Top 100 Contractors in PSC F108: Hazardous Substance Removal, Cleanup, and Disposal Services and Operational Support, Jul 2025–Jun 2026

Name: Top 100 Contractors in PSC F108: Hazardous Substance Removal, Cleanup, and Disposal Services and Operational Support, 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 38% of PSC F108 contract dollars from July 2025 through June 2026

Contract obligations: $1,720,520,021 Net of deobligations, by contracts coded PSC F108
Contractors: 658 Parent companies with an obligation
Largest contractor: Bechtel Parsons Blue Grass, A Joint Venture $110 million, 5.3% 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 Parsons Blue Grass, A Joint Venture Top agencies Army (Department of the Army)	$109,599,732	5.3%	Rank history: not on the FY2021–FY2023 lists, #2 in FY2024 and #1 in FY2025; up 1 since Jul 2024–Jun 2025.
2	Environmental Restoration LLC Top agencies EPA (Environmental Protection Agency) DOJ (Department of Justice) Army (Department of the Army)	$107,904,714	5.2%	Rank history: #3 in FY2021, #3 in FY2022, #8 in FY2023, #11 in FY2024 and #5 in FY2025; up 11 since Jul 2024–Jun 2025.
3	North Wind Portage, Inc. Top agencies DOE (Department of Energy) Army (Department of the Army)	$91,985,973	4.5%	Rank history: not on the FY2021 list, #7 in FY2022, #44 in FY2023, #7 in FY2024 and #6 in FY2025; up 3 since Jul 2024–Jun 2025.
4	Kemron Environmental Services Inc. 2 awardees, including Kemron / Arrowhead JV, LLC Top agencies EPA (Environmental Protection Agency) Army (Department of the Army)	$81,078,975	3.9%	Rank history: not on the FY2021–FY2023 lists, #6 in FY2024 and #15 in FY2025; up 5 since Jul 2024–Jun 2025.
5	Hydrogeologic, Inc. Top agencies EPA (Environmental Protection Agency) Army (Department of the Army) Navy (Department of the Navy)	$81,020,888	3.9%	Rank history: #2 in FY2021, #4 in FY2022, #4 in FY2023, #5 in FY2024 and #9 in FY2025; up 3 since Jul 2024–Jun 2025.
6	Amentum Holdings, Inc. 3 awardees, including Amentum Technology, Inc., Amentum Environment & Energy, Inc. and Amentum Services, Inc. Top agencies Army (Department of the Army) DOT (Department of Transportation) Navy (Department of the Navy)	$71,099,214	3.5%	Rank history: not on the FY2021–FY2024 lists and #7 in FY2025; up 6 since Jul 2024–Jun 2025.
7	Bechtel Corp Through Bechtel National, Inc. Top agencies Army (Department of the Army)	$68,453,847	3.3%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023, #1 in FY2024 and #2 in FY2025; down 4 since Jul 2024–Jun 2025.
8	EA Engineering Science and Technology Inc. PBC Top agencies EPA (Environmental Protection Agency) Army (Department of the Army) USAF (Department of the Air Force)	$66,302,360	3.2%	Rank history: #7 in FY2021, #2 in FY2022, #5 in FY2023, #4 in FY2024 and #8 in FY2025; down 4 since Jul 2024–Jun 2025.
9	Tehama Technical Services, LLC Top agencies EPA (Environmental Protection Agency) Army (Department of the Army)	$52,708,341	2.6%	Rank history: not on the FY2021–FY2024 lists and #41 in FY2025; up 44 since Jul 2024–Jun 2025.
10	Enviro-Fix Solutions LLC Top agencies Army (Department of the Army)	$49,701,228	2.4%	Rank history: not on the FY2021–FY2022 lists, #32 in FY2023, #35 in FY2024 and #30 in FY2025; up 87 since Jul 2024–Jun 2025.
11	Oneida Environmental, LLC Top agencies Army (Department of the Army)	$48,508,918	2.4%	Rank history: not on the FY2021–FY2024 lists and #11 in FY2025; up 96 since Jul 2024–Jun 2025.
12	Inmar RX Solutions Inc. Top agencies HHS (Department of Health and Human Services)	$40,724,002	2.0%	Rank history: not on the FY2021–FY2024 lists and #12 in FY2025; new, not ranked in Jul 2024–Jun 2025.
13	Eastern Shawnee - Bay West JV, LLC Top agencies Army (Department of the Army)	$34,283,868	1.7%	Rank history: not on the FY2021–FY2024 lists and #33 in FY2025; new, not ranked in Jul 2024–Jun 2025.
14	Weston Solutions Holdings Inc Through Weston Solutions Inc. Top agencies Army (Department of the Army) EPA (Environmental Protection Agency)	$32,787,962	1.6%	Rank history: #58 in FY2021, #31 in FY2022, #43 in FY2023, #21 in FY2024 and #38 in FY2025; new, not ranked in Jul 2024–Jun 2025.
15	Sevenson Environmental Services, Inc. Top agencies Army (Department of the Army)	$31,569,065	1.5%	Rank history: not on the FY2021–FY2022 lists, #25 in FY2023, #3 in FY2024 and #3 in FY2025; down 14 since Jul 2024–Jun 2025.
16	Promethean Operating I LLC Top agencies DOI (Department of the Interior)	$30,121,961	1.5%	Rank history: not on the FY2021–FY2023 lists, #33 in FY2024 and #31 in FY2025; up 90 since Jul 2024–Jun 2025.
17	AECOM Technical Services, Inc. Top agencies EPA (Environmental Protection Agency) Army (Department of the Army) VA (Department of Veterans Affairs)	$29,428,774	1.4%	Rank history: not on the FY2021–FY2023 lists, #8 in FY2024 and #10 in FY2025; down 10 since Jul 2024–Jun 2025.
18	Tetra Tech, Inc. 7 awardees, including Tetra TECH EC, Inc. Top agencies Army (Department of the Army) EPA (Environmental Protection Agency)	$28,210,571	1.4%	Rank history: #13 in FY2021, #14 in FY2022, #24 in FY2023, #12 in FY2024 and #13 in FY2025; down 4 since Jul 2024–Jun 2025.
19	Gsia-Parsons JV LLC Top agencies Army (Department of the Army)	$25,463,633	1.2%	Rank history: not on the FY2021–FY2024 lists and #21 in FY2025; new, not ranked in Jul 2024–Jun 2025.
20	Kfs, LLC Top agencies Army (Department of the Army)	$23,400,000	1.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
21	Cape Environmental Management Inc. Top agencies EPA (Environmental Protection Agency) Army (Department of the Army) Navy (Department of the Navy)	$23,334,124	1.1%	Rank history: #50 in FY2021, #23 in FY2022, not on the FY2023–FY2024 lists and #48 in FY2025; new, not ranked in Jul 2024–Jun 2025.
22	CDM Federal Programs Corporation Top agencies EPA (Environmental Protection Agency) Army (Department of the Army)	$22,975,252	1.1%	Rank history: not on the FY2021–FY2022 lists, #47 in FY2023, #22 in FY2024 and #16 in FY2025; down 5 since Jul 2024–Jun 2025.
23	Aleut Environmental Remediation, LLC Top agencies Army (Department of the Army)	$22,408,328	1.1%	Rank history: not on the FY2021–FY2024 lists and #19 in FY2025; up 122 since Jul 2024–Jun 2025.
24	Paragon Professional Services LLC 2 awardees Top agencies EPA (Environmental Protection Agency) Army (Department of the Army) DOI (Department of the Interior)	$21,968,847	1.1%	Rank history: not on the FY2021–FY2022 lists, #30 in FY2023, #29 in FY2024 and #22 in FY2025; up 6 since Jul 2024–Jun 2025.
25	Hgl-Aptim JV LLC Top agencies Army (Department of the Army)	$21,213,816	1.0%	Rank history: not on the FY2021 list, #18 in FY2022, #37 in FY2023, #16 in FY2024 and #20 in FY2025; down 4 since Jul 2024–Jun 2025.
26	Bristol Bay Native Corporation 2 awardees, including Bristol Environmental Solutions LLC Top agencies Army (Department of the Army)	$21,024,696	1.0%	Rank history: not on the FY2021–FY2022 lists, #36 in FY2023, #76 in FY2024 and #24 in FY2025; up 205 since Jul 2024–Jun 2025.
27	Guidehouse Inc. 2 awardees, including Aptim Federal Services, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$19,502,778	0.9%	Rank history: not on the FY2021–FY2023 lists, #39 in FY2024 and #27 in FY2025; down 2 since Jul 2024–Jun 2025.
28	Brice Engineering, LLC Top agencies Army (Department of the Army)	$14,927,163	0.7%	Rank history: #21 in FY2021, #20 in FY2022, #15 in FY2023, #59 in FY2024 and #28 in FY2025; unchanged since Jul 2024–Jun 2025.
29	Aptim Hdr, LLC Top agencies EPA (Environmental Protection Agency)	$14,310,240	0.7%	Rank history: not on the FY2021–FY2025 lists; up 133 since Jul 2024–Jun 2025.
30	C M C, Inc. Top agencies EPA (Environmental Protection Agency)	$14,024,236	0.7%	Rank history: #23 in FY2021, #11 in FY2022, #12 in FY2023, #18 in FY2024 and #52 in FY2025; down 6 since Jul 2024–Jun 2025.
31	Environmental Chemical Corporation Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$13,812,421	0.7%	Rank history: #86 in FY2021, not on the FY2022 list, #45 in FY2023, #23 in FY2024 and #34 in FY2025; down 5 since Jul 2024–Jun 2025.
32	Ahtna Global LLC 2 awardees Top agencies Army (Department of the Army)	$13,615,378	0.7%	Rank history: not on the FY2021–FY2023 lists, #55 in FY2024 and #17 in FY2025; down 5 since Jul 2024–Jun 2025.
33	Arrowhead Contracting, LLC Top agencies EPA (Environmental Protection Agency)	$13,197,977	0.6%	Rank history: not on the FY2021–FY2022 lists, #21 in FY2023, #66 in FY2024 and #26 in FY2025; up 8 since Jul 2024–Jun 2025.
34	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)	$12,843,595	0.6%	Rank history: not on the FY2021–FY2022 lists, #52 in FY2023, #44 in FY2024 and #25 in FY2025; up 5 since Jul 2024–Jun 2025.
35	J.f. Brennan Company, Inc. Top agencies EPA (Environmental Protection Agency) Army (Department of the Army)	$12,827,713	0.6%	Rank history: not on the FY2021–FY2023 lists, #19 in FY2024 and #60 in FY2025; up 54 since Jul 2024–Jun 2025.
36	Parsons Corporation Through Parsons Government Services Inc. Top agencies Army (Department of the Army) MDA (DOD Missile Defense Agency)	$11,374,927	0.6%	Rank history: #20 in FY2021, #30 in FY2022, #34 in FY2023, #61 in FY2024 and #29 in FY2025; up 12 since Jul 2024–Jun 2025.
37	Hgl-Aptim Technologies JV LLC Top agencies Army (Department of the Army) DOE (Department of Energy) USAF (Department of the Air Force)	$10,940,947	0.5%	Rank history: not on the FY2021–FY2024 lists and #14 in FY2025; down 18 since Jul 2024–Jun 2025.
38	Seaon Environmental LLC Top agencies Navy (Department of the Navy)	$9,539,980	0.5%	Rank history: #66 in FY2021, #50 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
39	Veolia Es Technical Solutions LLC Top agencies Army (Department of the Army) DOJ (Department of Justice) EPA (Environmental Protection Agency)	$9,294,743	0.5%	Rank history: not on the FY2021–FY2023 lists, #94 in FY2024 and #37 in FY2025; up 16 since Jul 2024–Jun 2025.
40	Aes-Esfs JV II LLC Top agencies Army (Department of the Army)	$9,000,000	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
41	Aergc JV LLC Top agencies Army (Department of the Army)	$8,326,564	0.4%	Rank history: not on the FY2021–FY2024 lists and #45 in FY2025; new, not ranked in Jul 2024–Jun 2025.
42	Triumvirate Environmental, LLC Top agencies HHS (Department of Health and Human Services) Commerce (Department of Commerce) Army (Department of the Army)	$8,263,391	0.4%	Rank history: #48 in FY2021, #55 in FY2022, #50 in FY2023, #53 in FY2024 and #51 in FY2025; up 7 since Jul 2024–Jun 2025.
43	Fpm-Aecom JV1 2 awardees, including Fpm-Aecom JV2 Top agencies Army (Department of the Army)	$8,188,194	0.4%	Rank history: not on the FY2021 list, #28 in FY2022, #22 in FY2023, #37 in FY2024 and #50 in FY2025; down 20 since Jul 2024–Jun 2025.
44	Navarro Research and Engineering, Inc. Top agencies Army (Department of the Army)	$8,136,485	0.4%	Rank history: #31 in FY2021, #29 in FY2022, #46 in FY2023, #34 in FY2024 and #42 in FY2025; up 13 since Jul 2024–Jun 2025.
45	Pika-Insight JV LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$7,826,785	0.4%	Rank history: not on the FY2021–FY2022 lists, #20 in FY2023, #88 in FY2024 and not on the FY2025 list; up 23 since Jul 2024–Jun 2025.
46	Ch2M Hill, Inc. Top agencies EPA (Environmental Protection Agency) Army (Department of the Army)	$7,629,257	0.4%	Rank history: #69 in FY2021, #19 in FY2022, #90 in FY2023, #31 in FY2024 and #36 in FY2025; down 11 since Jul 2024–Jun 2025.
47	Republic Services Inc. 6 awardees, including US Ecology Washington Inc., Environmental, Safety & Health Consulting Services, Inc. and ACV Environmental Services Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) DHS (Department of Homeland Security)	$7,358,803	0.4%	Rank history: not on the FY2021–FY2025 lists; up 56 since Jul 2024–Jun 2025.
48	Energysolutions Services, Inc. Top agencies Navy (Department of the Navy)	$7,271,406	0.4%	Rank history: not on the FY2021–FY2024 lists and #84 in FY2025; up 269 since Jul 2024–Jun 2025.
49	Wsp-Versar JV Through Versar-Wsp JV Top agencies EPA (Environmental Protection Agency)	$6,845,477	0.3%	Rank history: not on the FY2021–FY2023 lists, #100 in FY2024 and not on the FY2025 list; up 21 since Jul 2024–Jun 2025.
50	EQ & CH Remediation Top agencies EPA (Environmental Protection Agency)	$6,813,870	0.3%	Rank history: #22 in FY2021, not on the FY2022 list, #31 in FY2023, #15 in FY2024 and not on the FY2025 list; down 34 since Jul 2024–Jun 2025.
51	Fidelis-Bbd, LLC Top agencies EPA (Environmental Protection Agency)	$6,030,015	0.3%	Rank history: not on the FY2021–FY2024 lists and #53 in FY2025; new, not ranked in Jul 2024–Jun 2025.
52	Environmental Science Corporation Top agencies Navy (Department of the Navy)	$5,848,189	0.3%	Rank history: not on the FY2021–FY2024 lists and #56 in FY2025; new, not ranked in Jul 2024–Jun 2025.
53	Oneida-Stantec JV LLC Top agencies Army (Department of the Army)	$5,790,532	0.3%	Rank history: not on the FY2021–FY2024 lists and #59 in FY2025; new, not ranked in Jul 2024–Jun 2025.
54	Calista Corp Through Brice Environmental Services Corporation Top agencies Army (Department of the Army)	$5,785,666	0.3%	Rank history: not on the FY2021–FY2023 lists, #78 in FY2024 and not on the FY2025 list; up 15 since Jul 2024–Jun 2025.
55	Conti Federal Services, LLC Top agencies EPA (Environmental Protection Agency)	$5,677,666	0.3%	Rank history: not on the FY2021–FY2023 lists, #24 in FY2024 and #18 in FY2025; down 33 since Jul 2024–Jun 2025.
56	Sargent Corporation Top agencies Army (Department of the Army)	$5,414,000	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
57	LPS Kemron JV LLC Top agencies EPA (Environmental Protection Agency)	$5,411,026	0.3%	Rank history: not on the FY2021–FY2024 lists and #57 in FY2025; up 1 since Jul 2024–Jun 2025.
58	A and M Engineering & Environmental Services, Inc. Top agencies EPA (Environmental Protection Agency)	$5,239,200	0.3%	Rank history: #36 in FY2021, #33 in FY2022, not on the FY2023 list, #48 in FY2024 and #47 in FY2025; down 13 since Jul 2024–Jun 2025.
59	Inspection Experts Inc. Top agencies DHS (Department of Homeland Security) Army (Department of the Army) Navy (Department of the Navy)	$5,131,845	0.2%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2023, #99 in FY2024 and #58 in FY2025; new, not ranked in Jul 2024–Jun 2025.
60	Ahtna-Arcadis 8(A) JV, LLC Top agencies Army (Department of the Army)	$5,117,664	0.2%	Rank history: not on the FY2021–FY2022 lists, #72 in FY2023, #36 in FY2024 and #54 in FY2025; down 1 since Jul 2024–Jun 2025.
61	Charter Contracting Company, LLC Top agencies Army (Department of the Army)	$4,940,000	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
62	Williams Diversified Materials, Inc. Top agencies EPA (Environmental Protection Agency)	$4,849,351	0.2%	Rank history: not on the FY2021–FY2023 lists, #92 in FY2024 and not on the FY2025 list; up 26 since Jul 2024–Jun 2025.
63	Pika International Inc. 2 awardees, including Pika-Pirnie JV LLC Top agencies Army (Department of the Army)	$4,828,279	0.2%	Rank history: not on the FY2021–FY2023 lists, #68 in FY2024 and #68 in FY2025; up 94 since Jul 2024–Jun 2025.
64	Bayside-Errg JV Top agencies DOI (Department of the Interior)	$4,549,842	0.2%	Rank history: not on the FY2021–FY2024 lists and #61 in FY2025; new, not ranked in Jul 2024–Jun 2025.
65	Chemtrack Alaska, Inc. Top agencies USAF (Department of the Air Force) DOT (Department of Transportation)	$4,328,541	0.2%	Rank history: not on the FY2021–FY2025 lists; up 425 since Jul 2024–Jun 2025.
66	3D Envirologics LLC Top agencies HHS (Department of Health and Human Services)	$4,309,856	0.2%	Rank history: not on the FY2021–FY2023 lists, #86 in FY2024 and #55 in FY2025; up 14 since Jul 2024–Jun 2025.
67	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)	$4,309,705	0.2%	Rank history: #32 in FY2021, #22 in FY2022, #27 in FY2023, #63 in FY2024 and #95 in FY2025; down 16 since Jul 2024–Jun 2025.
68	Cape-Weston JV3 LLC Top agencies Navy (Department of the Navy)	$4,243,772	0.2%	Rank history: not on the FY2021–FY2024 lists and #44 in FY2025; down 24 since Jul 2024–Jun 2025.
69	GSI North America Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$4,093,785	0.2%	Rank history: not on the FY2021–FY2023 lists, #52 in FY2024 and #65 in FY2025; up 17 since Jul 2024–Jun 2025.
70	Orin Technologies, Llc. Top agencies USAF (Department of the Air Force)	$3,958,040	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
71	C & C Environmental Inc. Top agencies Army (Department of the Army)	$3,913,240	0.2%	Rank history: #56 in FY2021, #61 in FY2022, #74 in FY2023, #87 in FY2024 and #63 in FY2025; down 10 since Jul 2024–Jun 2025.
72	Noreas Environmental Services LLC Top agencies Army (Department of the Army)	$3,607,874	0.2%	Rank history: not on the FY2021–FY2022 lists, #40 in FY2023, #43 in FY2024 and #35 in FY2025; down 38 since Jul 2024–Jun 2025.
73	Bay West LLC Top agencies Army (Department of the Army) DOJ (Department of Justice)	$3,540,018	0.2%	Rank history: not on the FY2021–FY2024 lists and #91 in FY2025; new, not ranked in Jul 2024–Jun 2025.
74	PB Environmental General Partnership Top agencies Army (Department of the Army)	$3,488,796	0.2%	Rank history: not on the FY2021–FY2024 lists and #71 in FY2025; new, not ranked in Jul 2024–Jun 2025.
75	Heliotech Top agencies EPA (Environmental Protection Agency)	$3,256,383	0.2%	Rank history: not on the FY2021–FY2023 lists, #84 in FY2024 and not on the FY2025 list; up 17 since Jul 2024–Jun 2025.
76	JFL-WCS Partners LLC Through Waste Control Specialists LLC Top agencies Army (Department of the Army)	$3,224,434	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
77	Del Mar-Trevet-Jv LLC Top agencies Navy (Department of the Navy)	$3,223,608	0.2%	Rank history: not on the FY2021–FY2024 lists and #81 in FY2025; up 43 since Jul 2024–Jun 2025.
78	Cherokee Federal Solutions, L.L.C. Top agencies Army (Department of the Army)	$3,154,242	0.2%	Rank history: not on the FY2021–FY2024 lists and #75 in FY2025; new, not ranked in Jul 2024–Jun 2025.
79	Dawson Solutions LLC Top agencies Army (Department of the Army)	$3,079,509	0.1%	Rank history: not on the FY2021–FY2023 lists, #25 in FY2024 and #83 in FY2025; down 61 since Jul 2024–Jun 2025.
80	Ahtna Solutions, LLC Top agencies Army (Department of the Army) DOT (Department of Transportation)	$2,939,311	0.1%	Rank history: not on the FY2021–FY2022 lists, #39 in FY2023, #56 in FY2024 and #43 in FY2025; down 42 since Jul 2024–Jun 2025.
81	Clean Harbors Inc. Through Clean Harbors Environmental Services Inc. Top agencies Navy (Department of the Navy) USDA (Department of Agriculture) VA (Department of Veterans Affairs)	$2,918,871	0.1%	Rank history: not on the FY2021–FY2023 lists, #75 in FY2024 and #39 in FY2025; down 50 since Jul 2024–Jun 2025.
82	Environmental Compliance Consultants, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) DOI (Department of the Interior)	$2,861,857	0.1%	Rank history: #43 in FY2021, #42 in FY2022, #48 in FY2023, #54 in FY2024 and #76 in FY2025; down 32 since Jul 2024–Jun 2025.
83	Eastern Shawnee Professional Services, LLC Top agencies DOI (Department of the Interior)	$2,853,025	0.1%	Rank history: not on the FY2021–FY2025 lists; up 167 since Jul 2024–Jun 2025.
84	Nobis Engineering, Inc. Top agencies EPA (Environmental Protection Agency)	$2,796,439	0.1%	Rank history: #38 in FY2021, #24 in FY2022, #87 in FY2023, #30 in FY2024 and #93 in FY2025; down 51 since Jul 2024–Jun 2025.
85	TDX Power Services LLC Through Bering Sea Eccotech, LLC Top agencies Navy (Department of the Navy)	$2,783,416	0.1%	Rank history: not on the FY2021–FY2023 lists, #71 in FY2024 and #67 in FY2025; down 21 since Jul 2024–Jun 2025.
86	R Ward & Associates Inc. Top agencies Army (Department of the Army)	$2,762,802	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
87	Neie Medical Waste Services, LLC Top agencies VA (Department of Veterans Affairs)	$2,756,415	0.1%	Rank history: not on the FY2021–FY2025 lists; up 54 since Jul 2024–Jun 2025.
88	Brice Solutions, LLC Top agencies DOT (Department of Transportation)	$2,725,371	0.1%	Rank history: not on the FY2021–FY2023 lists, #32 in FY2024 and #69 in FY2025; down 10 since Jul 2024–Jun 2025.
89	Paragon-Jacobs Joint Venture, LLC Top agencies EPA (Environmental Protection Agency) Army (Department of the Army)	$2,649,368	0.1%	Rank history: #44 in FY2021, #34 in FY2022, #84 in FY2023, not on the FY2024 list and #77 in FY2025; up 66 since Jul 2024–Jun 2025.
90	Engineering/Remediation Resources Group Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) DOI (Department of the Interior)	$2,603,623	0.1%	Rank history: #73 in FY2021, #35 in FY2022, #97 in FY2023, #42 in FY2024 and #73 in FY2025; down 30 since Jul 2024–Jun 2025.
91	Oneida Total Integrated Enterprises LLC Top agencies DLA (Defense Logistics Agency) DOI (Department of the Interior)	$2,574,759	0.1%	Rank history: not on the FY2021 list, #80 in FY2022, not on the FY2023 list, #96 in FY2024 and #88 in FY2025; up 22 since Jul 2024–Jun 2025.
92	Aes-Esfs JV I LLC Top agencies Navy (Department of the Navy)	$2,504,337	0.1%	Rank history: not on the FY2021–FY2025 lists; up 88 since Jul 2024–Jun 2025.
93	Sea-Tech Advanced Restoration Solutions Top agencies Army (Department of the Army)	$2,500,000	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
94	Ciri Development Corporation Through North Wind Resource Consulting LLC Top agencies Army (Department of the Army)	$2,461,805	0.1%	Rank history: not on the FY2021–FY2022 lists, #70 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
95	Mellor Engineering Inc Top agencies Army (Department of the Army)	$2,385,805	0.1%	Rank history: not on the FY2021–FY2024 lists and #90 in FY2025; up 7 since Jul 2024–Jun 2025.
96	CTL Environmental LLC Top agencies Army (Department of the Army)	$2,345,281	0.1%	Rank history: #81 in FY2021, #97 in FY2022, #42 in FY2023 and not on the FY2024–FY2025 lists; up 16 since Jul 2024–Jun 2025.
97	Bes-Lata JV, LLC Top agencies USAF (Department of the Air Force)	$2,290,180	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
98	Versar-Arcadis A Joint Venture Top agencies Army (Department of the Army)	$2,217,572	0.1%	Rank history: #79 in FY2021, #36 in FY2022, #91 in FY2023 and not on the FY2024–FY2025 lists; up 7 since Jul 2024–Jun 2025.
99	AGN JV LLC Top agencies Army (Department of the Army)	$2,215,671	0.1%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2023, not on the FY2024 list and #72 in FY2025; down 16 since Jul 2024–Jun 2025.
100	Nakupuna Consulting LLC Top agencies Army (Department of the Army)	$2,203,547	0.1%	Rank history: not on the FY2021–FY2024 lists and #70 in FY2025; down 26 since Jul 2024–Jun 2025.

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100 of 658 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 $2.06 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 PSC F108 contractors in Jul 2025–Jun 2026?

1. Bechtel Parsons Blue Grass, A Joint Venture ($110M), 2. Environmental Restoration LLC ($108M), 3. North Wind Portage, Inc. ($92M), 4. Kemron Environmental Services Inc. ($81.1M), 5. Hydrogeologic, Inc. ($81M), 6. Amentum Holdings, Inc. ($71.1M), 7. Bechtel Corp ($68.5M), 8. EA Engineering Science and Technology Inc. PBC ($66.3M), 9. Tehama Technical Services, LLC ($52.7M), 10. Enviro-Fix Solutions LLC ($49.7M).

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