Top 45 Contractors in PSC F110: Development of Environmental Impact Statements and Assessments, 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 F110: Development of Environmental Impact Statements and Assessments, FY2025.
The top 10 won 82% of PSC F110 contract dollars from August 2025 through July 2026
Ranking facts
- Contract obligations
- $58,383,318 Net of deobligations, by contracts coded PSC F110
- Contractors
- 46 Parent companies with an obligation
- Largest contractor
- Vernadero Group Inc. $19.1 million, 31.5% of obligations
- Data as of
Contract actions from FPDS (SAM.gov). How the rankings work · Download all 45 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)
Full ranking
| Rank | Contractor | Net obligations | Share | Trend |
|---|---|---|---|---|
| 1 | $19,079,506 | |||
| 2 | $9,216,243 | |||
| 3 |
Gulf South Research Corp
Top agencies
|
$5,472,502 | ||
| 4 | $4,954,044 | |||
| 5 |
Pika International Inc.
Top agencies
|
$3,314,265 | ||
| 6 |
Bay West LLC
Top agencies
|
$1,827,858 | ||
| 7 |
Real Model Solutions, Inc.
Top agencies
|
$1,702,616 | ||
| 8 | $1,356,835 | |||
| 9 | $1,251,091 | |||
| 10 | $1,155,251 | |||
| 11 |
First Environment Inc.
Top agencies
|
$1,056,528 | ||
| 12 | $1,029,407 | |||
| 13 |
S C & A Inc.
Top agencies
|
$810,546 | ||
| 14 |
The NDN Companies
Top agencies
|
$763,134 | ||
| 15 | $721,969 | |||
| 16 |
North Wind-Ea II JV, LLC
Top agencies
|
$631,753 | ||
| 17 | $553,669 | |||
| 18 | $524,826 | |||
| 19 |
Tehama ECS LLC
Top agencies
|
$483,875 | ||
| 20 |
AECOM
Top agencies
|
$475,847 | ||
| 21 |
Koman Government Solutions LLC
Top agencies
|
$335,336 | ||
| 22 |
Dawson Solutions LLC
Top agencies
|
$318,877 | ||
| 23 |
Cherokee Nation
Top agencies
|
$300,601 | ||
| 24 | $248,100 | |||
| 25 | $213,685 | |||
| 26 |
Hdr, Inc.
Top agencies
|
$153,950 | ||
| 27 | $103,615 | |||
| 28 |
Noreas Aptim Environmental Remediation JV
Top agencies
|
$93,486 | ||
| 29 |
Buecher Debbie C
Top agencies
|
$88,563 | ||
| 30 |
Marstel-Day, LLC
Top agencies
|
$70,334 | ||
| 31 |
CE Solution Plus Corp.
Top agencies
|
$69,892 | ||
| 32 |
Leidos Holdings, Inc.
Top agencies
|
$66,383 | ||
| 33 |
Engineering/Remediation Resources Group Inc.
Top agencies
|
$57,382 | ||
| 34 |
Global Van Co., Ltd.
Top agencies
|
$23,132 | ||
| 35 | $22,760 | |||
| 36 | $19,750 | |||
| 37 |
Essnova Solutions Inc.
Top agencies
|
$16,800 | ||
| 38 | $16,500 | |||
| 39 |
Neie, Inc.
Top agencies
|
$7,833 | ||
| 40 | $6,500 | |||
| 41 |
Solv LLC
Top agencies
|
$5,490 | ||
| 42 | $3,500 | |||
| 43 |
OCH JV
Top agencies
|
$3,462 | ||
| 44 |
Corelogic Solutions, LLC
Top agencies
|
$1,908 | ||
| 45 | $1,000 |
Show 20 more
45 of 46 contractors listed here. See the rest on GovTribe.
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 $60.5 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 F110 contractors in Aug 2025–Jul 2026?
1. Vernadero Group Inc. ($19.1M), 2. Tierra Right of Way Services Ltd ($9.22M), 3. Gulf South Research Corp ($5.47M), 4. ECO & Associates, Inc. ($4.95M), 5. Pika International Inc. ($3.31M), 6. Bay West LLC ($1.83M), 7. Real Model Solutions, Inc. ($1.7M), 8. Mclaughlin Research Corporation ($1.36M), 9. Bristol Bay Native Corporation ($1.25M), 10. Bayside Engineering Construction Inc. ($1.16M).
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