PSC AH53: Natural Resources and Environment R&D Services; Other Natural Resources; Experimental Development
AH53 is the product and service code (PSC) federal agencies use for “Natural Resources and Environment R&D Services; Other Natural Resources; Experimental Development”, in the “R&D – Other Pollution” group. Here are the contracts open under it now, the NAICS codes it pairs with, and who buys and wins this work.
- Open contracts now
- 0
- Federal contract spending, FY2024
- $2 million
- Share of contract dollars to small businesses, since FY2024
- 97%
Open count as of Nov 7, 2026, 1:18 AM ET. The search counts live, so its total can differ by a notice or two.
Where AH53 sits in the PSC Manual
- Category: Research and Development
- Group AH: Natural Resources and Environment R&D Services
- Group AH5: R&D – Other Pollution
- Code AH53: Natural Resources and Environment R&D Services; Other Natural Resources; Experimental Development
NAICS codes used with PSC AH53
The NAICS code on a contract sets the size standard for who counts as small. These are the codes agencies pair with AH53 most often:
| NAICS | Industry | Spent, last 3 years | Open with PSC AH53 |
|---|---|---|---|
| 541715 | Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) | $1.9 million | — |
| 541690 | Other Scientific and Technical Consulting Services | $48,693 | — |
| 541612 | Human Resources Consulting Services | $41,694 | — |
Open contracts under each code, with any PSC: NAICS 541715 · NAICS 541690 · NAICS 541612
Who buys under PSC AH53
Agencies with the most contract dollars under AH53 over the last three fiscal years, per USAspending.gov. Each name links to that agency's open contracts and buying history:
| Agency | Obligated |
|---|---|
| Department of the Army | $1.9 million |
| Agency for International Development | $41,694 |
| Department of Veterans Affairs | $29,160 |
Federal spending under PSC AH53 by year
| Fiscal year | Contract obligations |
|---|---|
| FY2024 | $2 million |
| FY2025 | -$13,423 |
| FY2026 (incomplete) | -$0 |
Headline figures use FY2024, the last complete year. FY2026 is still incomplete and will rise until about early January 2027 as Defense data arrives: USAspending.gov publishes Defense contracts 90 days after they're signed. FY2027 began October 1, 2026; it's left out until Defense data for it starts to arrive.
Who wins PSC AH53 contracts
| Company | Obligated, last 3 years |
|---|---|
| Carboncycle LLC | $1.9 million |
| University of South Carolina | $48,693 |
| Domestic Awardees (Undisclosed) | $41,694 |
Large prime contractors (companies that hold the contract with the agency) subcontract part of their work to small businesses. See which primes subcontract, by NAICS code.
Research PSC AH53 work
By the NAICS codes this work goes with, the one with the most spending first: who won recently, contracts ending soon, agencies' planned buys and the large primes that subcontract it, nationwide. Each code shows only the pages that exist for it:
- 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology): who won recently · contracts ending in the next 12 months · planned buys · large primes that subcontract
- 541690 Other Scientific and Technical Consulting Services: who won recently · planned buys · large primes that subcontract
- 541612 Human Resources Consulting Services: planned buys · large primes that subcontract
Related PSC codes
- AH51 Natural Resources and Environment R&D Services; Other Natural Resources; Basic Research
- AH52 Natural Resources and Environment R&D Services; Other Natural Resources; Applied Research
- AH54 Natural Resources & Environment R&D SVCS; Other Natural Resources; R&D Administrative Expenses
- AH55 Natural Resources & Environment R&D SVCS; Other Natural Resources; R&D Facilities & Maj Equip
- AH56 R&D – Other Pollution – MGMT Sup
- AH57 R&D – Other Pollution – Comercliz
Frequently asked questions
What is PSC AH53?
AH53 is the research and development code in the federal Product and Service Code (PSC) Manual named “Natural Resources and Environment R&D Services; Other Natural Resources; Experimental Development”, under AH (Natural Resources and Environment R&D Services) and AH5 (R&D – Other Pollution). Agencies put a PSC on every contract to record what they bought.
What is the difference between a PSC and a NAICS code?
A PSC describes what the government is buying. A NAICS code describes the industry of the business doing the work, and it sets the SBA size standard for small business set-asides. Every contract notice has both.
Which NAICS code goes with PSC AH53?
Most federal contract dollars under PSC AH53 go with NAICS 541715 (Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)), according to USAspending.gov. The contracting officer picks the NAICS code for each solicitation, so check the notice.
How do I find contracts that use PSC AH53?
Contract opportunities are posted on SAM.gov with their PSC and NAICS codes. FedReady can match new ones to your business and email you, free.
Keep going
Sources: SAM.gov Contract Opportunities, USAspending.gov and the PSC Manual. How we count.