Top 80 Contractors in PSC 4235: Hazardous Material Spill Containment and Clean-up Equipment and Material, Jul 2025–Jun 2026

Name: Top 80 Contractors in PSC 4235: Hazardous Material Spill Containment and Clean-up Equipment and Material, Jul 2025–Jun 2026
Creator: GovTribe

Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe

The top 10 won 69% of PSC 4235 contract dollars from July 2025 through June 2026

Contract obligations: $19,767,105 Net of deobligations, by contracts coded PSC 4235
Contractors: 84 Parent companies with an obligation
Largest contractor: ISA (Wyoming) Corp $4.14 million, 20.5% of obligations
Data as of: Oct 16, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 80 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	ISA (Wyoming) Corp Top agencies Navy (Department of the Navy)	$4,143,299	20.5%	Rank history: #2 in FY2021, #1 in FY2022, #5 in FY2023, #6 in FY2024 and #1 in FY2025; unchanged since Jul 2024–Jun 2025.
2	Elastec Inc. Top agencies Navy (Department of the Navy)	$1,886,562	9.3%	Rank history: #4 in FY2021, #12 in FY2022, #92 in FY2023, #8 in FY2024 and #8 in FY2025; up 5 since Jul 2024–Jun 2025.
3	Parker Systems, Inc. Top agencies Navy (Department of the Navy)	$1,660,463	8.2%	Rank history: #5 in FY2021, #3 in FY2022, #7 in FY2023, #7 in FY2024 and #5 in FY2025; up 3 since Jul 2024–Jun 2025.
4	Sanitz Enterprises, Inc. Top agencies DLA (Defense Logistics Agency)	$1,346,221	6.7%	Rank history: #40 in FY2021, #24 in FY2022, #20 in FY2023, #22 in FY2024 and #2 in FY2025; up 10 since Jul 2024–Jun 2025.
5	Us21 Inc. Top agencies DOJ (Department of Justice)	$1,219,091	6.0%	Rank history: not on the FY2021–FY2023 lists, #47 in FY2024 and #6 in FY2025; new, not ranked in Jul 2024–Jun 2025.
6	San Antonio Lighthouse for the Blind Top agencies DLA (Defense Logistics Agency)	$810,438	4.0%	Rank history: #6 in FY2021, #6 in FY2022, #9 in FY2023, #10 in FY2024 and #9 in FY2025; up 3 since Jul 2024–Jun 2025.
7	Complete Environmental Products Inc. Top agencies DLA (Defense Logistics Agency)	$800,159	4.0%	Rank history: #16 in FY2021, #4 in FY2022, #3 in FY2023, #4 in FY2024 and #10 in FY2025; up 3 since Jul 2024–Jun 2025.
8	Containment Corporation Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$773,544	3.8%	Rank history: not on the FY2021–FY2022 lists, #48 in FY2023, #11 in FY2024 and #16 in FY2025; up 7 since Jul 2024–Jun 2025.
9	Winston-Salem Industries for the Blind Inc. Top agencies DLA (Defense Logistics Agency)	$687,419	3.4%	Rank history: #15 in FY2021, #11 in FY2022, #12 in FY2023, #14 in FY2024 and #15 in FY2025; up 9 since Jul 2024–Jun 2025.
10	Noble Supply & Logistics, LLC Top agencies DOS (Department of State) Navy (Department of the Navy)	$578,373	2.9%	Rank history: #18 in FY2021, not on the FY2022–FY2023 lists, #63 in FY2024 and #24 in FY2025; up 14 since Jul 2024–Jun 2025.
11	Federal Resources Supply Company, LLC Top agencies DOS (Department of State)	$553,582	2.7%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
12	New PIG Corporation 2 awardees, including Spilltech Environmental Inc. Top agencies DLA (Defense Logistics Agency)	$545,568	2.7%	Rank history: #17 in FY2021, #22 in FY2022, #10 in FY2023, #16 in FY2024 and #22 in FY2025; up 8 since Jul 2024–Jun 2025.
13	Makpak, LLC Top agencies DLA (Defense Logistics Agency)	$459,537	2.3%	Rank history: #31 in FY2021, #27 in FY2022, #27 in FY2023, #92 in FY2024 and #31 in FY2025; up 19 since Jul 2024–Jun 2025.
14	Downeast Logistics LLC Top agencies DLA (Defense Logistics Agency)	$452,862	2.2%	Rank history: #3 in FY2021, #5 in FY2022, #4 in FY2023, #3 in FY2024 and #4 in FY2025; down 10 since Jul 2024–Jun 2025.
15	Tava Products LLC Top agencies DOJ (Department of Justice)	$424,851	2.1%	Rank history: not on the FY2021–FY2023 lists, #5 in FY2024 and #13 in FY2025; down 10 since Jul 2024–Jun 2025.
16	Safeware Inc. Top agencies DOJ (Department of Justice)	$403,617	2.0%	Rank history: not on the FY2021–FY2022 lists, #66 in FY2023, #9 in FY2024 and #21 in FY2025; up 1 since Jul 2024–Jun 2025.
17	Rich Industries Inc. Top agencies Navy (Department of the Navy)	$350,332	1.7%	Rank history: #7 in FY2021, #7 in FY2022, #13 in FY2023, #19 in FY2024 and #11 in FY2025; down 9 since Jul 2024–Jun 2025.
18	Janels Industries Inc. Top agencies DLA (Defense Logistics Agency)	$191,000	0.9%	Rank history: not on the FY2021–FY2022 lists, #73 in FY2023, #41 in FY2024 and #18 in FY2025; up 5 since Jul 2024–Jun 2025.
19	The A.r.k. Enterprises. Inc. Top agencies DLA (Defense Logistics Agency)	$190,796	0.9%	Rank history: #41 in FY2021, #39 in FY2022, #76 in FY2023, #23 in FY2024 and #20 in FY2025; unchanged since Jul 2024–Jun 2025.
20	Aircraft & Commercial Enterprises, Inc. Top agencies DLA (Defense Logistics Agency)	$163,179	0.8%	Rank history: not on the FY2021–FY2023 lists, #57 in FY2024 and #38 in FY2025; up 16 since Jul 2024–Jun 2025.
21	Lasar Chemicals LLC Top agencies DLA (Defense Logistics Agency)	$148,916	0.7%	Rank history: #60 in FY2021, #37 in FY2022, #40 in FY2023, #34 in FY2024 and #23 in FY2025; up 10 since Jul 2024–Jun 2025.
22	Cameron Chemical Corp Top agencies DHS (Department of Homeland Security)	$141,376	0.7%	Rank history: not on the FY2021 list, #88 in FY2022, #83 in FY2023, #75 in FY2024 and #28 in FY2025; up 27 since Jul 2024–Jun 2025.
23	Enpac LLC Top agencies DLA (Defense Logistics Agency)	$137,835	0.7%	Rank history: #26 in FY2021, #25 in FY2022, #34 in FY2023, #15 in FY2024 and #17 in FY2025; down 7 since Jul 2024–Jun 2025.
24	Frham Safety Products LLC Top agencies Navy (Department of the Navy)	$136,414	0.7%	Rank history: not on the FY2021–FY2024 lists and #48 in FY2025; up 66 since Jul 2024–Jun 2025.
25	Aspetto Inc. Top agencies Army (Department of the Army)	$131,483	0.7%	Rank history: not on the FY2021–FY2023 lists, #73 in FY2024 and #14 in FY2025; down 13 since Jul 2024–Jun 2025.
26	Safe-Tech Solutions LLC Top agencies DLA (Defense Logistics Agency)	$122,447	0.6%	Rank history: #62 in FY2021, #64 in FY2022, #64 in FY2023, #13 in FY2024 and #19 in FY2025; down 13 since Jul 2024–Jun 2025.
27	GTA Containers, LLC Top agencies DLA (Defense Logistics Agency)	$119,741	0.6%	Rank history: #14 in FY2021, #96 in FY2022, #58 in FY2023, #46 in FY2024 and #62 in FY2025; up 49 since Jul 2024–Jun 2025.
28	APC Equipment & Manufacturing Inc. Top agencies DOJ (Department of Justice)	$107,303	0.5%	Rank history: not on the FY2021–FY2024 lists and #25 in FY2025; new, not ranked in Jul 2024–Jun 2025.
29	Safety-Kleen Systems, Inc. Top agencies Army (Department of the Army)	$105,083	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
30	Americlean Franchising Corporation Top agencies HHS (Department of Health and Human Services)	$87,975	0.4%	Rank history: not on the FY2021–FY2024 lists and #26 in FY2025; new, not ranked in Jul 2024–Jun 2025.
31	Pacific Commercial Services, Inc. Top agencies DHS (Department of Homeland Security)	$87,853	0.4%	Rank history: not on the FY2021–FY2024 lists and #29 in FY2025; up 16 since Jul 2024–Jun 2025.
32	Red Letter Supply, LLC Top agencies DLA (Defense Logistics Agency)	$82,868	0.4%	Rank history: not on the FY2021–FY2022 lists, #23 in FY2023, #1 in FY2024 and #7 in FY2025; down 30 since Jul 2024–Jun 2025.
33	Adirondack Electronics Inc. Top agencies Navy (Department of the Navy)	$76,732	0.4%	Rank history: #47 in FY2021, #30 in FY2022, #29 in FY2023, #52 in FY2024 and #53 in FY2025; up 37 since Jul 2024–Jun 2025.
34	Nana Regional Corporation, Inc. Through Akima Global Logistics, LLC Top agencies DHS (Department of Homeland Security)	$58,317	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
35	Wrigglesworth Enterprises Inc. Top agencies DOE (Department of Energy) DLA (Defense Logistics Agency)	$58,049	0.3%	Rank history: #38 in FY2021, #46 in FY2022, #80 in FY2023, #58 in FY2024 and #30 in FY2025; new, not ranked in Jul 2024–Jun 2025.
36	Madsen Ventures LLC Top agencies DOI (Department of the Interior)	$50,000	0.2%	Rank history: not on the FY2021–FY2022 lists, #36 in FY2023, #53 in FY2024 and #34 in FY2025; up 48 since Jul 2024–Jun 2025.
37	Puck Vertriebs GMBH Top agencies Army (Department of the Army)	$47,792	0.2%	Rank history: not on the FY2021–FY2024 lists and #35 in FY2025; new, not ranked in Jul 2024–Jun 2025.
38	Basic Concepts, Incorporated Top agencies DLA (Defense Logistics Agency)	$43,209	0.2%	Rank history: #23 in FY2021, not on the FY2022–FY2023 lists, #18 in FY2024 and #12 in FY2025; down 27 since Jul 2024–Jun 2025.
39	Dial Freight Management LLC Top agencies DHS (Department of Homeland Security)	$39,990	0.2%	Rank history: not on the FY2021–FY2024 lists and #37 in FY2025; new, not ranked in Jul 2024–Jun 2025.
40	Soncoast Procurement, LLC Top agencies DLA (Defense Logistics Agency)	$37,297	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
41	Spilltech Environmental Inc. Top agencies DLA (Defense Logistics Agency)	$37,203	0.2%	Rank history: not on the FY2021–FY2023 lists, #17 in FY2024 and #27 in FY2025; down 12 since Jul 2024–Jun 2025.
42	GPC Consolidated Reporting Top agencies USDA (Department of Agriculture)	$32,206	0.2%	Rank history: not on the FY2021 list, #69 in FY2022, #81 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
43	Aplix Inc. Top agencies Navy (Department of the Navy)	$28,980	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
44	Arcwood Environmental, LLC Top agencies EPA (Environmental Protection Agency)	$26,169	0.1%	Rank history: not on the FY2021–FY2023 lists, #84 in FY2024 and #43 in FY2025; up 20 since Jul 2024–Jun 2025.
45	Giga, Inc. Top agencies DLA (Defense Logistics Agency)	$23,720	0.1%	Rank history: #29 in FY2021, #33 in FY2022, #44 in FY2023, not on the FY2024 list and #45 in FY2025; up 42 since Jul 2024–Jun 2025.
46	A.M.S. Network LLC Top agencies Navy (Department of the Navy)	$23,250	0.1%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2023, #68 in FY2024 and #39 in FY2025; down 9 since Jul 2024–Jun 2025.
47	South Texas Lighthouse for the Blind Foundation Top agencies USAF (Department of the Air Force)	$22,186	0.1%	Rank history: not on the FY2021–FY2024 lists and #46 in FY2025; down 5 since Jul 2024–Jun 2025.
48	Mil-Stock Electronics, Inc. Top agencies DLA (Defense Logistics Agency)	$21,500	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
49	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency)	$16,678	0.1%	Rank history: #11 in FY2021, #14 in FY2022, #11 in FY2023, #2 in FY2024 and #3 in FY2025; down 46 since Jul 2024–Jun 2025.
50	Argonaut Inflatable Research and Engineering, Inc. Top agencies DLA (Defense Logistics Agency)	$16,460	0.1%	Rank history: #21 in FY2021, #42 in FY2022, #53 in FY2023, #60 in FY2024 and #64 in FY2025; up 3 since Jul 2024–Jun 2025.
51	Guardian Manufacturing Company, LLC Top agencies Navy (Department of the Navy)	$15,135	0.1%	Rank history: not on the FY2021–FY2024 lists and #50 in FY2025; up 7 since Jul 2024–Jun 2025.
52	J.G.B. Enterprises Inc. Through Echelon Supply and Service, Inc. Top agencies DLA (Defense Logistics Agency)	$14,439	0.1%	Rank history: not on the FY2021–FY2023 lists, #94 in FY2024 and not on the FY2025 list; up 30 since Jul 2024–Jun 2025.
53	Patriot Environmental Services, Inc. Top agencies USAF (Department of the Air Force)	$13,655	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
54	Tetra Tech, Inc. 3 awardees Top agencies DHS (Department of Homeland Security)	$12,016	0.1%	Rank history: not on the FY2021 list, #89 in FY2022, #52 in FY2023, #79 in FY2024 and #52 in FY2025; up 7 since Jul 2024–Jun 2025.
55	Nasco Aerospace and Electronics LLC Top agencies Navy (Department of the Navy)	$11,975	0.1%	Rank history: #91 in FY2021, #55 in FY2022, not on the FY2023 list, #86 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
56	Allied Marine & Industrial Services LLC Top agencies DHS (Department of Homeland Security)	$11,812	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
57	3M Company Top agencies DLA (Defense Logistics Agency)	$8,307	<0.1%	Rank history: #59 in FY2021, not on the FY2022–FY2023 lists, #88 in FY2024 and #55 in FY2025; up 15 since Jul 2024–Jun 2025.
58	Acomex LLC Top agencies DHS (Department of Homeland Security)	$7,548	<0.1%	Rank history: not on the FY2021–FY2024 lists and #68 in FY2025; new, not ranked in Jul 2024–Jun 2025.
59	Universaltrades, LLC Top agencies DHS (Department of Homeland Security)	$7,210	<0.1%	Rank history: not on the FY2021–FY2024 lists and #57 in FY2025; new, not ranked in Jul 2024–Jun 2025.
60	Sec-Ops, Inc. Top agencies DOJ (Department of Justice)	$6,906	<0.1%	Rank history: not on the FY2021–FY2024 lists and #42 in FY2025; down 15 since Jul 2024–Jun 2025.
61	Laser Plus Imaging, LLC Top agencies DLA (Defense Logistics Agency)	$6,262	<0.1%	Rank history: not on the FY2021–FY2023 lists, #91 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
62	Jgils, LLC Top agencies DLA (Defense Logistics Agency)	$6,007	<0.1%	Rank history: #93 in FY2021, not on the FY2022–FY2024 lists and #61 in FY2025; new, not ranked in Jul 2024–Jun 2025.
63	R.s. Hughes Company, Inc. Top agencies DHS (Department of Homeland Security)	$5,500	<0.1%	Rank history: not on the FY2021–FY2024 lists and #63 in FY2025; new, not ranked in Jul 2024–Jun 2025.
64	Citibank, N.A. Top agencies DHS (Department of Homeland Security)	$5,449	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
65	BKC Industries Inc. Top agencies DLA (Defense Logistics Agency)	$5,069	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
66	Ueg, Inc. Top agencies DHS (Department of Homeland Security)	$5,040	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
67	Windward Enterprises, LLC Top agencies DLA (Defense Logistics Agency)	$4,750	<0.1%	Rank history: not on the FY2021–FY2024 lists and #71 in FY2025; up 21 since Jul 2024–Jun 2025.
68	Dekol LLC Top agencies DLA (Defense Logistics Agency)	$4,574	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
69	GMS Industrial Supply, Inc. Top agencies DLA (Defense Logistics Agency)	$4,131	<0.1%	Rank history: not on the FY2021 list, #2 in FY2022, #67 in FY2023, not on the FY2024 list and #56 in FY2025; unchanged since Jul 2024–Jun 2025.
70	Pacific Environmental Corporation Top agencies DHS (Department of Homeland Security)	$3,596	<0.1%	Rank history: not on the FY2021–FY2022 lists, #90 in FY2023, #93 in FY2024 and #69 in FY2025; up 7 since Jul 2024–Jun 2025.
71	Environmental Recycling Technologies Inc 2 awardees, including Unitek Solvent Services Inc. and Citibank, N.A. Top agencies DHS (Department of Homeland Security)	$3,447	<0.1%	Rank history: not on the FY2021–FY2024 lists and #59 in FY2025; up 10 since Jul 2024–Jun 2025.
72	Electrolock Inc. Top agencies DLA (Defense Logistics Agency)	$3,435	<0.1%	Rank history: #87 in FY2021, #76 in FY2022, #70 in FY2023, not on the FY2024 list and #58 in FY2025; up 2 since Jul 2024–Jun 2025.
73	Midway Industrial Supply Inc. Top agencies DLA (Defense Logistics Agency)	$2,876	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
74	ASA Environmental Products Inc. Top agencies Navy (Department of the Navy)	$2,663	<0.1%	Rank history: not on the FY2021–FY2023 lists, #30 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
75	Spill 911 Inc. Top agencies DLA (Defense Logistics Agency)	$2,600	<0.1%	Rank history: not on the FY2021–FY2023 lists, #39 in FY2024 and not on the FY2025 list; down 29 since Jul 2024–Jun 2025.
76	Integrated Medcraft LLC Top agencies DLA (Defense Logistics Agency)	$2,544	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
77	Imbibitive Technologies America, Inc. Top agencies DLA (Defense Logistics Agency)	$1,194	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
78	Morning Star Industries Inc. Top agencies Navy (Department of the Navy)	$1,041	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
79	H C Merchandisers, Inc. Top agencies DLA (Defense Logistics Agency)	$453	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
80	W.w. Grainger, Inc. Top agencies DLA (Defense Logistics Agency)	$282	<0.1%	Rank history: #48 in FY2021, #67 in FY2022, #62 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.

Show 55 more

80 of 84 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 $20.2 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.
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 Jul 2024–Jun 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 4235 contractors in Jul 2025–Jun 2026?

1. ISA (Wyoming) Corp ($4.14M), 2. Elastec Inc. ($1.89M), 3. Parker Systems, Inc. ($1.66M), 4. Sanitz Enterprises, Inc. ($1.35M), 5. Us21 Inc. ($1.22M), 6. San Antonio Lighthouse for the Blind ($810K), 7. Complete Environmental Products Inc. ($800K), 8. Containment Corporation ($774K), 9. Winston-Salem Industries for the Blind Inc. ($687K), 10. Noble Supply & Logistics, LLC ($578K).

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