Tetra Tech, Inc.

Pasadena, CA Tetra Tech, Inc.

UEI
LMRMKLLL3LG5
CAGE
078E8
Primary NAICS
541330 Engineering Services
SAM.gov registration
Active through

Company facts

Self-certified in SAM.gov
  • For Profit Organization
Entity structure
Corporate Entity (Not Tax Exempt)
NAICS codes registered in SAM.gov
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Corporate family

Showing 25 subsidiaries. See the full corporate family on GovTribe.

SAM.gov registration date
Physical address
3475 E Foothill Blvd, Pasadena, CA 91107, USA
Website
tetratech.com
Founded
1966
Employees
10K-50K
Estimated annual revenue
$1B-$10B
Industry
  1. Industrials
  2. Capital Goods
  3. Construction & Engineering
  4. Civil Engineering
SIC code
87 Engineering & Management Services
Profiles

Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .

Recent federal awards

Tetra Tech, Inc.'s 5 most recent federal contract and grant awards, newest first. Amounts are dollars obligated.
Award Agency Obligated Awarded
Olem large mission support call order title: rcra corrective action (CA) program support Contract · 68HERL26F0231 Environmental Protection Agency $265,370
Hawaii land retention EIS Contract · 140D0426F1259 Interior Business Center $1,977,825
New call order for support for the national nonpoint source management program Contract · 68HERW26F0215 Environmental Protection Agency $368,000
MN-FWS ARD-fshrs-icrcc support Contract · 140F0S26F0030 Fish and Wildlife Service $139,864
Technical support for offshore mineral leasing and operations on the outer continental shelf Contract · 140M0126F0042 Bureau of Ocean Energy Management $1,448,567

About Tetra Tech, Inc.

Written by GovTribe AI ·

Tetra Tech, Inc., a large for-profit consulting and engineering firm headquartered in Pasadena, California, operates as a prime contractor across civilian and defense federal agencies, delivering environmental remediation, architect-engineering, infrastructure development, and technical services without set-aside restrictions. The company competes in full-and-open procurements and holds a substantial portfolio of indefinite delivery vehicles (IDVs), multiple-award schedule contracts, and blanket purchase agreements valued in the billions of dollars across the Environmental Protection Agency, Department of Defense, U.S. Army Corps of Engineers, Department of State, and NASA.

Tetra Tech's capability portfolio centers on environmental site assessment and remediation, NEPA compliance and environmental impact statement preparation, hazardous waste management and PFAS remediation, water quality and infrastructure engineering, architect-engineer services for military and civilian facilities, international development and demining operations, and technical compliance support. Recent named work includes a $17.5 million NNSA task order for NEPA compliance support and site-wide document development under the Multiple Award Schedule; a $6.28 million Millennium Challenge Corporation delivery order for road transportation infrastructure consulting in Mozambique under OASIS+ Unrestricted; a $55.1 million Bureau of Political-Military Affairs delivery order for humanitarian mine action and unexploded ordnance removal in Iraq; a $80.5 million similar demining delivery order in Laos; and a $23.5 million USAID cost-plus-fixed-fee delivery order for climate-smart agriculture activity support in Pakistan, all under OASIS or OASIS+ vehicles.

Tetra Tech's customer concentration is highly skewed toward defense. The top five customers by award count (Air Force, Air Force Installation Contracting, Army, EPA, and Air Force Civil Engineer Center) represent 43% of all awards but are led by Air Force Installation Contracting (355 awards, $3.09 billion potential value) and Air Force Civil Engineer Center (128 awards, $3.02 billion potential value), signaling that the majority of Tetra Tech's active volume flows to Department of Defense facility and environmental programs. By potential value, the Air Force programs and Army Corps of Engineers dominate: Air Force Installation Contracting alone accounts for $3.09 billion; Air Force Civil Engineer Center for $3.02 billion; Army Corps of Engineers Mobile District for $817.9 million; and EPA Office of Land and Emergency Management for $186.7 million. The EPA's share by dollars is smaller despite significant contract vehicle holdings, reflecting smaller task order values against larger ceiling vehicles.

Tetra Tech holds substantial parent vehicle positions across both GSA and agency-specific IDVs. The Multiple Award Schedule carries 262 task orders valued at $2 billion combined potential. Agency vehicles dominate: an Indefinite Delivery Contract (F4162403D8617) with 306 task orders worth $25.8 million combined potential; IDC FA890308D8781 with 199 task orders ($101.9 million); and IDC N6247008D1008 with 148 task orders ($44.9 million). Recent IDV awards include a $151 billion Missile Defense Agency Scalable Homeland Innovative Enterprise Layered Defense (SHIELD) multiple-award IDIQ; a $100 million Air Force Civil Engineer Center Environmental Assessment and Impact Statement Services vehicle; a $249 million Army Corps of Engineers Environmental Quality Program architect-engineer services contract; a $225 million NASA Environmental Support Services BPA; a $100 million EPA Office of Land and Emergency Management Mission Support Services BPA; and an Alliant 3 GWAC position for IT services. The company also sits on the OASIS and OASIS+ unrestricted government-wide acquisition contracts, enabling task order work across civilian and defense agencies on environmental, infrastructure, and integrated services delivery.

Activity has remained flat to slightly declining year-over-year, with 42 awards in 2022, 50 in 2023, 45 in 2024, and 45 in 2025, suggesting mature market position and steady but not accelerating demand. Within the next twenty-four months, Tetra Tech faces recompete exposure on 51 awards with combined potential value of $666.5 million, representing significant renewal opportunity and competitive risk concentrated in environmental remediation and architect-engineer services across Defense installations.

Tetra Tech operates primarily as a prime contractor (99% of awards) and leans moderately on subcontractors for delivery. Across SCI-reportable prime contracts, subcontractors accounted for an average of 9 percent of contractor hours in FY2024, with 68 named subcontractors engaged across the portfolio. Recent named subs include Sealaska Remediation Solutions, LLC (environmental assessment and EIS support for Air Force and Army installations), New South Associates, Inc. (cultural resource management and historic preservation), Gryphon Environmental, LLC (hazardous waste supplies at Tinker Air Force Base), Testamerica Laboratories and Eurofins (laboratory analytical services for environmental remediation), Northbridge Environmental Management Consultants (water infrastructure and nonpoint source program support), and several international subcontractors including Khanga Rue Kenya and Infotrak Research for USAID Kenya and Somalia communications work. Tetra Tech's subsidiaries include Tetra Tech EC (engineering and environmental consulting) and Ardaman & Associates (geotechnical and materials services), indicating internal capability consolidation alongside external teaming.

SCI-reported invoiced revenue rose substantially year-over-year: $52.2 million across 223 FTEs in FY2022, $106.6 million across 201 FTEs in FY2023 (indicating higher-value task orders despite FTE decline), and $164.2 million across 339 FTEs in FY2024. Government-paid hourly rates on SCI-captured service contracts ranged from a tenth-percentile low of $66.01/hr to a ninetieth-percentile high of $433.16/hr, with a median of $151.57/hr, reflecting a mix of junior technical labor, mid-level engineers, and senior administrative and executive leadership across diverse environmental and engineering disciplines. The FY2024 growth in both invoicing and FTE headcount ($164.2 million, 339 FTEs) indicates that Tetra Tech is ramping delivery intensity on large task orders, particularly defense and international development programs. GSA Schedule labor categories span junior technicians at $70.86/hr through senior vice presidents at $409.18/hr, with 139 active pricing levels across engineering, science, project management, and administrative disciplines; no security clearance levels are explicitly offered in the rate structure, though defense contract performance likely involves facility clearance requirements for facility access and classified work. The 2,795-award portfolio with $83.7 billion combined potential value, combined with substantial IDV and GWAC positions and growing FTE trajectory, positions Tetra Tech as a dominant national provider of federal environmental remediation, engineer-procure-construct, and infrastructure modernization services, with particular depth in Department of Defense facility transformation and international development missions.

Contract vehicles

Tetra Tech, Inc. holds a place on 22 federal contract vehicles. Active vehicles first.

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Quick answers

What is Tetra Tech, Inc.'s UEI?

Tetra Tech, Inc.'s Unique Entity ID (UEI) in SAM.gov is LMRMKLLL3LG5.

What is Tetra Tech, Inc.'s CAGE code?

Tetra Tech, Inc.'s CAGE code is 078E8.

What is Tetra Tech, Inc.'s primary NAICS code?

Tetra Tech, Inc.'s primary NAICS code is 541330 (Engineering Services).

Where is Tetra Tech, Inc. located?

Tetra Tech, Inc.'s physical address in SAM.gov is 3475 E Foothill Blvd, Pasadena, CA 91107, USA.

Is Tetra Tech, Inc. registered in SAM.gov?

Yes. Tetra Tech, Inc.'s SAM.gov registration is active through October 13, 2026.

Which contract vehicles does Tetra Tech, Inc. hold?

Tetra Tech, Inc. holds a place on 22 federal contract vehicles, including Alliant 3, Architect and Engineering Services to Support the Environmental Quality Program, CESAM, South Atlantic Division and Environmental Assessment and Impact Statement Services.

What is Tetra Tech, Inc.'s most recent federal award?

Tetra Tech, Inc.'s most recent federal contract award is Olem large mission support call order title: rcra corrective action (CA) program support (68HERL26F0231), from Environmental Protection Agency, on September 30, 2026.

On GovTribe

See Tetra Tech, Inc.'s full federal record

  • Federal contract awards
  • IDV awards
  • Contract vehicles
  • Federal grant awards
  • Subcontracting relationships
  • Funding analysis by agency, NAICS and set-aside
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