Top 100 Contractors in PSC F108: Hazardous Substance Removal, Cleanup, and Disposal Services and Operational Support, 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 F108: Hazardous Substance Removal, Cleanup, and Disposal Services and Operational Support, FY2025.
The top 10 won 38% of PSC F108 contract dollars from August 2025 through July 2026
Ranking facts
- Contract obligations
- $1,902,551,026 Net of deobligations, by contracts coded PSC F108
- Contractors
- 631 Parent companies with an obligation
- Largest contractor
- Bechtel Parsons Blue Grass, A Joint Venture $120 million, 5.3% of obligations
- Data as of
Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)
Full ranking
| Rank | Contractor | Net obligations | Share | Trend |
|---|---|---|---|---|
| 1 | $119,599,732 | |||
| 2 |
Bechtel Corp
Top agencies
|
$118,193,551 | ||
| 3 | $110,656,830 | |||
| 4 | $91,511,906 | |||
| 5 |
Kemron Environmental Services Inc.
|
$87,721,783 | ||
| 6 | $84,309,261 | |||
| 7 | $73,495,584 | |||
| 8 |
EA Engineering Science and Technology Inc. PBC
|
$65,981,126 | ||
| 9 | $58,521,779 | |||
| 10 | $52,519,350 | |||
| 11 |
Oneida Environmental, LLC
Top agencies
|
$48,508,918 | ||
| 12 |
Weston Solutions Holdings Inc
|
$47,063,025 | ||
| 13 | $40,724,002 | |||
| 14 | $34,298,624 | |||
| 15 | $34,283,868 | |||
| 16 |
Guidehouse Inc.
|
$33,810,018 | ||
| 17 | $32,236,210 | |||
| 18 | $32,122,156 | |||
| 19 | $27,646,906 | |||
| 20 | $25,843,917 | |||
| 21 |
Gsia-Parsons JV LLC
Top agencies
|
$25,463,633 | ||
| 22 | $25,022,168 | |||
| 23 | $23,718,479 | |||
| 24 | $23,525,225 | |||
| 25 |
Kfs, LLC
Top agencies
|
$23,400,000 | ||
| 26 | $22,841,754 | |||
| 27 |
The Aleut Corporation
Top agencies
|
$22,408,328 | ||
| 28 |
Hgl-Aptim JV LLC
Top agencies
|
$20,850,142 | ||
| 29 | $18,509,384 | |||
| 30 |
Jacobs Engineering Group Inc.
|
$16,325,657 | ||
| 31 | $16,307,417 | |||
| 32 | $15,938,960 | |||
| 33 |
C M C, Inc.
Top agencies
|
$15,674,519 | ||
| 34 | $13,212,648 | |||
| 35 |
Fidelis-Bbd, LLC
Top agencies
|
$12,956,387 | ||
| 36 | $11,334,213 | |||
| 37 |
Aes-Esfs JV II LLC
Top agencies
|
$10,961,047 | ||
| 38 | $10,940,947 | |||
| 39 | $10,703,485 | |||
| 40 |
Ahtna-Arcadis 8(A) JV, LLC
Top agencies
|
$10,220,287 | ||
| 41 |
Ahtna Global LLC
Top agencies
|
$9,969,175 | ||
| 42 |
Seaon Environmental LLC
Top agencies
|
$9,539,980 | ||
| 43 | $9,060,928 | |||
| 44 |
Hgl-Portage JV LLC
Top agencies
|
$8,503,829 | ||
| 45 |
Aergc JV LLC
Top agencies
|
$8,326,564 | ||
| 46 |
Fpm-Aecom JV1
Top agencies
|
$8,265,696 | ||
| 47 | $8,230,819 | |||
| 48 |
Energysolutions, LLC
Top agencies
|
$8,223,898 | ||
| 49 | $8,136,485 | |||
| 50 | $7,928,774 | |||
| 51 |
Wsp-Versar JV
Top agencies
|
$7,885,827 | ||
| 52 | $7,629,490 | |||
| 53 | $7,546,780 | |||
| 54 | $6,332,070 | |||
| 55 | $5,848,189 | |||
| 56 |
Oneida-Stantec JV LLC
Top agencies
|
$5,790,532 | ||
| 57 | $5,651,975 | |||
| 58 |
North Wind Portage, Inc.
Top agencies
|
$5,524,520 | ||
| 59 | $5,457,438 | |||
| 60 |
Sargent Corporation
Top agencies
|
$5,414,000 | ||
| 61 |
LPS Kemron JV LLC
Top agencies
|
$5,411,026 | ||
| 62 | $5,239,200 | |||
| 63 | $4,940,000 | |||
| 64 | $4,849,351 | |||
| 65 |
Bhate-Bay West JV, LLC
Top agencies
|
$4,628,410 | ||
| 66 |
C & C Environmental Inc.
Top agencies
|
$4,553,075 | ||
| 67 |
Bayside-Errg JV
Top agencies
|
$4,549,842 | ||
| 68 | $4,387,634 | |||
| 69 | $4,304,483 | |||
| 70 | $4,300,520 | |||
| 71 |
Cape-Weston JV3 LLC
Top agencies
|
$4,243,772 | ||
| 72 | $4,027,363 | |||
| 73 | $3,958,040 | |||
| 74 | $3,881,849 | |||
| 75 | $3,818,939 | |||
| 76 |
Thornton Tomasetti, Inc.
Top agencies
|
$3,742,168 | ||
| 77 | $3,540,018 | |||
| 78 | $3,522,142 | |||
| 79 | $3,488,796 | |||
| 80 |
CTI and Associates Inc.
Top agencies
|
$3,354,468 | ||
| 81 |
JFL-WCS Partners LLC
Top agencies
|
$3,224,434 | ||
| 82 |
Del Mar-Trevet-Jv LLC
Top agencies
|
$3,223,608 | ||
| 83 |
Cherokee Nation
Top agencies
|
$3,154,242 | ||
| 84 |
Dawson Solutions LLC
Top agencies
|
$3,044,939 | ||
| 85 |
Clean Harbors Inc.
|
$3,011,688 | ||
| 86 |
Heliotech
Top agencies
|
$2,999,580 | ||
| 87 |
Nunarescon JV, LLC
Top agencies
|
$2,972,873 | ||
| 88 | $2,816,463 | |||
| 89 |
R Ward & Associates Inc.
Top agencies
|
$2,762,802 | ||
| 90 | $2,670,864 | |||
| 91 | $2,660,640 | |||
| 92 |
Bering Sea Eccotech LLC
Top agencies
|
$2,654,689 | ||
| 93 | $2,649,368 | |||
| 94 | $2,574,759 | |||
| 95 | $2,564,867 | |||
| 96 |
Aes-Esfs JV I LLC
Top agencies
|
$2,504,337 | ||
| 97 | $2,500,000 | |||
| 98 | $2,364,697 | |||
| 99 |
Nakupuna Consulting LLC
Top agencies
|
$2,337,121 | ||
| 100 | $2,293,565 |
Show 75 more
100 of 631 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 $2.26 billion 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 F108 contractors in Aug 2025–Jul 2026?
1. Bechtel Parsons Blue Grass, A Joint Venture ($120M), 2. Bechtel Corp ($118M), 3. Environmental Restoration LLC ($111M), 4. Amentum Holdings, Inc. ($91.5M), 5. Kemron Environmental Services Inc. ($87.7M), 6. Ciri Development Corporation ($84.3M), 7. Environmental Chemical Corporation ($73.5M), 8. EA Engineering Science and Technology Inc. PBC ($66M), 9. Hydrogeologic, Inc. ($58.5M), 10. Tehama Technical Services, LLC ($52.5M).
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