PSC codes › H391
PSC H391 — Inspection: Fuels, Lubricants, Oils, and Waxes: federal contracts
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What PSC H391 covers
Description: Inspection and Laboratory Services (except medical/dental): Fuels, Lubricants, Oils, and Waxes
Includes: Commercial Testing and Laboratory Services
Excludes: Medical and Dental Laboratory Services
Official definition: GSA PSC Manual (PSC April 2025.xlsx), acquisition.gov/psc-manual. Category: Equipment Related Services › Quality Control.
Who is winning new PSC H391 work
Contractors ranked by obligations on awards that started FY2024–FY2027 to date.
| Contractor | Obligations | Awards |
|---|---|---|
| INTERSPEC, LLC | $2.8M | 28 |
| CAYUSE FEDERAL SERVICES LLC | $1.4M | 1 |
| SONOL ISRAEL LTD. | $1.0M | 13 |
| JBW GROUP LLC | $1.0M | 1 |
| SAGE, LLC | $787K | 4 |
| PAZ OIL COMPANY LIMITED | $782K | 8 |
| ARCADIS CONSULTING (UK) LIMITED | $619K | 3 |
| BETHAMY, INC. | $416K | 1 |
| I-2-I SOLUTIONS, INC. | $343K | 1 |
| INDEPENDENCE CONSTRUCTORS INC | $286K | 2 |
How competitive is PSC H391?
- 74.4% of obligations on these awards were competed.
- 9.2% of competed awards that report offers drew a single offer (n=76).
- 75.5% went to small businesses.
- The five largest contractors hold 64.0% across 36 contractors.
NAICS codes used on PSC H391 awards
| NAICS | Industry | Share |
|---|---|---|
| 541990 | All Other Professional, Scientific, and Technical Services | 44.4% |
| 488490 | Other Support Activities for Road Transportation | 13.1% |
| 424710 | Petroleum Bulk Stations and Terminals | 12.2% |
| 541380 | Testing Laboratories and Services | 8.4% |
| 237120 | Oil and Gas Pipeline and Related Structures Construction | 5.2% |
| 457210 | Fuel Dealers | 5.1% |
| 424720 | Petroleum and Petroleum Products Merchant Wholesalers (Except Bulk Stations and Terminals) | 3.8% |
| 221112 | Fossil Fuel Electric Power Generation | 3.1% |
Related PSC codes
J091 Maintenance, Repair and Rebuilding of Equipment: Fuels, Lubricants, Oils, and Waxes · Z2JZ Repair or Alteration of Miscellaneous Buildings · Z1JZ Maintenance of Miscellaneous Buildings · R425 Engineering and Technical Services · J045 Maint/Repair/Rebuild of Equipment: Plumbing, Heating, and Waste Disposal Equipment · C1QA Restoration of Real Property (Public or Private) · R499 Other Professional Services · J059 Maint/Repair/Rebuild of Equipment: Electrical and Electronic Equipment Components
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