Top 45 Contractors in PSC B502: Air Quality Analysis, FY2022

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	State of California Controllers Office 2 awardees, including University of California, Davis and University of California, San Diego Top agencies DOI (Department of the Interior) EPA (Environmental Protection Agency)	$3,509,385	27.5%	Rank history: #2 in FY2021, #2 in FY2023, #2 in FY2024 and not on the FY2025 list; up 1 since FY2021.
2	Air Resource Specialists, Inc. Top agencies DOI (Department of the Interior)	$2,826,964	22.1%	Rank history: #4 in FY2021, #1 in FY2023, #1 in FY2024 and #2 in FY2025; up 2 since FY2021.
3	Continental Shelf Associates Incorporated Through CSA Ocean Sciences Inc. Top agencies DOI (Department of the Interior)	$1,779,354	13.9%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
4	Industrial Economics Inc. Top agencies EPA (Environmental Protection Agency)	$1,432,687	11.2%	Rank history: #5 in FY2021, #5 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2021.
5	Nevada System of Higher Education Top agencies DOI (Department of the Interior)	$741,180	5.8%	Rank history: not on the FY2021 list, #4 in FY2023, #4 in FY2024 and #4 in FY2025; new.
6	Research Triangle Institute Top agencies DOI (Department of the Interior)	$460,680	3.6%	Rank history: #6 in FY2021, #7 in FY2023, #5 in FY2024 and #6 in FY2025; unchanged since FY2021.
7	Environmental Management & Planning Solutions LLC Top agencies DOI (Department of the Interior)	$420,548	3.3%	Rank history: #7 in FY2021, #3 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2021.
8	WSP USA Environment & Infrastructure Inc. Top agencies DOI (Department of the Interior)	$309,984	2.4%	Rank history: #30 in FY2021, not on the FY2023 list, #7 in FY2024 and #7 in FY2025; up 22 since FY2021.
9	Mriglobal Top agencies DOD (Department of Defense)	$273,069	2.1%	Rank history: #1 in FY2021 and not on the FY2023–FY2025 lists; down 8 since FY2021.
10	Castle Hill Associates, LLC Top agencies VA (Department of Veterans Affairs)	$169,335	1.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
11	Aehs Incorporated Top agencies Army (Department of the Army)	$82,625	0.6%	Rank history: #35 in FY2021, #15 in FY2023, #11 in FY2024 and #13 in FY2025; up 24 since FY2021.
12	E & S Environmental Chemistry, Inc. Top agencies DOI (Department of the Interior)	$70,000	0.5%	Rank history: #12 in FY2021, #23 in FY2023, #28 in FY2024 and not on the FY2025 list; unchanged since FY2021.
13	Environmental Consulting Group, Inc. Top agencies Treasury (Department of the Treasury)	$44,943	0.4%	Rank history: #13 in FY2021, #16 in FY2023, #13 in FY2024 and not on the FY2025 list; unchanged since FY2021.
14	Global One Sourcing LLC Top agencies VA (Department of Veterans Affairs)	$41,754	0.3%	Rank history: not on the FY2021 list, #33 in FY2023 and not on the FY2024–FY2025 lists; new.
15	Applied Intellect - Trihydro 8A JV LLC Top agencies DOI (Department of the Interior)	$38,686	0.3%	Rank history: not on the FY2021 list, #48 in FY2023 and not on the FY2024–FY2025 lists; new.
16	Batta Environmental Associates Inc. Top agencies Army (Department of the Army) SSA (Social Security Administration)	$37,257	0.3%	Rank history: not on the FY2021 list, #10 in FY2023 and not on the FY2024–FY2025 lists; new.
17	GFS Supply & Services Company, Inc. Top agencies Navy (Department of the Navy)	$34,200	0.3%	Rank history: not on the FY2021 list, #21 in FY2023, #19 in FY2024 and not on the FY2025 list; new.
18	Iveco SUD-West Nutzfahrzeuge GMBH Through Ati, Inc. Top agencies NARA (National Archives and Records Administration) DOI (Department of the Interior)	$30,829	0.2%	Rank history: #19 in FY2021, #19 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2021.
19	Mabbett & Associates, Inc. Top agencies VA (Department of Veterans Affairs)	$27,844	0.2%	Rank history: #23 in FY2021, not on the FY2023 list, #10 in FY2024 and #9 in FY2025; up 4 since FY2021.
20	Phase Associates LLC Top agencies Army (Department of the Army)	$24,317	0.2%	Rank history: #20 in FY2021, not on the FY2023 list, #22 in FY2024 and not on the FY2025 list; unchanged since FY2021.
21	Atlas Technical Consultants LLC Top agencies VA (Department of Veterans Affairs)	$21,844	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
22	Advance Safety Equipment Co. Top agencies Navy (Department of the Navy)	$21,405	0.2%	Rank history: #21 in FY2021, #22 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2021.
23	Wilbur Technical Services LLC 2 awardees Top agencies DOS (Department of State)	$20,632	0.2%	Rank history: not on the FY2021 list, #32 in FY2023 and not on the FY2024–FY2025 lists; new.
24	Montrose Environmental Group Inc. Through Onterris Response and Recovery, LLC Top agencies DOI (Department of the Interior)	$19,800	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
25	Trine Environmental Inc. Top agencies VA (Department of Veterans Affairs)	$19,638	0.2%	Rank history: not on the FY2021 list, not on the FY2023 list, #27 in FY2024 and #8 in FY2025; new.
26	State Health Services Texas Department of Through Texas Commission On Environmental Quality Top agencies USAF (Department of the Air Force)	$19,624	0.2%	Rank history: not on the FY2021 list, #27 in FY2023, #24 in FY2024 and not on the FY2025 list; new.
27	Sandlapper Controls, Inc. Top agencies VA (Department of Veterans Affairs)	$18,928	0.1%	Rank history: #22 in FY2021, #29 in FY2023 and not on the FY2024–FY2025 lists; down 5 since FY2021.
28	Automatic Fire Systems Inc. Top agencies Army (Department of the Army)	$17,400	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
29	Aerosol Monitoring & Analysis, Inc. Through CTG Environmental, LLC Top agencies DFAS (Defense Finance and Accounting Service)	$17,200	0.1%	Rank history: #24 in FY2021, #31 in FY2023 and not on the FY2024–FY2025 lists; down 5 since FY2021.
30	Sage-Efs JV Top agencies VA (Department of Veterans Affairs)	$11,680	0.1%	Rank history: not on the FY2021 list, not on the FY2023 list, #30 in FY2024 and #31 in FY2025; new.
31	Eurofins Scientific SE Through Testamerica Laboratories, Inc. Top agencies EPA (Environmental Protection Agency)	$11,180	0.1%	Rank history: not on the FY2021 list, #26 in FY2023 and not on the FY2024–FY2025 lists; new.
32	Environmental Science Corporation Top agencies Army (Department of the Army)	$10,686	0.1%	Rank history: not on the FY2021 list, #37 in FY2023, #33 in FY2024 and not on the FY2025 list; new.
33	Titan Environmental Solutions, Inc. Top agencies Navy (Department of the Navy)	$8,855	0.1%	Rank history: not on the FY2021 list, not on the FY2023 list, #25 in FY2024 and #25 in FY2025; new.
34	Safe Air Systems, Inc. Top agencies Navy (Department of the Navy)	$8,683	0.1%	Rank history: #33 in FY2021 and not on the FY2023–FY2025 lists; down 1 since FY2021.
35	Penn Air Control Inc. Top agencies VA (Department of Veterans Affairs)	$7,875	0.1%	Rank history: #36 in FY2021, #40 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2021.
36	China Peak Mountain Resort, LLC Top agencies USDA (Department of Agriculture)	$7,540	0.1%	Rank history: not on the FY2021 list, #44 in FY2023 and not on the FY2024–FY2025 lists; new.
37	Campbell Brothers Limited Through Als Group Usa, Corp. Top agencies Navy (Department of the Navy)	$6,188	<0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
38	Tioga Environmental Consultants Inc. Top agencies VA (Department of Veterans Affairs)	$5,925	<0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
39	Powell, Dale E. Top agencies USDA (Department of Agriculture)	$5,880	<0.1%	Rank history: #38 in FY2021, #42 in FY2023, #34 in FY2024 and not on the FY2025 list; down 1 since FY2021.
40	Bay West LLC Top agencies VA (Department of Veterans Affairs)	$5,685	<0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
41	Applied Water Technology, Inc. Top agencies DOJ (Department of Justice)	$5,352	<0.1%	Rank history: #41 in FY2021, #43 in FY2023, #35 in FY2024 and not on the FY2025 list; unchanged since FY2021.
42	Kisiel Edward A Top agencies DOI (Department of the Interior)	$3,685	<0.1%	Rank history: #42 in FY2021, #46 in FY2023, #40 in FY2024 and not on the FY2025 list; unchanged since FY2021.
43	Douglas W. Peters & Associates, Inc. Top agencies VA (Department of Veterans Affairs)	$3,086	<0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
44	University of Wisconsin System Top agencies USDA (Department of Agriculture)	$2,805	<0.1%	Rank history: #27 in FY2021 and not on the FY2023–FY2025 lists; down 17 since FY2021.
45	Trace Analytics, LLC Top agencies Navy (Department of the Navy)	$716	<0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.

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 $12.8 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 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