Tetra Tech, Inc.

Tetra Tech, Inc.'s Global Services (GLS) Division, doing business as Tetra TECH, is a large federal prime contractor that delivers architect-engineering design, construction management, and environmental engineering services for Department of Defense military infrastructure projects worldwide, with no small business set-aside participation. The division is a child entity of Tetra Tech, Inc., a global engineering and consulting firm headquartered in Pasadena, California, and operates from administrative offices in Marlborough, Massachusetts.

Tetra Tech GLS competes in the full-and-open market across two dominant parent contract vehicles: the $2 billion Architect-Engineering Services for Design and Construction Support for the Air Force Construction Program (AE NEXT), under which it has placed 25 task orders worth $22.8 million in combined potential value, and the $200 million Architect Engineering Services Korea 2022-2028 Indefinite Delivery/Indefinite Quantity contract with the U.S. Army Corps of Engineers, which anchors recurring work in the Pacific theater with 14 task orders valued at $13.6 million. Recent representative prime work includes a $32.2 million delivery order from USAID for dioxin remediation architect-engineering services at Bien Hoa Airbase in Vietnam (valued at $32.2 million, completion May 2028); a $14.2 million design-bid-build services delivery order for LSA Command Services and Headquarters Secure Areas improvements in the United Arab Emirates (ENDIST Middle East, completion June 2026); a $7.59 million elementary school facility design order at Camp Walker, South Korea (ENDIST Far East, January 2026); and a $6.98 million water treatment plant design and consolidation order at Misawa Air Base, Japan (Pacific Air Forces, completion July 2026). The division also holds three newly awarded multiple-award indefinite delivery contracts: $248.4 million for general architect-engineering services across Germany, Poland, Czech Republic, Belgium, the Netherlands, Luxembourg, Norway, and Denmark (USACE Europe, May 2025 award); $240 million for general architect-engineer design services in the Middle East region (ENDIST Middle East, February 2025 award); and $95 million for A-E services supporting military construction in six European nations (USACE Europe, June 2024 award).

Customer concentration tracks heavily toward the Department of Defense and its components. The top five customers by award count account for 64 percent of recent awards. ENDIST Middle East and ENDIST Far East dominate by both count and dollars: the Middle East District accounts for 74 awards valued at $640.7 million in combined potential value, and the Far East District accounts for 36 awards valued at $369 million. By potential-value ranking, the Air Force Civil Engineer Center anchors the portfolio with a $2 billion combined potential value across four awards, followed by the same Middle East and Far East district customers. Army European Command places 17 awards worth $46.8 million. The Office of the Secretary of Defense and Millennium Challenge Corporation round out the active set. This concentration reflects Tetra Tech GLS's specialization in military facility infrastructure — water treatment and distribution systems, wastewater and sewer lift station repairs, electrical switchgear and SCADA systems, facility renovations and dining facilities, fire protection design, and environmental remediation — with heavy geographic focus on Status of Forces Agreement work in South Korea, the Middle East, and Europe.

Activity has remained stable year over year at 16–25 awards annually over the past five years, with 233 total prime and sub awards recorded. Twenty awards totaling $69.7 million in combined potential value are reaching ultimate completion within the next twenty-four months, creating recompete exposure. The division operates as a prime contractor on 98 percent of its awards; sub-award footprint is minimal (five sub-awards total). When Tetra Tech GLS does subcontract, it engages specialized firms: Cosentini Associates (operating as a Tetra Tech subsidiary) provides fire protection design services, and the division's Engineering & Architecture Services subsidiary handles electrical, communications, and cybersecurity control systems design.

NAICS concentration runs entirely to engineering disciplines — 211 awards under Engineering Services (541330), 12 under Architectural Services (541310), and the remainder under related professional services categories. PSC coding mirrors this profile, with 99 awards under Architect and Engineering General landscape and interior design work, 52 under engineering drafting, and 37 under other A-E general categories.