PSC Z1GC: Maintenance of Fuel Storage Buildings
Z1GC is the product and service code (PSC) federal agencies use for maintenance of fuel storage buildings, in the maint, alter, repair buildings 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
- 3
- Spending, FY2026
- $4.5 million
- Share to small businesses
- 42%
Open contracts with PSC Z1GC, due soonest
- Fuel Tank Inspection
Due in 5 daysOct 16, 2026
- ADEQ Compliance Underground Fuel Storage
✦ The VA's Network Contract Office 22 wants a certified contractor to test, inspect, certify and report on the underground diesel fuel storage tanks (USTs) at the Phoenix VA Health…
Due in 13 daysOct 23, 2026
- Vandenberg SFB Tank Inspection
Due in 20 daysOct 30, 2026
Where Z1GC sits in the PSC Manual
- Category: Service
- Group Z: Maint, Repair, Alter Real Property
- Group Z1: Maint, Alter, Repair Buildings
- Code Z1GC: Maintenance of Fuel Storage Buildings
NAICS codes used with PSC Z1GC
The NAICS code on a contract sets the size standard for who counts as small. These are the codes agencies pair with Z1GC most often:
| NAICS | Industry | Spent, last 3 years |
|---|---|---|
| 236220 | Commercial and Institutional Building Construction | $13.1 million |
| 541990 | All Other Professional, Scientific, and Technical Services | $3.6 million |
| 238210 | Electrical Contractors and Other Wiring Installation Contractors | $1 million |
| 811310 | Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance | $846,344 |
| 238220 | Plumbing, Heating, and Air-Conditioning Contractors | $811,846 |
| 213112 | Support Activities for Oil and Gas Operations | $715,693 |
| 493190 | Other Warehousing and Storage | On 1 open |
Who buys under PSC Z1GC
Agencies with the most contract dollars under Z1GC over the last three fiscal years, per USAspending.gov:
| Agency | Obligated |
|---|---|
| Department of the Army | $9.5 million |
| Department of the Air Force | $7.3 million |
| Department of the Navy | $3.3 million |
| Department of Veterans Affairs | $397,869 |
| U.S. Coast Guard | $237,689 |
| Environmental Protection Agency | $37,800 |
| Department of State | $13,371 |
On open notices right now, the most Z1GC work comes from Dept of Defense and Department of Veterans Affairs.
Federal spending under PSC Z1GC by year
| Fiscal year | Contract obligations |
|---|---|
| FY2024 | $7.6 million |
| FY2025 | $8.7 million |
| FY2026 | $4.5 million |
| FY2027 (so far) | $0 |
Who wins PSC Z1GC contracts
| Company | Obligated, last 3 years |
|---|---|
| Krima Construction Corp. | $4.5 million |
| Weston Solutions Inc | $4.3 million |
| WSP USA Environment & Infrastructure Inc. | $2.2 million |
| Interspec, LLC | $2.1 million |
| Kamikita Kensetsu Co.,LTD. | $1.4 million |
| Allied Pacific Builders Inc | $689,920 |
| GY6, LLC | $579,008 |
| Sage, LLC | $551,128 |
| Pacific Engineering & Consulting, LLC | $497,116 |
| Suzuki Kensetsu Kogyo Co.,LTD. | $446,154 |
Related PSC codes
- Z111 Maint – Rep – Alt/Office BLDGS
- Z112 Maint – Rep – Alt/Conf Space & Fac
- Z119 Maint – Rep – Alt/Other Admin BLDGS
- Z121 Maint – Rep – Alt/Air Traffic Towers
- Z122 Maint – Rep – Alt/Air Traffic TNG Fac
- Z123 Maint – Rep – Alt/Radar & Nav Fac
- Z124 Maint – Rep – Alt/Airport Runways
- Z125 Maint – Rep – Alt/Airport Terminals
- Z126 Maint – Rep – Alt/Missile Systems Fac
- Z127 Maint – Rep – Alt/Elct & Comm Sys Fac
Frequently asked questions
What is PSC Z1GC?
Z1GC is the service code in the federal Product and Service Code (PSC) Manual for maintenance of fuel storage buildings, under Z (Maint, Repair, Alter Real Property) and Z1 (Maint, Alter, Repair Buildings). 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 Z1GC?
Most federal contract dollars under PSC Z1GC go with NAICS 236220 (Commercial and Institutional Building Construction), 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 Z1GC?
Contract opportunities are posted on SAM.gov with their PSC and NAICS codes. 3 open notices use PSC Z1GC right now. FedReady can match new ones to your business and email you, free.