Top 100 Contractors in PSC F: Natural Resources Management, FY2022

Name: Top 100 Contractors in PSC F: Natural Resources Management, FY2022
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2021 – Sep 30, 2022 Code page on GovTribe

The top 10 won 31% of FY2022 PSC F contract dollars

Contract obligations: $6,495,537,949 Net of deobligations, by contracts coded PSC F or a code under it
Contractors: 4,934 Parent companies with an obligation
Largest contractor: Bechtel Corp $786 million, 11.2% of obligations
Data as of: Oct 14, 2026

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

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Bechtel Corp 2 awardees, including Bechtel National, Inc. and Bechtel Parsons Blue Grass, A Joint Venture Top agencies Army (Department of the Army)	$785,708,753	11.2%	Rank history: #2 in FY2021, #1 in FY2023, #2 in FY2024 and #4 in FY2025; up 1 since FY2021.
2	AECOM 10 awardees, including Nuclear Waste Partnership LLC, Ucor LLC and AECOM Technical Services, Inc. Top agencies DOE (Department of Energy) EPA (Environmental Protection Agency) Army (Department of the Army)	$583,491,338	8.3%	Rank history: #1 in FY2021, #11 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2021.
3	EA Engineering, Science, and Technology, Inc., PBC Top agencies EPA (Environmental Protection Agency) Army (Department of the Army) USAF (Department of the Air Force)	$172,724,484	2.5%	Rank history: #10 in FY2021, #4 in FY2023 and not on the FY2024–FY2025 lists; up 7 since FY2021.
4	Environmental Restoration LLC Top agencies EPA (Environmental Protection Agency) DOJ (Department of Justice)	$135,080,577	1.9%	Rank history: #8 in FY2021, #8 in FY2023, #20 in FY2024 and #10 in FY2025; up 4 since FY2021.
5	Hydrogeologic, Inc. Top agencies Army (Department of the Army) EPA (Environmental Protection Agency) USAF (Department of the Air Force)	$105,144,879	1.5%	Rank history: #4 in FY2021, #5 in FY2023, #8 in FY2024 and #8 in FY2025; down 1 since FY2021.
6	Sevenson Environmental Services, Inc. Top agencies Army (Department of the Army) EPA (Environmental Protection Agency)	$84,664,720	1.2%	Rank history: #17 in FY2021, #14 in FY2023, #3 in FY2024 and #5 in FY2025; up 11 since FY2021.
7	J.f. Brennan Company, Inc. Top agencies EPA (Environmental Protection Agency)	$78,846,700	1.1%	Rank history: not on the FY2021 list, not on the FY2023 list, #48 in FY2024 and not on the FY2025 list; new.
8	Hanford Laboratory Management and Integration LLC Top agencies DOE (Department of Energy)	$76,900,323	1.1%	Rank history: #20 in FY2021, #10 in FY2023, #9 in FY2024 and #13 in FY2025; up 12 since FY2021.
9	Cook Inlet Region Inc. 11 awardees, including North Wind Portage, Inc., North Wind Resource Consulting LLC and North Wind Site Services LLC Top agencies DOE (Department of Energy) Army (Department of the Army) USDA (Department of Agriculture)	$66,539,585	1.0%	Rank history: #6 in FY2021, #18 in FY2023, #30 in FY2024 and not on the FY2025 list; down 3 since FY2021.
10	Ciri Development Corporation 3 awardees, including North Wind Site Services, LLC and North Wind Construction Services, LLC Top agencies Army (Department of the Army) DOI (Department of the Interior) DHS (Department of Homeland Security)	$66,379,352	0.9%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
11	Helicopter Transport Services, LLC Top agencies USDA (Department of Agriculture)	$62,456,129	0.9%	Rank history: not on the FY2021 list, #49 in FY2023, #56 in FY2024 and #11 in FY2025; new.
12	Perimeter Solutions LP Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$61,890,982	0.9%	Rank history: #5 in FY2021, #16 in FY2023 and not on the FY2024–FY2025 lists; down 7 since FY2021.
13	Tetra Tech, Inc. 14 awardees, including Ard, Inc. and Tetra TECH EC, Inc. Top agencies USAID (US Agency for International Development) EPA (Environmental Protection Agency) Army (Department of the Army)	$59,565,625	0.9%	Rank history: #16 in FY2021, #17 in FY2023, #17 in FY2024 and #14 in FY2025; up 3 since FY2021.
14	Westinghouse Electric Company LLC Through Westinghouse Government Services LLC Top agencies Army (Department of the Army)	$55,974,188	0.8%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
15	Cape Environmental Management Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$52,576,085	0.8%	Rank history: #19 in FY2021, #77 in FY2023, #77 in FY2024 and #65 in FY2025; up 4 since FY2021.
16	Oneida Nation 4 awardees, including Sustainment & Restoration Services, LLC, Oneida Total Integrated Enterprises LLC and OCH JV Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$47,608,062	0.7%	Rank history: #21 in FY2021, #21 in FY2023, #94 in FY2024 and not on the FY2025 list; up 5 since FY2021.
17	Aptim Federal Services LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) EPA (Environmental Protection Agency)	$46,995,498	0.7%	Rank history: #34 in FY2021, #6 in FY2023 and not on the FY2024–FY2025 lists; up 17 since FY2021.
18	Management & Engineering Technologies International Inc. Top agencies USDA (Department of Agriculture)	$45,195,267	0.6%	Rank history: #33 in FY2021, #76 in FY2023 and not on the FY2024–FY2025 lists; up 15 since FY2021.
19	Billings Flying Service LLC Top agencies USDA (Department of Agriculture)	$42,675,036	0.6%	Rank history: not on the FY2021 list, #39 in FY2023, #45 in FY2024 and #32 in FY2025; new.
20	Parsons Corporation Through Parsons Government Services Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$40,292,373	0.6%	Rank history: #64 in FY2021, #53 in FY2023, #73 in FY2024 and #47 in FY2025; up 44 since FY2021.
21	Navarro Research and Engineering, Inc. Top agencies DOE (Department of Energy) Army (Department of the Army) USAF (Department of the Air Force)	$40,085,280	0.6%	Rank history: #18 in FY2021, #24 in FY2023, #27 in FY2024 and #21 in FY2025; down 3 since FY2021.
22	Seres Engineering & Services LLC 4 awardees, including Seres-Arcadis SB JV2 LLC, Seres-Arcadis 8(A) JV2 LLC and Seres-Arcadis 8(A) JV, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) EPA (Environmental Protection Agency)	$38,991,052	0.6%	Rank history: #97 in FY2021 and not on the FY2023–FY2025 lists; up 75 since FY2021.
23	Amentum Services, Inc. Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$38,447,529	0.6%	Rank history: not on the FY2021 list, #33 in FY2023 and not on the FY2024–FY2025 lists; up 78 since FY2021.
24	North Wind Portage, Inc. Top agencies DOE (Department of Energy)	$38,005,427	0.5%	Rank history: not on the FY2021 list, not on the FY2023 list, #16 in FY2024 and #16 in FY2025; new.
25	Brice Engineering, LLC Top agencies Army (Department of the Army) DHS (Department of Homeland Security) DOI (Department of the Interior)	$36,760,447	0.5%	Rank history: #43 in FY2021, #12 in FY2023, #47 in FY2024 and #40 in FY2025; up 18 since FY2021.
26	Cabrera Services Inc. Top agencies Army (Department of the Army) EPA (Environmental Protection Agency)	$34,130,730	0.5%	Rank history: #50 in FY2021 and not on the FY2023–FY2025 lists; up 24 since FY2021.
27	Tenax Aerospace Holdings LLC Through Tenax Aerospace LLC Top agencies USDA (Department of Agriculture)	$33,028,666	0.5%	Rank history: not on the FY2021 list, #19 in FY2023 and not on the FY2024–FY2025 lists; new.
28	Camp Dresser & Mckee Inc. 2 awardees, including CDM Federal Programs Corporation Top agencies EPA (Environmental Protection Agency) DOI (Department of the Interior)	$30,247,503	0.4%	Rank history: #30 in FY2021 and not on the FY2023–FY2025 lists; up 2 since FY2021.
29	C M C, Inc. Top agencies EPA (Environmental Protection Agency)	$29,153,011	0.4%	Rank history: #70 in FY2021, #25 in FY2023, #41 in FY2024 and not on the FY2025 list; up 41 since FY2021.
30	Jacobs Engineering Group Inc. 6 awardees, including Ch2M Hill, Inc., Amentum Technology, Inc. and Jacobs Government Services Company Top agencies EPA (Environmental Protection Agency) Army (Department of the Army) DOI (Department of the Interior)	$28,287,667	0.4%	Rank history: #13 in FY2021, #3 in FY2023, #4 in FY2024 and not on the FY2025 list; down 17 since FY2021.
31	Hgl-Aptim JV LLC Top agencies Army (Department of the Army) EPA (Environmental Protection Agency) DLA (Defense Logistics Agency)	$28,257,967	0.4%	Rank history: #52 in FY2021, #58 in FY2023, #33 in FY2024 and #50 in FY2025; up 21 since FY2021.
32	Kemron Environmental Services, Inc. Top agencies EPA (Environmental Protection Agency) Army (Department of the Army) USAF (Department of the Air Force)	$27,332,035	0.4%	Rank history: #26 in FY2021, #42 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2021.
33	Helicopter Express LLC Top agencies USDA (Department of Agriculture)	$27,213,131	0.4%	Rank history: not on the FY2021 list, #38 in FY2023, #18 in FY2024 and #15 in FY2025; up 110 since FY2021.
34	Leidos Holdings, Inc. 3 awardees, including Leidos, Inc. Top agencies Army (Department of the Army) DHS (Department of Homeland Security) USAF (Department of the Air Force)	$26,863,526	0.4%	Rank history: #29 in FY2021, #31 in FY2023, #44 in FY2024 and #39 in FY2025; down 5 since FY2021.
35	BWX Technologies, Inc. Through Nuclear Fuel Services Inc. Top agencies DOE (Department of Energy)	$26,082,986	0.4%	Rank history: not on the FY2021 list, #7 in FY2023, #19 in FY2024 and #18 in FY2025; new.
36	Arctic Slope Regional Corporation 3 awardees, including Environmental Quality Management, Inc., Asrc Consulting & Environmental Services, LLC and EQM Services, LLC Top agencies Army (Department of the Army) EPA (Environmental Protection Agency) DOE (Department of Energy)	$25,921,216	0.4%	Rank history: #9 in FY2021, #9 in FY2023, #63 in FY2024 and #6 in FY2025; down 27 since FY2021.
37	Ch2M Hill, Inc. Top agencies EPA (Environmental Protection Agency) USAF (Department of the Air Force)	$24,784,043	0.4%	Rank history: not on the FY2021 list, not on the FY2023 list, #55 in FY2024 and #82 in FY2025; up 225 since FY2021.
38	Weston - Er Federal Services, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$24,758,210	0.4%	Rank history: #14 in FY2021 and not on the FY2023–FY2025 lists; down 24 since FY2021.
39	Croman Corp Top agencies USDA (Department of Agriculture)	$24,734,692	0.4%	Rank history: not on the FY2021 list, #48 in FY2023 and not on the FY2024–FY2025 lists; new.
40	Pika International, Inc. Top agencies Army (Department of the Army)	$24,242,703	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 69 since FY2021.
41	Siller Helicopters, LLC Top agencies USDA (Department of Agriculture)	$23,761,091	0.3%	Rank history: not on the FY2021 list, #46 in FY2023, #57 in FY2024 and #24 in FY2025; new.
42	Eastern Research Group Inc. Top agencies EPA (Environmental Protection Agency) DOI (Department of the Interior)	$23,405,631	0.3%	Rank history: #49 in FY2021, #28 in FY2023, #23 in FY2024 and #34 in FY2025; up 7 since FY2021.
43	Weston Solutions Holdings, Inc. 2 awardees, including Weston Solutions Inc. Top agencies EPA (Environmental Protection Agency) Army (Department of the Army)	$23,157,066	0.3%	Rank history: #38 in FY2021, #65 in FY2023, #46 in FY2024 and not on the FY2025 list; down 5 since FY2021.
44	Hdr, Inc. 4 awardees, including HDR Aptim LLC, HDR Environmental, Operations and Construction, Inc. and HDR Engineering, Inc. Top agencies EPA (Environmental Protection Agency) Navy (Department of the Navy) DHS (Department of Homeland Security)	$21,947,685	0.3%	Rank history: #44 in FY2021, #61 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2021.
45	Couvillion Group LLC Top agencies DHS (Department of Homeland Security)	$21,562,598	0.3%	Rank history: #61 in FY2021, #45 in FY2023, #66 in FY2024 and #49 in FY2025; up 16 since FY2021.
46	Construction Helicopters, LLC Through Helimax Aviation LLC Top agencies USDA (Department of Agriculture)	$21,533,629	0.3%	Rank history: not on the FY2021 list, #50 in FY2023 and not on the FY2024–FY2025 lists; new.
47	Kemron / Arrowhead JV, LLC Top agencies EPA (Environmental Protection Agency) Army (Department of the Army)	$21,475,023	0.3%	Rank history: not on the FY2021 list, #27 in FY2023 and not on the FY2024–FY2025 lists; up 61 since FY2021.
48	Columbia Helicopters, Inc. Top agencies USDA (Department of Agriculture)	$21,025,110	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
49	US Ecology, Inc. 8 awardees, including US Ecology Holdings, Inc., NRC Environmental Services Inc. and US Ecology Washington Inc. Top agencies Army (Department of the Army) DHS (Department of Homeland Security) Navy (Department of the Navy)	$20,600,989	0.3%	Rank history: not on the FY2021 list, #68 in FY2023 and not on the FY2024–FY2025 lists; up 245 since FY2021.
50	ICF International, Inc. Through ICF Incorporated, L.L.C. Top agencies DOI (Department of the Interior) EPA (Environmental Protection Agency) Commerce (Department of Commerce)	$19,923,550	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 141 since FY2021.
51	Environmental Chemical Corporation 5 awardees, including ECC Insight Philotechnics LLC, ECC Insight LLC and ECC Environmental LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) GSA (General Services Administration)	$19,742,872	0.3%	Rank history: #22 in FY2021, #26 in FY2023, #26 in FY2024 and #37 in FY2025; down 29 since FY2021.
52	Sol Solutions, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$19,596,546	0.3%	Rank history: #35 in FY2021, #57 in FY2023 and not on the FY2024–FY2025 lists; down 17 since FY2021.
53	Global Diving & Salvage, Inc. Top agencies DHS (Department of Homeland Security)	$17,933,340	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 69 since FY2021.
54	Neptune Aviation Services, Inc. Top agencies USDA (Department of Agriculture)	$17,672,972	0.3%	Rank history: #73 in FY2021, #69 in FY2023, #35 in FY2024 and #33 in FY2025; up 19 since FY2021.
55	10 Tanker Air Carrier, LLC Top agencies USDA (Department of Agriculture)	$17,462,246	0.2%	Rank history: not on the FY2021 list, #41 in FY2023 and not on the FY2024–FY2025 lists; up 104 since FY2021.
56	F & L Environmental LLC Top agencies USDA (Department of Agriculture)	$17,346,898	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
57	The Source Group, Inc. Top agencies DLA (Defense Logistics Agency)	$16,757,626	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 49 since FY2021.
58	Natives of Kodiak, Incorporated 4 awardees, including Environmental Assessment Services, LLC, Koman Government Solutions LLC and Trinity Analysis and Development Corp. Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$16,578,985	0.2%	Rank history: #56 in FY2021, #64 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2021.
59	Skeo Solutions, Inc. Top agencies EPA (Environmental Protection Agency)	$16,557,431	0.2%	Rank history: not on the FY2021 list, #81 in FY2023, #83 in FY2024 and not on the FY2025 list; up 161 since FY2021.
60	Aero Spray Inc Top agencies DOI (Department of the Interior)	$16,222,362	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
61	Fluor Corporation Through Fluor Idaho LLC Top agencies DOE (Department of Energy)	$15,637,914	0.2%	Rank history: #3 in FY2021 and not on the FY2023–FY2025 lists; down 58 since FY2021.
62	Nuclear Waste Partnership LLC Top agencies DOE (Department of Energy)	$15,466,345	0.2%	Rank history: #12 in FY2021 and not on the FY2023–FY2025 lists; down 50 since FY2021.
63	Calista Corp 2 awardees, including Brice Environmental Services Corporation Top agencies Army (Department of the Army) DOT (Department of Transportation)	$15,226,472	0.2%	Rank history: #48 in FY2021 and not on the FY2023–FY2025 lists; down 15 since FY2021.
64	Grayback Forestry, Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$15,202,950	0.2%	Rank history: not on the FY2021 list, #59 in FY2023 and not on the FY2024–FY2025 lists; new.
65	Itsi Gilbane Japan G.K. 2 awardees, including Gilbane Federal and Ges-Aecom JV Top agencies Navy (Department of the Navy) EPA (Environmental Protection Agency)	$14,988,635	0.2%	Rank history: #42 in FY2021 and not on the FY2023–FY2025 lists; down 23 since FY2021.
66	BTP Services, LLC Top agencies DOE (Department of Energy)	$14,783,022	0.2%	Rank history: #57 in FY2021 and not on the FY2023–FY2025 lists; down 9 since FY2021.
67	Summitt Forests, Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$14,578,073	0.2%	Rank history: #88 in FY2021, #40 in FY2023 and not on the FY2024–FY2025 lists; up 21 since FY2021.
68	Firestorm Wildland Fire Suppression, Inc. Top agencies USDA (Department of Agriculture)	$14,427,729	0.2%	Rank history: not on the FY2021 list, #85 in FY2023, #74 in FY2024 and #63 in FY2025; new.
69	Coulson Aviation (Usa), Inc. Top agencies USDA (Department of Agriculture)	$14,284,300	0.2%	Rank history: not on the FY2021 list, #78 in FY2023, #31 in FY2024 and #31 in FY2025; up 280 since FY2021.
70	Nobis Engineering, Inc. Top agencies EPA (Environmental Protection Agency) Army (Department of the Army)	$14,162,364	0.2%	Rank history: #71 in FY2021, not on the FY2023 list, #60 in FY2024 and not on the FY2025 list; up 1 since FY2021.
71	Thunder MTN Catering Inc. Top agencies USDA (Department of Agriculture)	$14,140,473	0.2%	Rank history: #77 in FY2021, not on the FY2023–FY2024 lists and #81 in FY2025; up 6 since FY2021.
72	G E Forestry, Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$13,955,294	0.2%	Rank history: #84 in FY2021, #87 in FY2023, #95 in FY2024 and not on the FY2025 list; up 12 since FY2021.
73	Engineering / Remediation Resources Group, Inc. 4 awardees Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$13,829,217	0.2%	Rank history: not on the FY2021 list, #98 in FY2023 and not on the FY2024–FY2025 lists; up 101 since FY2021.
74	Imperial Forestry, Incorporated Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$13,723,191	0.2%	Rank history: #79 in FY2021, #63 in FY2023, #85 in FY2024 and #99 in FY2025; up 5 since FY2021.
75	Leisnoi Diversified Services, LLC Top agencies EPA (Environmental Protection Agency) Army (Department of the Army)	$13,600,695	0.2%	Rank history: #75 in FY2021, not on the FY2023 list, #71 in FY2024 and not on the FY2025 list; unchanged since FY2021.
76	Weeks Marine Inc. 2 awardees Top agencies Commerce (Department of Commerce)	$13,596,335	0.2%	Rank history: #7 in FY2021, #70 in FY2023 and not on the FY2024–FY2025 lists; down 69 since FY2021.
77	Energysolutions LLC 2 awardees, including Energysolutions Services, Inc. Top agencies Navy (Department of the Navy)	$13,168,723	0.2%	Rank history: #83 in FY2021 and not on the FY2023–FY2025 lists; up 6 since FY2021.
78	ARS Aleut Remediation LLC Through Aleut Remediation LLC Top agencies Army (Department of the Army)	$13,046,293	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
79	Incident Catering Services, LLC Top agencies USDA (Department of Agriculture)	$12,893,694	0.2%	Rank history: #93 in FY2021 and not on the FY2023–FY2025 lists; up 14 since FY2021.
80	Oregon State of 8 awardees, including State of Oregon Department of Fish and Wildlife, Pacific States Marine Fisheries Commission and Oregon Dept of Agriculture Top agencies Army (Department of the Army) DOI (Department of the Interior) Commerce (Department of Commerce)	$12,873,802	0.2%	Rank history: #63 in FY2021, #55 in FY2023 and not on the FY2024–FY2025 lists; down 17 since FY2021.
81	Ahtna, Incorporated 4 awardees, including Ahtna Global LLC, Ahtna Environmental, Inc. and Ahtna Engineering Services, LLC Top agencies Army (Department of the Army) DOT (Department of Transportation) DOE (Department of Energy)	$12,743,677	0.2%	Rank history: #32 in FY2021, #62 in FY2023 and not on the FY2024–FY2025 lists; down 49 since FY2021.
82	Miller Timber Services, Inc. Top agencies USDA (Department of Agriculture)	$12,334,221	0.2%	Rank history: not on the FY2021 list, not on the FY2023–FY2024 lists and #77 in FY2025; up 66 since FY2021.
83	Hgl-Aptim Applied Science and Technology JV, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$12,081,439	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 122 since FY2021.
84	Heliqwest International Inc. Top agencies USDA (Department of Agriculture)	$11,896,603	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 123 since FY2021.
85	Four Rivers Nuclear Partnership LLC Top agencies DOE (Department of Energy)	$11,873,151	0.2%	Rank history: #81 in FY2021, #54 in FY2023 and not on the FY2024–FY2025 lists; down 4 since FY2021.
86	Pacific Oasis Inc. Top agencies USDA (Department of Agriculture)	$11,870,028	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
87	Cutting Edge Forestry, Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$11,539,175	0.2%	Rank history: #95 in FY2021 and not on the FY2023–FY2025 lists; up 8 since FY2021.
88	Fpm-Aecom JV1 Top agencies Army (Department of the Army)	$11,366,933	0.2%	Rank history: not on the FY2021 list, #20 in FY2023, #50 in FY2024 and not on the FY2025 list; new.
89	Delta Land Services LLC Top agencies Army (Department of the Army)	$11,206,570	0.2%	Rank history: #28 in FY2021 and not on the FY2023–FY2025 lists; down 61 since FY2021.
90	Paragon Professional Services LLC Top agencies DOE (Department of Energy) Army (Department of the Army)	$11,141,113	0.2%	Rank history: #76 in FY2021, #32 in FY2023, #38 in FY2024 and #29 in FY2025; down 14 since FY2021.
91	R & G Food Services Inc. Top agencies USDA (Department of Agriculture)	$11,136,252	0.2%	Rank history: #58 in FY2021 and not on the FY2023–FY2025 lists; down 33 since FY2021.
92	Patrick Environmental Inc. Top agencies USDA (Department of Agriculture)	$10,807,468	0.2%	Rank history: not on the FY2021 list, #80 in FY2023, #69 in FY2024 and #51 in FY2025; new.
93	Sweat US LLC Top agencies USDA (Department of Agriculture) DOI (Department of the Interior) USAF (Department of the Air Force)	$10,581,155	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 11 since FY2021.
94	The Solution Foundry, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$10,550,292	0.2%	Rank history: #90 in FY2021, not on the FY2023–FY2024 lists and #88 in FY2025; down 4 since FY2021.
95	Research Triangle Institute Top agencies EPA (Environmental Protection Agency) Commerce (Department of Commerce)	$10,491,408	0.2%	Rank history: not on the FY2021 list, #83 in FY2023, #97 in FY2024 and not on the FY2025 list; up 43 since FY2021.
96	Native Hawaiian Community Development Corporation 3 awardees, including GSI North America Inc. and GSI Pacific Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) EPA (Environmental Protection Agency)	$10,359,234	0.1%	Rank history: not on the FY2021 list, #73 in FY2023 and not on the FY2024–FY2025 lists; new.
97	EQ & CH Remediation Top agencies EPA (Environmental Protection Agency)	$10,322,810	0.1%	Rank history: #67 in FY2021, #93 in FY2023, #37 in FY2024 and not on the FY2025 list; down 30 since FY2021.
98	Waste Control Specialists LLC Top agencies DOE (Department of Energy)	$9,606,511	0.1%	Rank history: #65 in FY2021 and not on the FY2023–FY2025 lists; down 33 since FY2021.
99	Huntington Ingalls Industries, Inc. Through Newport News Nuclear Bwxt-Los Alamos LLC Top agencies DOE (Department of Energy)	$9,469,253	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 30 since FY2021.
100	Brainerd Helicopters, Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$9,358,666	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 395 since FY2021.

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100 of 4,934 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC F

Code	Net obligations	Largest contractor
F9 Natural Resources – Other Services	$2,224,996,796	AECOM
F1 Environmental Systems Protection	$2,217,169,420	Bechtel Corp
F0 Natural Resource Conservation Services	$2,053,371,733	Helicopter Transport Services, LLC

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 $6.99 billion obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Fiscal year 2022 ran Oct 1, 2021 – Sep 30, 2022. 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 FY2021. "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 FY2021 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 PSC F contractors in FY2022?

1. Bechtel Corp ($786M), 2. AECOM ($583M), 3. EA Engineering, Science, and Technology, Inc., PBC ($173M), 4. Environmental Restoration LLC ($135M), 5. Hydrogeologic, Inc. ($105M), 6. Sevenson Environmental Services, Inc. ($84.7M), 7. J.f. Brennan Company, Inc. ($78.8M), 8. Hanford Laboratory Management and Integration LLC ($76.9M), 9. Cook Inlet Region Inc. ($66.5M), 10. Ciri Development Corporation ($66.4M).

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