Top 43 Contractors in PSC Z1NA: Maintenance of Fuel Supply Facilities, FY2025
Parent companies by net contract obligations Oct 1, 2024 – Sep 30, 2025 Code page on GovTribe
The top 10 won 66% of FY2025 PSC Z1NA contract dollars
Ranking facts
- Contract obligations
- $188,967,909 Net of deobligations, by contracts coded PSC Z1NA
- Contractors
- 47 Parent companies with an obligation
- Largest contractor
- Pond Constructors Inc. $59.3 million, 20.8% of obligations
- Data as of
Contract actions from FPDS (SAM.gov). How the rankings work · Download all 43 rows as CSV
Full ranking
| Rank | Contractor | Net obligations | Share | Trend |
|---|---|---|---|---|
| 1 |
Pond Constructors Inc.
Top agencies
|
$59,278,745 | ||
| 2 | $44,245,045 | |||
| 3 |
Tetra TECH Inc.
Top agencies
|
$28,599,169 | ||
| 4 |
Guidehouse Inc.
Top agencies
|
$19,360,018 | ||
| 5 | $17,707,519 | |||
| 6 |
Mitomo Co., Ltd.
Top agencies
|
$5,067,511 | ||
| 7 | $4,817,121 | |||
| 8 |
Ecco GMBH
Top agencies
|
$3,668,536 | ||
| 9 |
Witco Industries Ltd.
Top agencies
|
$3,293,711 | ||
| 10 | $2,719,299 | |||
| 11 | $2,332,107 | |||
| 12 |
JBW Group LLC
Top agencies
|
$1,907,375 | ||
| 13 |
ECC Mezz LLC
Top agencies
|
$958,484 | ||
| 14 | $881,754 | |||
| 15 |
GKG Contractors LLC
Top agencies
|
$831,842 | ||
| 16 |
Golder Europe Service Centre SRL
Top agencies
|
$732,757 | ||
| 17 | $620,243 | |||
| 18 |
Fluid Solutions LLC
Top agencies
|
$535,627 | ||
| 19 | $234,736 | |||
| 20 |
Tidewater, Inc.
Top agencies
|
$187,532 | ||
| 21 | $175,125 | |||
| 22 | $170,087 | |||
| 23 | $114,108 | |||
| 24 |
Amentum Holdings, Inc.
Top agencies
|
$104,589 | ||
| 25 | $87,796 | |||
| 26 |
Phoenix International Holdings Inc.
Top agencies
|
$86,947 | ||
| 27 |
Cinteot Inc.
Top agencies
|
$61,290 | ||
| 28 |
Al Dobowi FZE
Top agencies
|
$60,434 | ||
| 29 |
Anointed Hands Services LLC
Top agencies
|
$58,932 | ||
| 30 | $44,003 | |||
| 31 |
Vision Contracting Inc.
Top agencies
|
$40,892 | ||
| 32 |
Hawaii Marine Cleaning LLC
Top agencies
|
$36,792 | ||
| 33 |
Gilbane Federal
Top agencies
|
$36,186 | ||
| 34 |
Fluid Power Solution LLC
Top agencies
|
$31,176 | ||
| 35 |
I-2-I Solutions, Inc.
Top agencies
|
$18,066 | ||
| 36 |
Syn-Tech System, Inc.
Top agencies
|
$12,845 | ||
| 37 |
D7, LLC
Top agencies
|
$12,291 | ||
| 38 |
Power Four Limited
Top agencies
|
$12,000 | ||
| 39 |
Ilkwang E&C Co., Ltd.
Top agencies
|
$8,090 | ||
| 40 |
PB Hoidale Co Inc.
Top agencies
|
$7,224 | ||
| 41 | $7,100 | |||
| 42 |
SME Solutions LLC
Top agencies
|
$3,675 | ||
| 43 | $906 |
Show 18 more
43 of 47 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 $285 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. 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.
- Fiscal year 2025 ran Oct 1, 2024 – Sep 30, 2025. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
- Rank changes compare with FY2024. "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. The step from FY2024 takes the color of the rank change beside it.
- 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 Z1NA contractors in FY2025?
1. Pond Constructors Inc. ($59.3M), 2. Weston Solutions Holdings, Inc. ($44.2M), 3. Tetra TECH Inc. ($28.6M), 4. Guidehouse Inc. ($19.4M), 5. Bristol Bay Native Corporation ($17.7M), 6. Mitomo Co., Ltd. ($5.07M), 7. Environmental Chemical Corporation ($4.82M), 8. Ecco GMBH ($3.67M), 9. Witco Industries Ltd. ($3.29M), 10. Chugach Government Solutions, LLC ($2.72M).
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