Top 100 Contractors in PSC AH: Natural Resources and Environment R&D Services, FY2023

Name: Top 100 Contractors in PSC AH: Natural Resources and Environment R&D Services, FY2023
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2022 – Sep 30, 2023 Code page on GovTribe

The top 10 won 34% of FY2023 PSC AH contract dollars

Contract obligations: $110,494,867 Net of deobligations, by contracts coded PSC AH or a code under it
Contractors: 205 Parent companies with an obligation
Largest contractor: Bay West LLC $10 million, 8.9% 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	Bay West LLC Top agencies Army (Department of the Army)	$9,999,105	8.9%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
2	University System of Maryland 2 awardees, including University of Maryland Baltimore County Top agencies NASA (National Aeronautics and Space Administration)	$4,984,846	4.5%	Rank history: #22 in FY2021, #62 in FY2022, #79 in FY2024 and not on the FY2025 list; up 60 since FY2022.
3	EA Engineering, Science, and Technology, Inc., PBC Top agencies Army (Department of the Army)	$4,580,541	4.1%	Rank history: #73 in FY2021, #15 in FY2022 and not on the FY2024–FY2025 lists; up 12 since FY2022.
4	Woolpert, Inc. Top agencies Army (Department of the Army)	$4,395,000	3.9%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
5	G.d.o., Inc. Top agencies Army (Department of the Army)	$2,600,000	2.3%	Rank history: not on the FY2021 list, #3 in FY2022, #4 in FY2024 and not on the FY2025 list; down 2 since FY2022.
6	Credere Associates, LLC Top agencies Army (Department of the Army)	$2,572,833	2.3%	Rank history: #21 in FY2021, #26 in FY2022, #22 in FY2024 and #3 in FY2025; up 20 since FY2022.
7	Ball Corp Through BAE Systems Space & Mission Systems Inc. Top agencies NASA (National Aeronautics and Space Administration)	$2,500,000	2.2%	Rank history: #19 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
8	Northrop Grumman Corporation Through Northrop Grumman Systems Corporation Top agencies NASA (National Aeronautics and Space Administration)	$2,499,689	2.2%	Rank history: not on the FY2021–FY2022 lists, #8 in FY2024 and not on the FY2025 list; new.
9	The Regents of the University of Colorado Top agencies Commerce (Department of Commerce) Army (Department of the Army)	$2,280,689	2.0%	Rank history: #18 in FY2021, #12 in FY2022, #64 in FY2024 and not on the FY2025 list; up 3 since FY2022.
10	Nevada State Veterans Home 2 awardees, including Nevada System of Higher Education Top agencies Army (Department of the Army)	$2,063,754	1.8%	Rank history: #62 in FY2021, #57 in FY2022, #6 in FY2024 and not on the FY2025 list; up 47 since FY2022.
11	The University of Iowa Top agencies Army (Department of the Army)	$2,037,553	1.8%	Rank history: not on the FY2021 list, #54 in FY2022, not on the FY2024 list and #45 in FY2025; up 43 since FY2022.
12	Oregon University System Through Oregon State University Top agencies Army (Department of the Army)	$1,845,370	1.7%	Rank history: #12 in FY2021, #56 in FY2022 and not on the FY2024–FY2025 lists; up 44 since FY2022.
13	Limno-Tech Inc. Top agencies Army (Department of the Army)	$1,748,242	1.6%	Rank history: #5 in FY2021, #7 in FY2022, #16 in FY2024 and #48 in FY2025; down 6 since FY2022.
14	Eastern Research Group Inc. Top agencies Army (Department of the Army) Commerce (Department of Commerce)	$1,747,295	1.6%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
15	Specpro Professional Services, LLC Top agencies EPA (Environmental Protection Agency)	$1,719,674	1.5%	Rank history: not on the FY2021 list, #28 in FY2022, #13 in FY2024 and not on the FY2025 list; up 13 since FY2022.
16	University Corporation for Atmospheric Research Top agencies Commerce (Department of Commerce)	$1,672,665	1.5%	Rank history: #98 in FY2021, #6 in FY2022, #3 in FY2024 and #2 in FY2025; down 10 since FY2022.
17	Arcadis N.V. Through Arcadis U.s., Inc. Top agencies Army (Department of the Army)	$1,528,974	1.4%	Rank history: #7 in FY2021, #13 in FY2022, #65 in FY2024 and not on the FY2025 list; down 4 since FY2022.
18	University of Maine System 2 awardees Top agencies Army (Department of the Army) USDA (Department of Agriculture)	$1,512,523	1.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
19	Alti LLC Top agencies Army (Department of the Army)	$1,500,000	1.3%	Rank history: #13 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
20	University of ST Andrews 2 awardees, including The University Court of the University of ST Andrews and Smru Limited Top agencies Navy (Department of the Navy) Army (Department of the Army)	$1,401,742	1.3%	Rank history: #10 in FY2021, #14 in FY2022, #14 in FY2024 and #62 in FY2025; down 6 since FY2022.
21	Biospyder Technologies, Inc. Top agencies EPA (Environmental Protection Agency)	$1,338,151	1.2%	Rank history: #2 in FY2021, #9 in FY2022, #9 in FY2024 and #14 in FY2025; down 12 since FY2022.
22	State of California Controllers Office 6 awardees, including University of California Santa Cruz, The Regents of the University of California and University of California San Diego Top agencies Army (Department of the Army) Navy (Department of the Navy)	$1,276,757	1.1%	Rank history: #4 in FY2021, #8 in FY2022, #31 in FY2024 and not on the FY2025 list; down 14 since FY2022.
23	Jacobs Engineering Group Inc. 2 awardees, including Ch2M Hill, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$1,217,415	1.1%	Rank history: not on the FY2021 list, #10 in FY2022, #40 in FY2024 and not on the FY2025 list; down 13 since FY2022.
24	Gana-A' Yoo, Limited Through Kaiyuh Information Technologies, LLC Top agencies USAF (Department of the Air Force)	$1,104,953	1.0%	Rank history: #11 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
25	Creare LLC Top agencies Army (Department of the Army)	$1,099,084	1.0%	Rank history: not on the FY2021–FY2022 lists, #18 in FY2024 and #11 in FY2025; up 128 since FY2022.
26	Anchor Qea, Inc. Top agencies Army (Department of the Army)	$1,045,906	0.9%	Rank history: #37 in FY2021, #52 in FY2022, #61 in FY2024 and #57 in FY2025; up 26 since FY2022.
27	Hdr, Inc. Through HDR Environmental, Operations and Construction, Inc. Top agencies DOI (Department of the Interior)	$1,001,682	0.9%	Rank history: not on the FY2021 list, #40 in FY2022, #30 in FY2024 and #53 in FY2025; up 13 since FY2022.
28	TDA Research, Inc. Top agencies Army (Department of the Army)	$962,178	0.9%	Rank history: not on the FY2021 list, #64 in FY2022 and not on the FY2024–FY2025 lists; up 36 since FY2022.
29	The Commonwealth of Massachusetts Through Northeastern University Top agencies Army (Department of the Army)	$961,030	0.9%	Rank history: #96 in FY2021, #51 in FY2022, #36 in FY2024 and not on the FY2025 list; up 22 since FY2022.
30	Geosyntec Consultants Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$946,471	0.8%	Rank history: not on the FY2021–FY2022 lists, #17 in FY2024 and not on the FY2025 list; new.
31	Regents of the University of Minnesota Top agencies Army (Department of the Army)	$936,330	0.8%	Rank history: #59 in FY2021, #38 in FY2022 and not on the FY2024–FY2025 lists; up 7 since FY2022.
32	Worcester Polytechnic Institute Top agencies Army (Department of the Army) DOI (Department of the Interior)	$910,701	0.8%	Rank history: #58 in FY2021, #31 in FY2022, #89 in FY2024 and #37 in FY2025; down 1 since FY2022.
33	University of North Carolina at Chapel Hill 2 awardees, including North Carolina State University and University of North Carolina At Charlotte Top agencies Army (Department of the Army)	$900,495	0.8%	Rank history: #49 in FY2021, #41 in FY2022 and not on the FY2024–FY2025 lists; up 8 since FY2022.
34	University of Texas System 2 awardees, including University of Texas At Austin Top agencies Army (Department of the Army)	$880,394	0.8%	Rank history: #76 in FY2021, #33 in FY2022, #51 in FY2024 and not on the FY2025 list; down 1 since FY2022.
35	Aptim Federal Services LLC Top agencies Army (Department of the Army)	$840,174	0.8%	Rank history: #27 in FY2021, #72 in FY2022 and not on the FY2024–FY2025 lists; up 37 since FY2022.
36	Haley & Aldrich, Inc. Top agencies Army (Department of the Army)	$828,563	0.7%	Rank history: not on the FY2021 list, #25 in FY2022 and not on the FY2024–FY2025 lists; down 11 since FY2022.
37	New Jersey Institute of Technology Top agencies DOI (Department of the Interior) Army (Department of the Army)	$825,000	0.7%	Rank history: not on the FY2021 list, #68 in FY2022, #71 in FY2024 and not on the FY2025 list; up 31 since FY2022.
38	University of Delaware Top agencies Army (Department of the Army)	$824,955	0.7%	Rank history: #32 in FY2021, #37 in FY2022, #55 in FY2024 and not on the FY2025 list; down 1 since FY2022.
39	Follum Hydrologic Solutions, LLC Top agencies Army (Department of the Army)	$824,600	0.7%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 123 since FY2022.
40	The University of Alabama System 2 awardees, including University of Alabama and University of Alabama At Birmingham Top agencies Army (Department of the Army) VA (Department of Veterans Affairs)	$813,000	0.7%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 72 since FY2022.
41	Trustees of the Colorado School of Mines Top agencies Army (Department of the Army)	$801,615	0.7%	Rank history: #33 in FY2021, #17 in FY2022, #5 in FY2024 and #20 in FY2025; down 24 since FY2022.
42	Institute of Gas Technology Top agencies Army (Department of the Army)	$785,593	0.7%	Rank history: not on the FY2021 list, #4 in FY2022 and not on the FY2024–FY2025 lists; down 38 since FY2022.
43	Camp Dresser & Mckee Inc. Through CDM Federal Programs Corporation Top agencies Army (Department of the Army)	$764,832	0.7%	Rank history: #14 in FY2021, #16 in FY2022, #39 in FY2024 and not on the FY2025 list; down 27 since FY2022.
44	Clemson University Top agencies Army (Department of the Army) OSD (Office of the Secretary of Defense)	$754,506	0.7%	Rank history: #70 in FY2021, #46 in FY2022, #28 in FY2024 and not on the FY2025 list; up 2 since FY2022.
45	GSI Environmental Inc. Top agencies Army (Department of the Army) OSD (Office of the Secretary of Defense)	$752,923	0.7%	Rank history: #29 in FY2021, #21 in FY2022, #33 in FY2024 and not on the FY2025 list; down 24 since FY2022.
46	Board of Governers State University System of Florida 2 awardees, including University of Florida and Florida State University Top agencies Army (Department of the Army)	$750,808	0.7%	Rank history: #42 in FY2021, #20 in FY2022, #57 in FY2024 and not on the FY2025 list; down 26 since FY2022.
47	Dragos Inc. Top agencies Army (Department of the Army)	$743,731	0.7%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2024 and not on the FY2025 list; new.
48	The Boeing Company Top agencies Army (Department of the Army)	$735,602	0.7%	Rank history: #50 in FY2021, #85 in FY2022, not on the FY2024 list and #70 in FY2025; up 37 since FY2022.
49	Frontier Precision, Inc. Top agencies Commerce (Department of Commerce)	$735,400	0.7%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
50	Artesion Inc Top agencies Army (Department of the Army)	$730,000	0.7%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
51	Mississippi State University Top agencies Army (Department of the Army)	$682,628	0.6%	Rank history: not on the FY2021 list, #61 in FY2022, #41 in FY2024 and not on the FY2025 list; up 10 since FY2022.
52	Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek TNO Top agencies Navy (Department of the Navy)	$679,457	0.6%	Rank history: #35 in FY2021, #48 in FY2022, #20 in FY2024 and not on the FY2025 list; down 4 since FY2022.
53	University of Alaska System Through University of Alaska Fairbanks Top agencies Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$663,504	0.6%	Rank history: #95 in FY2021, #49 in FY2022 and not on the FY2024–FY2025 lists; down 4 since FY2022.
54	Dcms, Inc. Top agencies Army (Department of the Army)	$663,187	0.6%	Rank history: not on the FY2021 list, #100 in FY2022 and not on the FY2024–FY2025 lists; up 46 since FY2022.
55	Texas TECH University System Top agencies Army (Department of the Army)	$645,027	0.6%	Rank history: #68 in FY2021, #45 in FY2022 and not on the FY2024–FY2025 lists; down 10 since FY2022.
56	Massachusetts Institute of Technology Top agencies Army (Department of the Army)	$640,079	0.6%	Rank history: #82 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
57	Ducks Unlimited, Inc. Top agencies Army (Department of the Army)	$589,300	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
58	Georgia TECH Research Corp Top agencies Army (Department of the Army)	$566,312	0.5%	Rank history: not on the FY2021 list, #55 in FY2022 and not on the FY2024–FY2025 lists; down 3 since FY2022.
59	H R Wallingford Group Ltd Through HR Wallingford Limited Top agencies Army (Department of the Army)	$565,418	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
60	Environmental Quality, Inc. Top agencies DOI (Department of the Interior)	$561,486	0.5%	Rank history: not on the FY2021–FY2022 lists, #29 in FY2024 and not on the FY2025 list; new.
61	University of South Alabama Top agencies Army (Department of the Army)	$549,758	0.5%	Rank history: not on the FY2021–FY2022 lists, #86 in FY2024 and not on the FY2025 list; new.
62	Purdue University Top agencies Army (Department of the Army) Commerce (Department of Commerce)	$518,814	0.5%	Rank history: #31 in FY2021, #23 in FY2022, not on the FY2024 list and #95 in FY2025; down 39 since FY2022.
63	Cornell University Top agencies Army (Department of the Army)	$500,000	0.4%	Rank history: #41 in FY2021, #92 in FY2022, #93 in FY2024 and not on the FY2025 list; up 29 since FY2022.
64	Brown University Top agencies Army (Department of the Army)	$500,000	0.4%	Rank history: #87 in FY2021, #82 in FY2022, #34 in FY2024 and #24 in FY2025; up 18 since FY2022.
65	The Royal Institution for the Advancement of Learning Top agencies Army (Department of the Army)	$492,755	0.4%	Rank history: #54 in FY2021, #42 in FY2022 and not on the FY2024–FY2025 lists; down 23 since FY2022.
66	Southwest Research Institute Top agencies Army (Department of the Army)	$431,469	0.4%	Rank history: not on the FY2021 list, #99 in FY2022 and not on the FY2024–FY2025 lists; up 33 since FY2022.
67	The University of Queensland Top agencies Army (Department of the Army)	$401,817	0.4%	Rank history: not on the FY2021 list, #89 in FY2022 and not on the FY2024–FY2025 lists; up 22 since FY2022.
68	Spectris PLC Through Hottinger Bruel & Kjaer Solutions LLC Top agencies Army (Department of the Army)	$399,984	0.4%	Rank history: #71 in FY2021, #83 in FY2022 and not on the FY2024–FY2025 lists; up 15 since FY2022.
69	Colorado State University System Through Colorado State University Top agencies Army (Department of the Army)	$396,896	0.4%	Rank history: #46 in FY2021, #44 in FY2022 and not on the FY2024–FY2025 lists; down 25 since FY2022.
70	National Marine Mammal Foundation, Inc. Top agencies Navy (Department of the Navy)	$380,802	0.3%	Rank history: not on the FY2021 list, #70 in FY2022 and not on the FY2024–FY2025 lists; unchanged since FY2022.
71	Conservation Science Partners, Inc. Top agencies Army (Department of the Army)	$377,451	0.3%	Rank history: not on the FY2021–FY2022 lists, #58 in FY2024 and #74 in FY2025; up 61 since FY2022.
72	Oregon Health & Science University Top agencies Army (Department of the Army)	$369,555	0.3%	Rank history: #34 in FY2021, #24 in FY2022 and not on the FY2024–FY2025 lists; down 48 since FY2022.
73	Dmax Plasma Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$359,759	0.3%	Rank history: #63 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 112 since FY2022.
74	The NDN Companies Top agencies USAF (Department of the Air Force)	$351,021	0.3%	Rank history: #84 in FY2021, #86 in FY2022 and not on the FY2024–FY2025 lists; up 12 since FY2022.
75	Native Hawaiian Community Development Corporation Through GSI North America Inc. Top agencies Army (Department of the Army)	$350,000	0.3%	Rank history: #72 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 53 since FY2022.
76	Fraunhofer-Gesellschaft ZUR Forderung DER Angewandten Forschung E.V. Through Fraunhofer USA Inc. Top agencies Army (Department of the Army)	$350,000	0.3%	Rank history: not on the FY2021–FY2022 lists, #88 in FY2024 and not on the FY2025 list; new.
77	The Trustees of the Stevens Institute of Technology Top agencies Army (Department of the Army)	$345,864	0.3%	Rank history: not on the FY2021–FY2022 lists, #38 in FY2024 and #68 in FY2025; up 49 since FY2022.
78	Virginia Commonwealth University Through Virginia Polytechnic Institute & State University Top agencies Army (Department of the Army)	$340,000	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
79	Arizona State University Top agencies Army (Department of the Army)	$321,576	0.3%	Rank history: not on the FY2021 list, #97 in FY2022, #21 in FY2024 and #27 in FY2025; up 18 since FY2022.
80	University of Southern California Top agencies Army (Department of the Army)	$320,860	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
81	Syracuse University Top agencies Navy (Department of the Navy)	$317,116	0.3%	Rank history: not on the FY2021–FY2022 lists, #82 in FY2024 and #47 in FY2025; up 50 since FY2022.
82	Frontier Environmental Technology LLC Top agencies Army (Department of the Army)	$311,849	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
83	Trustees of Dartmouth College Top agencies Army (Department of the Army)	$307,113	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
84	S&C Electric Company Top agencies Army (Department of the Army)	$305,273	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 68 since FY2022.
85	Electric Power Research Institute Inc. Top agencies Army (Department of the Army)	$294,252	0.3%	Rank history: #64 in FY2021, #27 in FY2022 and not on the FY2024–FY2025 lists; down 58 since FY2022.
86	University of Washington Top agencies Navy (Department of the Navy) Army (Department of the Army)	$293,730	0.3%	Rank history: #25 in FY2021, #79 in FY2022 and not on the FY2024–FY2025 lists; down 7 since FY2022.
87	Earthbalance Corporation Top agencies DOI (Department of the Interior)	$289,402	0.3%	Rank history: not on the FY2021–FY2022 lists, #80 in FY2024 and #91 in FY2025; new.
88	University of Rhode Island Top agencies Army (Department of the Army)	$289,311	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 26 since FY2022.
89	350Solutions Inc. Top agencies Army (Department of the Army)	$282,282	0.3%	Rank history: not on the FY2021–FY2022 lists, #49 in FY2024 and not on the FY2025 list; up 88 since FY2022.
90	University of Notre Dame DU Lac Top agencies Army (Department of the Army)	$268,798	0.2%	Rank history: #74 in FY2021, #59 in FY2022 and not on the FY2024–FY2025 lists; down 31 since FY2022.
91	Heat Light & Sound Research Inc. Top agencies Army (Department of the Army)	$264,938	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 17 since FY2022.
92	Alaska Biomap, Inc. Top agencies DOT (Department of Transportation)	$264,084	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 48 since FY2022.
93	Drexel University Top agencies Army (Department of the Army)	$259,402	0.2%	Rank history: #61 in FY2021, #34 in FY2022, #42 in FY2024 and not on the FY2025 list; down 59 since FY2022.
94	Simetri, Inc. Top agencies Army (Department of the Army)	$255,364	0.2%	Rank history: #16 in FY2021, #43 in FY2022 and not on the FY2024–FY2025 lists; down 51 since FY2022.
95	O'Brien & Gere Engineers Inc. 2 awardees, including Ramboll Americas Engineering Solutions, Inc. and Ramboll US Consulting, Inc. Top agencies Army (Department of the Army)	$252,707	0.2%	Rank history: not on the FY2021 list, #93 in FY2022 and not on the FY2024–FY2025 lists; down 2 since FY2022.
96	Aquagga Inc. Top agencies Army (Department of the Army)	$250,000	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
97	ADA Technologies, LLC Top agencies Army (Department of the Army)	$249,999	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
98	University of Missouri System 2 awardees Top agencies Army (Department of the Army)	$249,994	0.2%	Rank history: #89 in FY2021, #76 in FY2022 and not on the FY2024–FY2025 lists; down 22 since FY2022.
99	Innovative Materials & Processes Inc Top agencies Army (Department of the Army)	$249,984	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
100	Decision.partners Inc. Top agencies Army (Department of the Army)	$249,900	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.

Show 75 more

100 of 205 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC AH

Code	Net obligations	Largest contractor
AH12 Natural Resources and Environment R&D Services; Water Resources; Applied Research	$32,831,821	Bay West LLC
AH51 Natural Resources and Environment R&D Services; Other Natural Resources; Basic Research	$14,630,267	The University of Iowa
AH91 R&D – Environmental Protection: Other (Basic Research)	$11,956,685	State of California Controllers Office
AH21 Natural Resources and Environment R&D Services; Conservation and Land Management; Basic Research	$8,011,093	The Regents of the University of Colorado

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 $112 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 2023 ran Oct 1, 2022 – Sep 30, 2023. 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 FY2022. "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 FY2022 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 AH contractors in FY2023?

1. Bay West LLC ($10M), 2. University System of Maryland ($4.98M), 3. EA Engineering, Science, and Technology, Inc., PBC ($4.58M), 4. Woolpert, Inc. ($4.4M), 5. G.d.o., Inc. ($2.6M), 6. Credere Associates, LLC ($2.57M), 7. Ball Corp ($2.5M), 8. Northrop Grumman Corporation ($2.5M), 9. The Regents of the University of Colorado ($2.28M), 10. Nevada State Veterans Home ($2.06M).

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