Tetra Tech works with small and large businesses, universities, non-governmental organizations, as well as other U.S. and non-U.S. organizations. These businesses form a network of subcontractors that serve Tetra Tech's public and private sector clients in every region of the world.

If your organization has experience in any of Tetra Tech's eight sectors, or if your firm can provide support in areas such as logistics, office supplies and services, translation and interpretation, or courier services, download our Resource Organization Questionnaire, and send it, with a copy of your organization’s capability statement (or other description of the services you provide), to This e-mail address is being protected from spambots. You need JavaScript enabled to view it or to the following address:

Tetra Tech
Attn: Oriana Shaplin
159 Bank Street, Suite 300
Burlington, VT 05401 USA

U.S. Small Business Opportunities
In the U.S., Tetra Tech is especially interested in working with small businesses from the following categories: 

• 8(a)-certified
• small disadvantaged
• women-owned
• Historically Underutilized Business (HUB) zone
• disabled veterans

We are also interested in working with private volunteer organizations that are run by socially and/or economically disadvantaged people.