Tetra Tech, Inc.

Tetra Tech, Inc.'s Nus Division - Pittsburgh (doing business as Tetra TECH) is a large, for-profit prime contractor and subsidiary of the global consulting and engineering firm Tetra Tech, Inc. headquartered in Pasadena, California. The Nus Division operates across environmental remediation, architect-engineer services, PFAS site investigation and remediation, environmental compliance, and hazardous waste assessment and cleanup at federal installations and facilities nationwide. It competes in full-and-open procurements without set-asides, holding prime positions on 99% of its awards.

The division's federal portfolio centers on environmental engineering services delivered through major indefinite delivery vehicles. Recent representative work includes a $47.8 million delivery order from the Defense Counterintelligence and Security Agency (May 2026) for SOW-FY26 SENTINEL environmental permitting and compliance support at Malmstrom Air Force Base, Montana, under the Environmental Architect-Engineer Services - USACE Northwestern Division IDIQ; a $28.6 million delivery order from U.S. Army Corps of Engineers Omaha District (March 2025) for 2025 Sentinel environmental permitting and compliance support at Francis E. Warren Air Force Base, Wyoming, also under the Northwestern Division vehicle; and a $7.4 million delivery order from NASA Goddard Space Center (August 2024) for sitewide PFAS and program support at Wallops Flight Facility, Virginia, under the NASA Environmental Restoration and Compliance Contract. Coast Guard work includes a $699,944 delivery order (September 2026) for environmental due diligence assessments at five USCG lighthouse and station facilities in California and Oregon, and a $289,163 order (September 2026) for SPCC plan development at multiple Southeast and Heartland district facilities.

Customer concentration reflects heavy defense and civilian agency exposure. The top five customers by award count — Department of the Navy Naval Facilities Engineering Command (439 awards, $95.6 million), Department of Homeland Security U.S. Coast Guard (136 awards, $232.4 million), Department of the Navy (125 awards, $1.1 million), NASA Kennedy Space Center (90 awards, $892.1 million), and Department of the Navy Installations Command (86 awards, $10.5 million) — account for 72% of recent awards. By potential value, the ranking shifts toward higher-dollar vehicles: NASA Kennedy Space Center ($892.1 million across 90 awards), Army Corps of Engineers Omaha District ($747.4 million across 8 awards), Army Corps of Engineers Baltimore District ($700.7 million across 5 awards), Army Installation Management Command Headquarters ($467.1 million across 8 awards), and Army Corps of Engineers Louisville District ($348.4 million across 17 awards) represent 68% of combined potential value.

The Nus Division holds positions on six parent vehicles that dominate its task-order pipeline: Navy IDIQ N6246794D0888 (466 task orders, $7.4 million combined potential value); Navy IDIQ N6246704D0055 (250 task orders, $111.4 million); Coast Guard Nationwide Environmental Engineering Services DTCG8302D3CL374 (38 task orders, $178.2 million); Coast Guard IDIQ HSCG8308D3CL109 (35 task orders, $42.6 million); and the Nationwide Environmental Engineering Services (30 task orders, $12.9 million). Recent vehicle wins include a $500 million multiple-award MATOC from Army Corps of Engineers Baltimore District (August 2025) for environmental and munitions design services across the North Atlantic Division, a $249 million multiple-award MATOC from Army Corps of Engineers Omaha District (September 2024) for architect-engineer environmental services supporting Sentinel and EPA initiatives, a $464 million Environmental Remediation MAIDIQ from Army Installation Management Command (February 2024) for PFAS site investigations and remediation services across facilities nationwide, and a $375 million NASA Environmental Restoration and Compliance Contract (January 2024) supporting environmental restoration and compliance work across NASA centers.

Activity trajectory shows cyclical ordering: 11 awards in 2022, 9 in 2023, 22 in 2024, 14 in 2025, and 5 year-to-date in 2026. Within the next twenty-four months, 21 awards with combined potential value of $92.1 million are completing and facing recompete exposure.

Service Contract Inventory data from FY2022 through FY2025 shows SCI-reportable invoicing of $49 million across prime contracts, with FY2024 peaking at $16.8 million across 35.0 FTEs and FY2025 reporting $14.1 million across 25.6 FTEs. Government-paid rates on environmental services contracts range from a 10th percentile of $27.25 per hour to a median of $171.00 per hour to a 90th percentile of $299.90 per hour, reflecting a mix of junior technical and senior engineering labor. Across SCI-reportable prime contracts, the division self-performs all reported labor with no meaningful subcontractor engagement. The division operates as a subcontractor on a small portfolio of defense and facility support work to primes including Fluor Marine Propulsion (Naval Nuclear Laboratory and Propulsion Program support), City Light & Power Aberdeen (Aberdeen Proving Ground microgrid and backup power), and Reid Middleton (USCG waterfront and special-purpose craft facility studies).

The Nus Division's capability footprint spans environmental site investigations and remedial design under NAICS 541715 and 541330, hazardous and radioactive waste remediation under NAICS 562910, and architect-engineer services across multiple PSC lines (Architect and Engineering–General, Environmental Systems Protection). Its 1,223 awards across 51 customer agencies position it as an established, high-volume prime on federal environmental remediation and compliance work, with particular depth on Navy facilities, Coast Guard infrastructure, Army Corps environmental programs, and NASA restoration missions.