PSC codes › B503
PSC B503 — Archeological/Paleontological Studies: federal contracts
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What PSC B503 covers
Description: Archeological/Paleontological Studies
Official definition: GSA PSC Manual (PSC April 2025.xlsx), acquisition.gov/psc-manual. Category: Professional Services › Management Advisory Services.
Who is winning new PSC B503 work
Contractors ranked by obligations on awards that started FY2024–FY2027 to date.
| Contractor | Obligations | Awards |
|---|---|---|
| NEW SOUTH ASSOCIATES, INC. | $16.9M | 35 |
| STAMPEDE VENTURES, INC. | $7.1M | 4 |
| STATISTICAL RESEARCH INC | $6.5M | 20 |
| FAR WESTERN ANTHROPOLOGICAL RESEARCH GROUP, INC. | $6.2M | 16 |
| BROCKINGTON AND ASSOCIATES, INC. | $3.3M | 26 |
| ENVIRONMENTAL ASSESSMENT SERVICES, LLC | $2.6M | 3 |
| ENVIRONMENTAL RESEARCH GROUP, L.L.C. | $2.5M | 12 |
| SOUTHEASTERN ARCHAEOLOGICAL RESEARCH, LLC | $2.4M | 7 |
| R. CHRISTOPHER GOODWIN & ASSOCIATES, INC. | $1.9M | 12 |
| HARRIS ENVIRONMENTAL GROUP INC | $1.9M | 3 |
How competitive is PSC B503?
- 82.7% of obligations on these awards were competed.
- 28.6% of competed awards that report offers drew a single offer (n=413).
- 91.8% went to small businesses.
- The five largest contractors hold 42.7% across 150 contractors.
NAICS codes used on PSC B503 awards
| NAICS | Industry | Share |
|---|---|---|
| 541720 | Research and Development in the Social Sciences and Humanities | 53.7% |
| 541620 | Environmental Consulting Services | 31.1% |
| 115310 | Support Activities for Forestry | 4.6% |
| 541690 | Other Scientific and Technical Consulting Services | 2.2% |
| 541990 | All Other Professional, Scientific, and Technical Services | 2.0% |
| 562910 | Remediation Services | 1.6% |
| 541370 | Surveying and Mapping (Except Geophysical) Services | 1.5% |
| 712120 | Historical Sites | 1.1% |
Related PSC codes
R499 Other Professional Services · F099 Other Natural Resources and Conservation Services · B510 Environmental Studies and Assessments · F999 Other Environmental Services, Studies, and Analytical Support · B599 Other Special Studies and Analysis · B521 Historical Studies · C219 Other Architect and Engineering Services · R404 Land Surveys, Cadastral Services (non-construction)
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