Code facts
Spend category
Professional Services
Management Advisory Services
PSC codes and definitions come from the GSA PSC Manual and contract spending from SAM.gov/FPDS.
Market summary
Open opportunities
0
5 notices posted in the last 90 days
Contract awards
27
In the last 12 months
Obligated
$9,991,819
In the last 12 months, net of deobligations
Top buying agencies by obligations
Rank
Agency
Obligated, FY2026–FY2027
Share
1
Department of the Interior
$6,257,257
59%
2
Environmental Protection Agency
$2,279,889
22%
3
Air Force
Department of Defense
$743,606
7%
4
Department of Veterans Affairs
$393,293
4%
5
Department of Commerce
$150,000
1%
6
Department of the Navy
Department of Defense
$117,888
1%
7
Department of the Army
Department of Defense
$65,359
1%
8
Defense Health Agency
Department of Defense
$58,493
1%
9
National Archives and Records Administration
$48,808
<1%
10
Department of the Treasury
$42,777
<1%
Top contractors by obligations
Rank
Contractor
Obligated, FY2026–FY2027
Share
1
University Of California, Davis
$2,722,726
26%
2
General Dynamics Information Technology, Inc.
$2,178,924
21%
3
Air Resource Specialists, Inc.
$1,891,133
18%
4
Nevada System Of Higher Education
$773,310
7%
5
H & L Environmental Services, LLC
$743,606
7%
6
Research Triangle Institute
$420,075
4%
7
ERO Resources Corporation
$305,220
3%
8
Trine Environmental Inc.
$295,948
3%
9
WSP USA Inc.
$252,707
2%
10
Ultrapure Air, LLC
$150,000
1%
Contract opportunities
No notices under PSC B502 are open now. These are the newest.
Notice
Posted
Due
Dust Hazard Analysis
Solicitation · Naval Supply Systems Command (Navy) · N0018926QL370
Sep 1, 2026
Sep 8, 2026
B502--NRM service - 528A8-18-801 - air monitor cardiac cath & VIR - FY27 NRM
Solicitation · Veterans Integrated Service Network 2 (VHA)
Aug 24, 2026
Sep 8, 2026
GIMC - Air Quality Testing
Solicitation · Indian Health Service · 75H71026Q00256
Aug 17, 2026
Sep 2, 2026
USMMA - Industrial Hygienist
Pre-Solicitation · Maritime Administration
Jul 27, 2026
Aug 11, 2026
BPA Call Order Exceeding $20, 000 Synopsis Requisition 1174715
Special Notice · Forest Service
Jul 13, 2026
Jul 22, 2026
GIMC - Air Quality Testing
Pre-Solicitation · Indian Health Service · IHS1529378
Jul 6, 2026
Jul 10, 2026
Industrial Hygiene Testing and Survey
Award Notice · Defense Finance and Accounting Service · 3003750
Jun 23, 2026
—
Air Quality Assessment Phase 6
Pre-Solicitation · Immediate Office of the Secretary of Transportation
May 26, 2026
May 28, 2026
NR-ARD-271 improve ION analysis RFP
Solicitation · National Office (NPS)
May 20, 2026
Jun 22, 2026
DPW - Air Emission Source Testing
Solicitation · Pacific Air Forces (USAF)
Apr 23, 2026
May 21, 2026
Industrial Hygiene Testing and Survey
Solicitation · Defense Finance and Accounting Service · HQ042326QE044
Apr 13, 2026
May 12, 2026
NR-ARD-269 improve OPS & filter analysis
Solicitation · National Office (NPS) · 140P2126R0005
Mar 2, 2026
Apr 3, 2026
Defense Compressed Air Test Kits and Testing Services Follow-on
Pre-Solicitation · Naval Sea Systems Command (Navy) · N61331-26-R-SF10
Feb 23, 2026
Mar 9, 2026
Models for central spatial orientation vestibular-visual processing
Special Notice · Shared Services Center
Jan 28, 2026
Feb 2, 2026
DFAS CO Air Quality Study
Pre-Solicitation · Defense Finance and Accounting Service
Jan 27, 2026
Feb 10, 2026
Defense Compressed Air Test Kits and Testing Services Follow-on
Pre-Solicitation · Naval Sea Systems Command (Navy) · N61331-26-S-NQ10
Jan 22, 2026
Feb 10, 2026
2024 silica testing/ratification
Award Notice · Nevada Region (BLM)
Sep 15, 2025
—
Breathing Air Samples
Solicitation · Naval Air Systems Command (Navy)
Aug 27, 2025
Sep 16, 2025
Dust Hazard Analysis
Solicitation · Naval Supply Systems Command (Navy) · N0018925Q0439
Aug 13, 2025
Aug 19, 2025
NR-ARD-269 improve OPS & filter analysis
Special Notice · National Office (NPS) · 140P2125R0058
Jul 16, 2025
Jul 30, 2025
Silica testing burning man event 2025
Solicitation · Nevada Region (BLM)
Jul 14, 2025
Aug 6, 2025
Grade D Air Testing
Solicitation · Naval Air Systems Command (Navy)
Jul 3, 2025
Jul 11, 2025
B502--562910 | Abatement Monitoring and Hazardous Material Testing Wilkes-Barre VA Medical Center | SDVOSB Set-aside | Award Notice
Award Notice · Veterans Integrated Service Network 4 (VHA)
Jun 23, 2025
—
Air Quality Assessment for BOS Phase 5
Pre-Solicitation · Immediate Office of the Secretary of Transportation
May 16, 2025
May 20, 2025
B502--562910 | Abatement Monitoring and Hazardous Material Testing Wilkes-Barre VA Medical Center | SDVOSB Set-aside | Amendment 1
Solicitation · Veterans Integrated Service Network 4 (VHA)
May 13, 2025
May 30, 2025
NR-ARD-07 gpmp network operations IDIQ
Solicitation · National Park Service
Apr 30, 2025
May 29, 2025
B502-- AIR QUALITY TESTING for DC VAMC
Solicitation · Veterans Integrated Service Network 5 (VHA) · 36C24525Q0392
Mar 17, 2025
Apr 4, 2025
B502-- AIR QUALITY TESTING for DC VAMC
Pre-Solicitation · Veterans Integrated Service Network 5 (VHA) · 36C24525Q0392
Mar 17, 2025
Apr 4, 2025
B502--Air Emissions Survey Inventory Aleda E. Lutz VA Medical Center
Solicitation · Veterans Integrated Service Network 10 (VHA) · 36C25025Q0410
Mar 17, 2025
Mar 28, 2025
B502--Air Emissions Survey Inventory Aleda E. Lutz VA Medical Center
Pre-Solicitation · Veterans Integrated Service Network 10 (VHA) · 36C25025Q0410
Mar 17, 2025
Mar 28, 2025
B502--Air Emissions Inventory Aleda E. Lutz VA Medical Center (Saginaw, MI)
Pre-Solicitation · Veterans Integrated Service Network 10 (VHA)
Feb 27, 2025
Mar 13, 2025
Indoor air quality monitoring
Award Notice · Veterans Integrated Service Network 22 (VHA) · 36C26224C0262
Aug 14, 2024
—
Air Emissions for Kadena Military Family Housing
Solicitation · Pacific Air Forces (USAF)
Jul 2, 2024
Jul 17, 2024
Sources Sought for Method TO-15 Analytical Services Contract
Pre-Solicitation · EPA Region 2
Jun 28, 2024
Jul 26, 2024
Indoor air quality monitoring
Solicitation · Veterans Integrated Service Network 22 (VHA) · 36C26224Q1258
Jun 14, 2024
Jun 28, 2024
Air Emissions
Solicitation · Bureau of Engraving and Printing · 2031ZA24Q00228
Jun 12, 2024
Jul 1, 2024
B502--WNY Air Monitoring & Hazardous Material Sampling IDIQ
Award Notice · Veterans Integrated Service Network 2 (VHA) · 36C24224Q0327
Jun 7, 2024
—
Indoor air quality monitoring
Pre-Solicitation · Veterans Integrated Service Network 22 (VHA) · 36C26224Q1060
Apr 24, 2024
May 3, 2024
Air Emissions
Solicitation · Bureau of Engraving and Printing · 2031ZA24Q00034
Apr 4, 2024
Apr 25, 2024
B502--Clean Air Act Reporting and Compliance Services
Pre-Solicitation · Veterans Integrated Service Network 1 (VHA)
Mar 20, 2024
Mar 25, 2024
B502--WNY Air Monitoring & Hazardous Material Sampling IDIQ
Solicitation · Veterans Integrated Service Network 2 (VHA) · 36C24224Q0327
Mar 12, 2024
Apr 5, 2024
Procurement for asbestos/lead sampling services fo
Solicitation · Social Security Administration
Feb 22, 2024
Mar 4, 2024
Active Upper-Room UVGI Technology Demonstrations
Award Notice · US Army Corps of Engineers
Feb 21, 2024
—
Brca-air quality research services
Solicitation · Intermountain Region (NPS)
Jan 30, 2024
Feb 12, 2024
Source Sought
Pre-Solicitation · National Park Service
Jan 30, 2024
Feb 14, 2024
Gaseous Pollutant Monitoring Program (GPMP)
Pre-Solicitation · National Park Service
Jan 29, 2024
Feb 13, 2024
B502--WNY Air Monitoring & Hazardous Material Sampling IDIQ
Pre-Solicitation · Veterans Integrated Service Network 2 (VHA) · 36C24224Q0268
Jan 19, 2024
Feb 2, 2024
Procurement for asbestos, lead, and mold sampling services for the Social Secur
Pre-Solicitation · Social Security Administration
Jan 8, 2024
Jan 12, 2024
Recent contract awards
Award
Awarded
Obligated
Funding for air monitoring and material testing services
36C24227N0174 · Trine Environmental Inc. · Veterans Integrated Service Network 2 (VHA)
Oct 15, 2026
$75,000
Air monitoring services for CC/VIR project at albany VAMC
36C24227P0032 · Trine Environmental Inc. · Veterans Integrated Service Network 2 (VHA)
Oct 1, 2026
$31,015
Rochester institute of technology - access to eclimatenotebook and calibration services for PEM2 dataloggers
88310326P00020 · Rochester Institute Of Technology · National Archives and Records Administration
Sep 30, 2026
$46,300
Dryfork, PEA ridge, tin can cultural class II inventory
140L2626F0049 · ERO Resources Corporation · Idaho Region (BLM)
Sep 17, 2026
$305,220
Vpih services ID/R contract.
36C25026N0701 · Sage-Efs JV · Veterans Integrated Service Network 10 (VHA)
Sep 2, 2026
$2,736
Specialized aircraft and remote sensing measurement services to support NOAA atmospheric research.
1333MJ26P0058 · Ultrapure Air, LLC · National Oceanic and Atmospheric Administration
Aug 31, 2026
$150,000
Asbestos abatement monitoring and hazardous materials testing at the wilkes-barre VA healthcare system.
36C24426N1033 · Trine Environmental Inc. · Veterans Integrated Service Network 4 (VHA)
Aug 27, 2026
$11,920
Procure a prototype NOY ambient monitor and manufacturer support, installation, service, and training, for deployment…
68HERL26P0264 · Direct Optics Inc. · Environmental Protection Agency
Aug 24, 2026
$62,500
Third party air monitoring services during abatement/removal of asbestos-containing materials at the wilmington VA…
36C24426F0377 · Mabbett & Associates, Inc. · Veterans Integrated Service Network 4 (VHA)
Aug 8, 2026
$14,125
Water sampling at archives one (A1) & archives two (A2) facilities
88310326F00162 · Ati, Inc. · National Archives and Records Administration
Jul 30, 2026
$2,508
Contract obligations by fiscal year
Fiscal year
Obligated
FY2027
To date
$104,530
FY2026
$10,108,322
FY2025
$9,279,608
FY2024
$11,024,482
FY2023
$10,860,285
Rank
NAICS code
Obligated, FY2026–FY2027
Share
1
541380 Testing Laboratories and Services
$4,340,956
41%
2
541613 Marketing Consulting Services
$2,178,924
21%
3
541620 Environmental Consulting Services
$2,132,221
20%
4
562910 Remediation Services
$1,011,047
10%
5
115310 Support Activities for Forestry
$305,220
3%
6
541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
$150,000
1%
7
541720 Research and Development in the Social Sciences and Humanities
$52,602
<1%
8
541990 All Other Professional, Scientific, and Technical Services
$45,500
<1%
9
334516 Analytical Laboratory Instrument Manufacturing
$38,466
<1%
10
541690 Other Scientific and Technical Consulting Services
$2,112
<1%
Contract obligations by state
Rank
Place of performance
Obligated, last 12 months
Share
1
California
$2,777,927
27%
2
District of Columbia
$2,196,100
21%
3
Colorado
$1,913,282
19%
4
Nevada
$769,638
7%
5
Georgia
$743,606
7%
6
North Carolina
$439,847
4%
7
New York
$338,494
3%
8
Montana
$305,220
3%
9
Pennsylvania
$275,381
3%
10
Connecticut
$66,000
1%
11
Texas
$58,493
1%
12
Maryland
$50,920
<1%
13
Illinois
$42,777
<1%
14
Delaware
$14,125
<1%
15
Ohio
$14,000
<1%
16
Oklahoma
$12,757
<1%
17
Indiana
$6,967
<1%
Show all 17
Shares are of everything obligated under PSC B502 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Quick answers
What is PSC B502?
PSC B502 is Air Quality Analysis, a service code in PSC B, Special Studies/Analysis, Not R&D.
How many government contracts for air quality analysis are there?
5 notices under PSC B502 were posted in the last 90 days, and none are open now. Federal agencies awarded 27 contracts under PSC B502 in the last 12 months, obligating $9,991,819.
How much do federal agencies spend under PSC B502?
Federal contracts under PSC B502 obligated $9,279,608 in fiscal year 2025 and $41,377,227 in fiscal years 2023 through 2027.
Who are the largest contractors under PSC B502?
The contractors with the most obligated under PSC B502 in fiscal years 2026 and 2027 are University Of California, Davis ($2,722,726); General Dynamics Information Technology, Inc. ($2,178,924); and Air Resource Specialists, Inc. ($1,891,133).
Which agencies buy the most under PSC B502?
The agencies that obligated the most under PSC B502 in fiscal years 2026 and 2027 are Department of the Interior ($6,257,257), Environmental Protection Agency ($2,279,889) and Air Force ($743,606).
Which NAICS codes are used with PSC B502?
The NAICS codes with the most obligated under PSC B502 in fiscal years 2026 and 2027 are 541380 Testing Laboratories and Services, 541613 Marketing Consulting Services and 541620 Environmental Consulting Services.
Where is the work under PSC B502 performed?
By place of performance, the states with the most contract obligations under PSC B502 over the last 12 months are California ($2,777,927), the District of Columbia ($2,196,100) and Colorado ($1,913,282).
What is the latest contract opportunity under PSC B502?
The latest contract opportunity under PSC B502 is Dust Hazard Analysis, solicitation from Naval Supply Systems Command (Navy), posted September 1, 2026.
On GovTribe
See everything under PSC B502
Federal contract opportunities, awards and IDVs under this code
Funding analysis by contractor, agency and set-aside
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