Tetra Tech, Inc.

Tetra Tech, Inc., a for-profit global engineering and consulting firm headquartered in Pasadena, California, operates through a Chicago-based division (Tetra Tech, Inc. Division, doing business as Tetra TECH) that serves as a prime contractor delivering environmental remediation, technical assessment, and Superfund site management services to the Environmental Protection Agency across multiple regions without set-aside restrictions. The division competes as an unrestricted large prime contractor and holds two major EPA indefinite-delivery vehicles anchoring its federal footprint: a $450 million Superfund and Great Lakes Architecture & Engineering Services (SFGLAES) contract and a $73.3 million Superfund Technical Assessment and Response Team VI (START VI) contract, both supporting remediation and design work across EPA regions.

EPA Region 5 dominates the division's customer concentration by both volume and dollars. The top five funding agencies account for 96 percent of recent awards, with EPA Region 5 holding 115 awards valued at $864.5 million combined potential value, followed at significant distance by EPA Region 3 (7 awards, $1.19 billion potential value — all large individual orders rather than task-order vehicles). EPA Regions 4, 9, and 10 round out the active set. This concentration reflects the division's specialization in Great Lakes remediation and the scalability of Region 5 vehicles like START VI and SFGLAES, both running through 2028–2029.

The division's primary capability portfolio centers on Superfund site investigation, remedial design and engineering, feasibility studies, site assessment, emergency response coordination, and technical support for contaminated site cleanup. Representative work includes a $15.04 million East Palestine train derailment emergency response and cleanup task order under START VI (June 2025, invoiced $2 million across 7.1 FTEs in FY2025 at $135.74/hr); an $8.21 million remedial investigation and feasibility study at Federated Metals Corp. Whiting in Hammond, Indiana under SFGLAES (September 2024, invoiced $389 thousand across 1.4 FTEs in FY2025); and a $3.8 million Shiawassee River Superfund remediation order in Fowlerville, Michigan under SFGLAES (June 2026). Additional task orders address site-specific work at Adam's Plating, LaSalle Electrical Utilities, Dearborn, Main Street Well Field, and Torch Lake, with individual ceilings ranging from approximately $21 thousand to $494 thousand. START VI alone has generated approximately 18 delivery orders totaling roughly $31 million as of April 2026.

Across the division's SCI-reportable federal services activity (a subset capturing contracts above $150,000), invoiced revenue in FY2025 reached $6.5 million across 24.9 FTEs. Historical SCI invoicing showed $2.4 million in FY2022, $2.4 million in FY2023, and $2.7 million in FY2024, reflecting sharp acceleration in FY2025. Government-paid hourly rates on prime service contracts span a spectrum from a low of approximately $84/hr (allied paper contractor support work) through a median of $111.83/hr to senior rates near $161/hr, consistent with a mixed-skill labor model in environmental field operations and technical assessments. Across SCI-reportable prime contracts, the division subcontracts approximately 7 percent of total contractor hours to eight named subcontractors, indicating a primarily self-performed delivery model with selective specialty subcontracting for laboratory analysis, drilling, and equipment rental.

Named subcontractors include ALS Group USA Corporation and ALS Environmental for laboratory analytical services and sample storage; Cascade Drilling for sonic drilling and well installations; Field Environmental Instruments Inc. for equipment rental; Eurofins TestAmerica and Eurofins Environment Testing for laboratory analysis; and Mannik & Smith Group, Inc. for field investigation and technical support on SFGLAES orders. On non-SCI-reportable sub work, the division subcontracts to Environmental Quality Management, Inc. (sediment removal and environmental mitigation at Callahan Mine Superfund Site, May and December 2023) and to Deloitte Consulting LLP (multifamily assessment contractors for green resilient retrofit program, November 2024).

Activity has grown modestly year over year — 11 awards in 2022, rising to 17 in 2025 — with 19 awards (combined potential value $55.4 million) reaching ultimate completion within the next twenty-four months and therefore facing recompete exposure. The division also serves as a recipient and sub-recipient on federal grants: FY2026 grant sub-awards under fisheries and invasive species management programs (enhanced contract fishing facilitation, angler/commercial fisher black carp incentive, invasive carp removal, and monitoring and removal planning support) suggest capacity in environmental conservation and restoration beyond Superfund remediation. The parent NAICS concentration runs heavily toward Environmental Consulting Services (111 awards) and Remediation Services (18 awards), with professional support codes dominating the PSC distribution (82 awards under Support-Professional: Emergency Response/Disaster Planning/Preparedness Support).