Top 100 Contractors in NAICS 562910: Remediation Services, Jul 2025–Jun 2026

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Amentum Holdings, Inc. 9 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)	$2,138,274,744	31.4%	Rank history: not on the FY2021–FY2023 lists, #29 in FY2024 and #1 in FY2025; unchanged since Jul 2024–Jun 2025.
2	Savannah River Mission Completion, LLC Top agencies DOE (Department of Energy)	$1,168,123,719	17.1%	Rank history: not on the FY2021 list, #1 in FY2022, #1 in FY2023, #1 in FY2024 and #2 in FY2025; unchanged since Jul 2024–Jun 2025.
3	Hydrogeologic, Inc. Top agencies Army (Department of the Army) EPA (Environmental Protection Agency) Navy (Department of the Navy)	$140,965,215	2.1%	Rank history: #5 in FY2021, #7 in FY2022, #7 in FY2023, #9 in FY2024 and #6 in FY2025; up 5 since Jul 2024–Jun 2025.
4	Environmental Restoration LLC Top agencies EPA (Environmental Protection Agency) Army (Department of the Army) DOJ (Department of Justice)	$127,004,915	1.9%	Rank history: #9 in FY2021, #6 in FY2022, #11 in FY2023, #21 in FY2024 and #10 in FY2025; up 18 since Jul 2024–Jun 2025.
5	Hanford Laboratory Management and Integration LLC Top agencies DOE (Department of Energy)	$106,922,566	1.6%	Rank history: #21 in FY2021, #13 in FY2022, #15 in FY2023, #10 in FY2024 and #12 in FY2025; up 5 since Jul 2024–Jun 2025.
6	West Valley Cleanup Alliance, LLC Top agencies DOE (Department of Energy)	$104,567,286	1.5%	Rank history: not on the FY2021–FY2024 lists and #21 in FY2025; up 98 since Jul 2024–Jun 2025.
7	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	1.5%	Rank history: #7 in FY2021, #5 in FY2022, #6 in FY2023, #8 in FY2024 and #9 in FY2025; down 1 since Jul 2024–Jun 2025.
8	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	1.4%	Rank history: #12 in FY2021, #8 in FY2022, #8 in FY2023, #19 in FY2024 and #11 in FY2025; up 8 since Jul 2024–Jun 2025.
9	North Wind Portage, Inc. Top agencies DOE (Department of Energy) Army (Department of the Army)	$92,259,460	1.4%	Rank history: not on the FY2021 list, #22 in FY2022, #90 in FY2023, #18 in FY2024 and #13 in FY2025; up 2 since Jul 2024–Jun 2025.
10	Sevenson Environmental Services, Inc. Top agencies Army (Department of the Army) EPA (Environmental Protection Agency) Navy (Department of the Navy)	$91,940,821	1.3%	Rank history: #14 in FY2021, #10 in FY2022, #13 in FY2023, #5 in FY2024 and #5 in FY2025; down 6 since Jul 2024–Jun 2025.
11	Navarro Research and Engineering, Inc. Top agencies DOE (Department of Energy) Army (Department of the Army)	$86,864,638	1.3%	Rank history: #10 in FY2021, #16 in FY2022, #21 in FY2023, #20 in FY2024 and #16 in FY2025; up 7 since Jul 2024–Jun 2025.
12	Guidehouse Inc. 2 awardees, including Aptim Federal Services, LLC Top agencies DOE (Department of Energy) Army (Department of the Army) Navy (Department of the Navy)	$86,499,590	1.3%	Rank history: not on the FY2021–FY2023 lists, #17 in FY2024 and #8 in FY2025; up 3 since Jul 2024–Jun 2025.
13	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	1.2%	Rank history: #24 in FY2021, #42 in FY2022, #16 in FY2023, #53 in FY2024 and #4 in FY2025; new, not ranked in Jul 2024–Jun 2025.
14	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	1.2%	Rank history: not on the FY2021–FY2023 lists, #12 in FY2024 and #25 in FY2025; up 3 since Jul 2024–Jun 2025.
15	Energy Technology Alliance LLC Top agencies DOE (Department of Energy)	$78,984,913	1.2%	Rank history: not on the FY2021–FY2023 lists, #11 in FY2024 and #15 in FY2025; down 2 since Jul 2024–Jun 2025.
16	Fluor Corporation Through Fluor-Bwxt Portsmouth LLC Top agencies DOE (Department of Energy)	$71,702,610	1.1%	Rank history: #1 in FY2021, #3 in FY2022, #4 in FY2023, #3 in FY2024 and #3 in FY2025; down 13 since Jul 2024–Jun 2025.
17	Tehama Technical Services, LLC Top agencies EPA (Environmental Protection Agency) Army (Department of the Army) DOI (Department of the Interior)	$52,884,519	0.8%	Rank history: not on the FY2021–FY2024 lists and #63 in FY2025; up 77 since Jul 2024–Jun 2025.
18	Enviro-Fix Solutions LLC Top agencies Army (Department of the Army)	$49,701,228	0.7%	Rank history: not on the FY2021–FY2022 lists, #75 in FY2023, #64 in FY2024 and #48 in FY2025; up 149 since Jul 2024–Jun 2025.
19	Oneida Environmental, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$48,527,470	0.7%	Rank history: not on the FY2021–FY2024 lists and #20 in FY2025; up 86 since Jul 2024–Jun 2025.
20	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	0.6%	Rank history: not on the FY2021–FY2022 lists, #52 in FY2023, #92 in FY2024 and #23 in FY2025; up 79 since Jul 2024–Jun 2025.
21	Paragon Professional Services LLC 2 awardees Top agencies EPA (Environmental Protection Agency) DOE (Department of Energy) Army (Department of the Army)	$37,040,750	0.5%	Rank history: #47 in FY2021, #64 in FY2022, #33 in FY2023, #31 in FY2024 and #18 in FY2025; up 2 since Jul 2024–Jun 2025.
22	Cape Environmental Management Inc. Top agencies EPA (Environmental Protection Agency) USAF (Department of the Air Force) Army (Department of the Army)	$36,429,098	0.5%	Rank history: #11 in FY2021, #14 in FY2022, #38 in FY2023, #45 in FY2024 and #26 in FY2025; up 13 since Jul 2024–Jun 2025.
23	Environmental Chemical Corporation Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$35,468,891	0.5%	Rank history: #20 in FY2021, #29 in FY2022, #27 in FY2023, #24 in FY2024 and #22 in FY2025; up 5 since Jul 2024–Jun 2025.
24	Eastern Shawnee - Bay West JV, LLC Top agencies Army (Department of the Army)	$34,283,868	0.5%	Rank history: not on the FY2021–FY2024 lists and #51 in FY2025; new, not ranked in Jul 2024–Jun 2025.
25	AECOM Technical Services, Inc. Top agencies EPA (Environmental Protection Agency) Army (Department of the Army) DLA (Defense Logistics Agency)	$33,908,743	0.5%	Rank history: #67 in FY2021, not on the FY2022–FY2023 lists, #13 in FY2024 and #17 in FY2025; down 13 since Jul 2024–Jun 2025.
26	Ch2M Hill, Inc. Top agencies EPA (Environmental Protection Agency) Army (Department of the Army)	$31,309,493	0.5%	Rank history: not on the FY2021 list, #27 in FY2022, not on the FY2023 list, #27 in FY2024 and #24 in FY2025; up 4 since Jul 2024–Jun 2025.
27	Couvillion Group LLC Top agencies DHS (Department of Homeland Security)	$25,991,966	0.4%	Rank history: not on the FY2021 list, #38 in FY2022, #42 in FY2023, #56 in FY2024 and #31 in FY2025; up 9 since Jul 2024–Jun 2025.
28	Gsia-Parsons JV LLC Top agencies Army (Department of the Army)	$25,463,633	0.4%	Rank history: not on the FY2021–FY2024 lists and #39 in FY2025; new, not ranked in Jul 2024–Jun 2025.
29	CDM Federal Programs Corporation Top agencies EPA (Environmental Protection Agency) Army (Department of the Army)	$24,985,099	0.4%	Rank history: not on the FY2021–FY2022 lists, #99 in FY2023, #37 in FY2024 and #33 in FY2025; unchanged since Jul 2024–Jun 2025.
30	Kfs, LLC Top agencies Army (Department of the Army)	$24,378,890	0.4%	Rank history: #94 in FY2021 and not on the FY2022–FY2025 lists; up 170 since Jul 2024–Jun 2025.
31	Weston Solutions Holdings Inc Through Weston Solutions Inc. Top agencies Army (Department of the Army)	$23,205,299	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
32	Hgl-Aptim JV LLC Top agencies Army (Department of the Army)	$23,165,403	0.3%	Rank history: #36 in FY2021, #31 in FY2022, #50 in FY2023, #32 in FY2024 and #35 in FY2025; up 9 since Jul 2024–Jun 2025.
33	USA Environmental, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$22,880,098	0.3%	Rank history: #46 in FY2021, #52 in FY2022, #53 in FY2023, #60 in FY2024 and #41 in FY2025; up 17 since Jul 2024–Jun 2025.
34	Hgl-Aptim Technologies JV LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$22,482,814	0.3%	Rank history: not on the FY2021–FY2024 lists and #19 in FY2025; up 5 since Jul 2024–Jun 2025.
35	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	0.3%	Rank history: #51 in FY2021, #21 in FY2022, #46 in FY2023, #59 in FY2024 and #28 in FY2025; up 12 since Jul 2024–Jun 2025.
36	Brice Engineering, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$21,466,285	0.3%	Rank history: #45 in FY2021, #25 in FY2022, #18 in FY2023, #49 in FY2024 and #30 in FY2025; down 5 since Jul 2024–Jun 2025.
37	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	0.3%	Rank history: not on the FY2021–FY2023 lists, #47 in FY2024 and #29 in FY2025; up 6 since Jul 2024–Jun 2025.
38	Advanced Technologies and Laboratories (Atl) International, Inc. Top agencies HHS (Department of Health and Human Services)	$20,501,471	0.3%	Rank history: #66 in FY2021, not on the FY2022–FY2023 lists, #66 in FY2024 and not on the FY2025 list; up 23 since Jul 2024–Jun 2025.
39	Cherokee Nation Red Wing, L.L.C. Through Cherokee Strategic Solutions, L.L.C. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$19,998,468	0.3%	Rank history: not on the FY2021–FY2023 lists, #87 in FY2024 and #44 in FY2025; up 32 since Jul 2024–Jun 2025.
40	Dawson Solutions LLC Top agencies DHS (Department of Homeland Security) Army (Department of the Army) USDA (Department of Agriculture)	$19,682,672	0.3%	Rank history: not on the FY2021–FY2022 lists, #73 in FY2023, #16 in FY2024 and #50 in FY2025; unchanged since Jul 2024–Jun 2025.
41	Bay West LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) GSA (General Services Administration)	$18,959,912	0.3%	Rank history: #69 in FY2021, #70 in FY2022, #48 in FY2023, #55 in FY2024 and #36 in FY2025; up 8 since Jul 2024–Jun 2025.
42	Jacobs Engineering Group Inc. 5 awardees, including Jacobs Usae Joint Venture, Jacobs Government Services Company and Ch2M Hill Constructors, Inc. Top agencies EPA (Environmental Protection Agency) Army (Department of the Army) DLA (Defense Logistics Agency)	$17,401,590	0.3%	Rank history: not on the FY2021–FY2022 lists, #34 in FY2023, #25 in FY2024 and #27 in FY2025; down 18 since Jul 2024–Jun 2025.
43	Republic Services Inc. 4 awardees, including Environmental, Safety & Health Consulting Services, Inc. Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy)	$17,152,814	0.3%	Rank history: not on the FY2021–FY2024 lists and #32 in FY2025; down 5 since Jul 2024–Jun 2025.
44	Koman Government Solutions LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) DHS (Department of Homeland Security)	$16,979,084	0.2%	Rank history: not on the FY2021–FY2023 lists, #67 in FY2024 and #53 in FY2025; up 11 since Jul 2024–Jun 2025.
45	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 #49 in FY2025; new, not ranked in Jul 2024–Jun 2025.
46	Aptim Hdr, LLC Top agencies EPA (Environmental Protection Agency)	$14,310,240	0.2%	Rank history: not on the FY2021–FY2025 lists; up 225 since Jul 2024–Jun 2025.
47	The Source Group, Inc. Top agencies DLA (Defense Logistics Agency)	$14,088,269	0.2%	Rank history: #17 in FY2021, #41 in FY2022, not on the FY2023 list, #90 in FY2024 and #60 in FY2025; up 42 since Jul 2024–Jun 2025.
48	C M C, Inc. Top agencies EPA (Environmental Protection Agency)	$14,024,236	0.2%	Rank history: #56 in FY2021, #30 in FY2022, #28 in FY2023, #38 in FY2024 and #83 in FY2025; up 3 since Jul 2024–Jun 2025.
49	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	0.2%	Rank history: not on the FY2021–FY2023 lists, #71 in FY2024 and #59 in FY2025; up 24 since Jul 2024–Jun 2025.
50	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	0.2%	Rank history: #34 in FY2021, #86 in FY2022, #57 in FY2023, #51 in FY2024 and #37 in FY2025; down 16 since Jul 2024–Jun 2025.
51	Arrowhead Contracting, LLC Top agencies EPA (Environmental Protection Agency)	$13,197,977	0.2%	Rank history: not on the FY2021–FY2022 lists, #41 in FY2023, not on the FY2024 list and #45 in FY2025; up 26 since Jul 2024–Jun 2025.
52	Lata-Cti Environmental Services LLC Top agencies USAF (Department of the Air Force)	$13,128,939	0.2%	Rank history: not on the FY2021 list, #94 in FY2022, not on the FY2023 list, #84 in FY2024 and #77 in FY2025; up 39 since Jul 2024–Jun 2025.
53	Arcadis U.s., Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$12,637,944	0.2%	Rank history: not on the FY2021–FY2024 lists and #52 in FY2025; up 119 since Jul 2024–Jun 2025.
54	Catawba Teapec LLC Top agencies DOE (Department of Energy)	$12,434,977	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
55	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	0.2%	Rank history: not on the FY2021 list, #61 in FY2022, #25 in FY2023, #30 in FY2024 and #54 in FY2025; down 30 since Jul 2024–Jun 2025.
56	J.f. Brennan Company, Inc. Top agencies EPA (Environmental Protection Agency) Army (Department of the Army)	$11,975,029	0.2%	Rank history: not on the FY2021 list, #12 in FY2022, not on the FY2023 list, #42 in FY2024 and #99 in FY2025; up 98 since Jul 2024–Jun 2025.
57	Cape-Weston JV3 LLC Top agencies Navy (Department of the Navy)	$10,902,042	0.2%	Rank history: not on the FY2021–FY2022 lists, #62 in FY2023, #33 in FY2024 and #42 in FY2025; down 3 since Jul 2024–Jun 2025.
58	Leidos Holdings, Inc. Through Leidos, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$10,614,833	0.2%	Rank history: #52 in FY2021, #55 in FY2022, #66 in FY2023, #97 in FY2024 and #43 in FY2025; down 6 since Jul 2024–Jun 2025.
59	Clean Harbors Inc. Through Clean Harbors Environmental Services Inc. Top agencies DHS (Department of Homeland Security) USDA (Department of Agriculture) VA (Department of Veterans Affairs)	$10,458,675	0.2%	Rank history: not on the FY2021–FY2024 lists and #55 in FY2025; up 3 since Jul 2024–Jun 2025.
60	S&K Mission Support, LLC Top agencies DOE (Department of Energy)	$10,375,427	0.2%	Rank history: not on the FY2021–FY2024 lists and #61 in FY2025; up 5 since Jul 2024–Jun 2025.
61	Ahtna Global LLC Top agencies Army (Department of the Army)	$9,969,175	0.1%	Rank history: not on the FY2021–FY2024 lists and #38 in FY2025; down 8 since Jul 2024–Jun 2025.
62	Engineering / Remediation Resources Group, Inc. 2 awardees Top agencies Navy (Department of the Navy) USDA (Department of Agriculture) Army (Department of the Army)	$9,493,510	0.1%	Rank history: not on the FY2021–FY2023 lists, #78 in FY2024 and #56 in FY2025; up 16 since Jul 2024–Jun 2025.
63	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.
64	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, #39 in FY2024 and #69 in FY2025; down 22 since Jul 2024–Jun 2025.
65	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, #33 in FY2022, #31 in FY2023, #58 in FY2024 and not on the FY2025 list; up 155 since Jul 2024–Jun 2025.
66	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 #70 in FY2025; new, not ranked in Jul 2024–Jun 2025.
67	Charter Contracting Company, LLC Top agencies Army (Department of the Army)	$8,410,852	0.1%	Rank history: not on the FY2021–FY2023 lists, #73 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
68	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: #63 in FY2021, #50 in FY2022, #91 in FY2023, not on the FY2024 list and #91 in FY2025; up 57 since Jul 2024–Jun 2025.
69	Aergc JV LLC Top agencies Army (Department of the Army)	$8,326,564	0.1%	Rank history: not on the FY2021–FY2024 lists and #72 in FY2025; new, not ranked in Jul 2024–Jun 2025.
70	EQ & CH Remediation Top agencies EPA (Environmental Protection Agency)	$7,986,606	0.1%	Rank history: #53 in FY2021, #68 in FY2022, #71 in FY2023, #35 in FY2024 and not on the FY2025 list; down 38 since Jul 2024–Jun 2025.
71	Pika-Insight JV LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$7,826,785	0.1%	Rank history: not on the FY2021–FY2022 lists, #40 in FY2023 and not on the FY2024–FY2025 lists; up 53 since Jul 2024–Jun 2025.
72	Professional Project Services, Inc. Top agencies DOE (Department of Energy)	$7,724,567	0.1%	Rank history: #65 in FY2021, #63 in FY2022, not on the FY2023 list, #77 in FY2024 and #81 in FY2025; up 4 since Jul 2024–Jun 2025.
73	SES Civil and Environmental LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$7,539,355	0.1%	Rank history: not on the FY2021–FY2023 lists, #82 in FY2024 and #74 in FY2025; up 9 since Jul 2024–Jun 2025.
74	Conti Federal Services, LLC Top agencies EPA (Environmental Protection Agency) Army (Department of the Army)	$7,243,973	0.1%	Rank history: not on the FY2021–FY2023 lists, #44 in FY2024 and #34 in FY2025; down 26 since Jul 2024–Jun 2025.
75	WSP USA Environment & Infrastructure Inc. Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$7,237,424	0.1%	Rank history: not on the FY2021–FY2024 lists and #73 in FY2025; up 33 since Jul 2024–Jun 2025.
76	Ahtna-Arcadis 8(A) JV, LLC Top agencies Army (Department of the Army)	$6,963,269	0.1%	Rank history: not on the FY2021–FY2022 lists, #67 in FY2023, #50 in FY2024 and #64 in FY2025; down 8 since Jul 2024–Jun 2025.
77	Wsp-Versar JV Through Versar-Wsp JV Top agencies EPA (Environmental Protection Agency)	$6,957,457	0.1%	Rank history: not on the FY2021–FY2025 lists; up 24 since Jul 2024–Jun 2025.
78	Resolve Marine Group Inc. Top agencies DHS (Department of Homeland Security)	$6,438,062	0.1%	Rank history: #73 in FY2021 and not on the FY2022–FY2025 lists; up 65 since Jul 2024–Jun 2025.
79	Fidelis-Bbd, LLC Top agencies EPA (Environmental Protection Agency)	$6,030,015	0.1%	Rank history: not on the FY2021–FY2024 lists and #84 in FY2025; new, not ranked in Jul 2024–Jun 2025.
80	Nuclear Ship Support Services LLC Top agencies DOT (Department of Transportation)	$6,026,132	0.1%	Rank history: #18 in FY2021, #56 in FY2022, #100 in FY2023, not on the FY2024 list and #79 in FY2025; up 32 since Jul 2024–Jun 2025.
81	Bhate Zapata, LLC Top agencies Army (Department of the Army)	$5,938,191	0.1%	Rank history: #35 in FY2021, #99 in FY2022, #78 in FY2023 and not on the FY2024–FY2025 lists; up 54 since Jul 2024–Jun 2025.
82	Osage Nation Energy Services LLC Top agencies Army (Department of the Army)	$5,875,047	0.1%	Rank history: not on the FY2021–FY2024 lists and #85 in FY2025; up 76 since Jul 2024–Jun 2025.
83	Oneida-Stantec JV LLC Top agencies Army (Department of the Army)	$5,788,032	0.1%	Rank history: not on the FY2021–FY2024 lists and #92 in FY2025; new, not ranked in Jul 2024–Jun 2025.
84	Brice Integrated LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$5,730,762	0.1%	Rank history: not on the FY2021–FY2024 lists and #87 in FY2025; up 38 since Jul 2024–Jun 2025.
85	Meadows Cmpg, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$5,519,097	0.1%	Rank history: #93 in FY2021 and not on the FY2022–FY2025 lists; up 48 since Jul 2024–Jun 2025.
86	Cape-Weston JV1 LLC Top agencies Army (Department of the Army)	$5,492,866	0.1%	Rank history: not on the FY2021–FY2023 lists, #63 in FY2024 and #89 in FY2025; up 27 since Jul 2024–Jun 2025.
87	Sargent Corporation Top agencies Army (Department of the Army)	$5,414,000	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
88	LPS Kemron JV LLC Top agencies EPA (Environmental Protection Agency)	$5,411,026	0.1%	Rank history: not on the FY2021–FY2024 lists and #90 in FY2025; up 12 since Jul 2024–Jun 2025.
89	Applied Aquatic Management, Inc. Top agencies Army (Department of the Army)	$5,277,140	0.1%	Rank history: not on the FY2021 list, #66 in FY2022 and not on the FY2023–FY2025 lists; up 6 since Jul 2024–Jun 2025.
90	A and M Engineering & Environmental Services, Inc. Top agencies EPA (Environmental Protection Agency)	$5,239,200	0.1%	Rank history: #75 in FY2021, #85 in FY2022, not on the FY2023 list, #88 in FY2024 and #76 in FY2025; down 5 since Jul 2024–Jun 2025.
91	Gsina-Gilbane II JV LLC Top agencies USAF (Department of the Air Force)	$4,984,386	0.1%	Rank history: not on the FY2021–FY2023 lists, #98 in FY2024 and #98 in FY2025; down 3 since Jul 2024–Jun 2025.
92	Verina Consulting Group LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$4,901,992	0.1%	Rank history: not on the FY2021–FY2024 lists and #100 in FY2025; up 86 since Jul 2024–Jun 2025.
93	Williams Diversified Materials, Inc. Top agencies EPA (Environmental Protection Agency)	$4,849,351	0.1%	Rank history: not on the FY2021–FY2025 lists; up 58 since Jul 2024–Jun 2025.
94	Hdr, Inc. 2 awardees, including HDR Aptim LLC and HDR Environmental, Operations and Construction, Inc. Top agencies EPA (Environmental Protection Agency) Army (Department of the Army)	$4,845,425	0.1%	Rank history: #57 in FY2021, #46 in FY2022, #56 in FY2023 and not on the FY2024–FY2025 lists; down 14 since Jul 2024–Jun 2025.
95	Aptim Geosyntec JV LLC Top agencies Army (Department of the Army)	$4,625,807	0.1%	Rank history: not on the FY2021–FY2025 lists; up 193 since Jul 2024–Jun 2025.
96	Indus General Inc. Top agencies Navy (Department of the Navy)	$4,477,290	0.1%	Rank history: not on the FY2021–FY2025 lists; up 302 since Jul 2024–Jun 2025.
97	Chemtrack Alaska, Inc. Top agencies USAF (Department of the Air Force) DOT (Department of Transportation)	$4,347,460	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
98	3D Envirologics LLC Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy)	$4,302,088	0.1%	Rank history: not on the FY2021–FY2022 lists, #95 in FY2023, not on the FY2024 list and #86 in FY2025; up 41 since Jul 2024–Jun 2025.
99	GSI North America Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$4,215,520	0.1%	Rank history: not on the FY2021–FY2023 lists, #95 in FY2024 and #96 in FY2025; up 37 since Jul 2024–Jun 2025.
100	Enhanced Environmental & Emergency Services Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DOJ (Department of Justice)	$4,063,960	0.1%	Rank history: not on the FY2021–FY2024 lists and #93 in FY2025; up 23 since Jul 2024–Jun 2025.

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 $6.82 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