Top 100 Contractors in NAICS 562211: Hazardous Waste Treatment and Disposal, FY2023

Name: Top 100 Contractors in NAICS 562211: Hazardous Waste Treatment and Disposal, FY2023
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2022 – Sep 30, 2023 Code page on GovTribe

The top 10 won 89% of FY2023 NAICS 562211 contract dollars

Contract obligations: $1,806,189,438 Net of deobligations, by contracts coded NAICS 562211
Contractors: 307 Parent companies with an obligation
Largest contractor: Bechtel Corp $836 million, 45.2% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Bechtel Corp 2 awardees, including Bechtel Parsons Blue Grass, A Joint Venture and Bechtel National, Inc. Top agencies Army (Department of the Army)	$836,266,723	45.2%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2024 and #3 in FY2025; up 1 since FY2022.
2	Amentum Services, Inc. 2 awardees, including Washington River Protection Solutions LLC Top agencies DOE (Department of Energy)	$702,757,618	38.0%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2024 and not on the FY2025 list; down 1 since FY2022.
3	Inmar Clearing Inc. Through Inmar RX Solutions Inc. Top agencies HHS (Department of Health and Human Services)	$29,591,124	1.6%	Rank history: #21 in FY2021, #3 in FY2022, #6 in FY2024 and not on the FY2025 list; unchanged since FY2022.
4	Environmental Rail Solutions Inc. Top agencies Army (Department of the Army)	$14,236,862	0.8%	Rank history: #50 in FY2021, #5 in FY2022, #7 in FY2024 and #13 in FY2025; up 1 since FY2022.
5	Aptim Federal Services LLC 2 awardees Top agencies Navy (Department of the Navy) Army (Department of the Army)	$14,207,214	0.8%	Rank history: #33 in FY2021, #7 in FY2022, #76 in FY2024 and not on the FY2025 list; up 2 since FY2022.
6	Clean Harbors Inc 4 awardees, including Clean Harbors Environmental Services Inc. and Safety-Kleen Systems, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) DHS (Department of Homeland Security)	$13,049,001	0.7%	Rank history: #20 in FY2021, #11 in FY2022, #8 in FY2024 and #9 in FY2025; up 5 since FY2022.
7	US Ecology, Inc. 4 awardees, including US Ecology Holdings, Inc., NRC Environmental Services Inc. and US Ecology Washington Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) DOE (Department of Energy)	$12,501,284	0.7%	Rank history: #7 in FY2021, #4 in FY2022, #12 in FY2024 and not on the FY2025 list; down 3 since FY2022.
8	Energysolutions LLC 2 awardees, including Energysolutions Services, Inc. Top agencies Navy (Department of the Navy) DOE (Department of Energy)	$11,264,671	0.6%	Rank history: #9 in FY2021, #6 in FY2022, #32 in FY2024 and not on the FY2025 list; down 2 since FY2022.
9	Tradebe Treatment and Recycling LLC 2 awardees, including Tradebe Environmental Services, LLC Top agencies DLA (Defense Logistics Agency) VA (Department of Veterans Affairs) USDA (Department of Agriculture)	$10,565,543	0.6%	Rank history: #14 in FY2021, #16 in FY2022, #22 in FY2024 and #30 in FY2025; up 7 since FY2022.
10	Seaon Environmental LLC Top agencies Navy (Department of the Navy)	$9,683,560	0.5%	Rank history: #16 in FY2021, #9 in FY2022, #14 in FY2024 and #10 in FY2025; down 1 since FY2022.
11	Waste Control Specialists LLC Top agencies DOE (Department of Energy)	$8,869,530	0.5%	Rank history: #8 in FY2021, #8 in FY2022 and not on the FY2024–FY2025 lists; down 3 since FY2022.
12	C & C Environmental Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) DOI (Department of the Interior)	$7,404,752	0.4%	Rank history: #15 in FY2021, #10 in FY2022, #16 in FY2024 and #12 in FY2025; down 2 since FY2022.
13	Tri-State Government Services Inc. Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$7,393,165	0.4%	Rank history: #13 in FY2021, #19 in FY2022, #15 in FY2024 and #17 in FY2025; up 6 since FY2022.
14	JFL-WCS Partners LLC Through Waste Control Specialists LLC Top agencies DOE (Department of Energy) EPA (Environmental Protection Agency)	$7,309,865	0.4%	Rank history: not on the FY2021–FY2022 lists, #10 in FY2024 and #21 in FY2025; new.
15	Jfe-K Ryukyu Logistic JV Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$6,433,386	0.3%	Rank history: #40 in FY2021, #46 in FY2022, #52 in FY2024 and #39 in FY2025; up 31 since FY2022.
16	Industrial Waste Utilization, LLC Top agencies DLA (Defense Logistics Agency)	$6,152,023	0.3%	Rank history: #12 in FY2021, #13 in FY2022, #18 in FY2024 and #20 in FY2025; down 3 since FY2022.
17	Black Gold Industries Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$6,129,071	0.3%	Rank history: #11 in FY2021, #14 in FY2022, #20 in FY2024 and #22 in FY2025; down 3 since FY2022.
18	Willow Environmental Inc. Top agencies DLA (Defense Logistics Agency)	$5,626,666	0.3%	Rank history: #17 in FY2021, #23 in FY2022, #21 in FY2024 and #14 in FY2025; up 5 since FY2022.
19	Horizon Environmental Services, Inc. Top agencies DLA (Defense Logistics Agency)	$5,438,733	0.3%	Rank history: #31 in FY2021, #31 in FY2022, #11 in FY2024 and #16 in FY2025; up 12 since FY2022.
20	Sued-Muell GMBH & Co. KG Fuer Abfalltransporte UND Sonderabfallbeseitigung Top agencies DLA (Defense Logistics Agency)	$5,140,788	0.3%	Rank history: #19 in FY2021, #22 in FY2022, #13 in FY2024 and #18 in FY2025; up 2 since FY2022.
21	Advant-Edge Solutions of Middle Atlantic Inc. Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force) HHS (Department of Health and Human Services)	$4,835,609	0.3%	Rank history: #56 in FY2021, #20 in FY2022, #23 in FY2024 and #24 in FY2025; down 1 since FY2022.
22	San-I-Pak Pacific, Inc. Top agencies VA (Department of Veterans Affairs)	$3,714,505	0.2%	Rank history: #28 in FY2021, #18 in FY2022 and not on the FY2024–FY2025 lists; down 4 since FY2022.
23	Applied Technology, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$3,671,373	0.2%	Rank history: not on the FY2021 list, #57 in FY2022, #46 in FY2024 and #59 in FY2025; up 34 since FY2022.
24	California Marine Cleaning, Inc. 2 awardees, including Washington Marine Cleaning LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$3,612,330	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 132 since FY2022.
25	Marianas Gas Corp 2 awardees Top agencies DLA (Defense Logistics Agency)	$3,323,636	0.2%	Rank history: not on the FY2021 list, #90 in FY2022, #26 in FY2024 and #29 in FY2025; up 65 since FY2022.
26	Neie Medical Waste Services, LLC Top agencies VA (Department of Veterans Affairs) USDA (Department of Agriculture)	$2,929,480	0.2%	Rank history: #34 in FY2021, #27 in FY2022, #39 in FY2024 and #28 in FY2025; up 1 since FY2022.
27	Veolia Water North America-West LLC 2 awardees, including Veolia Es Technical Solutions LLC and Veolia Es (Uk) Limited Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) EPA (Environmental Protection Agency)	$2,746,607	0.1%	Rank history: #27 in FY2021, #32 in FY2022, #56 in FY2024 and not on the FY2025 list; up 5 since FY2022.
28	J&T Recycling Corporation Top agencies DLA (Defense Logistics Agency)	$2,338,253	0.1%	Rank history: #24 in FY2021, #26 in FY2022, #29 in FY2024 and #31 in FY2025; down 2 since FY2022.
29	Heritage Environmental Services Inc. Through Arcwood Environmental, LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) DOJ (Department of Justice)	$2,150,819	0.1%	Rank history: #25 in FY2021, #17 in FY2022, #34 in FY2024 and not on the FY2025 list; down 12 since FY2022.
30	AES Asset Acquisition Corporation Top agencies DLA (Defense Logistics Agency)	$2,112,351	0.1%	Rank history: #32 in FY2021, #30 in FY2022, #38 in FY2024 and not on the FY2025 list; unchanged since FY2022.
31	Horizon Environmental Solutions Corporation Top agencies DLA (Defense Logistics Agency)	$2,062,185	0.1%	Rank history: #70 in FY2021, #67 in FY2022, #61 in FY2024 and #69 in FY2025; up 36 since FY2022.
32	Perma-Fix Environmental Services, Inc. Top agencies Navy (Department of the Navy) DOE (Department of Energy)	$1,926,267	0.1%	Rank history: #39 in FY2021, #36 in FY2022, #37 in FY2024 and #43 in FY2025; up 4 since FY2022.
33	Entsorgungsbetrieb Luzia Francois GMBH Top agencies USAF (Department of the Air Force)	$1,783,336	0.1%	Rank history: #38 in FY2021, #37 in FY2022, #45 in FY2024 and #58 in FY2025; up 4 since FY2022.
34	Clean Earth Systems, Inc. Top agencies DLA (Defense Logistics Agency)	$1,772,965	0.1%	Rank history: #45 in FY2021, #38 in FY2022, #33 in FY2024 and #40 in FY2025; up 4 since FY2022.
35	Advance Engineering and Construction L.L.C. Top agencies USAF (Department of the Air Force)	$1,747,859	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #37 in FY2025; new.
36	Earth Smart Environmental Solutions LLC Top agencies VA (Department of Veterans Affairs) EPA (Environmental Protection Agency) USDA (Department of Agriculture)	$1,730,827	0.1%	Rank history: #54 in FY2021, #50 in FY2022, #30 in FY2024 and #36 in FY2025; up 14 since FY2022.
37	Pacific Commercial Services, Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) DOI (Department of the Interior)	$1,705,975	0.1%	Rank history: #36 in FY2021, #39 in FY2022, #24 in FY2024 and #25 in FY2025; up 2 since FY2022.
38	Ecosystech JV LLC Top agencies DLA (Defense Logistics Agency)	$1,679,753	0.1%	Rank history: #18 in FY2021, #25 in FY2022 and not on the FY2024–FY2025 lists; down 13 since FY2022.
39	Southwest Research Institute Top agencies NRC (Nuclear Regulatory Commission)	$1,643,339	0.1%	Rank history: #23 in FY2021, #24 in FY2022 and not on the FY2024–FY2025 lists; down 15 since FY2022.
40	Tet Consulting & Business Management Services, LLC Top agencies DHS (Department of Homeland Security)	$1,633,897	0.1%	Rank history: #46 in FY2021, #41 in FY2022, #40 in FY2024 and not on the FY2025 list; up 1 since FY2022.
41	EDM Enterprises, LLC Top agencies VA (Department of Veterans Affairs)	$1,604,886	0.1%	Rank history: #35 in FY2021, #34 in FY2022, #36 in FY2024 and #44 in FY2025; down 7 since FY2022.
42	Kimin Eng Co., Ltd. Top agencies DLA (Defense Logistics Agency)	$1,549,586	0.1%	Rank history: #59 in FY2021, #51 in FY2022, #53 in FY2024 and not on the FY2025 list; up 9 since FY2022.
43	Relife SPA Through Relife Recycling S.R.L. Top agencies DLA (Defense Logistics Agency)	$1,491,308	0.1%	Rank history: not on the FY2021–FY2022 lists, #42 in FY2024 and #45 in FY2025; new.
44	Johnsondanforth, Inc. Top agencies VA (Department of Veterans Affairs)	$1,448,883	0.1%	Rank history: #51 in FY2021, #35 in FY2022, #48 in FY2024 and #83 in FY2025; down 9 since FY2022.
45	Okinawaken Sangyo Haikibutsushori Cooperative Association Top agencies Navy (Department of the Navy)	$1,432,908	0.1%	Rank history: #42 in FY2021, #43 in FY2022, #44 in FY2024 and #42 in FY2025; down 2 since FY2022.
46	Graham & Associates Inc. Top agencies USAF (Department of the Air Force)	$1,420,903	0.1%	Rank history: #37 in FY2021, #45 in FY2022 and not on the FY2024–FY2025 lists; down 1 since FY2022.
47	Broadview Waste Solutions, Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) DOI (Department of the Interior)	$1,380,662	0.1%	Rank history: not on the FY2021–FY2022 lists, #65 in FY2024 and #61 in FY2025; up 63 since FY2022.
48	Tad Environment Top agencies DLA (Defense Logistics Agency)	$1,357,580	0.1%	Rank history: #52 in FY2021, #47 in FY2022, #49 in FY2024 and #67 in FY2025; down 1 since FY2022.
49	West Central Environmental Corp. Top agencies DLA (Defense Logistics Agency)	$1,111,033	0.1%	Rank history: #53 in FY2021, #48 in FY2022, #41 in FY2024 and #46 in FY2025; down 1 since FY2022.
50	Hanford Tank Waste Operations & Closure, LLC Top agencies DOE (Department of Energy)	$1,000,000	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #1 in FY2025; new.
51	Aaecon General Contracting LLC Top agencies DOI (Department of the Interior)	$968,177	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
52	Plexus Scientific Corporation Top agencies Commerce (Department of Commerce)	$955,619	0.1%	Rank history: #86 in FY2021, #92 in FY2022, #77 in FY2024 and not on the FY2025 list; up 40 since FY2022.
53	Hitz Holdings U.S.a. Inc. Through NAC International Inc. Top agencies USDA (Department of Agriculture)	$945,600	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
54	GS Environmental, Inc. Top agencies DLA (Defense Logistics Agency)	$742,711	<0.1%	Rank history: #29 in FY2021, #33 in FY2022, #43 in FY2024 and #35 in FY2025; down 21 since FY2022.
55	TD Environmental Inc. Top agencies DLA (Defense Logistics Agency)	$719,124	<0.1%	Rank history: #44 in FY2021, #58 in FY2022, #54 in FY2024 and #52 in FY2025; up 3 since FY2022.
56	Auxilio Management Services Top agencies DOI (Department of the Interior)	$717,522	<0.1%	Rank history: #83 in FY2021, #55 in FY2022, #64 in FY2024 and #63 in FY2025; down 1 since FY2022.
57	CHC GP Top agencies Navy (Department of the Navy)	$675,648	<0.1%	Rank history: not on the FY2021 list, #54 in FY2022 and not on the FY2024–FY2025 lists; down 3 since FY2022.
58	Willkom, Inc. Top agencies DLA (Defense Logistics Agency)	$626,405	<0.1%	Rank history: #57 in FY2021, #53 in FY2022, #67 in FY2024 and not on the FY2025 list; down 5 since FY2022.
59	Stericycle Inc Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) HHS (Department of Health and Human Services)	$548,815	<0.1%	Rank history: not on the FY2021–FY2022 lists, #66 in FY2024 and #50 in FY2025; up 115 since FY2022.
60	Kankyo Solution Co. Ltd. Top agencies Navy (Department of the Navy)	$533,216	<0.1%	Rank history: #55 in FY2021, #61 in FY2022, #60 in FY2024 and not on the FY2025 list; up 1 since FY2022.
61	Ecolfer SRL Through Relife Recycling S.R.L. Top agencies DLA (Defense Logistics Agency)	$508,411	<0.1%	Rank history: #47 in FY2021, #40 in FY2022 and not on the FY2024–FY2025 lists; down 21 since FY2022.
62	Yamaki Co., Ltd. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$492,561	<0.1%	Rank history: #68 in FY2021, #64 in FY2022, #74 in FY2024 and not on the FY2025 list; up 2 since FY2022.
63	Hepaco LLC Top agencies Navy (Department of the Navy)	$490,000	<0.1%	Rank history: not on the FY2021 list, #56 in FY2022 and not on the FY2024–FY2025 lists; down 7 since FY2022.
64	BWX Technologies, Inc. Through Bwxt Nog Technologies, Inc. Top agencies DOE (Department of Energy)	$488,243	<0.1%	Rank history: #69 in FY2021, #68 in FY2022, #69 in FY2024 and #85 in FY2025; up 4 since FY2022.
65	Best Choice Environmental Inc. Top agencies VA (Department of Veterans Affairs)	$483,022	<0.1%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2024 and #60 in FY2025; new.
66	Remondis Industrie Service GMBH. Top agencies DLA (Defense Logistics Agency)	$464,106	<0.1%	Rank history: not on the FY2021–FY2022 lists, #50 in FY2024 and #48 in FY2025; new.
67	K.i. Kogyo Ltd. Top agencies Navy (Department of the Navy)	$462,541	<0.1%	Rank history: #41 in FY2021, #28 in FY2022 and not on the FY2024–FY2025 lists; down 39 since FY2022.
68	Hamilton Alliance Inc. Top agencies VA (Department of Veterans Affairs)	$458,318	<0.1%	Rank history: #96 in FY2021, #85 in FY2022, #80 in FY2024 and #79 in FY2025; up 17 since FY2022.
69	Sal Construction Co. Top agencies HHS (Department of Health and Human Services)	$394,860	<0.1%	Rank history: #75 in FY2021, #70 in FY2022, #72 in FY2024 and not on the FY2025 list; up 1 since FY2022.
70	Shin Ho ENV Top agencies DHA (Defense Health Agency)	$350,739	<0.1%	Rank history: not on the FY2021 list, #71 in FY2022 and not on the FY2024–FY2025 lists; up 1 since FY2022.
71	Rethmann AG & Co. KG Through Remondis Industrie Service Gmbh. Top agencies DLA (Defense Logistics Agency)	$312,799	<0.1%	Rank history: #63 in FY2021, #63 in FY2022 and not on the FY2024–FY2025 lists; down 8 since FY2022.
72	Onaka Gumi Co.,Ltd. Top agencies DLA (Defense Logistics Agency)	$286,996	<0.1%	Rank history: #65 in FY2021, #60 in FY2022, #62 in FY2024 and #53 in FY2025; down 12 since FY2022.
73	Up-Side Management Co Top agencies Army (Department of the Army)	$270,978	<0.1%	Rank history: #82 in FY2021, #79 in FY2022, #63 in FY2024 and #70 in FY2025; up 6 since FY2022.
74	Ncns Environmental, Inc. Top agencies VA (Department of Veterans Affairs)	$263,642	<0.1%	Rank history: #71 in FY2021, #80 in FY2022, #70 in FY2024 and #91 in FY2025; up 6 since FY2022.
75	Transformer Technologies LLC Top agencies DOI (Department of the Interior)	$260,000	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
76	Jfe-K Iwakuni HW JV Top agencies DLA (Defense Logistics Agency)	$257,290	<0.1%	Rank history: #84 in FY2021, #83 in FY2022 and not on the FY2024–FY2025 lists; up 7 since FY2022.
77	Akima Global Logistics, LLC Top agencies DHS (Department of Homeland Security)	$253,738	<0.1%	Rank history: not on the FY2021–FY2022 lists, #87 in FY2024 and #92 in FY2025; new.
78	Cherokee Nation Environmental Solutions, L.L.C. Top agencies DLA (Defense Logistics Agency)	$234,763	<0.1%	Rank history: #87 in FY2021, #82 in FY2022, #73 in FY2024 and #72 in FY2025; up 4 since FY2022.
79	Niko Marine Transportation Co., Ltd Top agencies Navy (Department of the Navy)	$230,496	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
80	Whitewater Environmental LLC Top agencies USAF (Department of the Air Force)	$226,263	<0.1%	Rank history: not on the FY2021–FY2022 lists, #93 in FY2024 and #74 in FY2025; new.
81	D'S Ventures, LLC Top agencies HHS (Department of Health and Human Services)	$216,617	<0.1%	Rank history: not on the FY2021 list, #86 in FY2022, #71 in FY2024 and #94 in FY2025; up 5 since FY2022.
82	Verina Consulting Group LLC Top agencies USAF (Department of the Air Force)	$213,012	<0.1%	Rank history: #80 in FY2021, #76 in FY2022, #82 in FY2024 and #75 in FY2025; down 6 since FY2022.
83	Republic Services Inc. 4 awardees, including Allied Waste Systems, Inc. and ACV Environmental Services Inc. Top agencies Army (Department of the Army) DOJ (Department of Justice)	$201,178	<0.1%	Rank history: #76 in FY2021, not on the FY2022 list, #17 in FY2024 and #23 in FY2025; returned.
84	Set Environmental Inc. Top agencies DOT (Department of Transportation) DOJ (Department of Justice)	$197,997	<0.1%	Rank history: #77 in FY2021, #96 in FY2022 and not on the FY2024–FY2025 lists; up 12 since FY2022.
85	Ain-Mw JV Top agencies Navy (Department of the Navy)	$193,649	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 97 since FY2022.
86	Izmit Buyuksehir Belediyesi Through Izaydas Izmit Atik VE Artiklari Aritma Yakma VE Degerlendirme Anonim Sirketi Top agencies DLA (Defense Logistics Agency)	$177,390	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 56 since FY2022.
87	Biomedical Waste Services, Inc. Top agencies VA (Department of Veterans Affairs)	$170,766	<0.1%	Rank history: #78 in FY2021, #75 in FY2022 and not on the FY2024–FY2025 lists; down 12 since FY2022.
88	Set the Standard, LLC Top agencies VA (Department of Veterans Affairs)	$168,812	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 19 since FY2022.
89	American Integrated Services, Inc. Top agencies DOJ (Department of Justice)	$166,193	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 29 since FY2022.
90	RLA Holdings, Inc. Top agencies USDA (Department of Agriculture)	$160,000	<0.1%	Rank history: not on the FY2021 list, #78 in FY2022 and not on the FY2024–FY2025 lists; down 12 since FY2022.
91	Envirosafe Demil LLC Top agencies DOJ (Department of Justice)	$159,800	<0.1%	Rank history: not on the FY2021 list, #100 in FY2022 and not on the FY2024–FY2025 lists; up 9 since FY2022.
92	Japan R&D Technologies Co Ltd Top agencies USAF (Department of the Air Force)	$156,534	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
93	Reworld Holding Corporation 4 awardees, including Reworld Solutions, LLC and Covanta Sustainable Solutions, LLC Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice)	$150,715	<0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #96 in FY2025; up 29 since FY2022.
94	Sunrise Environmental LLC Top agencies DOJ (Department of Justice)	$149,845	<0.1%	Rank history: not on the FY2021–FY2022 lists, #89 in FY2024 and not on the FY2025 list; up 45 since FY2022.
95	Xion Construction Company L.L.C. Top agencies USAF (Department of the Air Force)	$149,770	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
96	Advanced Environmental Solutions Inc. Top agencies VA (Department of Veterans Affairs)	$149,129	<0.1%	Rank history: not on the FY2021–FY2022 lists, #85 in FY2024 and not on the FY2025 list; up 15 since FY2022.
97	Michael Renka Export GMBH Top agencies Army (Department of the Army)	$144,718	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 18 since FY2022.
98	Noble Supply & Logistics LLC Top agencies USAF (Department of the Air Force)	$144,168	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
99	EWA Direction Inc. Top agencies VA (Department of Veterans Affairs)	$142,289	<0.1%	Rank history: #67 in FY2021, not on the FY2022 list, #57 in FY2024 and #41 in FY2025; up 55 since FY2022.
100	Hidden Water Inc. Top agencies DLA (Defense Logistics Agency) DOI (Department of the Interior)	$139,721	<0.1%	Rank history: #66 in FY2021, #49 in FY2022 and not on the FY2024–FY2025 lists; down 51 since FY2022.

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100 of 307 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 $1.85 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. 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 2023 ran Oct 1, 2022 – Sep 30, 2023. 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 FY2022. "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 FY2022 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 NAICS 562211 contractors in FY2023?

1. Bechtel Corp ($836M), 2. Amentum Services, Inc. ($703M), 3. Inmar Clearing Inc. ($29.6M), 4. Environmental Rail Solutions Inc. ($14.2M), 5. Aptim Federal Services LLC ($14.2M), 6. Clean Harbors Inc ($13M), 7. US Ecology, Inc. ($12.5M), 8. Energysolutions LLC ($11.3M), 9. Tradebe Treatment and Recycling LLC ($10.6M), 10. Seaon Environmental LLC ($9.68M).

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