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 $59,278,745
Rank history: #4 in FY2021, #3 in FY2022, #3 in FY2023 and #2 in FY2024; up 1 since FY2024.
2 $44,245,045
Rank history: #1 in FY2021, #2 in FY2022, #2 in FY2023 and #3 in FY2024; up 1 since FY2024.
3 $28,599,169
Rank history: #8 in FY2021, #5 in FY2022, #5 in FY2023 and #4 in FY2024; up 1 since FY2024.
4
Guidehouse Inc. Through Aptim Federal Services, LLC
$19,360,018
Rank history: not on the FY2021–FY2023 lists and #1 in FY2024; down 3 since FY2024.
5 $17,707,519
Rank history: #7 in FY2021, #7 in FY2022, #6 in FY2023 and #10 in FY2024; up 5 since FY2024.
6 $5,067,511
Rank history: not on the FY2021–FY2023 lists and #29 in FY2024; up 23 since FY2024.
7 $4,817,121
Rank history: #9 in FY2021, #8 in FY2022, #7 in FY2023 and #8 in FY2024; up 1 since FY2024.
8 $3,668,536
Rank history: not on the FY2021–FY2024 lists; new.
9 $3,293,711
Rank history: not on the FY2021–FY2024 lists; new.
10 $2,719,299
Rank history: not on the FY2021–FY2024 lists; new.
11 $2,332,107
Rank history: not on the FY2021–FY2023 lists and #12 in FY2024; up 1 since FY2024.
12 $1,907,375
Rank history: not on the FY2021–FY2024 lists; new.
13 $958,484
Rank history: not on the FY2021–FY2023 lists and #15 in FY2024; up 2 since FY2024.
14 $881,754
Rank history: not on the FY2021–FY2023 lists and #11 in FY2024; down 3 since FY2024.
15 $831,842
Rank history: not on the FY2021–FY2024 lists; new.
16
Golder Europe Service Centre SRL Through WSP Italia S.R.L.
$732,757
Rank history: not on the FY2021–FY2024 lists; new.
17 $620,243
Rank history: not on the FY2021–FY2024 lists; new.
18 $535,627
Rank history: #19 in FY2021, #18 in FY2022, #15 in FY2023 and #28 in FY2024; up 10 since FY2024.
19 $234,736
Rank history: not on the FY2021–FY2024 lists; new.
20 $187,532
Rank history: #20 in FY2021, #19 in FY2022, #18 in FY2023 and #27 in FY2024; up 7 since FY2024.
21 $175,125
Rank history: not on the FY2021–FY2024 lists; new.
22 $170,087
Rank history: not on the FY2021–FY2023 lists and #19 in FY2024; down 3 since FY2024.
23 $114,108
Rank history: not on the FY2021–FY2023 lists and #13 in FY2024; down 10 since FY2024.
24 $104,589
Rank history: not on the FY2021–FY2024 lists; new.
25 $87,796
Rank history: not on the FY2021–FY2023 lists and #31 in FY2024; up 6 since FY2024.
26
Phoenix International Holdings Inc.
$86,947
Rank history: not on the FY2021–FY2024 lists; new.
27
Cinteot Inc.
$61,290
Rank history: not on the FY2021–FY2022 lists, #21 in FY2023 and #30 in FY2024; up 3 since FY2024.
28 $60,434
Rank history: not on the FY2021–FY2024 lists; new.
29 $58,932
Rank history: not on the FY2021–FY2024 lists; new.
30 $44,003
Rank history: not on the FY2021–FY2024 lists; new.
31 $40,892
Rank history: not on the FY2021–FY2024 lists; new.
32 $36,792
Rank history: not on the FY2021–FY2024 lists; new.
33 $36,186
Rank history: not on the FY2021–FY2024 lists; new.
34 $31,176
Rank history: not on the FY2021–FY2022 lists, #25 in FY2023 and #32 in FY2024; down 2 since FY2024.
35 $18,066
Rank history: not on the FY2021–FY2024 lists; new.
36 $12,845
Rank history: #32 in FY2021, #34 in FY2022, #29 in FY2023 and #41 in FY2024; up 5 since FY2024.
37 $12,291
Rank history: not on the FY2021–FY2024 lists; new.
38 $12,000
Rank history: not on the FY2021–FY2024 lists; new.
39 $8,090
Rank history: not on the FY2021–FY2023 lists and #17 in FY2024; down 22 since FY2024.
40 $7,224
Rank history: not on the FY2021–FY2024 lists; new.
41 $7,100
Rank history: not on the FY2021–FY2024 lists; new.
42
SME Solutions LLC
$3,675
Rank history: not on the FY2021–FY2023 lists and #44 in FY2024; up 2 since FY2024.
43 $906
Rank history: not on the FY2021–FY2023 lists and #25 in FY2024; down 18 since FY2024.
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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