PSC B519: Special Studies/Analysis – Geotechnical
B519 is the product and service code (PSC) federal agencies use for “Special Studies/Analysis – Geotechnical”, in the “Special Studies – Not R and D” 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, FY2025
- $4.6 million
- Share of contract dollars to small businesses, since FY2024
- 73%
Open count as of Oct 28, 2026, 5:43 PM ET. The search counts live, so its total can differ by a notice or two.
Open PSC B519 contracts with 2+ days to respond
- Subsurface Investigation Atlantic Intracoastal Waterway Disposal Area 60
✦ Sources sought (market research, not a solicitation): the Army Corps of Engineers, Wilmington District, wants to find firms that can do a subsurface (underground) soil…
Due in 9 daysNov 6, 2026, 2:00 PM ESTThe AI summary flags this date. Check SAM.gov.
Where B519 sits in the PSC Manual
- Category: Service
- Group B: Special Studies/Analysis, Not R&D
- Group B5: Special Studies – Not R and D
- Code B519: Special Studies/Analysis – Geotechnical
NAICS codes used with PSC B519
The NAICS code on a contract sets the size standard for who counts as small. These are the codes agencies pair with B519 most often:
| NAICS | Industry | Spent, last 3 years | Open with PSC B519 |
|---|---|---|---|
| 541380 | Testing Laboratories and Services | $8.2 million | — |
| 541360 | Geophysical Surveying and Mapping Services | $4.6 million | 1 |
| 541511 | Custom Computer Programming Services | $2.5 million | — |
| 541330 | Engineering Services | $1.3 million | — |
| 541370 | Surveying and Mapping (except Geophysical) Services | $714,493 | — |
| 213115 | Support Activities for Nonmetallic Minerals (except Fuels) Mining | $536,872 | — |
Open contracts under each code, with any PSC: NAICS 541380 · NAICS 541360 · NAICS 541511 · NAICS 541330 · NAICS 541370 · NAICS 213115
Who buys under PSC B519
Agencies with the most contract dollars under B519 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 | $8.5 million |
| Department of the Air Force | $3.9 million |
| Immediate Office of the Secretary of Transportation | $1.4 million |
| U.S. Customs and Border Protection | $1.2 million |
| Forest Service | $1.2 million |
| Federal Highway Administration | $723,145 |
| Federal Aviation Administration | $712,693 |
| Department of Veterans Affairs | $108,886 |
Federal spending under PSC B519 by year
| Fiscal year | Contract obligations |
|---|---|
| FY2024 | $7.2 million |
| FY2025 | $4.6 million |
| FY2026 (incomplete) | $5.9 million |
Headline figures use FY2025, 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 B519 contracts
| Company | Obligated, last 3 years |
|---|---|
| Fugro USA Land, Inc. | $4.3 million |
| Tactica Management Services LLC | $3.9 million |
| Ardent Management Consulting, LLC | $2.5 million |
| Eustis Engineering, L.L.C. | $2.5 million |
| Central Geotechnical Services, LLC | $959,176 |
| Ahtna Infrastructure & Technologies LLC | $711,293 |
| Heesong Geotek Co., LTD. | $536,872 |
| Richard Catlin & Associates Inc | $484,294 |
| Vine Laboratories Inc | $420,632 |
| Geolines, LLC | $311,157 |
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 B519 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:
- 541380 Testing Laboratories and Services: who won recently · contracts ending in the next 12 months · planned buys · large primes that subcontract
- 541360 Geophysical Surveying and Mapping Services: planned buys · large primes that subcontract
- 541511 Custom Computer Programming Services: who won recently · contracts ending in the next 12 months · planned buys · large primes that subcontract
Related PSC codes
- B502 Special Studies/Analysis – Air Quality
- B503 Special Studies/Analysis – Archeological/Paleontological
- B504 Special Studies/Analysis – Chemical/Biological
- B505 Special Studies/Analysis – Cost Benefit
- B506 Special Studies/Analysis – Data (Other Than Scientific)
- B507 Special Studies/Analysis – Economic
- B509 Special Studies/Analysis – Endangered Species: Plant/Animal
- B510 Special Studies/Analysis – Environmental Assessments
- B513 Special Studies/Analysis – Feasibility (Non-Construction)
- B516 Special Studies/Analysis – Animal/Fisheries
Frequently asked questions
What is PSC B519?
B519 is the service code in the federal Product and Service Code (PSC) Manual named “Special Studies/Analysis – Geotechnical”, under B (Special Studies/Analysis, Not R&D) and B5 (Special Studies – Not R and D). 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 B519?
Most federal contract dollars under PSC B519 go with NAICS 541380 (Testing Laboratories and Services), 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 B519?
Contract opportunities are posted on SAM.gov with their PSC and NAICS codes. 1 open notice uses PSC B519 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.