Tetra Tech’s Valued Partners represent a special subset of our supplier network—service providers with whom we have an established relationship that extends beyond a single project, and where a joint commitment exists to work together. Our success stories speak for themselves.

A Valued Partner can be a company of any size, working with any of Tetra Tech’s global operations. They comprise national and federal government service providers, commercial partners, entities owned and operated by Native/Aboriginal interests, and niche firms that offer highly-specialized services.

The combined strengths of Tetra Tech and our Valued Partners allow us to access new markets, provide unique solutions to our customers, and improve local execution capability. Tetra Tech wants to be your first choice when selecting an organization with which to work.

Highlighted Partnerships

		Tetra Tech and Restoration Services, Inc. Provide a Seamless Team for DOE

Restoration Services, Inc.

Restoration Services, Inc. (RSI) is a woman-owned, small business based in Oak Ridge, Tennessee. Established in 1996, RSI has more than 15 years of experience completing environmental restoration projects, nuclear waste handling, and facility decommission support. The RSI-Tetra Tech relationship began in 2008 when the companies collaborated to win the Department of Energy’s Portsmouth (Ohio) Environmental Technical Services (PORTS ETS) Environmental Management contract.

TerranearPMC and Tetra Tech: A Genuine Strategic Partnership


Tetra Tech and TerranearPMC have worked together on joint pursuits nationwide, providing environmental remediation, compliance, radiological waste management, energy, and related design and construction management services to the Department of Defense. The companies’ overlapping and complementary technical and management skills deliver highly responsive services and increase cost efficiencies.

Tetra Tech Helps Small Businesses Grow

IO Environmental & Infrastructure, Inc.

IO Environmental & Infrastructure, Inc. is a registered Service-Disabled Veteran-Owned Small Business with the Small Business Administration. Starting with supplying drinking water to Tetra Tech’s project trailers in San Francisco in 2007, IOEI’s role as a Tetra Tech subcontractor and its business have grown exponentially.

Tetra Tech Supports Native American Small Business

Oneida Total Integrated Enterprises

Vermont-based Oneida Total Integrated Enterprises (OTIE) is a tribally-owned Native American, SBA-certified 8(a) small disadvantaged business that provides remediation, civil infrastructure, environmental, and construction services. Working with Tetra Tech, OTIE has improved its competitiveness for federal contracts and strengthened its financial management and accounting systems.

Small Business Partner Grad

American Integrated Services

California-based American Integrated Services (AIS) is a 180-person company that specializes in environmental remediation. Tetra Tech and AIS have teamed to provide comprehensive environmental services throughout California to the U.S. Navy, the U.S. Air Force, and U.S. Army Corps of Engineers since 1999. Tetra Tech provides engineering and environmental consulting, and AIS provides remedial construction in the field.