Top 100 Contractors in PSC F115: Environmental Systems Protection – Environmental Consulting and Legal Support, FY2021

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Battelle Memorial Institute Top agencies HHS (Department of Health and Human Services)	$5,344,112	9.7%	Rank history: #4 in FY2022, #5 in FY2023 and not on the FY2024–FY2025 lists; up 2 since FY2020.
2	Sol Solutions, LLC Top agencies Army (Department of the Army)	$5,266,360	9.6%	Rank history: #26 in FY2022, #24 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2020.
3	Eastern Research Group Inc. Top agencies EPA (Environmental Protection Agency) USDA (Department of Agriculture)	$4,708,485	8.6%	Rank history: #2 in FY2022, #2 in FY2023, #1 in FY2024 and #1 in FY2025; up 15 since FY2020.
4	Calista Corp 2 awardees, including Brice Environmental Services Corporation Top agencies DOT (Department of Transportation)	$4,561,047	8.3%	Rank history: #14 in FY2022 and not on the FY2023–FY2025 lists; up 6 since FY2020.
5	Windjammer Environmental LLC Top agencies HHS (Department of Health and Human Services)	$3,988,676	7.3%	Rank history: not on the FY2022–FY2025 lists; up 8 since FY2020.
6	Brice Engineering, LLC Top agencies Army (Department of the Army)	$2,879,362	5.2%	Rank history: #11 in FY2022, #12 in FY2023, #8 in FY2024 and not on the FY2025 list; up 16 since FY2020.
7	Ahtna, Incorporated Through Ahtna Global LLC Top agencies DOT (Department of Transportation)	$2,650,064	4.8%	Rank history: #6 in FY2022, #58 in FY2023 and not on the FY2024–FY2025 lists; up 25 since FY2020.
8	Specpro Professional Services, LLC Top agencies Army (Department of the Army)	$2,567,612	4.7%	Rank history: #10 in FY2022, #11 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2020.
9	Om Group, Inc. Top agencies Army (Department of the Army)	$1,699,610	3.1%	Rank history: not on the FY2022–FY2025 lists; up 66 since FY2020.
10	Pi2E JV LLP Top agencies HHS (Department of Health and Human Services)	$1,615,352	2.9%	Rank history: #5 in FY2022, #8 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
11	Solv LLC Top agencies USDA (Department of Agriculture)	$1,244,160	2.3%	Rank history: #49 in FY2022, not on the FY2023 list, #53 in FY2024 and #33 in FY2025; up 4 since FY2020.
12	Environmental Research Group, L.L.C. Top agencies Army (Department of the Army) Smithsonian (Smithsonian Institution)	$866,138	1.6%	Rank history: #18 in FY2022, #34 in FY2023, #20 in FY2024 and #19 in FY2025; up 7 since FY2020.
13	Diamond Geeks, Corp. Through Dgci Corporation Top agencies DOI (Department of the Interior)	$834,849	1.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
14	Leidos Holdings, Inc. Through Leidos, Inc. Top agencies DOE (Department of Energy)	$800,000	1.5%	Rank history: not on the FY2022–FY2025 lists; down 2 since FY2020.
15	CTI and Associates, Inc. Top agencies Army (Department of the Army) EPA (Environmental Protection Agency)	$757,382	1.4%	Rank history: not on the FY2022–FY2025 lists; up 8 since FY2020.
16	Weston-Techlaw JV LLC Top agencies EPA (Environmental Protection Agency)	$700,000	1.3%	Rank history: #3 in FY2022, #1 in FY2023, #2 in FY2024 and #2 in FY2025; new, not ranked in FY2020.
17	Flowwest, LLC Top agencies DOI (Department of the Interior)	$681,273	1.2%	Rank history: #12 in FY2022 and not on the FY2023–FY2025 lists; down 3 since FY2020.
18	Whitetail Environmental, LLC Top agencies Army (Department of the Army)	$591,008	1.1%	Rank history: #24 in FY2022, #19 in FY2023, #19 in FY2024 and #21 in FY2025; new, not ranked in FY2020.
19	Horsley Witten Group, Inc. Top agencies EPA (Environmental Protection Agency)	$572,314	1.0%	Rank history: #37 in FY2022, #18 in FY2023, #11 in FY2024 and #25 in FY2025; new, not ranked in FY2020.
20	Ahtna Global LLC Top agencies DOT (Department of Transportation)	$538,586	1.0%	Rank history: not on the FY2022–FY2023 lists, #56 in FY2024 and not on the FY2025 list; down 11 since FY2020.
21	Noreas, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$518,732	0.9%	Rank history: #27 in FY2022 and not on the FY2023–FY2025 lists; up 3 since FY2020.
22	Auxilio Management Services Top agencies Commerce (Department of Commerce)	$440,402	0.8%	Rank history: #31 in FY2022, #43 in FY2023, #45 in FY2024 and not on the FY2025 list; up 9 since FY2020.
23	Aerostar Environmental and Construction LLC Top agencies Army (Department of the Army)	$419,407	0.8%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
24	EGS Inc. Top agencies DOI (Department of the Interior)	$401,040	0.7%	Rank history: #42 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
25	ECO & Associates, Inc. Top agencies Army (Department of the Army)	$389,257	0.7%	Rank history: #30 in FY2022, #29 in FY2023, #30 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
26	S C & A Inc. Top agencies EPA (Environmental Protection Agency)	$384,480	0.7%	Rank history: #13 in FY2022, #7 in FY2023, #6 in FY2024 and #14 in FY2025; new, not ranked in FY2020.
27	Brice Solutions, LLC Top agencies DOT (Department of Transportation)	$374,171	0.7%	Rank history: #7 in FY2022, #3 in FY2023, not on the FY2024 list and #37 in FY2025; new, not ranked in FY2020.
28	Bethel Native Corporation Through Bethel Engineering & Consulting LLC Top agencies DOT (Department of Transportation)	$341,435	0.6%	Rank history: not on the FY2022–FY2025 lists; down 12 since FY2020.
29	SP Cramer & Associates Inc. 2 awardees Top agencies DOI (Department of the Interior) USDA (Department of Agriculture)	$341,315	0.6%	Rank history: #29 in FY2022, #36 in FY2023, #32 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
30	Dynamic Solutions, LLC Top agencies Army (Department of the Army)	$335,734	0.6%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
31	Ayuda Companies Top agencies GSA (General Services Administration) DFAS (Defense Finance and Accounting Service)	$297,559	0.5%	Rank history: #20 in FY2022, #89 in FY2023 and not on the FY2024–FY2025 lists; up 57 since FY2020.
32	Cavanaugh & Associates, P.a. Top agencies HHS (Department of Health and Human Services)	$241,915	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
33	Stell Environmental Enterprises Inc. Top agencies Army (Department of the Army)	$235,898	0.4%	Rank history: #76 in FY2022, #64 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
34	Oneida Nation Through Sustainment & Restoration Services, LLC Top agencies DOI (Department of the Interior)	$227,167	0.4%	Rank history: not on the FY2022 list, #26 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2020.
35	The Northbridge Group, Inc. Top agencies EPA (Environmental Protection Agency)	$217,700	0.4%	Rank history: #85 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
36	Bowhead Logistics Solutions, LLC Top agencies EPA (Environmental Protection Agency)	$210,000	0.4%	Rank history: #33 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
37	Petroleum Resources & Development, Inc. Top agencies DOT (Department of Transportation)	$207,737	0.4%	Rank history: #32 in FY2022, #98 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
38	Great Lakes Environmental Center, Inc. Top agencies EPA (Environmental Protection Agency)	$199,334	0.4%	Rank history: #63 in FY2022, #52 in FY2023, #59 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
39	Applied Environmental, Inc. Top agencies GSA (General Services Administration)	$195,494	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
40	C.j. Seto Support Services, LLC Top agencies DOJ (Department of Justice)	$180,000	0.3%	Rank history: #44 in FY2022, #57 in FY2023, #72 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
41	Devereux Consulting, Inc. Top agencies DOI (Department of the Interior)	$171,278	0.3%	Rank history: not on the FY2022 list, #69 in FY2023, #46 in FY2024 and #44 in FY2025; up 20 since FY2020.
42	Vision Planning and Consulting LLC Top agencies DOI (Department of the Interior)	$160,496	0.3%	Rank history: #51 in FY2022 and not on the FY2023–FY2025 lists; up 10 since FY2020.
43	Dpra Incorporated Top agencies EPA (Environmental Protection Agency)	$152,601	0.3%	Rank history: #39 in FY2022, #47 in FY2023, #37 in FY2024 and #31 in FY2025; up 12 since FY2020.
44	AECOM Through AECOM Technical Services, Inc. Top agencies GSA (General Services Administration)	$151,200	0.3%	Rank history: #9 in FY2022, #14 in FY2023 and not on the FY2024–FY2025 lists; up 20 since FY2020.
45	The Cadmus Group LLC Top agencies DHS (Department of Homeland Security) EPA (Environmental Protection Agency)	$143,416	0.3%	Rank history: #72 in FY2022, not on the FY2023 list, #35 in FY2024 and #6 in FY2025; up 26 since FY2020.
46	Espinoza Cultural Services, LLC Top agencies DOI (Department of the Interior)	$140,843	0.3%	Rank history: not on the FY2022–FY2025 lists; up 4 since FY2020.
47	Industrial Economics Inc. Top agencies DOI (Department of the Interior)	$139,422	0.3%	Rank history: #46 in FY2022, #97 in FY2023, #92 in FY2024 and not on the FY2025 list; down 9 since FY2020.
48	Wood Environment & Infrastructure Solutions Inc. Through WSP E&Is GMBH Top agencies Army (Department of the Army)	$138,880	0.3%	Rank history: #52 in FY2022, not on the FY2023 list, #39 in FY2024 and not on the FY2025 list; unchanged since FY2020.
49	Biosphere International Inc. Top agencies VA (Department of Veterans Affairs)	$118,460	0.2%	Rank history: #67 in FY2022 and not on the FY2023–FY2025 lists; down 5 since FY2020.
50	Industrial Hygiene Resources, Ltd. Top agencies Army (Department of the Army)	$108,310	0.2%	Rank history: #60 in FY2022 and not on the FY2023–FY2025 lists; up 9 since FY2020.
51	Strategic Sustainabilty Support Top agencies Army (Department of the Army)	$104,400	0.2%	Rank history: #64 in FY2022 and not on the FY2023–FY2025 lists; down 6 since FY2020.
52	Link Technologies Inc. Top agencies DOE (Department of Energy)	$100,000	0.2%	Rank history: #88 in FY2022 and not on the FY2023–FY2025 lists; down 23 since FY2020.
53	Systalex Corporation Top agencies EPA (Environmental Protection Agency)	$93,072	0.2%	Rank history: not on the FY2022–FY2025 lists; down 42 since FY2020.
54	Commonwealth Heritage Group, Inc. Top agencies USDA (Department of Agriculture)	$90,322	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
55	Pars Environmental Inc. Top agencies EPA (Environmental Protection Agency)	$84,629	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
56	C & C Environmental Inc. Top agencies DOI (Department of the Interior)	$84,000	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
57	Alpine Archaeological Consultants Inc. Top agencies USDA (Department of Agriculture)	$79,975	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
58	Daou Engineers, Inc. Top agencies Army (Department of the Army)	$76,170	0.1%	Rank history: #69 in FY2022 and not on the FY2023–FY2025 lists; down 9 since FY2020.
59	Peter Klug Top agencies Army (Department of the Army)	$69,754	0.1%	Rank history: not on the FY2022–FY2025 lists; up 8 since FY2020.
60	Ohana Environmental and Construction LLC Top agencies GSA (General Services Administration)	$66,626	0.1%	Rank history: #56 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
61	Harris Environmental Group Inc. Top agencies USDA (Department of Agriculture)	$66,166	0.1%	Rank history: not on the FY2022 list, #25 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
62	Hayman NW Consulting, LLC Top agencies USDA (Department of Agriculture)	$65,280	0.1%	Rank history: not on the FY2022–FY2025 lists; up 27 since FY2020.
63	ICF Incorporated, L.L.C. Top agencies SSA (Social Security Administration)	$57,021	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
64	Blue Construction Services LLC Top agencies DHS (Department of Homeland Security)	$56,789	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
65	Hawaii International Environmental Services Inc. Top agencies Navy (Department of the Navy)	$55,138	0.1%	Rank history: not on the FY2022 list, #77 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
66	Franklin Young International, Incorporated Top agencies VA (Department of Veterans Affairs)	$49,781	0.1%	Rank history: #75 in FY2022, #78 in FY2023 and not on the FY2024–FY2025 lists; up 12 since FY2020.
67	The Clark Group. Llc Top agencies USDA (Department of Agriculture)	$48,964	0.1%	Rank history: #43 in FY2022 and not on the FY2023–FY2025 lists; down 10 since FY2020.
68	Bristol Site Contractors, LLC Top agencies DOT (Department of Transportation)	$48,829	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
69	Northstar Technology Corp. Top agencies USDA (Department of Agriculture)	$46,230	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
70	Mihalik Group LLC Top agencies DHA (Defense Health Agency)	$43,200	0.1%	Rank history: #70 in FY2022, #76 in FY2023, #58 in FY2024 and #40 in FY2025; new, not ranked in FY2020.
71	France Custom Farming LLC Top agencies USDA (Department of Agriculture)	$42,925	0.1%	Rank history: #77 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
72	HGS Engineering Inc. Top agencies USDA (Department of Agriculture)	$37,558	0.1%	Rank history: #65 in FY2022, #82 in FY2023, #61 in FY2024 and not on the FY2025 list; down 42 since FY2020.
73	Bethel Environmental Solutions LLC Top agencies DOT (Department of Transportation)	$37,169	0.1%	Rank history: not on the FY2022–FY2025 lists; down 20 since FY2020.
74	Environmental Business Partners, LLC Top agencies Army (Department of the Army)	$30,884	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
75	Midatlantic Solid Waste Consultants LLC Top agencies VA (Department of Veterans Affairs)	$29,973	0.1%	Rank history: not on the FY2022 list, #68 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
76	Potomac Services Management Inc. Top agencies USDA (Department of Agriculture)	$26,700	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
77	Scheuer Jonathan Top agencies DOI (Department of the Interior)	$26,029	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 25 since FY2020.
78	Confederated Tribes and Bands of the Yakama Nation Top agencies DOI (Department of the Interior)	$22,569	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
79	Sinclair Broadcast Group Inc. Through Politico, LLC Top agencies USDA (Department of Agriculture)	$20,750	<0.1%	Rank history: #87 in FY2022, #85 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
80	Mead & Hunt Inc. Top agencies DOI (Department of the Interior)	$20,021	<0.1%	Rank history: not on the FY2022 list, #53 in FY2023, #78 in FY2024 and #43 in FY2025; down 40 since FY2020.
81	Corrections Colorado Department of Through Colorado Department of Public Health & Environment Top agencies DOI (Department of the Interior)	$20,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 23 since FY2020.
82	Blackhawk Environmental Inc. Top agencies VA (Department of Veterans Affairs)	$19,420	<0.1%	Rank history: #92 in FY2022, #94 in FY2023, #93 in FY2024 and #64 in FY2025; up 14 since FY2020.
83	State of Alaska Through Environmental Conservation Alaska Department Top agencies DHS (Department of Homeland Security)	$18,575	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 20 since FY2020.
84	Washington Conservation Science Institute Top agencies USDA (Department of Agriculture)	$18,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 5 since FY2020.
85	Red J Environmental Corporation Top agencies USDA (Department of Agriculture)	$17,014	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
86	Reed Elsevier Inc. Through Elsevier Inc. Top agencies HHS (Department of Health and Human Services)	$17,005	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
87	Betty Grizzle Top agencies DOI (Department of the Interior)	$16,303	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
88	TTL Associates Inc. Top agencies VA (Department of Veterans Affairs)	$15,147	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 37 since FY2020.
89	Magna Logmenn Ehf. Top agencies DOS (Department of State)	$14,250	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 19 since FY2020.
90	Paul William J Top agencies USDA (Department of Agriculture)	$14,000	<0.1%	Rank history: #91 in FY2022 and not on the FY2023–FY2025 lists; up 7 since FY2020.
91	Advanced Environmental Management Group, LLC Top agencies EPA (Environmental Protection Agency)	$12,686	<0.1%	Rank history: not on the FY2022–FY2023 lists, #97 in FY2024 and #66 in FY2025; down 26 since FY2020.
92	Gallagher & Associates Inc. Top agencies EPA (Environmental Protection Agency) Navy (Department of the Navy)	$12,300	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 11 since FY2020.
93	Hyperion Biotechnology, Inc. Top agencies VA (Department of Veterans Affairs)	$12,106	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
94	Sagebrush Advisors, LLC Top agencies USDA (Department of Agriculture)	$11,877	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
95	AAT Environmental, Inc. Top agencies DOT (Department of Transportation)	$11,683	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
96	Lake Roosevelt Forum Top agencies DOI (Department of the Interior)	$11,600	<0.1%	Rank history: not on the FY2022–FY2023 lists, #100 in FY2024 and #69 in FY2025; new, not ranked in FY2020.
97	Castle Hill Associates, LLC Top agencies DOI (Department of the Interior)	$11,417	<0.1%	Rank history: not on the FY2022 list, #62 in FY2023, #50 in FY2024 and not on the FY2025 list; down 56 since FY2020.
98	TKM Consulting Inc. Top agencies DOI (Department of the Interior)	$10,973	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
99	Cherokee Nation Through Cherokee Nation Management & Consulting, L.l.c.. Top agencies USDA (Department of Agriculture)	$10,810	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 53 since FY2020.
100	Aarcher, Inc. Top agencies DOE (Department of Energy)	$10,363	<0.1%	Rank history: not on the FY2022–FY2024 lists and #67 in FY2025; down 30 since FY2020.

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 $55 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 2021 ran Oct 1, 2020 – Sep 30, 2021. 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 FY2020. "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 FY2020 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