Top 74 Contractors in PSC 4235: Hazardous Material Spill Containment and Clean-up Equipment and Material, FY2025

Parent companies by net contract obligations Oct 1, 2024 – Sep 30, 2025 Code page on GovTribe

The top 10 won 72% of FY2025 PSC 4235 contract dollars

Ranking facts

Contract obligations
$22,930,944 Net of deobligations, by contracts coded PSC 4235
Contractors
77 Parent companies with an obligation
Largest contractor
ISA (Wyoming) Corp $6.23 million, 26.4% of obligations
Data as of

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 74 rows as CSV

Full ranking

Rank Contractor Net obligations Share Trend
1 $6,231,956
Rank history: #2 in FY2021, #1 in FY2022, #5 in FY2023 and #6 in FY2024; up 5 since FY2024.
2 $1,410,503
Rank history: #40 in FY2021, #24 in FY2022, #20 in FY2023 and #22 in FY2024; up 20 since FY2024.
3 $1,387,250
Rank history: #11 in FY2021, #14 in FY2022, #11 in FY2023 and #2 in FY2024; down 1 since FY2024.
4
Downeast Logistics LLC
$1,359,360
Rank history: #3 in FY2021, #5 in FY2022, #4 in FY2023 and #3 in FY2024; down 1 since FY2024.
5 $1,269,634
Rank history: #5 in FY2021, #3 in FY2022, #7 in FY2023 and #7 in FY2024; up 2 since FY2024.
6 $1,216,021
Rank history: not on the FY2021–FY2023 lists and #47 in FY2024; up 41 since FY2024.
7 $1,186,426
Rank history: not on the FY2021–FY2022 lists, #23 in FY2023 and #1 in FY2024; down 6 since FY2024.
8 $1,061,434
Rank history: #4 in FY2021, #12 in FY2022, #92 in FY2023 and #8 in FY2024; unchanged since FY2024.
9 $1,013,524
Rank history: #6 in FY2021, #6 in FY2022, #9 in FY2023 and #10 in FY2024; up 1 since FY2024.
10 $824,981
Rank history: #16 in FY2021, #4 in FY2022, #3 in FY2023 and #4 in FY2024; down 6 since FY2024.
11 $625,812
Rank history: #7 in FY2021, #7 in FY2022, #13 in FY2023 and #19 in FY2024; up 8 since FY2024.
12 $564,455
Rank history: #23 in FY2021, not on the FY2022–FY2023 lists and #18 in FY2024; up 6 since FY2024.
13
Tava Products LLC
$562,566
Rank history: not on the FY2021–FY2023 lists and #5 in FY2024; down 8 since FY2024.
14 $544,156
Rank history: not on the FY2021–FY2023 lists and #73 in FY2024; up 59 since FY2024.
15 $407,019
Rank history: #15 in FY2021, #11 in FY2022, #12 in FY2023 and #14 in FY2024; down 1 since FY2024.
16
Containment Corp
$334,516
Rank history: not on the FY2021–FY2022 lists, #48 in FY2023 and #11 in FY2024; down 5 since FY2024.
17 $305,899
Rank history: #26 in FY2021, #25 in FY2022, #34 in FY2023 and #15 in FY2024; down 2 since FY2024.
18 $287,250
Rank history: not on the FY2021–FY2022 lists, #73 in FY2023 and #41 in FY2024; up 23 since FY2024.
19 $274,644
Rank history: #62 in FY2021, #64 in FY2022, #64 in FY2023 and #13 in FY2024; down 6 since FY2024.
20 $263,645
Rank history: #41 in FY2021, #39 in FY2022, #76 in FY2023 and #23 in FY2024; up 3 since FY2024.
21 $226,329
Rank history: not on the FY2021–FY2022 lists, #66 in FY2023 and #9 in FY2024; down 12 since FY2024.
22 $183,924
Rank history: #17 in FY2021, #22 in FY2022, #10 in FY2023 and #16 in FY2024; down 6 since FY2024.
23
Lasar Chemicals LLC
$136,984
Rank history: #60 in FY2021, #37 in FY2022, #40 in FY2023 and #34 in FY2024; up 11 since FY2024.
24 $114,590
Rank history: #18 in FY2021, not on the FY2022–FY2023 lists and #63 in FY2024; up 39 since FY2024.
25 $107,303
Rank history: not on the FY2021–FY2024 lists; new.
26 $87,975
Rank history: not on the FY2021–FY2024 lists; new.
27 $82,988
Rank history: not on the FY2021–FY2023 lists and #17 in FY2024; down 10 since FY2024.
28 $79,955
Rank history: not on the FY2021 list, #88 in FY2022, #83 in FY2023 and #75 in FY2024; up 47 since FY2024.
29 $63,980
Rank history: not on the FY2021–FY2024 lists; new.
30 $54,934
Rank history: #38 in FY2021, #46 in FY2022, #80 in FY2023 and #58 in FY2024; up 28 since FY2024.
31 $52,941
Rank history: #31 in FY2021, #27 in FY2022, #27 in FY2023 and #92 in FY2024; up 61 since FY2024.
32 $52,651
Rank history: not on the FY2021–FY2023 lists and #20 in FY2024; down 12 since FY2024.
33 $52,578
Rank history: not on the FY2021–FY2022 lists, #32 in FY2023 and #25 in FY2024; down 8 since FY2024.
34 $52,330
Rank history: not on the FY2021–FY2022 lists, #36 in FY2023 and #53 in FY2024; up 19 since FY2024.
35 $47,792
Rank history: not on the FY2021–FY2024 lists; new.
36 $46,560
Rank history: not on the FY2021–FY2024 lists; new.
37 $39,990
Rank history: not on the FY2021–FY2024 lists; new.
38 $33,612
Rank history: not on the FY2021–FY2023 lists and #57 in FY2024; up 19 since FY2024.
39
A.M.S. Network LLC
$31,500
Rank history: not on the FY2021–FY2022 lists, #59 in FY2023 and #68 in FY2024; up 29 since FY2024.
40 $27,765
Rank history: not on the FY2021–FY2022 lists, #41 in FY2023 and #28 in FY2024; down 12 since FY2024.
41 $27,553
Rank history: not on the FY2021–FY2023 lists and #49 in FY2024; up 8 since FY2024.
42 $27,299
Rank history: not on the FY2021–FY2024 lists; new.
43 $26,931
Rank history: not on the FY2021–FY2023 lists and #84 in FY2024; up 41 since FY2024.
44 $26,733
Rank history: not on the FY2021–FY2024 lists; new.
45 $25,068
Rank history: #29 in FY2021, #33 in FY2022, #44 in FY2023 and not on the FY2024 list; returned.
46 $23,134
Rank history: not on the FY2021–FY2024 lists; new.
47 $20,677
Rank history: not on the FY2021–FY2024 lists; new.
48 $14,024
Rank history: not on the FY2021–FY2024 lists; up 53 since FY2024.
49
Stericycle Inc
$13,438
Rank history: not on the FY2021–FY2024 lists; new.
50 $12,613
Rank history: not on the FY2021–FY2024 lists; new.
51 $12,276
Rank history: #88 in FY2021, #48 in FY2022 and not on the FY2023–FY2024 lists; up 56 since FY2024.
52 $11,292
Rank history: not on the FY2021 list, #89 in FY2022, #52 in FY2023 and #79 in FY2024; up 27 since FY2024.
53 $10,928
Rank history: #47 in FY2021, #30 in FY2022, #29 in FY2023 and #52 in FY2024; down 1 since FY2024.
54 $8,433
Rank history: not on the FY2021 list, #87 in FY2022 and not on the FY2023–FY2024 lists; returned.
55 $8,307
Rank history: #59 in FY2021, not on the FY2022–FY2023 lists and #88 in FY2024; up 33 since FY2024.
56 $7,900
Rank history: not on the FY2021 list, #2 in FY2022, #67 in FY2023 and not on the FY2024 list; returned.
57 $7,210
Rank history: not on the FY2021–FY2024 lists; new.
58 $6,360
Rank history: #87 in FY2021, #76 in FY2022, #70 in FY2023 and not on the FY2024 list; returned.
59
Environmental Recycling Technologies Inc 2 awardees, including Unitek Solvent Services Inc. and Citibank, N.A.
$6,199
Rank history: not on the FY2021–FY2024 lists; new.
60 $6,150
Rank history: #81 in FY2021, not on the FY2022–FY2023 lists and #89 in FY2024; up 29 since FY2024.
61 $6,007
Rank history: #93 in FY2021 and not on the FY2022–FY2024 lists; returned.
62 $5,680
Rank history: #14 in FY2021, #96 in FY2022, #58 in FY2023 and #46 in FY2024; down 16 since FY2024.
63 $5,500
Rank history: not on the FY2021–FY2024 lists; new.
64 $5,165
Rank history: #21 in FY2021, #42 in FY2022, #53 in FY2023 and #60 in FY2024; down 4 since FY2024.
65 $4,697
Rank history: not on the FY2021–FY2024 lists; new.
66 $4,160
Rank history: not on the FY2021–FY2024 lists; new.
67
Testamerica Laboratories Inc
$3,905
Rank history: not on the FY2021–FY2024 lists; new.
68 $3,660
Rank history: not on the FY2021–FY2024 lists; new.
69 $3,050
Rank history: not on the FY2021–FY2022 lists, #90 in FY2023 and #93 in FY2024; up 24 since FY2024.
70 $2,443
Rank history: not on the FY2021–FY2024 lists; new.
71 $2,300
Rank history: not on the FY2021–FY2024 lists; new.
72 $2,269
Rank history: not on the FY2021 list, #23 in FY2022 and not on the FY2023–FY2024 lists; returned.
73 $1,763
Rank history: #89 in FY2021, not on the FY2022–FY2023 lists and #90 in FY2024; up 17 since FY2024.
74 $213
Rank history: not on the FY2021–FY2024 lists; new.
Show 49 more

74 of 77 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 $23.6 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 4235 contractors in FY2025?

1. ISA (Wyoming) Corp ($6.23M), 2. Sanitz Enterprises, Inc. ($1.41M), 3. Kampi Components Co Inc. ($1.39M), 4. Downeast Logistics LLC ($1.36M), 5. Parker Systems, Inc. ($1.27M), 6. Us21 Inc. ($1.22M), 7. Red Letter Supply, LLC ($1.19M), 8. Elastec Inc. ($1.06M), 9. San Antonio Lighthouse for the Blind ($1.01M), 10. Complete Environmental Products Inc. ($825K).

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