Top 100 Contractors in PSC F115: Environmental Systems Protection – Environmental Consulting and Legal Support, FY2024

Name: Top 100 Contractors in PSC F115: Environmental Systems Protection – Environmental Consulting and Legal Support, FY2024
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2023 – Sep 30, 2024 Code page on GovTribe

The top 10 won 62% of FY2024 PSC F115 contract dollars

Contract obligations: $96,053,017 Net of deobligations, by contracts coded PSC F115
Contractors: 115 Parent companies with an obligation
Largest contractor: Eastern Research Group Inc. $33 million, 28.6% of obligations
Data as of: Oct 14, 2026

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

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Eastern Research Group Inc. Top agencies EPA (Environmental Protection Agency)	$33,040,583	28.6%	Rank history: #3 in FY2021, #2 in FY2022, #2 in FY2023 and #1 in FY2025; up 1 since FY2023.
2	Weston-Techlaw JV LLC Top agencies EPA (Environmental Protection Agency)	$13,293,219	11.5%	Rank history: #16 in FY2021, #3 in FY2022, #1 in FY2023 and #2 in FY2025; down 1 since FY2023.
3	Research Triangle Institute Top agencies EPA (Environmental Protection Agency)	$5,816,488	5.0%	Rank history: not on the FY2021–FY2022 lists, #4 in FY2023 and #3 in FY2025; up 1 since FY2023.
4	ABT Global LLC 2 awardees Top agencies EPA (Environmental Protection Agency)	$4,215,751	3.6%	Rank history: not on the FY2021–FY2022 lists, #27 in FY2023 and #7 in FY2025; up 23 since FY2023.
5	General Dynamics Corporation Through General Dynamics Information Technology, Inc. Top agencies EPA (Environmental Protection Agency)	$3,380,551	2.9%	Rank history: not on the FY2021 list, #19 in FY2022, #91 in FY2023 and #9 in FY2025; up 86 since FY2023.
6	S C & A Inc. Top agencies DOE (Department of Energy) EPA (Environmental Protection Agency)	$2,862,986	2.5%	Rank history: #26 in FY2021, #13 in FY2022, #7 in FY2023 and #14 in FY2025; up 1 since FY2023.
7	Avanti Corporation Top agencies EPA (Environmental Protection Agency)	$2,666,074	2.3%	Rank history: not on the FY2021 list, #66 in FY2022, #15 in FY2023 and #23 in FY2025; up 8 since FY2023.
8	Brice Engineering, LLC Top agencies Army (Department of the Army)	$2,456,865	2.1%	Rank history: #6 in FY2021, #11 in FY2022, #12 in FY2023 and not on the FY2025 list; up 4 since FY2023.
9	Oneida Total Integrated Enterprises LLC Top agencies USAF (Department of the Air Force)	$2,288,245	2.0%	Rank history: not on the FY2021–FY2023 lists and #11 in FY2025; new.
10	CDM Federal Programs Corporation Top agencies EPA (Environmental Protection Agency) DOI (Department of the Interior)	$1,960,232	1.7%	Rank history: not on the FY2021–FY2023 lists and #5 in FY2025; new.
11	Horsley Witten Group, Inc. Top agencies EPA (Environmental Protection Agency)	$1,871,795	1.6%	Rank history: #19 in FY2021, #37 in FY2022, #18 in FY2023 and #25 in FY2025; up 7 since FY2023.
12	CDM Smith Inc Through CDM Federal Programs Corporation Top agencies EPA (Environmental Protection Agency)	$1,857,282	1.6%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
13	Oneida Environmental, LLC Top agencies DOI (Department of the Interior)	$1,665,512	1.4%	Rank history: not on the FY2021–FY2023 lists and #22 in FY2025; new.
14	CCI Facility Support Services LLC Top agencies Army (Department of the Army)	$1,608,656	1.4%	Rank history: not on the FY2021 list, #16 in FY2022, #22 in FY2023 and #15 in FY2025; up 8 since FY2023.
15	Spatial Front Inc Top agencies Commerce (Department of Commerce)	$1,569,478	1.4%	Rank history: not on the FY2021–FY2022 lists, #16 in FY2023 and #10 in FY2025; up 1 since FY2023.
16	Censeo Consulting Group, Inc. Top agencies EPA (Environmental Protection Agency)	$1,526,367	1.3%	Rank history: not on the FY2021–FY2023 lists and #27 in FY2025; new.
17	AECOM Technical Services, Inc. Top agencies DHS (Department of Homeland Security) DOI (Department of the Interior) GSA (General Services Administration)	$1,274,569	1.1%	Rank history: not on the FY2021 list, #59 in FY2022, not on the FY2023 list and #32 in FY2025; returned.
18	Sustainment & Restoration Services, LLC Top agencies USAF (Department of the Air Force)	$1,206,157	1.0%	Rank history: not on the FY2021–FY2023 lists and #17 in FY2025; new.
19	Whitetail Environmental, LLC Top agencies DOI (Department of the Interior)	$1,203,078	1.0%	Rank history: #18 in FY2021, #24 in FY2022, #19 in FY2023 and #21 in FY2025; unchanged since FY2023.
20	Environmental Research Group LLC Top agencies WHS (DOD Washington Headquarters Service) Army (Department of the Army)	$980,860	0.8%	Rank history: #12 in FY2021, #18 in FY2022, #34 in FY2023 and #19 in FY2025; up 14 since FY2023.
21	Coterie Environmental LLC Top agencies Army (Department of the Army)	$964,222	0.8%	Rank history: not on the FY2021–FY2023 lists and #16 in FY2025; new.
22	SOL Solutions LLC Top agencies Army (Department of the Army)	$804,410	0.7%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
23	Engineering/Remediation Resources Group Inc. Top agencies USDA (Department of Agriculture)	$740,128	0.6%	Rank history: not on the FY2021–FY2023 lists and #24 in FY2025; new.
24	Capital Project Management, Inc. Top agencies Army (Department of the Army)	$734,093	0.6%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
25	Westland Resources Inc. Top agencies USDA (Department of Agriculture)	$636,622	0.6%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
26	Lynker Corporation Top agencies Commerce (Department of Commerce)	$626,404	0.5%	Rank history: not on the FY2021–FY2022 lists, #31 in FY2023 and #29 in FY2025; up 5 since FY2023.
27	Environmental Cost Management, Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$590,144	0.5%	Rank history: not on the FY2021 list, #78 in FY2022, #50 in FY2023 and #30 in FY2025; up 23 since FY2023.
28	Noreas Inc. Top agencies NASA (National Aeronautics and Space Administration)	$548,845	0.5%	Rank history: not on the FY2021–FY2022 lists, #30 in FY2023 and not on the FY2025 list; up 2 since FY2023.
29	Tetra Tech, Inc. Top agencies USDA (Department of Agriculture) EPA (Environmental Protection Agency)	$533,554	0.5%	Rank history: not on the FY2021 list, #21 in FY2022, #23 in FY2023 and #12 in FY2025; down 6 since FY2023.
30	ECO & Associates, Inc. Top agencies Army (Department of the Army)	$495,929	0.4%	Rank history: #25 in FY2021, #30 in FY2022, #29 in FY2023 and not on the FY2025 list; down 1 since FY2023.
31	Hsg, LLC Top agencies DOI (Department of the Interior) USDA (Department of Agriculture)	$490,679	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
32	SP Cramer & Associates Inc. Top agencies DOI (Department of the Interior)	$425,614	0.4%	Rank history: #29 in FY2021, #29 in FY2022, #36 in FY2023 and not on the FY2025 list; up 4 since FY2023.
33	Metropolitan Group, L.l.c Top agencies USDA (Department of Agriculture)	$399,419	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
34	Purdue Applied Research Institute, LLC Top agencies DOE (Department of Energy)	$373,700	0.3%	Rank history: not on the FY2021–FY2022 lists, #38 in FY2023 and #65 in FY2025; up 4 since FY2023.
35	The Cadmus Group LLC Top agencies EPA (Environmental Protection Agency)	$360,651	0.3%	Rank history: #45 in FY2021, #72 in FY2022, not on the FY2023 list and #6 in FY2025; returned.
36	Bb&E, Inc. Top agencies DOI (Department of the Interior)	$351,763	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
37	Dpra Incorporated Top agencies EPA (Environmental Protection Agency)	$338,447	0.3%	Rank history: #43 in FY2021, #39 in FY2022, #47 in FY2023 and #31 in FY2025; up 10 since FY2023.
38	Guidehouse Inc. Top agencies GSA (General Services Administration)	$299,551	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
39	Wood Environment & Infrastructure Solutions Inc. Through WSP USA Environment & Infrastructure Inc. Top agencies GSA (General Services Administration)	$295,009	0.3%	Rank history: #48 in FY2021, #52 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
40	Fed95 LLC Top agencies DOE (Department of Energy)	$293,261	0.3%	Rank history: not on the FY2021–FY2023 lists and #56 in FY2025; new.
41	Renova Environmental Company Top agencies Army (Department of the Army)	$282,825	0.2%	Rank history: not on the FY2021–FY2022 lists, #28 in FY2023 and not on the FY2025 list; down 13 since FY2023.
42	Potomac-Hudson Engineering Inc Top agencies GSA (General Services Administration)	$282,667	0.2%	Rank history: not on the FY2021–FY2022 lists, #55 in FY2023 and #20 in FY2025; up 13 since FY2023.
43	Marstel-Day LLC Top agencies Navy (Department of the Navy)	$236,244	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
44	Biosphere International Inc Top agencies VA (Department of Veterans Affairs)	$223,770	0.2%	Rank history: not on the FY2021–FY2022 lists, #63 in FY2023 and not on the FY2025 list; up 19 since FY2023.
45	Auxilio Management Services Top agencies Commerce (Department of Commerce)	$212,240	0.2%	Rank history: #22 in FY2021, #31 in FY2022, #43 in FY2023 and not on the FY2025 list; down 2 since FY2023.
46	Devereux Consulting, Inc. Top agencies DOI (Department of the Interior)	$186,037	0.2%	Rank history: #41 in FY2021, not on the FY2022 list, #69 in FY2023 and #44 in FY2025; up 23 since FY2023.
47	Swca Incorporated Top agencies USDA (Department of Agriculture)	$162,588	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
48	N.w.f.f., Inc. Top agencies DHS (Department of Homeland Security)	$150,000	0.1%	Rank history: not on the FY2021 list, #48 in FY2022, #48 in FY2023 and not on the FY2025 list; unchanged since FY2023.
49	Qri-Tetra TECH JV Top agencies Army (Department of the Army)	$145,928	0.1%	Rank history: not on the FY2021–FY2022 lists, #56 in FY2023 and not on the FY2025 list; up 7 since FY2023.
50	Castle Hill Associates, LLC Top agencies VA (Department of Veterans Affairs)	$144,070	0.1%	Rank history: #97 in FY2021, not on the FY2022 list, #62 in FY2023 and not on the FY2025 list; up 12 since FY2023.
51	Environmental Science Corporation Top agencies Navy (Department of the Navy)	$136,891	0.1%	Rank history: not on the FY2021–FY2022 lists, #73 in FY2023 and #53 in FY2025; up 22 since FY2023.
52	WSP USA Environment & Infrastructure Inc. Top agencies National Gallery of Art GSA (General Services Administration)	$136,184	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
53	Solv LLC Top agencies HHS (Department of Health and Human Services)	$134,797	0.1%	Rank history: #11 in FY2021, #49 in FY2022, not on the FY2023 list and #33 in FY2025; returned.
54	Look Rock, LLC Top agencies DOT (Department of Transportation)	$129,200	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
55	Pioneer Technical Services Inc. Top agencies USDA (Department of Agriculture)	$110,333	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
56	Ahtna Global LLC Top agencies DOT (Department of Transportation)	$103,767	0.1%	Rank history: #20 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
57	EPA Consulting, S.r.o. Top agencies DOS (Department of State)	$98,511	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
58	Mihalik Group LLC Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$97,490	0.1%	Rank history: #70 in FY2021, #70 in FY2022, #76 in FY2023 and #40 in FY2025; up 18 since FY2023.
59	Great Lakes Environmental Center, Inc. Top agencies EPA (Environmental Protection Agency)	$96,000	0.1%	Rank history: #38 in FY2021, #63 in FY2022, #52 in FY2023 and not on the FY2025 list; down 7 since FY2023.
60	Euroatlantic Partners Top agencies DOS (Department of State)	$95,056	0.1%	Rank history: not on the FY2021–FY2023 lists and #48 in FY2025; new.
61	HGS Engineering Inc. Top agencies USDA (Department of Agriculture)	$91,333	0.1%	Rank history: #72 in FY2021, #65 in FY2022, #82 in FY2023 and not on the FY2025 list; up 21 since FY2023.
62	JNV Group Top agencies HHS (Department of Health and Human Services)	$88,740	0.1%	Rank history: not on the FY2021–FY2023 lists and #49 in FY2025; new.
63	Miriam Toro Rosario Top agencies USDA (Department of Agriculture)	$88,200	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
64	Green River Development, P.C. Top agencies USDA (Department of Agriculture)	$85,224	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
65	DCR Services & Construction Inc. Top agencies DOI (Department of the Interior)	$84,021	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
66	Titan Environmental Solutions, Inc. Top agencies GSA (General Services Administration)	$81,755	0.1%	Rank history: not on the FY2021 list, #97 in FY2022, not on the FY2023 list and not on the FY2025 list; up 36 since FY2023.
67	Cardno Emerging Markets USA Ltd. Through Stantec GS Inc. Top agencies DOI (Department of the Interior)	$80,900	0.1%	Rank history: not on the FY2021 list, #50 in FY2022, #61 in FY2023 and not on the FY2025 list; down 6 since FY2023.
68	Aspect Consulting, LLC Top agencies DOI (Department of the Interior)	$71,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
69	Patrick Chastain Top agencies USDA (Department of Agriculture)	$69,783	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
70	Hanagita Environmental Resources, Corp. Top agencies DOT (Department of Transportation)	$66,811	0.1%	Rank history: not on the FY2021 list, #62 in FY2022, #75 in FY2023 and not on the FY2025 list; up 5 since FY2023.
71	Golder Europe Service Centre SRL Through WSP USA Solutions Inc. Top agencies DOI (Department of the Interior)	$64,561	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
72	C.j. Seto Support Services, LLC Top agencies DOJ (Department of Justice)	$64,459	0.1%	Rank history: #40 in FY2021, #44 in FY2022, #57 in FY2023 and not on the FY2025 list; down 15 since FY2023.
73	Etude De Maitre Amoikon Beugre Gladys Top agencies DOS (Department of State)	$58,939	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
74	CT Consultants Inc. Top agencies GSA (General Services Administration)	$55,973	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
75	Mannik & Smith Group, Inc. Top agencies GSA (General Services Administration)	$54,408	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
76	Nutter & Associates Inc. Top agencies USDA (Department of Agriculture)	$53,720	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
77	ICF International, Inc. Through ICF Incorporated, L.L.C. Top agencies EPA (Environmental Protection Agency)	$50,000	<0.1%	Rank history: not on the FY2021 list, #1 in FY2022, #13 in FY2023 and not on the FY2025 list; down 64 since FY2023.
78	Mead & Hunt Inc. Top agencies DOT (Department of Transportation)	$45,900	<0.1%	Rank history: #80 in FY2021, not on the FY2022 list, #53 in FY2023 and #43 in FY2025; down 25 since FY2023.
79	Aquarange Research LLC Top agencies DOI (Department of the Interior)	$40,000	<0.1%	Rank history: not on the FY2021 list, #83 in FY2022, #81 in FY2023 and #58 in FY2025; up 2 since FY2023.
80	Stephen J Libby PHD Consulting LLC Top agencies DOI (Department of the Interior)	$40,000	<0.1%	Rank history: not on the FY2021 list, #90 in FY2022, #86 in FY2023 and not on the FY2025 list; up 6 since FY2023.
81	Applied Intellect LLC Top agencies USDA (Department of Agriculture)	$39,954	<0.1%	Rank history: not on the FY2021 list, #57 in FY2022, #88 in FY2023 and not on the FY2025 list; up 7 since FY2023.
82	Chemtrack Alaska, Inc. Top agencies DOT (Department of Transportation)	$38,693	<0.1%	Rank history: not on the FY2021 list, #82 in FY2022, #33 in FY2023 and not on the FY2025 list; down 49 since FY2023.
83	Jirak Consulting Associates, LLC Top agencies Commerce (Department of Commerce)	$37,000	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
84	Bluestone Environmental Group, Inc. Top agencies USDA (Department of Agriculture)	$35,000	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
85	Stimson Donald K Top agencies DOT (Department of Transportation)	$30,000	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
86	Toeroek Associates, Inc. Top agencies EPA (Environmental Protection Agency)	$28,730	<0.1%	Rank history: not on the FY2021 list, #8 in FY2022, #9 in FY2023 and not on the FY2025 list; down 77 since FY2023.
87	Advanced Matrix, Inc. Top agencies DHS (Department of Homeland Security)	$27,500	<0.1%	Rank history: not on the FY2021–FY2022 lists, #87 in FY2023 and #60 in FY2025; unchanged since FY2023.
88	Ipower LLC Top agencies Commerce (Department of Commerce)	$25,068	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
89	Colorado Department of Public Health & Environment Top agencies DOI (Department of the Interior)	$25,000	<0.1%	Rank history: not on the FY2021–FY2023 lists and #71 in FY2025; new.
90	Meca Consulting Inc. Top agencies DOI (Department of the Interior)	$23,170	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
91	Deltares USA Inc. Top agencies Army (Department of the Army)	$21,700	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
92	Industrial Economics Inc. Top agencies DOI (Department of the Interior)	$21,501	<0.1%	Rank history: #47 in FY2021, #46 in FY2022, #97 in FY2023 and not on the FY2025 list; up 5 since FY2023.
93	Blackhawk Environmental Inc. Top agencies VA (Department of Veterans Affairs)	$19,820	<0.1%	Rank history: #82 in FY2021, #92 in FY2022, #94 in FY2023 and #64 in FY2025; up 1 since FY2023.
94	Relx Inc. Through Elsevier Inc. Top agencies HHS (Department of Health and Human Services)	$19,687	<0.1%	Rank history: not on the FY2021–FY2023 lists and #63 in FY2025; new.
95	Stantec GS Inc. Top agencies DOI (Department of the Interior)	$17,917	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
96	The NDN Companies Top agencies Army (Department of the Army)	$17,119	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
97	Advanced Environmental Management Group, LLC Top agencies DOI (Department of the Interior) USDA (Department of Agriculture)	$15,930	<0.1%	Rank history: #91 in FY2021, not on the FY2022–FY2023 lists and #66 in FY2025; returned.
98	Scout Environmental, Inc. Top agencies VA (Department of Veterans Affairs)	$14,617	<0.1%	Rank history: not on the FY2021–FY2023 lists and #68 in FY2025; up 18 since FY2023.
99	Kestrel Tellevate LLC Top agencies USDA (Department of Agriculture)	$13,910	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
100	Lake Roosevelt Forum Top agencies DOI (Department of the Interior)	$12,700	<0.1%	Rank history: #96 in FY2021, not on the FY2022–FY2023 lists and #69 in FY2025; up 8 since FY2023.

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100 of 115 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 $116 million 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 2024 ran Oct 1, 2023 – Sep 30, 2024. 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 FY2023. "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 FY2023 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 F115 contractors in FY2024?

1. Eastern Research Group Inc. ($33M), 2. Weston-Techlaw JV LLC ($13.3M), 3. Research Triangle Institute ($5.82M), 4. ABT Global LLC ($4.22M), 5. General Dynamics Corporation ($3.38M), 6. S C & A Inc. ($2.86M), 7. Avanti Corporation ($2.67M), 8. Brice Engineering, LLC ($2.46M), 9. Oneida Total Integrated Enterprises LLC ($2.29M), 10. CDM Federal Programs Corporation ($1.96M).

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