Top 44 Contractors in PSC F110: Development of Environmental Impact Statements and Assessments, Jul 2025–Jun 2026

Name: Top 44 Contractors in PSC F110: Development of Environmental Impact Statements and Assessments, Jul 2025–Jun 2026
Creator: GovTribe

Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe

The top 10 won 83% of PSC F110 contract dollars from July 2025 through June 2026

Contract obligations: $56,996,167 Net of deobligations, by contracts coded PSC F110
Contractors: 48 Parent companies with an obligation
Largest contractor: Vernadero Group Inc. $19.1 million, 32.3% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 44 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Vernadero Group Inc. Top agencies DHS (Department of Homeland Security)	$19,079,506	32.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
2	Tierra Right of Way Services Ltd Top agencies DHS (Department of Homeland Security)	$9,216,243	15.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
3	Gulf South Research Corp Top agencies DHS (Department of Homeland Security)	$5,472,502	9.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
4	ECO & Associates, Inc. Top agencies DHS (Department of Homeland Security)	$4,954,044	8.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
5	Pika International Inc. Top agencies Army (Department of the Army)	$3,372,409	5.7%	Rank history: not on the FY2021–FY2023 lists, #1 in FY2024 and #1 in FY2025; down 4 since Jul 2024–Jun 2025.
6	Bay West LLC Top agencies Army (Department of the Army)	$1,827,858	3.1%	Rank history: #9 in FY2021, #6 in FY2022, #7 in FY2023, #5 in FY2024 and #2 in FY2025; down 1 since Jul 2024–Jun 2025.
7	Real Model Solutions, Inc. Top agencies Navy (Department of the Navy)	$1,702,616	2.9%	Rank history: not on the FY2021–FY2024 lists and #14 in FY2025; new, not ranked in Jul 2024–Jun 2025.
8	Mclaughlin Research Corporation Top agencies Navy (Department of the Navy)	$1,376,835	2.3%	Rank history: not on the FY2021–FY2023 lists, #6 in FY2024 and #3 in FY2025; down 4 since Jul 2024–Jun 2025.
9	First Environment Inc. Top agencies Army (Department of the Army)	$985,718	1.7%	Rank history: not on the FY2021–FY2024 lists and #12 in FY2025; new, not ranked in Jul 2024–Jun 2025.
10	AECOM Technical Services, Inc. Top agencies Commerce (Department of Commerce)	$940,189	1.6%	Rank history: #55 in FY2021, #37 in FY2022, not on the FY2023 list, #19 in FY2024 and #8 in FY2025; up 9 since Jul 2024–Jun 2025.
11	Bayside Engineering Construction Inc. Top agencies Navy (Department of the Navy)	$850,918	1.4%	Rank history: #37 in FY2021, #1 in FY2022, not on the FY2023 list, #15 in FY2024 and #4 in FY2025; down 5 since Jul 2024–Jun 2025.
12	Aerostar Environmental and Construction LLC Top agencies Army (Department of the Army)	$835,320	1.4%	Rank history: #16 in FY2021, #15 in FY2022, #10 in FY2023, #9 in FY2024 and #5 in FY2025; new, not ranked in Jul 2024–Jun 2025.
13	S C & A Inc. Top agencies DHS (Department of Homeland Security)	$810,546	1.4%	Rank history: #44 in FY2021, not on the FY2022 list, #5 in FY2023, #2 in FY2024 and #6 in FY2025; down 11 since Jul 2024–Jun 2025.
14	The NDN Companies Top agencies Army (Department of the Army)	$763,134	1.3%	Rank history: not on the FY2021–FY2024 lists and #9 in FY2025; new, not ranked in Jul 2024–Jun 2025.
15	North Wind-Ea II JV, LLC Top agencies Army (Department of the Army)	$631,753	1.1%	Rank history: not on the FY2021–FY2024 lists and #11 in FY2025; new, not ranked in Jul 2024–Jun 2025.
16	Hamer Environmental Limited Partnership Top agencies DOI (Department of the Interior)	$565,751	1.0%	Rank history: not on the FY2021–FY2023 lists, #23 in FY2024 and #7 in FY2025; down 5 since Jul 2024–Jun 2025.
17	Sustainment & Restoration Services, LLC Top agencies Navy (Department of the Navy)	$553,669	0.9%	Rank history: not on the FY2021–FY2023 lists, #18 in FY2024 and #10 in FY2025; down 4 since Jul 2024–Jun 2025.
18	Tetra Tech, Inc. 3 awardees Top agencies DHS (Department of Homeland Security) DOT (Department of Transportation) USDA (Department of Agriculture)	$537,706	0.9%	Rank history: #13 in FY2021, #20 in FY2022, #19 in FY2023, #16 in FY2024 and #13 in FY2025; down 8 since Jul 2024–Jun 2025.
19	Tehama ECS LLC Top agencies Army (Department of the Army)	$483,875	0.8%	Rank history: not on the FY2021–FY2024 lists and #15 in FY2025; new, not ranked in Jul 2024–Jun 2025.
20	Koman Government Solutions LLC Top agencies Army (Department of the Army)	$335,336	0.6%	Rank history: not on the FY2021–FY2024 lists and #16 in FY2025; new, not ranked in Jul 2024–Jun 2025.
21	Dawson Solutions LLC Top agencies Army (Department of the Army)	$318,877	0.5%	Rank history: not on the FY2021–FY2023 lists, #30 in FY2024 and #17 in FY2025; up 2 since Jul 2024–Jun 2025.
22	Cherokee Federal Solutions, L.L.C. Top agencies Army (Department of the Army)	$300,601	0.5%	Rank history: not on the FY2021–FY2024 lists and #18 in FY2025; new, not ranked in Jul 2024–Jun 2025.
23	Claene Group LLC Top agencies DLA (Defense Logistics Agency)	$262,356	0.4%	Rank history: not on the FY2021–FY2022 lists, #22 in FY2023, #26 in FY2024 and #19 in FY2025; down 6 since Jul 2024–Jun 2025.
24	OCH JV Top agencies Navy (Department of the Navy)	$251,869	0.4%	Rank history: not on the FY2021–FY2024 lists and #20 in FY2025; new, not ranked in Jul 2024–Jun 2025.
25	HGS Engineering Inc. Top agencies DLA (Defense Logistics Agency) USDA (Department of Agriculture)	$248,100	0.4%	Rank history: not on the FY2021–FY2022 lists, #25 in FY2023, #24 in FY2024 and #25 in FY2025; down 5 since Jul 2024–Jun 2025.
26	Aarcher, Inc. Top agencies DOI (Department of the Interior)	$242,202	0.4%	Rank history: not on the FY2021–FY2023 lists, #25 in FY2024 and #21 in FY2025; down 10 since Jul 2024–Jun 2025.
27	Sealaska Remediation Solutions, LLC Top agencies Army (Department of the Army)	$213,685	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
28	Hdr, Inc. Through HDR Environmental, Operations and Construction, Inc. Top agencies Navy (Department of the Navy)	$153,950	0.3%	Rank history: #8 in FY2021, #8 in FY2022, #26 in FY2023, #28 in FY2024 and #22 in FY2025; down 13 since Jul 2024–Jun 2025.
29	Tanaq Engineering & Sustainability LLC Top agencies Navy (Department of the Navy)	$103,615	0.2%	Rank history: not on the FY2021–FY2024 lists and #26 in FY2025; new, not ranked in Jul 2024–Jun 2025.
30	Noreas Inc. Through Noreas Aptim Environmental Remediation JV Top agencies Navy (Department of the Navy)	$93,486	0.2%	Rank history: not on the FY2021–FY2024 lists and #38 in FY2025; up 6 since Jul 2024–Jun 2025.
31	Marstel-Day, LLC Top agencies Navy (Department of the Navy)	$70,334	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
32	Leidos Holdings, Inc. Through Leidos, Inc. Top agencies DOI (Department of the Interior)	$66,383	0.1%	Rank history: #2 in FY2021, #26 in FY2022, #1 in FY2023, #34 in FY2024 and #28 in FY2025; new, not ranked in Jul 2024–Jun 2025.
33	CE Solution Plus Corp. Top agencies Army (Department of the Army)	$65,186	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
34	Engineering/Remediation Resources Group Inc. Top agencies Navy (Department of the Navy)	$57,382	0.1%	Rank history: #41 in FY2021, #14 in FY2022, #17 in FY2023, #32 in FY2024 and #33 in FY2025; down 8 since Jul 2024–Jun 2025.
35	Buecher Debbie C Top agencies Army (Department of the Army)	$43,520	0.1%	Rank history: not on the FY2021–FY2024 lists and #35 in FY2025; new, not ranked in Jul 2024–Jun 2025.
36	Global Van Co., Ltd. Top agencies Navy (Department of the Navy)	$23,132	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
37	Hyperion Biotechnology, Inc. Top agencies VA (Department of Veterans Affairs)	$22,760	<0.1%	Rank history: not on the FY2021–FY2023 lists, #42 in FY2024 and #39 in FY2025; unchanged since Jul 2024–Jun 2025.
38	Integrity and Honor LLC Top agencies USAF (Department of the Air Force)	$19,556	<0.1%	Rank history: not on the FY2021–FY2024 lists and #31 in FY2025; down 5 since Jul 2024–Jun 2025.
39	Essnova Solutions Inc. Top agencies USDA (Department of Agriculture)	$16,800	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
40	A To Z Management Consulting, LLC Top agencies DHA (Defense Health Agency)	$16,500	<0.1%	Rank history: not on the FY2021–FY2024 lists and #40 in FY2025; up 1 since Jul 2024–Jun 2025.
41	Neie, Inc. Top agencies DHS (Department of Homeland Security)	$7,833	<0.1%	Rank history: not on the FY2021 list, #48 in FY2022, #50 in FY2023, #47 in FY2024 and #44 in FY2025; up 4 since Jul 2024–Jun 2025.
42	Solv LLC Top agencies USDA (Department of Agriculture)	$5,490	<0.1%	Rank history: not on the FY2021 list, #19 in FY2022, #31 in FY2023, #39 in FY2024 and #47 in FY2025; new, not ranked in Jul 2024–Jun 2025.
43	Corelogic Solutions, LLC Top agencies DOJ (Department of Justice)	$1,908	<0.1%	Rank history: #18 in FY2021, #18 in FY2022, not on the FY2023 list, #51 in FY2024 and not on the FY2025 list; up 8 since Jul 2024–Jun 2025.
44	American Association for Laboratory Accreditation, Inc. Top agencies Army (Department of the Army)	$1,000	<0.1%	Rank history: #48 in FY2021, #58 in FY2022, #45 in FY2023, #54 in FY2024 and #42 in FY2025; down 2 since Jul 2024–Jun 2025.

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44 of 48 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 $59 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.
Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
Rank changes compare with Jul 2024–Jun 2025. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 PSC F110 contractors in Jul 2025–Jun 2026?

1. Vernadero Group Inc. ($19.1M), 2. Tierra Right of Way Services Ltd ($9.22M), 3. Gulf South Research Corp ($5.47M), 4. ECO & Associates, Inc. ($4.95M), 5. Pika International Inc. ($3.37M), 6. Bay West LLC ($1.83M), 7. Real Model Solutions, Inc. ($1.7M), 8. Mclaughlin Research Corporation ($1.38M), 9. First Environment Inc. ($986K), 10. AECOM Technical Services, Inc. ($940K).

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