Our Services

Founded in 1979, Triangle has been integral in cultivating durable decisions on some of the most pressing environmental issues of the last 40 years. To help foster informed decisions about natural resources and the built environment, Triangle takes a two-pronged approach: 

Public Policy

We provide neutral, third-party and project management services to government, private and non-profit leaders to ensure inclusive participation, clear access to information, and lasting decision-making for today’s natural resource, transportation, land-use, and public policy decisions. Services include:

  • Facilitation & Mediation
  • Public Involvement
  • Conservation Planning
  • Tribal Engagement
  • Graphic Facilitation & Recording
  • Strategic Planning & Organizational Development

Environmental Education

We help public and private agencies provide education, community outreach, and technical assistance to ensure that schools and other community groups have the information they need to make sustainable environmental decisions. 

  • School-based Youth Education
  • Community Education & Support
  • Sustainability Assistance
  • Waste Reduction Programs Technical Assistance

Triangle’s Commitment Statement

We stand firmly with Black Lives Matter and all marginalized people, and those working toward racial justice, equity, and inclusion. We stand with all oppressed people who live in a world made dangerous and unjust by systemic racism.  History and lived experience matter, and because of that, we declare ourselves as not impartial and not neutral about this issue – not in our private lives and not in our work.

For the full statement, please follow this link to our Diversity and Equity Page

Triangle’s Community Engagement Statement

Community engagement at Triangle Associates is rooted in concepts of equity and justice and aligns with our commitment to diversity, equity and inclusion. Triangle’s community engagement strategic plan guides us to make connections between communities, governments and the private sector to foster individual and institutional change with the goal of providing a framework to guide the strategies and community engagement practices for Triangle’s work. Our efforts are grounded in the premise that community involvement is critical to the public decision-making process and empower communities to take active roles in the decisions that affect their lives and shape their environments. 

For the full statement, please follow this link to our Community Engagement Page

Triangle News

Triangle Project Featured in 2022 EPA ECCR Report

Since 2020, Triangle Associates’ Portland, Oregon team has partnered with the U.S Environmental Protection Agency (EPA) Region 10 staff to support the Portland Harbor Collaborative Group. This group was designed by community leaders to provide an inclusive forum for those affected by or interested in the Portland Harbor Superfund Site cleanup. The overall goal is to facilitate a variety of open discussions between members of multiple groups, regardless of each group’s specific scope. Each year, [...]

Triangle Team Comes Together for Diversity, Equity, and Inclusion Workshop

Since 2017, Triangle’s Diversity, Equity, and Inclusion (DEI) Plan has guided the work we do in order to further embed DEI principles into our work, Triangle staff from Seattle, Portland, Leavenworth, Bellingham, and Miami came together for a day-long DEI workshop in late March. Our six member DEI Committee designed the workshop, alongside DEI Consultant Karama Blackhorn, with a goal of translating DEI values into DEI skills through a set of “DEI Competencies.” These DEI [...]

Triangle Acquires Veda, Adding a Bellingham Location

We are very excited to announce that as of January 1, 2023, Triangle has acquired Veda Environmental, a women-owned small business based in Bellingham, WA.  Now called the Triangle Associates Bellingham Office, this acquisition expands Triangle’s ability to work in transboundary as well as Northwest and Northeast Washington state issues. With an impressive track record over 14 years in business, we are thrilled to have Hilary Wilkinson, Meg Harris, Melanie Del Rosario, and Marie Rothlisberger [...]