Tetra Tech, Inc.

Tetra Tech, Inc. (Tetra TECH Divisions), a large for-profit global engineering and environmental consulting firm headquartered in Pasadena, California, delivers architectural and engineering design services for civil works infrastructure, environmental remediation, and military construction projects to the Department of the Army Corps of Engineers as a prime contractor across 61 awards (95% of recent activity) and competes without set-aside restriction in full-and-open federal procurement.

The firm's customer concentration is heavily weighted toward the Army Corps of Engineers across its regional districts. The top five customers by award count (86% of recent awards) are anchored by the Portland Engineering District (35 awards, $20.5 million combined potential value), the main Army Corps entity (10 awards, $47.5 million), the Louisville Engineering District (4 awards, $202.4 million), the Omaha Engineering District (1 award, $22.5 million), and the Walla Walla Engineering District (3 awards, $530 thousand). The top-five ranking by potential value (96% of combined value) reorders substantially: Louisville District dominates with $202.4 million across 4 awards, followed by the Army Corps Finance entity with a single $49 million IDIQ award, then the main Army Corps with $47.5 million, Omaha with $22.5 million, and Portland with $20.5 million. This divergence signals that Tetra Tech holds large-dollar indefinite vehicles alongside numerous smaller task orders, particularly in the Portland district.

Tetra Tech holds two major parent vehicles. The $200 million Infrastructure Investment and Jobs Act AE Services Great Lakes and Ohio River Division contract, awarded by Louisville District in May 2023 through May 2028, has generated 11 task orders worth $73.8 million combined potential value. Representative work under this vehicle includes a $34.5 million delivery order for 35% to 100% final design services on the LaGrange Dam 1,200-foot lock expansion in Illinois; a $22.5 million delivery order for environmental permitting and compliance support for the Sentinel Program at Francis E. Warren Air Force Base in Wyoming; an $8.6 million delivery order for Kentucky Lock Approach Wall design services; and a $2.9 million delivery order for Lock and Dam 25 Navigation and Ecosystem Sustainability Program cofferdam modification. Tetra Tech was also awarded a $49 million multiple-award Indefinite Delivery contract by the Engineering and Environmental District Portland in October 2025 (through September 2030) for comprehensive architectural and engineering services covering the Portland area of responsibility with possible extension to Seattle and Walla Walla regions; as of June 2026, one $5 thousand minimum-guarantee task order has been issued against this vehicle. Additional parent vehicles include two smaller IDIQs generating task orders in the $3.5 million to $9.7 million range.

Recent activity shows 64 total awards (prime and sub combined) with $356.4 million combined potential value. Award volume declined from 6 awards in 2023 to 2 awards in 2024, 4 in 2025, and 2 in 2026 year-to-date, though the dollar value concentration in the large Great Lakes and Ohio River vehicle masks this decline in transaction count. Only 3 awards (combined potential value $9.9 million) reach ultimate completion within the next twenty-four months, indicating limited near-term recompete exposure on the core portfolio. Tetra Tech engages small business subcontractors including women-owned and minority-owned enterprises on individual task orders; named subs include Stanley Consultants, Inc. (geotechnical and site development design), Crawford Consulting Services (cost estimating and scheduling), Athena Engineering & Environmental (independent technical review), MJ2 Consulting (concrete design), Poole Fire Protection (WOSB, fire protection design), BHDG Architects (EDWOSB and WOSB, interior design), and Ott-Sakai & Associates LLC (minority-owned small disadvantaged business, construction methods and scheduling).