Top 100 Contractors in NAICS 562: Waste Management and Remediation Services, Jul 2025–Jun 2026

Name: Top 100 Contractors in NAICS 562: Waste Management and Remediation Services, 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 51% of NAICS 562 contract dollars from July 2025 through June 2026

Contract obligations: $8,496,253,732 Net of deobligations, by contracts coded NAICS 562 or a code under it
Contractors: 2,610 Parent companies with an obligation
Largest contractor: Amentum Holdings, Inc. $2.13 billion, 21.6% 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	Amentum Holdings, Inc. 11 awardees, including United Cleanup Oak Ridge LLC, Idaho Environmental Coalition LLC and Central Plateau Cleanup Company, LLC Top agencies DOE (Department of Energy) Army (Department of the Army) DOT (Department of Transportation)	$2,131,436,272	21.6%	Rank history: not on the FY2021–FY2023 lists, #12 in FY2024 and #3 in FY2025; up 2 since Jul 2024–Jun 2025.
2	Savannah River Mission Completion, LLC Top agencies DOE (Department of Energy)	$1,168,123,719	11.8%	Rank history: not on the FY2021 list, #3 in FY2022, #3 in FY2023, #2 in FY2024 and #4 in FY2025; up 2 since Jul 2024–Jun 2025.
3	Hanford Tank Waste Operations & Closure, LLC Top agencies DOE (Department of Energy)	$841,002,959	8.5%	Rank history: not on the FY2021–FY2024 lists and #5 in FY2025; up 2 since Jul 2024–Jun 2025.
4	Ashbritt Inc. Top agencies Army (Department of the Army)	$158,046,577	1.6%	Rank history: not on the FY2021–FY2024 lists and #2 in FY2025; down 2 since Jul 2024–Jun 2025.
5	Hydrogeologic, Inc. Top agencies Army (Department of the Army) EPA (Environmental Protection Agency) Navy (Department of the Navy)	$140,965,215	1.4%	Rank history: #8 in FY2021, #8 in FY2022, #8 in FY2023, #13 in FY2024 and #15 in FY2025; up 9 since Jul 2024–Jun 2025.
6	Environmental Restoration LLC Top agencies EPA (Environmental Protection Agency) DOJ (Department of Justice) Army (Department of the Army)	$127,259,158	1.3%	Rank history: #11 in FY2021, #7 in FY2022, #12 in FY2023, #25 in FY2024 and #18 in FY2025; up 24 since Jul 2024–Jun 2025.
7	JBW Group LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$121,187,836	1.2%	Rank history: not on the FY2021–FY2024 lists and #11 in FY2025; up 15 since Jul 2024–Jun 2025.
8	Bechtel Parsons Blue Grass, A Joint Venture Top agencies Army (Department of the Army)	$109,599,732	1.1%	Rank history: not on the FY2021–FY2023 lists, #9 in FY2024 and #7 in FY2025; up 1 since Jul 2024–Jun 2025.
9	Hanford Laboratory Management and Integration LLC Top agencies DOE (Department of Energy)	$106,922,566	1.1%	Rank history: #24 in FY2021, #14 in FY2022, #16 in FY2023, #14 in FY2024 and #20 in FY2025; up 7 since Jul 2024–Jun 2025.
10	West Valley Cleanup Alliance, LLC Top agencies DOE (Department of Energy)	$104,567,286	1.1%	Rank history: not on the FY2021–FY2024 lists and #32 in FY2025; up 141 since Jul 2024–Jun 2025.
11	EA Engineering Science and Technology Inc. PBC Top agencies EPA (Environmental Protection Agency) Army (Department of the Army) Navy (Department of the Navy)	$103,738,555	1.1%	Rank history: #9 in FY2021, #6 in FY2022, #7 in FY2023, #11 in FY2024 and #17 in FY2025; up 1 since Jul 2024–Jun 2025.
12	Guidehouse Inc. 2 awardees, including Aptim Federal Services, LLC Top agencies DOE (Department of Energy) Navy (Department of the Navy) Army (Department of the Army)	$101,907,020	1.0%	Rank history: not on the FY2021–FY2023 lists, #20 in FY2024 and #14 in FY2025; up 7 since Jul 2024–Jun 2025.
13	Tetra Tech, Inc. 9 awardees, including Tetra TECH EC, Inc. Top agencies DOS (Department of State) Army (Department of the Army) EPA (Environmental Protection Agency)	$95,206,173	1.0%	Rank history: #14 in FY2021, #9 in FY2022, #9 in FY2023, #23 in FY2024 and #19 in FY2025; up 11 since Jul 2024–Jun 2025.
14	North Wind Portage, Inc. Top agencies DOE (Department of Energy) Army (Department of the Army)	$92,259,460	0.9%	Rank history: not on the FY2021 list, #25 in FY2022, not on the FY2023 list, #22 in FY2024 and #21 in FY2025; up 3 since Jul 2024–Jun 2025.
15	Sevenson Environmental Services, Inc. Top agencies Army (Department of the Army) EPA (Environmental Protection Agency) Navy (Department of the Navy)	$91,940,821	0.9%	Rank history: #17 in FY2021, #11 in FY2022, #14 in FY2023, #7 in FY2024 and #12 in FY2025; down 8 since Jul 2024–Jun 2025.
16	Navarro Research and Engineering, Inc. Top agencies DOE (Department of Energy) Army (Department of the Army)	$86,864,638	0.9%	Rank history: #12 in FY2021, #18 in FY2022, #22 in FY2023, #24 in FY2024 and #24 in FY2025; up 11 since Jul 2024–Jun 2025.
17	Arctic Slope Regional Corporation 3 awardees, including RSI Entech, LLC and Asrc Consulting & Environmental Services, LLC Top agencies DOE (Department of Energy) USAF (Department of the Air Force) DOI (Department of the Interior)	$82,939,171	0.8%	Rank history: #27 in FY2021, #46 in FY2022, #17 in FY2023, #58 in FY2024 and #9 in FY2025; new, not ranked in Jul 2024–Jun 2025.
18	Kemron Environmental Services Inc. 3 awardees, including Kemron / Arrowhead JV, LLC Top agencies EPA (Environmental Protection Agency) Army (Department of the Army)	$82,792,349	0.8%	Rank history: not on the FY2021–FY2023 lists, #16 in FY2024 and #37 in FY2025; up 8 since Jul 2024–Jun 2025.
19	Tmsab LLC Top agencies Army (Department of the Army)	$80,148,463	0.8%	Rank history: not on the FY2021–FY2024 lists and #13 in FY2025; up 4 since Jul 2024–Jun 2025.
20	Energy Technology Alliance LLC Top agencies DOE (Department of Energy)	$78,984,913	0.8%	Rank history: not on the FY2021–FY2023 lists, #15 in FY2024 and #22 in FY2025; unchanged since Jul 2024–Jun 2025.
21	Fluor Corporation Through Fluor-Bwxt Portsmouth LLC Top agencies DOE (Department of Energy)	$71,702,610	0.7%	Rank history: #2 in FY2021, #4 in FY2022, #5 in FY2023, #6 in FY2024 and #6 in FY2025; down 15 since Jul 2024–Jun 2025.
22	Bechtel Corp Through Bechtel National, Inc. Top agencies Army (Department of the Army)	$68,453,847	0.7%	Rank history: #3 in FY2021, #2 in FY2022, #2 in FY2023, #4 in FY2024 and #10 in FY2025; down 11 since Jul 2024–Jun 2025.
23	Tehama Technical Services, LLC Top agencies EPA (Environmental Protection Agency) Army (Department of the Army) DOI (Department of the Interior)	$52,884,519	0.5%	Rank history: not on the FY2021–FY2024 lists and #84 in FY2025; up 109 since Jul 2024–Jun 2025.
24	Enviro-Fix Solutions LLC Top agencies Army (Department of the Army)	$49,701,228	0.5%	Rank history: not on the FY2021–FY2022 lists, #86 in FY2023, #71 in FY2024 and #63 in FY2025; up 220 since Jul 2024–Jun 2025.
25	Oneida Environmental, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$48,527,470	0.5%	Rank history: not on the FY2021–FY2024 lists and #29 in FY2025; up 127 since Jul 2024–Jun 2025.
26	Inmar RX Solutions Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$40,929,098	0.4%	Rank history: not on the FY2021–FY2024 lists and #31 in FY2025; new, not ranked in Jul 2024–Jun 2025.
27	Bristol Bay Native Corporation 2 awardees, including Bristol Environmental Solutions LLC and Aerostar SES LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$40,103,952	0.4%	Rank history: not on the FY2021–FY2022 lists, #54 in FY2023, not on the FY2024 list and #34 in FY2025; up 118 since Jul 2024–Jun 2025.
28	Republic Services Inc. 46 awardees, including Environmental, Safety & Health Consulting Services, Inc., ACV Environmental Services Inc. and US Ecology Washington Inc. Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services) Army (Department of the Army)	$37,178,407	0.4%	Rank history: not on the FY2021–FY2023 lists, #48 in FY2024 and #28 in FY2025; up 6 since Jul 2024–Jun 2025.
29	Paragon Professional Services LLC 2 awardees Top agencies EPA (Environmental Protection Agency) DOE (Department of Energy) Army (Department of the Army)	$37,040,750	0.4%	Rank history: #52 in FY2021, #74 in FY2022, #34 in FY2023, #34 in FY2024 and #26 in FY2025; up 3 since Jul 2024–Jun 2025.
30	Cape Environmental Management Inc. Top agencies EPA (Environmental Protection Agency) USAF (Department of the Air Force) Army (Department of the Army)	$36,429,098	0.4%	Rank history: #13 in FY2021, #15 in FY2022, #40 in FY2023, #51 in FY2024 and #38 in FY2025; up 15 since Jul 2024–Jun 2025.
31	Environmental Chemical Corporation Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$35,468,891	0.4%	Rank history: #23 in FY2021, #31 in FY2022, #24 in FY2023, #5 in FY2024 and #33 in FY2025; down 6 since Jul 2024–Jun 2025.
32	Eastern Shawnee - Bay West JV, LLC Top agencies Army (Department of the Army)	$34,283,868	0.3%	Rank history: not on the FY2021–FY2024 lists and #66 in FY2025; new, not ranked in Jul 2024–Jun 2025.
33	AECOM Technical Services, Inc. Top agencies EPA (Environmental Protection Agency) Army (Department of the Army) DLA (Defense Logistics Agency)	$33,908,743	0.3%	Rank history: #81 in FY2021, not on the FY2022–FY2023 lists, #17 in FY2024 and #25 in FY2025; down 15 since Jul 2024–Jun 2025.
34	Ch2M Hill, Inc. Top agencies EPA (Environmental Protection Agency) Army (Department of the Army)	$31,309,493	0.3%	Rank history: not on the FY2021 list, #29 in FY2022, not on the FY2023 list, #30 in FY2024 and #35 in FY2025; up 7 since Jul 2024–Jun 2025.
35	Couvillion Group LLC Top agencies DHS (Department of Homeland Security)	$25,991,966	0.3%	Rank history: #58 in FY2021, #39 in FY2022, #44 in FY2023, #61 in FY2024 and #43 in FY2025; up 11 since Jul 2024–Jun 2025.
36	Gsia-Parsons JV LLC Top agencies Army (Department of the Army)	$25,463,633	0.3%	Rank history: not on the FY2021–FY2024 lists and #52 in FY2025; new, not ranked in Jul 2024–Jun 2025.
37	Clean Harbors Inc. 2 awardees, including Clean Harbors Environmental Services Inc. Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security) Navy (Department of the Navy)	$25,099,830	0.3%	Rank history: not on the FY2021–FY2023 lists, #87 in FY2024 and #45 in FY2025; up 12 since Jul 2024–Jun 2025.
38	CDM Federal Programs Corporation Top agencies EPA (Environmental Protection Agency) Army (Department of the Army)	$24,985,099	0.3%	Rank history: not on the FY2021–FY2023 lists, #40 in FY2024 and #44 in FY2025; up 1 since Jul 2024–Jun 2025.
39	Kfs, LLC Top agencies Army (Department of the Army)	$24,378,890	0.2%	Rank history: not on the FY2021–FY2025 lists; up 283 since Jul 2024–Jun 2025.
40	Brice Engineering, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$23,900,887	0.2%	Rank history: #42 in FY2021, #24 in FY2022, #18 in FY2023, #47 in FY2024 and #41 in FY2025; unchanged since Jul 2024–Jun 2025.
41	Weston Solutions Holdings Inc Through Weston Solutions Inc. Top agencies Army (Department of the Army)	$23,205,299	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
42	Hgl-Aptim JV LLC Top agencies Army (Department of the Army)	$23,165,403	0.2%	Rank history: #39 in FY2021, #33 in FY2022, #52 in FY2023, #35 in FY2024 and #47 in FY2025; up 9 since Jul 2024–Jun 2025.
43	USA Environmental, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$22,880,098	0.2%	Rank history: #50 in FY2021, #57 in FY2022, #55 in FY2023, #68 in FY2024 and #54 in FY2025; up 17 since Jul 2024–Jun 2025.
44	Hgl-Aptim Technologies JV LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$22,482,814	0.2%	Rank history: not on the FY2021–FY2024 lists and #27 in FY2025; up 4 since Jul 2024–Jun 2025.
45	Aleut Environmental Remediation, LLC Top agencies Army (Department of the Army)	$22,408,328	0.2%	Rank history: not on the FY2021–FY2024 lists and #51 in FY2025; up 393 since Jul 2024–Jun 2025.
46	Parsons Corporation Through Parsons Government Services Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) MDA (DOD Missile Defense Agency)	$21,644,446	0.2%	Rank history: #56 in FY2021, #23 in FY2022, #48 in FY2023, #67 in FY2024 and #40 in FY2025; up 11 since Jul 2024–Jun 2025.
47	Sustainment & Restoration Services, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$21,381,946	0.2%	Rank history: not on the FY2021–FY2023 lists, #53 in FY2024 and #42 in FY2025; up 6 since Jul 2024–Jun 2025.
48	Advanced Technologies and Laboratories (Atl) International, Inc. Top agencies HHS (Department of Health and Human Services)	$20,501,471	0.2%	Rank history: #80 in FY2021, not on the FY2022–FY2023 lists, #74 in FY2024 and not on the FY2025 list; up 29 since Jul 2024–Jun 2025.
49	The Cherokee Nation Through Cherokee Strategic Solutions, L.L.C. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$19,998,468	0.2%	Rank history: not on the FY2021–FY2024 lists and #59 in FY2025; up 40 since Jul 2024–Jun 2025.
50	Dawson Solutions LLC Top agencies DHS (Department of Homeland Security) Army (Department of the Army) USDA (Department of Agriculture)	$19,682,672	0.2%	Rank history: not on the FY2021–FY2022 lists, #83 in FY2023, #21 in FY2024 and #65 in FY2025; unchanged since Jul 2024–Jun 2025.
51	Bay West LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) GSA (General Services Administration)	$18,964,057	0.2%	Rank history: #84 in FY2021, #83 in FY2022, #50 in FY2023, #60 in FY2024 and #48 in FY2025; up 8 since Jul 2024–Jun 2025.
52	Hamilton Alliance Inc. Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy) Army (Department of the Army)	$18,617,941	0.2%	Rank history: #57 in FY2021, #61 in FY2022, #63 in FY2023, #62 in FY2024 and #57 in FY2025; up 10 since Jul 2024–Jun 2025.
53	Environmental Rail Solutions Inc. Top agencies Army (Department of the Army)	$18,382,861	0.2%	Rank history: not on the FY2021 list, #56 in FY2022, #68 in FY2023, #63 in FY2024 and #81 in FY2025; up 75 since Jul 2024–Jun 2025.
54	Koman Government Solutions LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) DHS (Department of Homeland Security)	$17,522,104	0.2%	Rank history: not on the FY2021–FY2023 lists, #73 in FY2024 and #69 in FY2025; up 14 since Jul 2024–Jun 2025.
55	Jacobs Government Services Company 5 awardees, including Jacobs Engineering Group Inc., Jacobs Usae Joint Venture and Ch2M Hill Constructors, Inc. Top agencies EPA (Environmental Protection Agency) Army (Department of the Army) DLA (Defense Logistics Agency)	$17,401,590	0.2%	Rank history: not on the FY2021–FY2022 lists, #35 in FY2023, #28 in FY2024 and #39 in FY2025; down 22 since Jul 2024–Jun 2025.
56	Ahtna Target JV, LLC Top agencies NASA (National Aeronautics and Space Administration)	$15,129,755	0.2%	Rank history: not on the FY2021–FY2024 lists and #64 in FY2025; new, not ranked in Jul 2024–Jun 2025.
57	Waste Management of New Jersey Inc. 86 awardees, including USA Waste of California, Inc., Waste Management Inc of Florida and Waste Management Collection and Recycling Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) VA (Department of Veterans Affairs)	$14,507,595	0.1%	Rank history: not on the FY2021–FY2024 lists and #75 in FY2025; up 24 since Jul 2024–Jun 2025.
58	Perry Management Corp of South Dakota, L.l.c Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$14,498,755	0.1%	Rank history: #95 in FY2021, #98 in FY2022, not on the FY2023 list, #75 in FY2024 and #70 in FY2025; up 13 since Jul 2024–Jun 2025.
59	Aptim Hdr, LLC Top agencies EPA (Environmental Protection Agency)	$14,310,240	0.1%	Rank history: not on the FY2021–FY2025 lists; up 418 since Jul 2024–Jun 2025.
60	The Source Group, Inc. Top agencies DLA (Defense Logistics Agency)	$14,088,269	0.1%	Rank history: #20 in FY2021, #45 in FY2022, not on the FY2023–FY2024 lists and #78 in FY2025; up 63 since Jul 2024–Jun 2025.
61	C M C, Inc. Top agencies EPA (Environmental Protection Agency)	$14,024,236	0.1%	Rank history: #66 in FY2021, #32 in FY2022, #29 in FY2023, #42 in FY2024 and not on the FY2025 list; unchanged since Jul 2024–Jun 2025.
62	ECC Constructors LLC Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$13,535,549	0.1%	Rank history: not on the FY2021–FY2023 lists, #32 in FY2024 and #1 in FY2025; down 61 since Jul 2024–Jun 2025.
63	Oneida Total Integrated Enterprises LLC Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency) Army (Department of the Army)	$13,425,141	0.1%	Rank history: not on the FY2021–FY2023 lists, #83 in FY2024 and #77 in FY2025; up 32 since Jul 2024–Jun 2025.
64	Olgoonik Corporation Through FPM Remediations, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) DHS (Department of Homeland Security)	$13,405,626	0.1%	Rank history: #37 in FY2021, not on the FY2022 list, #61 in FY2023, #56 in FY2024 and #49 in FY2025; down 20 since Jul 2024–Jun 2025.
65	Arrowhead Contracting, LLC Top agencies EPA (Environmental Protection Agency)	$13,197,977	0.1%	Rank history: not on the FY2021–FY2022 lists, #43 in FY2023, not on the FY2024 list and #60 in FY2025; up 37 since Jul 2024–Jun 2025.
66	Lata-Cti Environmental Services LLC Top agencies USAF (Department of the Air Force)	$13,128,939	0.1%	Rank history: not on the FY2021–FY2025 lists; up 59 since Jul 2024–Jun 2025.
67	Arcadis U.s., Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$12,637,944	0.1%	Rank history: not on the FY2021–FY2024 lists and #68 in FY2025; up 195 since Jul 2024–Jun 2025.
68	Harold Lemay Enterprises Incorporated 43 awardees, including Waste Connections of Alaska, Inc., Waste Connections of Florida, Inc. and Waste Connections of Arkansas, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) DOJ (Department of Justice)	$12,485,820	0.1%	Rank history: not on the FY2021–FY2025 lists; up 156 since Jul 2024–Jun 2025.
69	Catawba Teapec LLC Top agencies DOE (Department of Energy)	$12,434,977	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
70	Fpm-Aecom JV1 2 awardees, including Fpm-Aecom JV2 Top agencies Army (Department of the Army) DOE (Department of Energy) USAF (Department of the Air Force)	$12,378,743	0.1%	Rank history: not on the FY2021 list, #71 in FY2022, #27 in FY2023, #33 in FY2024 and #72 in FY2025; down 35 since Jul 2024–Jun 2025.
71	Kurashiki, Co.,Ltd. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$12,335,171	0.1%	Rank history: not on the FY2021–FY2024 lists and #88 in FY2025; up 45 since Jul 2024–Jun 2025.
72	Neie Medical Waste Services, LLC Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force) USDA (Department of Agriculture)	$12,211,094	0.1%	Rank history: #75 in FY2021, #82 in FY2022, not on the FY2023 list, #99 in FY2024 and #87 in FY2025; up 28 since Jul 2024–Jun 2025.
73	Seaon Environmental LLC Top agencies Navy (Department of the Navy)	$11,980,607	0.1%	Rank history: not on the FY2021 list, #91 in FY2022, #91 in FY2023, #84 in FY2024 and #67 in FY2025; down 8 since Jul 2024–Jun 2025.
74	J.f. Brennan Company, Inc. Top agencies EPA (Environmental Protection Agency) Army (Department of the Army)	$11,975,029	0.1%	Rank history: not on the FY2021 list, #13 in FY2022, not on the FY2023 list, #46 in FY2024 and not on the FY2025 list; up 152 since Jul 2024–Jun 2025.
75	Guahan Waste Control, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$11,563,828	0.1%	Rank history: not on the FY2021 list, #76 in FY2022, #66 in FY2023, #82 in FY2024 and #91 in FY2025; up 18 since Jul 2024–Jun 2025.
76	JFL-WCS Partners LLC Through Waste Control Specialists LLC Top agencies DOE (Department of Energy) Army (Department of the Army) EPA (Environmental Protection Agency)	$11,290,270	0.1%	Rank history: not on the FY2021–FY2023 lists, #76 in FY2024 and not on the FY2025 list; down 2 since Jul 2024–Jun 2025.
77	Yamaki Co., Ltd. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$11,117,572	0.1%	Rank history: #59 in FY2021, #64 in FY2022, #84 in FY2023, #98 in FY2024 and #83 in FY2025; up 14 since Jul 2024–Jun 2025.
78	C & C Environmental Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) DOI (Department of the Interior)	$11,080,992	0.1%	Rank history: #85 in FY2021, #100 in FY2022, #96 in FY2023, #91 in FY2024 and #71 in FY2025; down 9 since Jul 2024–Jun 2025.
79	Cape-Weston JV3 LLC Top agencies Navy (Department of the Navy)	$10,902,042	0.1%	Rank history: not on the FY2021–FY2022 lists, #67 in FY2023, #36 in FY2024 and #55 in FY2025; down 12 since Jul 2024–Jun 2025.
80	Triumvirate Environmental, LLC Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy) Commerce (Department of Commerce)	$10,790,891	0.1%	Rank history: not on the FY2021–FY2024 lists and #94 in FY2025; up 21 since Jul 2024–Jun 2025.
81	Veolia Es Technical Solutions LLC Top agencies Army (Department of the Army) EPA (Environmental Protection Agency) DOJ (Department of Justice)	$10,758,302	0.1%	Rank history: not on the FY2021–FY2024 lists and #79 in FY2025; up 56 since Jul 2024–Jun 2025.
82	Leidos Holdings, Inc. Through Leidos, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$10,614,833	0.1%	Rank history: #61 in FY2021, #62 in FY2022, #74 in FY2023, not on the FY2024 list and #56 in FY2025; down 19 since Jul 2024–Jun 2025.
83	S&K Mission Support, LLC Top agencies DOE (Department of Energy)	$10,375,427	0.1%	Rank history: not on the FY2021–FY2024 lists and #80 in FY2025; down 1 since Jul 2024–Jun 2025.
84	Earth Smart Environmental Solutions LLC Top agencies VA (Department of Veterans Affairs) USDA (Department of Agriculture)	$10,003,448	0.1%	Rank history: not on the FY2021–FY2023 lists, #93 in FY2024 and not on the FY2025 list; up 28 since Jul 2024–Jun 2025.
85	Ahtna Global LLC Top agencies Army (Department of the Army)	$9,969,175	0.1%	Rank history: not on the FY2021–FY2024 lists and #50 in FY2025; down 21 since Jul 2024–Jun 2025.
86	Bering Straits Construction Solutions, LLC Top agencies Army (Department of the Army)	$9,723,872	0.1%	Rank history: not on the FY2021–FY2024 lists and #36 in FY2025; new, not ranked in Jul 2024–Jun 2025.
87	Willow Environmental Inc. Top agencies DLA (Defense Logistics Agency)	$9,686,805	0.1%	Rank history: not on the FY2021–FY2024 lists and #89 in FY2025; up 22 since Jul 2024–Jun 2025.
88	Tradebe Environmental Services, LLC Top agencies DLA (Defense Logistics Agency) EPA (Environmental Protection Agency) Army (Department of the Army)	$9,318,914	0.1%	Rank history: not on the FY2021–FY2025 lists; up 32 since Jul 2024–Jun 2025.
89	TRI-State Government Services Inc Top agencies DLA (Defense Logistics Agency)	$9,187,410	0.1%	Rank history: not on the FY2021–FY2025 lists; up 18 since Jul 2024–Jun 2025.
90	Aes-Esfs JV II LLC Top agencies Army (Department of the Army)	$9,000,000	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
91	Pika International Inc. 2 awardees, including Pika-Pirnie JV LLC Top agencies Army (Department of the Army)	$8,949,915	0.1%	Rank history: not on the FY2021–FY2023 lists, #43 in FY2024 and #97 in FY2025; down 39 since Jul 2024–Jun 2025.
92	Sevenson-Usa Environmental Joint Venture II Top agencies Navy (Department of the Navy)	$8,928,243	0.1%	Rank history: not on the FY2021 list, #35 in FY2022, #32 in FY2023, #65 in FY2024 and not on the FY2025 list; up 266 since Jul 2024–Jun 2025.
93	LDS Kemron JV 4 LLC Top agencies Army (Department of the Army)	$8,488,321	0.1%	Rank history: not on the FY2021–FY2024 lists and #99 in FY2025; new, not ranked in Jul 2024–Jun 2025.
94	Charter Contracting Company, LLC Top agencies Army (Department of the Army)	$8,410,852	0.1%	Rank history: not on the FY2021–FY2023 lists, #86 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
95	Bhate Environmental Associates, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$8,390,907	0.1%	Rank history: #76 in FY2021, #55 in FY2022 and not on the FY2023–FY2025 lists; up 90 since Jul 2024–Jun 2025.
96	Aergc JV LLC Top agencies Army (Department of the Army)	$8,326,564	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
97	Foreign Utility Consolidated Reporting Top agencies Army (Department of the Army)	$8,120,060	0.1%	Rank history: #78 in FY2021, #84 in FY2022, not on the FY2023–FY2024 lists and #73 in FY2025; down 19 since Jul 2024–Jun 2025.
98	Meadows Cmpg, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$8,084,552	0.1%	Rank history: not on the FY2021–FY2025 lists; up 26 since Jul 2024–Jun 2025.
99	EQ & CH Remediation Top agencies EPA (Environmental Protection Agency)	$7,986,606	0.1%	Rank history: #63 in FY2021, #80 in FY2022, #79 in FY2023, #38 in FY2024 and not on the FY2025 list; down 57 since Jul 2024–Jun 2025.
100	Dorado Services, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$7,963,593	0.1%	Rank history: not on the FY2021–FY2022 lists, #81 in FY2023 and not on the FY2024–FY2025 lists; up 27 since Jul 2024–Jun 2025.

Show 75 more

100 of 2,610 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 562

Code	Net obligations	Largest contractor
5629 Remediation and Other Waste Management Services	$6,317,149,766	Amentum Holdings, Inc.
5622 Waste Treatment and Disposal	$1,440,023,648	Hanford Tank Waste Operations & Closure, LLC
5621 Waste Collection	$739,080,318	Ashbritt Inc.

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 $9.86 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.
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 NAICS 562 contractors in Jul 2025–Jun 2026?

1. Amentum Holdings, Inc. ($2.13B), 2. Savannah River Mission Completion, LLC ($1.17B), 3. Hanford Tank Waste Operations & Closure, LLC ($841M), 4. Ashbritt Inc. ($158M), 5. Hydrogeologic, Inc. ($141M), 6. Environmental Restoration LLC ($127M), 7. JBW Group LLC ($121M), 8. Bechtel Parsons Blue Grass, A Joint Venture ($110M), 9. Hanford Laboratory Management and Integration LLC ($107M), 10. West Valley Cleanup Alliance, LLC ($105M).

On GovTribe

Research every contractor on this list

Every contract, task order and IDV they hold
Their subsidiaries, teammates and competitors
Open opportunities they're positioned for
Alerts when they win new work

Try for free Login