PSC AH41: Natural Resources and Environment R&D Services; Pollution Control and Abatement; Basic Research
AH41 is the product and service code (PSC) federal agencies use for “Natural Resources and Environment R&D Services; Pollution Control and Abatement; Basic Research”, in the “R&D – Noise 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
- 1
- Federal contract spending, FY2024
- $214,424
- Share of contract dollars to small businesses, since FY2024
- 39%
Open count as of Nov 6, 2026, 2:21 PM ET. The search counts live, so its total can differ by a notice or two.
Open PSC AH41 contracts with 2+ days to respond
- Phase I Environmental Site Assessment at Lower Grey Cloud Slough Islands
Due in 5 daysNov 11, 2026, 3:00 PM CST
Where AH41 sits in the PSC Manual
- Category: Research and Development
- Group AH: Natural Resources and Environment R&D Services
- Group AH4: R&D – Noise Pollution
- Code AH41: Natural Resources and Environment R&D Services; Pollution Control and Abatement; Basic Research
NAICS codes used with PSC AH41
The NAICS code on a contract sets the size standard for who counts as small. These are the codes agencies pair with AH41 most often:
| NAICS | Industry | Spent, last 3 years | Open with PSC AH41 |
|---|---|---|---|
| 541713 | Research and Development in Nanotechnology | $167,873 | — |
| 541380 | Testing Laboratories and Services | $51,651 | — |
| 488330 | Navigational Services to Shipping | $35,232 | — |
| 541620 | Environmental Consulting Services | — | 1 |
Open contracts under each code, with any PSC: NAICS 541713 · NAICS 541380 · NAICS 488330 · NAICS 541620
Who buys under PSC AH41
Agencies with the most contract dollars under AH41 over the last three fiscal years, per USAspending.gov. Each name links to that agency's open contracts and buying history:
| Agency | Obligated |
|---|---|
| U.S. Coast Guard | $203,105 |
| Department of Veterans Affairs | $51,651 |
Federal spending under PSC AH41 by year
| Fiscal year | Contract obligations |
|---|---|
| FY2024 | $214,424 |
| FY2025 | $0 |
| FY2026 (incomplete) | $35,232 |
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.
Who wins PSC AH41 contracts
| Company | Obligated, last 3 years |
|---|---|
| American Robotics, Inc. | $167,873 |
| South Coast Air Quality Management District | $51,651 |
| Marine Exchange of the San Francisco Bay Region | $35,232 |
Linked names have a FedReady profile, which shows the NAICS codes a business is registered as small under. Most large companies have none.
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 AH41 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:
- 541713 Research and Development in Nanotechnology: large primes that subcontract. Not available for 541713 yet: who won recently, contracts ending in the next 12 months or planned buys. Its NAICS page shows who buys it.
- 541380 Testing Laboratories and Services: who won recently · contracts ending in the next 12 months · planned buys · large primes that subcontract
- 488330 Navigational Services to Shipping: planned buys · large primes that subcontract
Related PSC codes
- AH42 Natural Resources and Environment R&D Services; Pollution Control and Abatement; Applied Research
- AH43 Natural Resources & Environment R&D SVCS; Pollution Control & Abatement; Experimental Development
- AH44 Natural Resources & Environment R&D SVCS; Pollution Control & Abatement; R&D Administrative Expenses
- AH45 Natural Resources & Environment R&D SVCS; Pollution Control & Abatement; R&D Facilities & Maj Equip
- AH46 R&D – Environmental Protection: Noise Pollution (Management/Support)
- AH47 R&D – Environmental Protection: Noise Pollution (Commercialized)
Frequently asked questions
What is PSC AH41?
AH41 is the research and development code in the federal Product and Service Code (PSC) Manual named “Natural Resources and Environment R&D Services; Pollution Control and Abatement; Basic Research”, under AH (Natural Resources and Environment R&D Services) and AH4 (R&D – Noise 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 AH41?
Most federal contract dollars under PSC AH41 go with NAICS 541713 (Research and Development in Nanotechnology), 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 AH41?
Contract opportunities are posted on SAM.gov with their PSC and NAICS codes. 1 open notice uses PSC AH41 right now. 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.