within the watershed in a professional capacity, Adam gained an appreciation of the natural beauty of the Columbia Slough, as well as an understanding of the importance of this unique urban resource. In addition to serving on the Board and Executive Council of the CSWC, Adam is a Past-Chair of the Oregon Section of the Association of Environmental and Engineering Geologists (AEG), a Board Member on the Oregon State Board of Geologist Examiners (OSBGE), a Friend of BDI for the Business Diversity Institute (BDI), and a Past-President of the Portland Bocce League Association (PBLA). When he’s not working or serving in these roles, Adam enjoys hiking, whitewater rafting, and travel adventures with his wife and two children.

Elizabeth Robillard

Elizabeth Robillard is a senior business professional with extensive experience leading alliances and strategic partnerships for tech companies. She is currently in the alliances organization at Amazon Web Services. Elizabeth is also the Founder of the consultancy Negotiating at Work which offers coaching, consulting and practical advice on how to manage your own career and how to negotiate for yourself more effectively.

Stephen Blanton 

Stephen is the senior engineer and part-owner of a local stream restoration company. His personal and professional lives have provided the opportunity to work and play throughout the watershed. He continues to be fascinated by the interface of industrial, commercial, and residential land uses with the natural environment of the Slough whenever he birds, bikes, or hikes through the watershed.

Blake Hamalainen

Blake Hamalainen is an Environmental Manager at the Port of Portland with more than 20 years of experience in the environmental field.  Specializing in water and land resources, Blake uses his experience to protect and enhance these important resources.  

By focusing on water and land, Blake has been able to put his local experience and his biological science degree from Montana State University to good use.  Blake has worked for the Port of Portland for the past 10 years and throughout his tenure has served a critical role supporting, developing, and implementing the Port’s Water and Land programs.  Blake may spend his days at various Port facilities, but it’s the natural environment that gets him up in the morning.  

When he is not working or volunteering, Blake enjoys the outdoors and loves spending time with his wife and two daughters.