Tetra Tech, Inc.

Pasadena, CA

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

Company facts

Self-certified in SAM.gov
  • For Profit Organization
Entity structure
Corporate Entity (Not Tax Exempt)
Other NAICS codes in SAM.gov
Show all 22
Corporate family

25 subsidiaries listed here. See the rest 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

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

Contract obligations by fiscal year

Fiscal year Obligated
FY2027 To date -$245,816
FY2026 $91,289,702
FY2025 $168,381,125
FY2024 $167,525,961
FY2023 $232,986,458

Top agencies by obligations

Rank Agency Obligated, FY2026–FY2027 Share
1 Department of State $46,960,792
2 Air Force $9,692,471
3 Environmental Protection Agency $9,636,969
4 Department of the Army $8,673,423
5 Department of Energy $4,687,736
6 National Aeronautics and Space Administration $3,291,655
7 Millennium Challenge Corporation $3,098,143
8 Department of Commerce $1,869,255
9 Department of the Interior $1,808,770
10 Department of Homeland Security $1,662,499

Contract vehicles

Expired vehicles (11)

Contract awards

Award Agency Obligated Awarded
Olem large mission support call order title: rcra corrective action (CA) program support 68HERL26F0231 Environmental Protection Agency $265,370
Nfrastructure consulting services: road transport and logistics, and irrigation for mozambique 95332426F0067 Millennium Challenge Corporation $1,037,415
FY27 environmental framework 47PH5426F0279 Public Buildings Service $9,333
Hawaii land retention EIS 140D0426F1259 Interior Business Center (DO) $1,977,825
New call order for support for the national nonpoint source management program 68HERW26F0215 Environmental Protection Agency $368,000

Latest 5 listed here. See the rest on GovTribe.

Contract subawards

Prime contractor Prime award Amount Awarded
Pantexas Deterrence, LLC CONTRACT 89233224CNA000004 FOR THE MANAGEMENT AND OPERATION OF THE PANTEX PLANT Environmental Services 89233224CNA000004 $149,501
Peraton Inc. SAROPS TASK ORDER 01 - PREVENTATIVE AND CORRECTIVE MAINTENANCE support based on customer requirements 70Z04421F21000200 $1,053,469
Valkyrie Enterprises, LLC IGF::CT::IGF task order 0001 for DOD line funding operational services 0001 $122,598
Veterans Construction Coalition LLC REPAIR SEQUALITCHEW DIVERSION STRUCTURE Repair Diversion Structure W912DW24F2008 $30,500
Sealaska Remediation Solutions, LLC NWW - CRS SEIS SCOPING Support the Columbia River Systems Operations Supplemental Environmental Impact Analysis Public Scoping (CRSO SEIS) associated with the… W912EF25F0025 $168,031

Latest 5 listed here. See the rest on GovTribe.

Grant awards

Award Agency Obligated Awarded
In accordance with executive order 13514 dated october 5, 2009 the president mandates that all agencies evaluate… NNX12AG33G National Aeronautics and Space Administration $261,826

Grant subawards

Prime recipient Prime award Amount Awarded
Not on record Site Remediation /Brownsfield $380,000.00 B-23-MC-29-0003 $380,000
Not on record Site Remediation B-25-MC-29-0003 $139,800
Not on record Site Remediation EV2924-10 $515,063.42 Slum & Blight 2025-0012 $184,000.00 B-24-MC-29-0003 $699,063
University Of California San Diego Initial: $20,199.58 on 05/11/2026 Mod 001: $60,000.00 on 08/24/2026 Years 03-05 Due to Subrecipient Name change to Tetra Tech Inc. PROJECT GOAL: Tetra Tech… NA24NOSX012C0029 $80,200
Monterey Bay Aquarium Research Institute Objective 1. Iterative development of next generation portal capabilities Objective 2. Ongoing DMAC support for new data ingestions NA24NOSX012C0033 $80,000

Latest 5 listed here. See the rest on GovTribe.

Similar vendors

Vendor Location Primary NAICS
Hydrogeologic, Inc. UEI S7Q4GKNGGA81 Reston, VA 562910 Remediation Services
Corporate Office UEI EPUXNLX5EYC4 Los Angeles, CA 541330 Engineering Services
Aptim Federal Services, LLC UEI JT9NZ8J1KQF5 Baton Rouge, LA 562910 Remediation Services
WSP USA Inc. UEI C76NUJZDXL75 Ephrata, PA 541620 Environmental Consulting Services
CDM Smith UEI DHS5ZJSFCSH9 Fairfax, VA 541330 Engineering Services

See more similar vendors on GovTribe

About the company

Written by GovTribe AI ·

Tetra Tech, Inc., headquartered in Pasadena, California, operates as a large, for-profit prime contractor delivering environmental consulting, engineering, infrastructure development, and technical services across federal agencies. The firm competes without set-aside restrictions across full-and-open procurements and holds a prime-dominated footprint—99% of recent awards are prime contracts, with only 1% subcontract work—positioning Tetra Tech as a primary vendor rather than a feeder to larger primes.

The company's federal capability portfolio centers on environmental remediation, NEPA compliance and environmental impact statement preparation, water quality assessment, site investigation and characterization, hazardous materials and waste management, architect-engineering services, facility design, and technical compliance support. Representative recent work includes $18.9 million in NEPA compliance and site-wide documentation services for the National Nuclear Security Administration's office of environment, safety, and health (MAS, time-and-materials, FY2026); $16.8 million in land revitalization technical assistance, site visioning, and financing support for EPA's Office of Land and Emergency Management (OLEM Mission Support Services BPA, time-and-materials, FY2026); $13.1 million for Kings Bay Environmental Impact Statement work under the Air Force civil engineer center (MAS, firm fixed price, FY2025); and $55.1 million for humanitarian mine action and unexplored ordnance removal in Iraq under State Department's Bureau of Political-Military Affairs (firm fixed price, base year plus four options, FY2023). The company also delivers international development and disaster response services, evidenced by a $80.5 million base-plus-four-option delivery order for humanitarian demining in Laos (State Department, FY2024–FY2025 invoicing of $13.9M to $15.9M across 9.6–11.8 FTEs).

Customer concentration skews toward the Air Force. The Air Force Materiel Command Installation and Mission Support Center accounts for the largest dollar magnitude (355 awards, $3.09 billion combined potential value), with the Air Force Civil Engineer Center contributing a secondary concentration (129 awards, $3.02 billion combined potential value). The EPA's Office of Land and Emergency Management holds the third-largest dollar position (50 awards, $204.7 million combined potential value), and the Army Corps of Engineers Mobile District rounds out the top tier (58 awards, $822.1 million combined potential value). Collectively, these four customer entities represent approximately 9% of the combined potential value across Tetra Tech's entire footprint; the vendor serves 162 distinct federal agencies, indicating broad but concentrated exposure across defense and civilian environmental portfolios.

Tetra Tech sits on multiple government-wide and agency-wide vehicles. The company holds a $999.9 billion ceiling on Alliant 3, GSA's governmentwide IT services GWAC (unrestricted, multiple-award, awarded February 2026, completion March 2036), though IT services represent a capability outlier for the firm's core business. More central to operations are environmental and infrastructure vehicles: the OASIS+ Unrestricted GWAC ($999.9 billion placeholder ceiling, unrestricted, awarded December 2024, completion December 2029), on which Tetra Tech has placed multiple delivery orders for infrastructure consulting in Mozambique and Liberia through the Millennium Challenge Corporation; the $151 billion Scalable Homeland Innovative Enterprise Layered Defense (SHIELD) IDIQ with the Missile Defense Agency (unrestricted, multiple-award, awarded December 2025, completion December 2035); a $249 million Architect-Engineering Services contract with the Army Corps of Engineers South Atlantic Division for environmental quality program support (multiple-award, awarded April 2025, completion April 2030); a $225 million NASA Environmental Support Services BPA (multiple-award, awarded May 2025, completion April 2035); and a $108 million EPA Office of Land and Emergency Management Mission Support Services BPA (multiple-award, awarded September 2024, completion September 2029). The company also holds single-award vehicles including a $48.8 million NEPA/environmental analysis BPA with the Bureau of Ocean Energy Management (May 2025, completion April 2030) and a $5.1 million single-award IDIQ with the Coast Guard for Search and Rescue Optimal Planning System Environmental Data Services (awarded January 2026, completion January 2031).

Activity has remained relatively flat year-over-year, averaging 42–50 awards annually over the past five years (2022–2026), with the most recent 24 months showing 46 awards in 2025 and 34 year-to-date in 2026. Within the next 24 months, 38 awards carrying a combined potential value of $622.3 million reach ultimate completion and face recompete risk, representing an 8% recompete exposure relative to the vendor's total footprint.

Service Contract Inventory data captures $451.1 million in invoiced federal services revenue across FY2022–FY2025, with peak activity in FY2024 ($164.2 million across 400 FTEs) and a decline in FY2025 to $128.2 million across 277 FTEs, suggesting either contract ramp-down or shifting focus away from reportable service contracts toward products or classified programs. On SCI-reportable prime contracts, Tetra Tech self-performed 91% of contractor hours; across 29 named subcontractor records, 89 distinct subs performed the remaining 9%, including Gryphon Environmental LLC (hazardous waste supplies, SDVOSB), Testamerica Laboratories Inc./Eurofins, Environmental Testing Inc., The Northbridge Group Inc. (minority-owned environmental consulting), Sealaska Remediation Solutions LLC, and New South Associates Inc. (woman-owned small business, cultural resource management). Government-paid hourly rates on the prime footprint ranged from $73.17/hr (10th percentile) to $399.95/hr (90th percentile), with a median of $154.97/hr, reflecting a mix of junior technician and senior management labor across environmental, engineering, and program-management disciplines. GSA Schedule labor categories span 139 entries from Technician Junior ($70.86/hr, high school education) through Senior Administrator/Senior Vice President ($409.18/hr, PhD, 15 years experience), with no security-cleared roles. The firm's labor cost posture and education/experience breadth align with technical and professional environmental services delivery.

Corporate structure includes 175 named subsidiaries, among them Global TECH Inc., The Kaizen Company LLC (engaged on USAID Haiti Citizen Security Program and other international development orders), Ardaman & Associates Inc., and specialized vehicles such as Tetra TECH Merrick Joint Venture, signaling capability in geotechnical services, international operations, and partnership delivery models. Tetra Tech competes unrestricted across full-and-open procurements and does not leverage small-business set-asides, reflecting its posture as an established large business competing on technical merit and past performance rather than socioeconomic advantage.

Quick answers

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

Tetra Tech, Inc.'s SAM.gov registration expired on October 13, 2026.

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

Tetra Tech, Inc.'s CAGE code is 078E8, and its Unique Entity ID (UEI) is LMRMKLLL3LG5.

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.

How much has Tetra Tech, Inc. received in federal contracts?

Federal contracts obligated $168,381,125 to Tetra Tech, Inc. in fiscal year 2025 and $659,937,431 in fiscal years 2023 through 2027.

How does Tetra Tech, Inc. rank among federal contractors?

Tetra Tech, Inc. ranked #1 in NAICS 8133, #1 in NAICS 54162 and #1 in PSC F114 in FY2025.

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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