Tetra Tech, Inc.
Duluth, GA Doing business as Tetra TECH Em Inc. EMI Division
- UEI
- W4NLBJHRP7H3
- CAGE
- 3ZXB0
- Primary NAICS
- 541620 Environmental Consulting Services
- SAM.gov registration
- Active through
Company facts
- FY2025 rankings
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- Other NAICS codes in SAM.gov
- Corporate family
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-
Parent
Pasadena, CA
LMRMKLLL3LG5
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Parent
Pasadena, CA
LMRMKLLL3LG5
- SAM.gov registration date
- Physical address
- 1955 Evergreen Blvd #200, Duluth, GA 30096, USA
- Website
- tetratech.com
- Founded
- 1966
- Employees
- 10K-50K
- Estimated annual revenue
- $1B-$10B
- Industry
-
- Industrials
- Capital Goods
- Construction & Engineering
- 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 .
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $0 |
| FY2026 | $8,344,737 |
| FY2025 | $4,796,365 |
| FY2024 | $8,411,491 |
| FY2023 | $15,381,686 |
Top agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Environmental Protection Agency | $8,344,737 |
Contract vehicles
Expired vehicles (1)
Contract awards
| Award | Agency | Obligated | Awarded |
|---|---|---|---|
| Region 4 start VI removal site evaluations | EPA Region 4 | $1,000,000 | |
| Region 4 start VI superfund facility response plans (FRP) and spill prevention control and countermeasures (spcc) | EPA Region 4 | $180,000 | |
| Region 4 start VI superfund removal actions cercla | EPA Region 4 | $1,000,000 | |
| Region 4 start VI preparedness and prevention activities | EPA Region 4 | $1,000,000 | |
| R4 start VI emergency response cercla actions | EPA Region 4 | $1,000,000 |
Latest 5 listed here. See the rest on GovTribe.
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| Weston Solutions Inc. | West Chester, PA | 541330 Engineering Services |
| Kemron Environmental Services, Inc. | Atlanta, GA | 562910 Remediation Services |
| Techlaw Consultants Inc. | Chantilly, VA | 562910 Remediation Services |
| Kemron Environmental Services Inc. | Atlanta, GA | 562910 Remediation Services |
| C M C, Inc. | Nicholasville, KY | 562910 Remediation Services |
About the company
Tetra Tech, Inc. EMI Division, doing business as Tetra TECH Em Inc., serves as a prime contractor providing environmental site assessment, Superfund remediation support, hazardous waste cleanup technical evaluation, and emergency response services to the Environmental Protection Agency across Regions 4 and 5. The division is a wholly owned subsidiary of Tetra Tech, Inc., a global consulting and engineering firm headquartered in Pasadena, California. All recent awards are competed on a full-and-open basis with no small-business set-asides; the division competes as a large established contractor.
Customer concentration is extreme and geographically locked. EPA Region 4 accounts for 84 awards and $242.2 million combined potential value — 97% of the portfolio by award count and 71% by dollars — while EPA Region 5 holds 10 awards worth $95.9 million combined potential value. The remaining four awards across the Centers for Disease Control and Prevention and US Coast Guard total less than $1 million. This concentration reflects the division's embedded position as the primary START (Superfund Technical Assessment Response Team) contract holder for EPA Region 4 and Region 5 Superfund operations.
The portfolio rests on two parent vehicle relationships: the Superfund Technical Assessment Response Team V (START V) IDIQ, issued by EPA Region 4, carries 72 task orders worth $59.3 million combined potential value, and the newly awarded Superfund Technical Assessment Response Team VI (START VI) IDIQ, awarded July 9, 2026, with a $98.7 million ceiling through July 14, 2031. Tetra Tech received a single-award contract for START VI and has already drawn four delivery orders totaling $5.645 million in ceiling value for program administration, the Westside Lead site, emergency response CERCLA actions, and preparedness activities — all place-of-performance Berkeley Lake, Georgia, all time-and-materials or firm-fixed-price, all running through July 14, 2031. The START VI win is a material recompete event; it replaces the expiring START V vehicle and extends the division's EPA Region 4 footprint through 2031. A smaller portfolio of START IV task orders (12 orders, $18.5 million combined potential value) and six additional IDIQs rounds out vehicle holdings.
Recent work exemplifies the division's core capability set. Representative delivery orders include a $5.653 million time-and-materials task order for assessment and inspection at the Woolfolk Chemical Corporation Superfund site (awarded April 18, 2023, ultimate completion January 14, 2026), a $692.5 million task order for remedial investigation and feasibility study assessment at the Clearwater Finishing site (modified January 5, 2022, completion extended to July 14, 2026), and multiple emergency response orders for Hurricane Helene landfill strike teams, Hurricane Ian recovery, and Kentucky tornado response issued in 2022 and 2024. The division self-performs the bulk of labor; SCI-reportable data across FY2022–FY2025 shows 84 prime service contracts with an average sub-hours share of 5% and a roster of 45 named subcontractors, predominantly drilling-services and analytical-laboratory firms such as M&W Drilling, LLC and Pace Analytical Services, LLC engaged on larger remedial action tasks.
Activity was volatile across 2021–2024 — seven awards in 2021, 17 in 2022, ten in 2023, eight in 2024 — then dropped to eight awards in 2026 (partial-year data). This volatility reflects task-order issuance cadence under the master IDIQ rather than organic growth; the underlying START V vehicle remained steady through July 2026, when START VI transitioned in. On SCI-reportable service contracts, invoiced revenue grew from $7.1 million in FY2022 (29.7 FTEs) to a peak of $13.7 million in FY2024 (51.5 FTEs), then moderated to $10.3 million in FY2025 (40.0 FTEs). Government-paid hourly rates on SCI contracts run at a median of $118.39/hr, with the 10th percentile at $92.36/hr and the 90th percentile at $146.67/hr — consistent with environmental engineering labor in the federal remediation space. All 105 awards are prime contracts; the division has no sub-award footprint in the source data.
The division's federal footprint is entirely Superfund and emergency-response work for EPA Regions 4 and 5. Combined potential value across all awards stands at $338.7 million, with $85.1 million obligated as of the source date (25% utilization). The START VI award and associated delivery orders dated July–September 2026 represent the most recent transactional activity, with the division positioned to sustain EPA Region 4 environmental remediation operations through mid-2031 under the newly awarded master contract.
Quick answers
Is Tetra Tech, Inc. registered in SAM.gov?
Yes. Tetra Tech, Inc.'s SAM.gov registration is active through September 10, 2027.
Which contract vehicles does Tetra Tech, Inc. hold?
Tetra Tech, Inc. holds a place on 2 federal contract vehicles, including START IV and START V.
How much has Tetra Tech, Inc. received in federal contracts?
Federal contracts obligated $4,796,365 to Tetra Tech, Inc. in fiscal year 2025 and $36,934,279 in fiscal years 2023 through 2027.
How does Tetra Tech, Inc. rank among federal contractors?
Tetra Tech, Inc. ranked #1 in NAICS 54162, #4 in PSC R429 and #9 at the Environmental Protection Agency in FY2025.
What is Tetra Tech, Inc.'s most recent federal award?
Tetra Tech, Inc.'s most recent federal contract award is Region 4 start VI removal site evaluations (68HE0426F0102), from EPA Region 4, on September 2, 2026.
On GovTribe
See Tetra Tech, Inc.'s full federal record
- Federal contract awards
- IDV awards
- Contract vehicles
- Subcontracting relationships
- Funding analysis by agency, NAICS and set-aside
- Similar vendors