Top 100 Contractors in NAICS 54162: Environmental Consulting Services, FY2022

Name: Top 100 Contractors in NAICS 54162: Environmental Consulting Services, FY2022
Creator: GovTribe

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

The top 10 won 29% of FY2022 NAICS 54162 contract dollars

Contract obligations: $1,133,429,010 Net of deobligations, by contracts coded NAICS 54162 or a code under it
Contractors: 1,036 Parent companies with an obligation
Largest contractor: Tetra Tech, Inc. $82.9 million, 6.8% 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	Tetra Tech, Inc. 14 awardees Top agencies EPA (Environmental Protection Agency) NASA (National Aeronautics and Space Administration) DOE (Department of Energy)	$82,944,355	6.8%	Rank history: #1 in FY2021, #1 in FY2023, #2 in FY2024 and #1 in FY2025; unchanged since FY2021.
2	Eastern Research Group Inc. Top agencies EPA (Environmental Protection Agency) DOL (Department of Labor) HHS (Department of Health and Human Services)	$50,645,613	4.1%	Rank history: #3 in FY2021, #2 in FY2023, #1 in FY2024 and #3 in FY2025; up 1 since FY2021.
3	Boston Government Services, LLC Top agencies DOE (Department of Energy)	$45,307,409	3.7%	Rank history: #2 in FY2021, #5 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2021.
4	Project Enhancement Corporation Top agencies DOE (Department of Energy) DOL (Department of Labor)	$38,632,661	3.1%	Rank history: #4 in FY2021, #3 in FY2023, #4 in FY2024 and #4 in FY2025; unchanged since FY2021.
5	Environmental Incentives, Inc. Top agencies USAID (US Agency for International Development)	$38,568,991	3.1%	Rank history: #5 in FY2021, #7 in FY2023, #11 in FY2024 and #34 in FY2025; unchanged since FY2021.
6	Weston Solutions Holdings, Inc. 4 awardees, including Weston Solutions Inc. Top agencies EPA (Environmental Protection Agency) DOT (Department of Transportation)	$33,636,830	2.7%	Rank history: #6 in FY2021, #6 in FY2023, #6 in FY2024 and #2 in FY2025; unchanged since FY2021.
7	ICF International, Inc. 2 awardees, including ICF Incorporated, L.L.C. Top agencies EPA (Environmental Protection Agency)	$19,182,582	1.6%	Rank history: #8 in FY2021, #13 in FY2023, #19 in FY2024 and not on the FY2025 list; up 1 since FY2021.
8	Sol Solutions, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$18,847,212	1.5%	Rank history: #7 in FY2021, #12 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2021.
9	Lynker Corporation Top agencies Commerce (Department of Commerce)	$17,178,647	1.4%	Rank history: #15 in FY2021, #8 in FY2023, #8 in FY2024 and #5 in FY2025; up 6 since FY2021.
10	Skeo Solutions, Inc. Top agencies EPA (Environmental Protection Agency)	$16,557,431	1.3%	Rank history: #70 in FY2021, #16 in FY2023, #14 in FY2024 and #57 in FY2025; up 60 since FY2021.
11	Consolidated Safety Services Incorporated Top agencies Commerce (Department of Commerce) HHS (Department of Health and Human Services) DOI (Department of the Interior)	$16,059,890	1.3%	Rank history: #14 in FY2021, #10 in FY2023, #10 in FY2024 and #22 in FY2025; up 3 since FY2021.
12	Environmental Management & Planning Solutions LLC 2 awardees Top agencies DOI (Department of the Interior) USDA (Department of Agriculture)	$15,650,186	1.3%	Rank history: #21 in FY2021, #11 in FY2023 and not on the FY2024–FY2025 lists; up 9 since FY2021.
13	BTP Services, LLC Top agencies DOE (Department of Energy)	$14,783,022	1.2%	Rank history: #13 in FY2021 and not on the FY2023–FY2025 lists; unchanged since FY2021.
14	The Solution Foundry, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$10,550,292	0.9%	Rank history: #24 in FY2021, #24 in FY2023, #18 in FY2024 and #14 in FY2025; up 10 since FY2021.
15	Research Triangle Institute Top agencies EPA (Environmental Protection Agency) USDA (Department of Agriculture)	$10,525,554	0.9%	Rank history: #12 in FY2021, #20 in FY2023, #12 in FY2024 and #40 in FY2025; down 3 since FY2021.
16	Gryphon Environmental, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) VA (Department of Veterans Affairs)	$10,298,611	0.8%	Rank history: #22 in FY2021, #19 in FY2023, #17 in FY2024 and #12 in FY2025; up 6 since FY2021.
17	The Cadmus Group LLC Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services) DOT (Department of Transportation)	$9,723,223	0.8%	Rank history: not on the FY2021 list, #4 in FY2023, #3 in FY2024 and #19 in FY2025; up 125 since FY2021.
18	Toeroek Associates, Inc. Top agencies EPA (Environmental Protection Agency)	$9,585,778	0.8%	Rank history: #56 in FY2021, #29 in FY2023, #87 in FY2024 and #84 in FY2025; up 38 since FY2021.
19	Umyuaq Consulting Group, LLC Top agencies Army (Department of the Army)	$9,528,710	0.8%	Rank history: #46 in FY2021, #48 in FY2023, #62 in FY2024 and not on the FY2025 list; up 27 since FY2021.
20	Aptim Federal Services LLC Top agencies EPA (Environmental Protection Agency) DOI (Department of the Interior)	$8,966,964	0.7%	Rank history: #29 in FY2021 and not on the FY2023–FY2025 lists; up 9 since FY2021.
21	ECO & Associates, Inc. Top agencies Army (Department of the Army) OSD (Office of the Secretary of Defense)	$8,821,025	0.7%	Rank history: #17 in FY2021, not on the FY2023–FY2024 lists and #73 in FY2025; down 4 since FY2021.
22	AECOM 4 awardees, including AECOM Technical Services, Inc., AECOM International Inc. and AECOM Italia S.P.A. Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army) Commerce (Department of Commerce)	$8,388,235	0.7%	Rank history: #20 in FY2021, #26 in FY2023, #31 in FY2024 and not on the FY2025 list; down 2 since FY2021.
23	SRC Inc. Top agencies EPA (Environmental Protection Agency)	$8,158,835	0.7%	Rank history: #23 in FY2021, #32 in FY2023, #29 in FY2024 and #75 in FY2025; unchanged since FY2021.
24	Great Lakes Environmental Center, Inc. Top agencies EPA (Environmental Protection Agency) Army (Department of the Army) DOI (Department of the Interior)	$8,140,571	0.7%	Rank history: #60 in FY2021, #23 in FY2023, #21 in FY2024 and #37 in FY2025; up 36 since FY2021.
25	Genwest Systems Inc. Top agencies Commerce (Department of Commerce)	$8,102,020	0.7%	Rank history: #25 in FY2021, #41 in FY2023, #95 in FY2024 and #43 in FY2025; unchanged since FY2021.
26	Jacobs Engineering Group Inc. 2 awardees, including Ch2M Hill, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$7,408,458	0.6%	Rank history: not on the FY2021 list, #28 in FY2023 and not on the FY2024–FY2025 lists; up 97 since FY2021.
27	Seres Engineering & Services LLC 2 awardees, including Seres-Arcadis 8(A) JV, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$7,326,384	0.6%	Rank history: #63 in FY2021, #65 in FY2023 and not on the FY2024–FY2025 lists; up 36 since FY2021.
28	WSP USA Solutions Inc. Top agencies DOE (Department of Energy) DOI (Department of the Interior) GSA (General Services Administration)	$7,212,773	0.6%	Rank history: #57 in FY2021, #30 in FY2023 and not on the FY2024–FY2025 lists; up 29 since FY2021.
29	Cook Inlet Region Inc. 6 awardees, including North Wind Resource Consulting LLC, North Wind Site Services LLC and OSC Technical Solutions, LLC Top agencies Army (Department of the Army) DOI (Department of the Interior) USDA (Department of Agriculture)	$6,766,069	0.6%	Rank history: #26 in FY2021 and not on the FY2023–FY2025 lists; down 3 since FY2021.
30	Weston-Techlaw JV LLC Top agencies EPA (Environmental Protection Agency)	$6,656,565	0.5%	Rank history: not on the FY2021 list, #14 in FY2023, #16 in FY2024 and #20 in FY2025; up 202 since FY2021.
31	Pb&A / CSS JV, Llc. Top agencies EPA (Environmental Protection Agency)	$6,427,248	0.5%	Rank history: not on the FY2021 list, #42 in FY2023 and not on the FY2024–FY2025 lists; new.
32	Applied Environmental, Inc. Top agencies WHS (DOD Washington Headquarters Service)	$6,281,952	0.5%	Rank history: #34 in FY2021 and not on the FY2023–FY2025 lists; up 2 since FY2021.
33	Environmental Research Group, L.L.C. Top agencies Army (Department of the Army) Navy (Department of the Navy) DHS (Department of Homeland Security)	$6,146,426	0.5%	Rank history: #35 in FY2021 and not on the FY2023–FY2025 lists; up 2 since FY2021.
34	ABT Global LLC 2 awardees Top agencies EPA (Environmental Protection Agency)	$5,768,058	0.5%	Rank history: #39 in FY2021, #50 in FY2023 and not on the FY2024–FY2025 lists; up 5 since FY2021.
35	Native Strategies, LLC Top agencies DOI (Department of the Interior)	$5,713,499	0.5%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
36	Oregon University System 2 awardees, including Portland State University and Oregon State University Top agencies DOI (Department of the Interior) Commerce (Department of Commerce)	$5,655,996	0.5%	Rank history: #33 in FY2021, #81 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2021.
37	Whitetail Environmental, LLC Top agencies Army (Department of the Army) DHA (Defense Health Agency)	$5,440,776	0.4%	Rank history: #91 in FY2021, #40 in FY2023, #40 in FY2024 and #99 in FY2025; up 54 since FY2021.
38	Native Hawaiian Community Development Corporation Through GSI North America Inc. Top agencies Army (Department of the Army) EPA (Environmental Protection Agency) USAF (Department of the Air Force)	$5,436,390	0.4%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
39	Mabbett & Associates, Inc. Top agencies VA (Department of Veterans Affairs) EPA (Environmental Protection Agency) GSA (General Services Administration)	$5,364,562	0.4%	Rank history: #37 in FY2021, #39 in FY2023, #27 in FY2024 and #50 in FY2025; down 2 since FY2021.
40	Hsg, LLC Top agencies NASA (National Aeronautics and Space Administration) DOI (Department of the Interior) USAF (Department of the Air Force)	$5,164,881	0.4%	Rank history: #50 in FY2021, #53 in FY2023, #36 in FY2024 and #21 in FY2025; up 10 since FY2021.
41	Marstel-Day, LLC Top agencies Navy (Department of the Navy) DOI (Department of the Interior) USAF (Department of the Air Force)	$5,087,572	0.4%	Rank history: not on the FY2021 list, #17 in FY2023, #20 in FY2024 and #23 in FY2025; up 276 since FY2021.
42	Leidos Holdings, Inc. 2 awardees, including Leidos, Inc. Top agencies DHS (Department of Homeland Security)	$5,056,260	0.4%	Rank history: #18 in FY2021 and not on the FY2023–FY2025 lists; down 24 since FY2021.
43	Independent Strategic Management Solutions Inc. Top agencies DOE (Department of Energy)	$5,048,948	0.4%	Rank history: #51 in FY2021 and not on the FY2023–FY2025 lists; up 8 since FY2021.
44	Southwest Research Institute 2 awardees, including Signature Science LLC Top agencies DFAS (Defense Finance and Accounting Service) DHS (Department of Homeland Security) Army (Department of the Army)	$5,023,425	0.4%	Rank history: #36 in FY2021 and not on the FY2023–FY2025 lists; down 8 since FY2021.
45	Pi2E JV LLP Top agencies HHS (Department of Health and Human Services)	$4,990,261	0.4%	Rank history: #89 in FY2021, #91 in FY2023 and not on the FY2024–FY2025 lists; up 44 since FY2021.
46	Industrial Economics Inc. Top agencies EPA (Environmental Protection Agency) DOI (Department of the Interior) USDA (Department of Agriculture)	$4,905,302	0.4%	Rank history: #93 in FY2021 and not on the FY2023–FY2025 lists; up 47 since FY2021.
47	S C & A Inc. 2 awardees, including EC / R Incorporated Top agencies EPA (Environmental Protection Agency) DOE (Department of Energy) HHS (Department of Health and Human Services)	$4,815,228	0.4%	Rank history: #48 in FY2021, #33 in FY2023, #5 in FY2024 and #6 in FY2025; up 1 since FY2021.
48	Bluestone Environmental Group, Inc. Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army) USAF (Department of the Air Force)	$4,787,285	0.4%	Rank history: #86 in FY2021, #36 in FY2023, #24 in FY2024 and #16 in FY2025; up 38 since FY2021.
49	Aerostar Environmental and Construction LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$4,778,857	0.4%	Rank history: not on the FY2021 list, #35 in FY2023, #37 in FY2024 and #31 in FY2025; up 237 since FY2021.
50	Integrated Systems Solutions, Inc. Top agencies Commerce (Department of Commerce)	$4,622,021	0.4%	Rank history: #71 in FY2021, #75 in FY2023, #38 in FY2024 and #44 in FY2025; up 21 since FY2021.
51	Oneida Nation Through Sustainment & Restoration Services, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$4,551,329	0.4%	Rank history: #55 in FY2021, #95 in FY2023 and not on the FY2024–FY2025 lists; up 4 since FY2021.
52	Solv LLC Top agencies USDA (Department of Agriculture) DOJ (Department of Justice) GSA (General Services Administration)	$4,485,598	0.4%	Rank history: #68 in FY2021, #9 in FY2023, #55 in FY2024 and not on the FY2025 list; up 16 since FY2021.
53	Versar Inc. 2 awardees Top agencies Army (Department of the Army) USAF (Department of the Air Force) EPA (Environmental Protection Agency)	$4,470,284	0.4%	Rank history: #10 in FY2021 and not on the FY2023–FY2025 lists; down 43 since FY2021.
54	D7, LLC 2 awardees Top agencies DHS (Department of Homeland Security) DFAS (Defense Finance and Accounting Service) Army (Department of the Army)	$4,404,701	0.4%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 276 since FY2021.
55	The NDN Sundance JV LLC Top agencies Army (Department of the Army)	$4,381,891	0.4%	Rank history: #64 in FY2021 and not on the FY2023–FY2025 lists; up 9 since FY2021.
56	Leisnoi-Kemron 8A JV, LLC Top agencies Army (Department of the Army)	$4,145,512	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 185 since FY2021.
57	The Great Basin Institute Top agencies DOI (Department of the Interior)	$4,028,597	0.3%	Rank history: #94 in FY2021, #86 in FY2023 and not on the FY2024–FY2025 lists; up 37 since FY2021.
58	Specpro Professional Services, LLC Top agencies Army (Department of the Army) DOI (Department of the Interior)	$4,027,447	0.3%	Rank history: #61 in FY2021, #72 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2021.
59	Renova-Sovereign Joint Venture Top agencies Army (Department of the Army)	$3,991,505	0.3%	Rank history: #45 in FY2021, not on the FY2023–FY2024 lists and #92 in FY2025; down 14 since FY2021.
60	Paleowest LLC Top agencies DOI (Department of the Interior) Army (Department of the Army) HHS (Department of Health and Human Services)	$3,983,938	0.3%	Rank history: #41 in FY2021, not on the FY2023 list, #74 in FY2024 and #72 in FY2025; down 19 since FY2021.
61	Association of Consultants and Engineers Top agencies Navy (Department of the Navy)	$3,903,140	0.3%	Rank history: #44 in FY2021, #31 in FY2023, #65 in FY2024 and #70 in FY2025; down 17 since FY2021.
62	Wood Environment & Infrastructure Solutions Inc. 2 awardees, including WSP USA Environment & Infrastructure Inc. and WSP E&Is GMBH Top agencies EPA (Environmental Protection Agency) Army (Department of the Army) DOI (Department of the Interior)	$3,896,716	0.3%	Rank history: #11 in FY2021, #25 in FY2023, #78 in FY2024 and not on the FY2025 list; down 51 since FY2021.
63	Ocean Associates Inc. Top agencies Commerce (Department of Commerce) DOI (Department of the Interior)	$3,868,873	0.3%	Rank history: #79 in FY2021, #82 in FY2023, #34 in FY2024 and #47 in FY2025; up 16 since FY2021.
64	Auxilio Management Services Top agencies Army (Department of the Army) Commerce (Department of Commerce) USAF (Department of the Air Force)	$3,824,877	0.3%	Rank history: #58 in FY2021 and not on the FY2023–FY2025 lists; down 6 since FY2021.
65	PG Environmental, LLC Top agencies DOI (Department of the Interior) EPA (Environmental Protection Agency) DOJ (Department of Justice)	$3,788,742	0.3%	Rank history: #43 in FY2021, #44 in FY2023 and not on the FY2024–FY2025 lists; down 22 since FY2021.
66	DMG Information Inc Through The Sanborn Map Company, Inc. Top agencies USDA (Department of Agriculture)	$3,697,064	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
67	Sundance EA Associates II Top agencies Navy (Department of the Navy) Army (Department of the Army)	$3,636,468	0.3%	Rank history: not on the FY2021 list, #51 in FY2023 and not on the FY2024–FY2025 lists; up 34 since FY2021.
68	Ecosphere Environmental Services Inc. Top agencies USDA (Department of Agriculture)	$3,619,106	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 306 since FY2021.
69	SRS Battelle JV, LLC Top agencies Army (Department of the Army)	$3,544,326	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
70	Horsley Witten Group, Inc. Top agencies EPA (Environmental Protection Agency) Commerce (Department of Commerce)	$3,497,642	0.3%	Rank history: #40 in FY2021, #61 in FY2023, #66 in FY2024 and not on the FY2025 list; down 30 since FY2021.
71	Straughan Environmental, Inc. Top agencies NASA (National Aeronautics and Space Administration) USDA (Department of Agriculture) HHS (Department of Health and Human Services)	$3,497,236	0.3%	Rank history: #62 in FY2021, #59 in FY2023, #32 in FY2024 and #64 in FY2025; down 9 since FY2021.
72	C.j. Seto Support Services, LLC Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy) VA (Department of Veterans Affairs)	$3,479,481	0.3%	Rank history: #66 in FY2021, #88 in FY2023, #59 in FY2024 and not on the FY2025 list; down 6 since FY2021.
73	Ageiss Inc. Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$3,478,087	0.3%	Rank history: #83 in FY2021 and not on the FY2023–FY2025 lists; up 10 since FY2021.
74	The Clark Group. Llc Top agencies USDA (Department of Agriculture) DOJ (Department of Justice) VA (Department of Veterans Affairs)	$3,438,534	0.3%	Rank history: not on the FY2021 list, not on the FY2023 list, #48 in FY2024 and not on the FY2025 list; up 86 since FY2021.
75	Arctic Slope Regional Corporation 2 awardees, including Environmental Quality Management, Inc. and EQM Services, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$3,379,228	0.3%	Rank history: #84 in FY2021, #47 in FY2023 and not on the FY2024–FY2025 lists; up 9 since FY2021.
76	S.s. Papadopulos & Associates, Inc. 2 awardees Top agencies GSA (General Services Administration) EPA (Environmental Protection Agency)	$3,340,704	0.3%	Rank history: #92 in FY2021 and not on the FY2023–FY2025 lists; up 16 since FY2021.
77	Natives of Kodiak, Incorporated Through Environmental Assessment Services, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$3,270,489	0.3%	Rank history: not on the FY2021 list, #63 in FY2023 and not on the FY2024–FY2025 lists; up 35 since FY2021.
78	Ati-Endyna JV, LLC Top agencies WHS (DOD Washington Headquarters Service)	$3,246,650	0.3%	Rank history: #75 in FY2021, #96 in FY2023, #79 in FY2024 and not on the FY2025 list; down 3 since FY2021.
79	Nakupuna Consulting LLC Top agencies USDA (Department of Agriculture)	$3,235,386	0.3%	Rank history: not on the FY2021 list, #57 in FY2023 and not on the FY2024–FY2025 lists; new.
80	Hikina 2 Komohana Consulting Inc. Top agencies DLA (Defense Logistics Agency)	$3,233,129	0.3%	Rank history: #82 in FY2021, #93 in FY2023, #93 in FY2024 and not on the FY2025 list; up 2 since FY2021.
81	TRC Companies, Inc. Through TRC Environmental Corporation Top agencies DOT (Department of Transportation) USDA (Department of Agriculture)	$3,230,163	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 25 since FY2021.
82	GRK Bhate JV, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$3,212,727	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
83	Sol-Ageiss LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$3,168,292	0.3%	Rank history: not on the FY2021 list, #76 in FY2023 and not on the FY2024–FY2025 lists; new.
84	Science Applications International Corporation Top agencies EPA (Environmental Protection Agency)	$3,155,012	0.3%	Rank history: #49 in FY2021, #56 in FY2023, #28 in FY2024 and #45 in FY2025; down 35 since FY2021.
85	LRS Federal LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DOJ (Department of Justice)	$3,143,774	0.3%	Rank history: #30 in FY2021, #27 in FY2023 and not on the FY2024–FY2025 lists; down 55 since FY2021.
86	Air Resource Specialists, Inc. Top agencies DOI (Department of the Interior) EPA (Environmental Protection Agency) USDA (Department of Agriculture)	$3,098,017	0.3%	Rank history: #81 in FY2021, #69 in FY2023, #86 in FY2024 and #98 in FY2025; down 5 since FY2021.
87	Earth Networks Inc. Top agencies Commerce (Department of Commerce)	$3,025,691	0.2%	Rank history: #77 in FY2021 and not on the FY2023–FY2025 lists; down 10 since FY2021.
88	Sc-B Consulting Incorporated Top agencies Army (Department of the Army)	$3,023,046	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
89	Sundance Consultants, LLC Top agencies DOI (Department of the Interior) Army (Department of the Army) USDA (Department of Agriculture)	$2,957,079	0.2%	Rank history: not on the FY2021 list, #21 in FY2023, #41 in FY2024 and #52 in FY2025; up 77 since FY2021.
90	Tepa, LLC 2 awardees, including Tehama ECS LLC and Tehama, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) USDA (Department of Agriculture)	$2,947,966	0.2%	Rank history: not on the FY2021 list, #43 in FY2023 and not on the FY2024–FY2025 lists; up 40 since FY2021.
91	Egc-Ageiss LLC Top agencies USAF (Department of the Air Force)	$2,919,157	0.2%	Rank history: #47 in FY2021 and not on the FY2023–FY2025 lists; down 44 since FY2021.
92	Clean Harbors Inc 2 awardees, including Clean Harbors Environmental Services Inc. and Safety-Kleen Systems, Inc. Top agencies Treasury (Department of the Treasury) VA (Department of Veterans Affairs) DOS (Department of State)	$2,828,141	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 33 since FY2021.
93	Rmec Environmental, LLC Top agencies Army (Department of the Army) GSA (General Services Administration)	$2,814,296	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
94	Management Solutions LLC Top agencies Army (Department of the Army)	$2,783,683	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 39 since FY2021.
95	Melwood Horticultural Training Center, Inc. Top agencies DOJ (Department of Justice)	$2,756,816	0.2%	Rank history: not on the FY2021 list, not on the FY2023–FY2024 lists and #85 in FY2025; new.
96	Environmental Management Support, Inc. Top agencies EPA (Environmental Protection Agency)	$2,719,716	0.2%	Rank history: #69 in FY2021, #77 in FY2023, #75 in FY2024 and #56 in FY2025; down 27 since FY2021.
97	Swift River Versar JV Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$2,713,981	0.2%	Rank history: #96 in FY2021 and not on the FY2023–FY2025 lists; down 1 since FY2021.
98	Earth Smart Environmental Solutions LLC Top agencies VA (Department of Veterans Affairs) USDA (Department of Agriculture)	$2,697,176	0.2%	Rank history: #100 in FY2021, not on the FY2023 list, #89 in FY2024 and #91 in FY2025; up 2 since FY2021.
99	Ardl Inc. Top agencies Army (Department of the Army) EPA (Environmental Protection Agency)	$2,691,223	0.2%	Rank history: #9 in FY2021, #46 in FY2023, not on the FY2024 list and #90 in FY2025; down 90 since FY2021.
100	SRA International Inc. Through General Dynamics Information Technology, Inc. Top agencies EPA (Environmental Protection Agency)	$2,650,541	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 169 since FY2021.

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100 of 1,036 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 54162

Code	Net obligations	Largest contractor
541620 Environmental Consulting Services	$1,133,429,010	Tetra Tech, 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 $1.23 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 NAICS 54162 contractors in FY2022?

1. Tetra Tech, Inc. ($82.9M), 2. Eastern Research Group Inc. ($50.6M), 3. Boston Government Services, LLC ($45.3M), 4. Project Enhancement Corporation ($38.6M), 5. Environmental Incentives, Inc. ($38.6M), 6. Weston Solutions Holdings, Inc. ($33.6M), 7. ICF International, Inc. ($19.2M), 8. Sol Solutions, LLC ($18.8M), 9. Lynker Corporation ($17.2M), 10. Skeo Solutions, Inc. ($16.6M).

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