Top 100 Contractors in NAICS 562112: Hazardous Waste Collection, FY2023

Name: Top 100 Contractors in NAICS 562112: Hazardous Waste Collection, FY2023
Creator: GovTribe

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

The top 10 won 46% of FY2023 NAICS 562112 contract dollars

Contract obligations: $70,171,373 Net of deobligations, by contracts coded NAICS 562112
Contractors: 200 Parent companies with an obligation
Largest contractor: Triumvirate Environmental, LLC $6.72 million, 8.5% 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	Triumvirate Environmental, LLC Top agencies HHS (Department of Health and Human Services) Commerce (Department of Commerce) VA (Department of Veterans Affairs)	$6,717,597	8.5%	Rank history: #3 in FY2021, #4 in FY2022, #2 in FY2024 and #2 in FY2025; up 3 since FY2022.
2	Clean Venture Inc. Top agencies HHS (Department of Health and Human Services)	$5,404,821	6.9%	Rank history: not on the FY2021 list, #2 in FY2022, #29 in FY2024 and not on the FY2025 list; unchanged since FY2022.
3	Neie Medical Waste Services, LLC Top agencies VA (Department of Veterans Affairs) DHS (Department of Homeland Security)	$4,928,175	6.3%	Rank history: #1 in FY2021, #1 in FY2022, #4 in FY2024 and #3 in FY2025; down 2 since FY2022.
4	Earth Smart Environmental Solutions LLC Top agencies VA (Department of Veterans Affairs)	$4,574,548	5.8%	Rank history: #4 in FY2021, #3 in FY2022, #3 in FY2024 and #4 in FY2025; down 1 since FY2022.
5	Perikin Enterprises LLC Top agencies Army (Department of the Army)	$3,295,130	4.2%	Rank history: #7 in FY2021, #10 in FY2022, #13 in FY2024 and #6 in FY2025; up 5 since FY2022.
6	Mellor Engineering Inc. Top agencies Army (Department of the Army)	$2,492,808	3.2%	Rank history: #13 in FY2021, #11 in FY2022 and not on the FY2024–FY2025 lists; up 5 since FY2022.
7	Specpro Sustainment and Environmental, LLC Top agencies Army (Department of the Army)	$2,291,529	2.9%	Rank history: #9 in FY2021, #9 in FY2022 and not on the FY2024–FY2025 lists; up 2 since FY2022.
8	Mabbett & Associates, Inc. Top agencies VA (Department of Veterans Affairs)	$2,284,745	2.9%	Rank history: #14 in FY2021, #15 in FY2022, #12 in FY2024 and #11 in FY2025; up 7 since FY2022.
9	Potomac Environmental Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DOJ (Department of Justice)	$2,237,616	2.8%	Rank history: not on the FY2021 list, #29 in FY2022, #9 in FY2024 and #9 in FY2025; up 20 since FY2022.
10	Ueg, Inc. Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security) USAF (Department of the Air Force)	$2,163,896	2.7%	Rank history: #65 in FY2021, #5 in FY2022 and not on the FY2024–FY2025 lists; down 5 since FY2022.
11	Pacific Commercial Services, Inc. Top agencies Navy (Department of the Navy) VA (Department of Veterans Affairs)	$2,100,470	2.7%	Rank history: #6 in FY2021, #6 in FY2022, #7 in FY2024 and #16 in FY2025; down 5 since FY2022.
12	Landscape Management Systems, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$1,981,742	2.5%	Rank history: #5 in FY2021, #7 in FY2022, #5 in FY2024 and #5 in FY2025; down 5 since FY2022.
13	Seres Engineering & Services LLC Top agencies Army (Department of the Army) EPA (Environmental Protection Agency) Navy (Department of the Navy)	$1,802,855	2.3%	Rank history: #15 in FY2021, #20 in FY2022, #11 in FY2024 and #14 in FY2025; up 7 since FY2022.
14	Advant-Edge Solutions of Middle Atlantic Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) CSOSA (Court Services and Offender Supervision Agency)	$1,787,999	2.3%	Rank history: #8 in FY2021, #8 in FY2022, #6 in FY2024 and #10 in FY2025; down 6 since FY2022.
15	Ciri Development Corporation Through North Wind Site Services, LLC Top agencies Army (Department of the Army)	$1,773,445	2.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
16	Sure Drain, LLC Top agencies USDA (Department of Agriculture)	$1,444,595	1.8%	Rank history: not on the FY2021–FY2022 lists, #16 in FY2024 and not on the FY2025 list; new.
17	Haztrain Inc. Top agencies Navy (Department of the Navy)	$1,391,692	1.8%	Rank history: #11 in FY2021, #12 in FY2022, #14 in FY2024 and #13 in FY2025; down 5 since FY2022.
18	Saudi Naval Support Co. Top agencies USAF (Department of the Air Force)	$1,281,756	1.6%	Rank history: not on the FY2021 list, #14 in FY2022, #22 in FY2024 and not on the FY2025 list; down 4 since FY2022.
19	EWA Direction Inc. Top agencies Navy (Department of the Navy) VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$1,103,935	1.4%	Rank history: not on the FY2021 list, #16 in FY2022, #15 in FY2024 and #15 in FY2025; down 3 since FY2022.
20	Hepaco LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$858,247	1.1%	Rank history: not on the FY2021–FY2022 lists, #58 in FY2024 and not on the FY2025 list; new.
21	Environmental Compliance Consultants, Inc. Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs) DHS (Department of Homeland Security)	$827,083	1.0%	Rank history: #26 in FY2021, #47 in FY2022, #19 in FY2024 and #18 in FY2025; up 26 since FY2022.
22	US Ecology, Inc. 2 awardees, including US Ecology Washington Inc. Top agencies Navy (Department of the Navy)	$802,695	1.0%	Rank history: #10 in FY2021, #17 in FY2022, #21 in FY2024 and not on the FY2025 list; down 5 since FY2022.
23	Set the Standard, LLC Top agencies VA (Department of Veterans Affairs)	$793,560	1.0%	Rank history: #19 in FY2021, #18 in FY2022, not on the FY2024 list and #17 in FY2025; down 5 since FY2022.
24	CLC Services Inc. Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$789,550	1.0%	Rank history: #99 in FY2021, #88 in FY2022, #31 in FY2024 and #29 in FY2025; up 64 since FY2022.
25	Hamilton Alliance Inc. Top agencies VA (Department of Veterans Affairs)	$752,244	1.0%	Rank history: #22 in FY2021, #25 in FY2022, #17 in FY2024 and #23 in FY2025; unchanged since FY2022.
26	North State Environmental Top agencies VA (Department of Veterans Affairs) USDA (Department of Agriculture)	$644,952	0.8%	Rank history: #25 in FY2021, #21 in FY2022 and not on the FY2024–FY2025 lists; down 5 since FY2022.
27	Stericycle Inc 2 awardees Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$574,338	0.7%	Rank history: #20 in FY2021, #23 in FY2022, #37 in FY2024 and #19 in FY2025; down 4 since FY2022.
28	Grundy Government Services, LLC Top agencies Army (Department of the Army)	$555,288	0.7%	Rank history: #12 in FY2021, #13 in FY2022 and not on the FY2024–FY2025 lists; down 15 since FY2022.
29	Environmental Management Services Inc. Top agencies VA (Department of Veterans Affairs) USUHS (DOD Uniformed Services University of the Health Sciences) DOS (Department of State)	$468,088	0.6%	Rank history: #50 in FY2021, #19 in FY2022, #24 in FY2024 and #24 in FY2025; down 10 since FY2022.
30	Estrategy Consulting, LLC Top agencies VA (Department of Veterans Affairs)	$423,394	0.5%	Rank history: #24 in FY2021, #27 in FY2022, #32 in FY2024 and #34 in FY2025; down 3 since FY2022.
31	Rethmann AG & Co. KG Through Remondis Industrie Service Gmbh. Top agencies DHA (Defense Health Agency) Army (Department of the Army) USAF (Department of the Air Force)	$422,610	0.5%	Rank history: #39 in FY2021, #44 in FY2022 and not on the FY2024–FY2025 lists; up 13 since FY2022.
32	Apec Co., Ltd Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$412,400	0.5%	Rank history: #21 in FY2021, #22 in FY2022, #47 in FY2024 and #33 in FY2025; down 10 since FY2022.
33	Gulf Supplies & Commercial Services Co. Top agencies USAF (Department of the Air Force)	$405,618	0.5%	Rank history: #29 in FY2021, #28 in FY2022, #34 in FY2024 and #20 in FY2025; down 5 since FY2022.
34	Source Environmental Inc. Top agencies USDA (Department of Agriculture) Commerce (Department of Commerce) DOJ (Department of Justice)	$402,920	0.5%	Rank history: #18 in FY2021, #26 in FY2022, #20 in FY2024 and not on the FY2025 list; down 8 since FY2022.
35	Broadview Waste Solutions, Inc. Top agencies HHS (Department of Health and Human Services)	$354,400	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
36	Environmental Logistics, Inc. Top agencies VA (Department of Veterans Affairs)	$343,331	0.4%	Rank history: #16 in FY2021, #32 in FY2022, #48 in FY2024 and #37 in FY2025; down 4 since FY2022.
37	Gryphon Environmental, LLC Top agencies USAF (Department of the Air Force)	$331,370	0.4%	Rank history: #32 in FY2021, #36 in FY2022, #35 in FY2024 and not on the FY2025 list; down 1 since FY2022.
38	US Hazmat Rentals LLC Top agencies Navy (Department of the Navy)	$287,988	0.4%	Rank history: #28 in FY2021, #86 in FY2022, #33 in FY2024 and #36 in FY2025; up 48 since FY2022.
39	Tradebe Treatment and Recycling LLC 2 awardees, including Tradebe Environmental Services, LLC Top agencies Army (Department of the Army) VA (Department of Veterans Affairs)	$277,451	0.4%	Rank history: #64 in FY2021, #33 in FY2022 and not on the FY2024–FY2025 lists; down 6 since FY2022.
40	Environmental and Energy Innovations, LLC Top agencies VA (Department of Veterans Affairs)	$276,211	0.4%	Rank history: #36 in FY2021, #39 in FY2022, #59 in FY2024 and not on the FY2025 list; down 1 since FY2022.
41	Daniels Corporation Group Holdings PTY Ltd Through Daniels Sharpsmart, Inc. Top agencies VA (Department of Veterans Affairs)	$271,239	0.3%	Rank history: not on the FY2021 list, #35 in FY2022 and not on the FY2024–FY2025 lists; down 6 since FY2022.
42	Trilogy Medwaste Southeast LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$252,185	0.3%	Rank history: #33 in FY2021, #31 in FY2022 and not on the FY2024–FY2025 lists; down 11 since FY2022.
43	Consolidated Waste Services LLC Top agencies VA (Department of Veterans Affairs)	$250,905	0.3%	Rank history: not on the FY2021–FY2022 lists, #41 in FY2024 and #50 in FY2025; new.
44	Sunrise Environmental LLC Top agencies DOJ (Department of Justice)	$240,162	0.3%	Rank history: not on the FY2021 list, #60 in FY2022 and not on the FY2024–FY2025 lists; up 16 since FY2022.
45	CYS Enterprises LLC Top agencies USAF (Department of the Air Force)	$239,241	0.3%	Rank history: #37 in FY2021, #40 in FY2022 and not on the FY2024–FY2025 lists; down 5 since FY2022.
46	Tridant Solutions, Inc. Top agencies DHS (Department of Homeland Security)	$233,541	0.3%	Rank history: #31 in FY2021, #45 in FY2022, #40 in FY2024 and #40 in FY2025; down 1 since FY2022.
47	Reliable Pharmaceutical Returns, LLC Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice)	$233,433	0.3%	Rank history: #83 in FY2021, #34 in FY2022, #54 in FY2024 and not on the FY2025 list; down 13 since FY2022.
48	Inmar Clearing Inc. Through Inmar RX Solutions Inc. Top agencies VA (Department of Veterans Affairs)	$228,200	0.3%	Rank history: not on the FY2021–FY2022 lists, #61 in FY2024 and not on the FY2025 list; new.
49	Windjammer Environmental LLC Top agencies DHS (Department of Homeland Security)	$227,076	0.3%	Rank history: not on the FY2021 list, #42 in FY2022, #44 in FY2024 and #42 in FY2025; down 7 since FY2022.
50	D'S Ventures, LLC Top agencies VA (Department of Veterans Affairs)	$209,000	0.3%	Rank history: not on the FY2021 list, #58 in FY2022, #38 in FY2024 and #49 in FY2025; up 8 since FY2022.
51	Enviremedial Services, Inc. Top agencies USAF (Department of the Air Force)	$204,399	0.3%	Rank history: #51 in FY2021, #43 in FY2022, #50 in FY2024 and #48 in FY2025; down 8 since FY2022.
52	Steelsmith, LLC Top agencies Treasury (Department of the Treasury)	$190,485	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
53	Milspec Logistics LLC Top agencies VA (Department of Veterans Affairs) DOI (Department of the Interior)	$184,045	0.2%	Rank history: not on the FY2021–FY2022 lists, #63 in FY2024 and not on the FY2025 list; new.
54	Republic Services Inc. 3 awardees, including ACV Environmental Services Inc. and EQ Northeast, Inc. Top agencies DOJ (Department of Justice) Treasury (Department of the Treasury) Commerce (Department of Commerce)	$172,354	0.2%	Rank history: not on the FY2021–FY2022 lists, #1 in FY2024 and #1 in FY2025; new.
55	Southwest Hazard Control Inc. Top agencies VA (Department of Veterans Affairs)	$167,036	0.2%	Rank history: #55 in FY2021, #53 in FY2022, #72 in FY2024 and #95 in FY2025; down 2 since FY2022.
56	Credere Associates, LLC Top agencies Army (Department of the Army)	$141,557	0.2%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2024 and not on the FY2025 list; new.
57	Gruene Shredding LLC Top agencies VA (Department of Veterans Affairs)	$140,333	0.2%	Rank history: #23 in FY2021, #24 in FY2022 and not on the FY2024–FY2025 lists; down 33 since FY2022.
58	Sage LLC Top agencies VA (Department of Veterans Affairs)	$138,785	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
59	Precision Industrial Maintenance, LLC Top agencies Army (Department of the Army)	$133,500	0.2%	Rank history: not on the FY2021 list, #67 in FY2022, not on the FY2024 list and #47 in FY2025; up 8 since FY2022.
60	ELR Consultants, LLC Top agencies VA (Department of Veterans Affairs)	$132,357	0.2%	Rank history: #52 in FY2021, #37 in FY2022, #52 in FY2024 and #98 in FY2025; down 23 since FY2022.
61	Pollution Control Inc Top agencies Commerce (Department of Commerce)	$131,620	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
62	Specialized Waste Solutions, Inc. Top agencies USDA (Department of Agriculture)	$129,686	0.2%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2024 and #53 in FY2025; up 58 since FY2022.
63	Black Gold Industries Top agencies NASA (National Aeronautics and Space Administration) DOI (Department of the Interior)	$129,638	0.2%	Rank history: #75 in FY2021, #50 in FY2022, #66 in FY2024 and not on the FY2025 list; down 13 since FY2022.
64	Forensiclean LLC Top agencies DOI (Department of the Interior)	$127,400	0.2%	Rank history: not on the FY2021 list, #56 in FY2022, #97 in FY2024 and not on the FY2025 list; down 8 since FY2022.
65	GEO & GEO S.R.L. Top agencies Army (Department of the Army)	$124,206	0.2%	Rank history: #43 in FY2021, #41 in FY2022, #78 in FY2024 and #74 in FY2025; down 24 since FY2022.
66	Hull's Environmental Services, Inc. Top agencies DOJ (Department of Justice)	$116,807	0.1%	Rank history: #97 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 46 since FY2022.
67	Veolia Water North America-West LLC Through Veolia Es Technical Solutions LLC Top agencies DOJ (Department of Justice) Treasury (Department of the Treasury)	$113,472	0.1%	Rank history: not on the FY2021 list, #82 in FY2022, #94 in FY2024 and not on the FY2025 list; up 15 since FY2022.
68	B.s. Environmental, Inc. Top agencies USAF (Department of the Air Force)	$104,390	0.1%	Rank history: #61 in FY2021, not on the FY2022 list, #87 in FY2024 and not on the FY2025 list; up 100 since FY2022.
69	Heritage Environmental Services Inc. Through Arcwood Environmental, LLC Top agencies DOJ (Department of Justice) Commerce (Department of Commerce)	$103,437	0.1%	Rank history: #42 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
70	Matrix Waste Systems, Inc. Top agencies HHS (Department of Health and Human Services)	$100,000	0.1%	Rank history: #85 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
71	Brown Point Facility Management Solutions, LLC Top agencies DHS (Department of Homeland Security)	$99,922	0.1%	Rank history: not on the FY2021 list, #80 in FY2022 and not on the FY2024–FY2025 lists; up 9 since FY2022.
72	Sued-Muell GMBH & Co. KG Fuer Abfalltransporte UND Sonderabfallbeseitigung Top agencies Army (Department of the Army)	$93,807	0.1%	Rank history: #60 in FY2021, #64 in FY2022 and not on the FY2024–FY2025 lists; down 8 since FY2022.
73	GS Environmental, Inc. Top agencies DOI (Department of the Interior)	$92,000	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #80 in FY2025; new.
74	United Returns, Inc. Top agencies VA (Department of Veterans Affairs)	$90,600	0.1%	Rank history: not on the FY2021 list, #61 in FY2022, #75 in FY2024 and #63 in FY2025; down 13 since FY2022.
75	Remondis Industrie Service GMBH. 2 awardees, including Secanim Suedwest GMBH Top agencies DECA (Defense Commissary Agency) DHA (Defense Health Agency)	$88,537	0.1%	Rank history: not on the FY2021–FY2022 lists, #27 in FY2024 and #25 in FY2025; new.
76	Reg Products, LLC Top agencies VA (Department of Veterans Affairs)	$83,113	0.1%	Rank history: #17 in FY2021, #65 in FY2022, #65 in FY2024 and not on the FY2025 list; down 11 since FY2022.
77	M.v. Maschinen-Vertriebsgesellschaft MBH Top agencies USAF (Department of the Air Force)	$80,706	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
78	Computer Discounters Inc. Through Turtle Wings Inc. Top agencies SSA (Social Security Administration)	$79,999	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
79	Action Cleaning Corporation Top agencies Navy (Department of the Navy)	$79,116	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 87 since FY2022.
80	RON Smith Environmental, Inc. Top agencies VA (Department of Veterans Affairs)	$78,000	0.1%	Rank history: #67 in FY2021, #74 in FY2022 and not on the FY2024–FY2025 lists; down 6 since FY2022.
81	Transchem Environmental LLC Top agencies VA (Department of Veterans Affairs) DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$76,639	0.1%	Rank history: not on the FY2021 list, #99 in FY2022, #89 in FY2024 and #76 in FY2025; up 18 since FY2022.
82	N.w.f.f., Inc. Top agencies DOJ (Department of Justice) USDA (Department of Agriculture)	$70,497	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #39 in FY2025; new.
83	Best Pots, Inc. Top agencies DOI (Department of the Interior)	$70,482	0.1%	Rank history: #53 in FY2021, #71 in FY2022 and not on the FY2024–FY2025 lists; down 12 since FY2022.
84	Schaal & Mueller GMBH & Co. KG Top agencies Army (Department of the Army)	$69,103	0.1%	Rank history: not on the FY2021–FY2022 lists, #100 in FY2024 and not on the FY2025 list; new.
85	Fiber Business Solutions Group Inc. Top agencies DOI (Department of the Interior)	$67,380	0.1%	Rank history: #74 in FY2021, #78 in FY2022, #83 in FY2024 and not on the FY2025 list; down 7 since FY2022.
86	Environmental Restoration LLC Top agencies DOJ (Department of Justice)	$67,360	0.1%	Rank history: #27 in FY2021, #46 in FY2022 and not on the FY2024–FY2025 lists; down 40 since FY2022.
87	Healthcare Medical Waste Services, LLC Top agencies USAF (Department of the Air Force)	$61,020	0.1%	Rank history: #82 in FY2021, #79 in FY2022, #95 in FY2024 and not on the FY2025 list; down 8 since FY2022.
88	Williams Sewer & Drain LLC Top agencies Army (Department of the Army)	$57,915	0.1%	Rank history: #84 in FY2021, #83 in FY2022, #90 in FY2024 and #86 in FY2025; down 5 since FY2022.
89	American Integrated Services, Inc. Top agencies DOJ (Department of Justice)	$56,495	0.1%	Rank history: #92 in FY2021, #93 in FY2022, not on the FY2024 list and #64 in FY2025; up 4 since FY2022.
90	NAC Philotechnics, Ltd. Top agencies HHS (Department of Health and Human Services)	$55,000	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 49 since FY2022.
91	Ambk, Inc. Top agencies Navy (Department of the Navy)	$53,544	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 40 since FY2022.
92	Areaka Trading & Logistics Company Top agencies USAF (Department of the Air Force)	$51,600	0.1%	Rank history: #78 in FY2021, #62 in FY2022 and not on the FY2024–FY2025 lists; down 30 since FY2022.
93	Neie, Inc. Top agencies HHS (Department of Health and Human Services)	$48,966	0.1%	Rank history: #95 in FY2021, #70 in FY2022, #76 in FY2024 and #94 in FY2025; down 23 since FY2022.
94	J & J Honey Dipping & Services Inc. Top agencies USDA (Department of Agriculture)	$48,300	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 23 since FY2022.
95	C4 Livestock and Products, LLC Top agencies HHS (Department of Health and Human Services)	$48,010	0.1%	Rank history: #90 in FY2021, #91 in FY2022, #62 in FY2024 and #59 in FY2025; down 4 since FY2022.
96	Environmental Waste Specialists Inc Top agencies Navy (Department of the Navy)	$46,840	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
97	American Wholesale Solutions LLC Top agencies HHS (Department of Health and Human Services)	$41,260	0.1%	Rank history: not on the FY2021–FY2022 lists, #43 in FY2024 and #43 in FY2025; new.
98	Mirachem LLC Through Crystal Clean, LLC Top agencies Navy (Department of the Navy)	$40,098	0.1%	Rank history: #41 in FY2021, #57 in FY2022 and not on the FY2024–FY2025 lists; down 41 since FY2022.
99	Lotususa, Inc. Top agencies HHS (Department of Health and Human Services)	$39,003	<0.1%	Rank history: not on the FY2021 list, #96 in FY2022 and not on the FY2024–FY2025 lists; down 3 since FY2022.
100	Waste Connections US Holdings Inc. Through Waste Connections Bayou, Inc. Top agencies VA (Department of Veterans Affairs)	$38,926	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.

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100 of 200 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 $78.8 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 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 562112 contractors in FY2023?

1. Triumvirate Environmental, LLC ($6.72M), 2. Clean Venture Inc. ($5.4M), 3. Neie Medical Waste Services, LLC ($4.93M), 4. Earth Smart Environmental Solutions LLC ($4.57M), 5. Perikin Enterprises LLC ($3.3M), 6. Mellor Engineering Inc. ($2.49M), 7. Specpro Sustainment and Environmental, LLC ($2.29M), 8. Mabbett & Associates, Inc. ($2.28M), 9. Potomac Environmental Inc. ($2.24M), 10. Ueg, Inc. ($2.16M).

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