Top 27 Contractors in PSC F111: Industrial Investigations, Surveys and Technical Support for Multiple Pollutants, Aug 2025–Jul 2026
Parent companies by net contract obligations Aug 1, 2025 – Jul 31, 2026 Code page on GovTribe
The latest 12 months. See the newest fiscal year's list: Top Contractors in PSC F111: Industrial Investigations, Surveys and Technical Support for Multiple Pollutants, FY2025.
The top 10 won 90% of PSC F111 contract dollars from August 2025 through July 2026
Ranking facts
- Contract obligations
- $16,047,669 Net of deobligations, by contracts coded PSC F111
- Contractors
- 27 Parent companies with an obligation
- Largest contractor
- CDM Smith Inc. $2.47 million, 15.1% of obligations
- Data as of
Contract actions from FPDS (SAM.gov). How the rankings work · Download all 27 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)
Full ranking
| Rank | Contractor | Net obligations | Share | Trend |
|---|---|---|---|---|
| 1 |
CDM Smith Inc.
Top agencies
|
$2,472,359 | ||
| 2 | $2,401,038 | |||
| 3 |
Cape Fox Corporation
Top agencies
|
$2,138,186 | ||
| 4 | $1,921,134 | |||
| 5 |
SJS Executives LLC
Top agencies
|
$1,699,553 | ||
| 6 |
Dawson Mcg, Inc.
Top agencies
|
$1,216,723 | ||
| 7 |
Applied Ecology Inc.
Top agencies
|
$1,204,261 | ||
| 8 |
Tanaq-Mes 8(A) JV, LLC
Top agencies
|
$644,846 | ||
| 9 |
Jacobs Engineering Group Inc.
Top agencies
|
$588,077 | ||
| 10 |
The NDN Companies
Top agencies
|
$501,170 | ||
| 11 |
AECOM
Top agencies
|
$256,835 | ||
| 12 |
Tetra Tech, Inc.
Top agencies
|
$221,085 | ||
| 13 |
Bb&E, Inc.
Top agencies
|
$200,019 | ||
| 14 |
PCI Bhate JV LLC
Top agencies
|
$197,290 | ||
| 15 |
EA Engineering Science and Technology Inc. PBC
Top agencies
|
$98,222 | ||
| 16 | $48,818 | |||
| 17 |
Tysam Tech, LLC
Top agencies
|
$48,685 | ||
| 18 |
Bluestone Interspec JV, LLC
Top agencies
|
$44,515 | ||
| 19 |
QTS Group LLC
Top agencies
|
$40,200 | ||
| 20 |
Tatenda Inc.
Top agencies
|
$35,030 | ||
| 21 | $34,307 | |||
| 22 | $16,000 | |||
| 23 | $14,528 | |||
| 24 |
BBJ Group LLC
Top agencies
|
$13,900 | ||
| 25 |
Cosmos Technologies Inc.
Top agencies
|
$3,528 | ||
| 26 |
Ati, Inc.
Top agencies
|
$3,056 | ||
| 27 | $1,000 |
Show all 27
How this ranking works
- Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
- Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $16.4 million obligated before deobligations, so they never pass 100%.
- Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
- Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
- Rank changes compare with Aug 2024–Jul 2025. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
- Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list.
- Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.
Quick answers
Who were the top 10 PSC F111 contractors in Aug 2025–Jul 2026?
1. CDM Smith Inc. ($2.47M), 2. Straughan Environmental, Inc. ($2.4M), 3. Cape Fox Corporation ($2.14M), 4. Energy and Environment, LLC ($1.92M), 5. SJS Executives LLC ($1.7M), 6. Dawson Mcg, Inc. ($1.22M), 7. Applied Ecology Inc. ($1.2M), 8. Tanaq-Mes 8(A) JV, LLC ($645K), 9. Jacobs Engineering Group Inc. ($588K), 10. The NDN Companies ($501K).
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