PSC Z1KA: Maintenance of Dams
Z1KA is the product and service code (PSC) federal agencies use for maintenance of dams, 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
- $135.6 million
- Share to small businesses
- 43%
Open contracts with PSC Z1KA, due soonest
- 2026-2027 Winter Shotcrete Repair at Eisenhower Lock
✦ The Great Lakes St. Lawrence Seaway Development Corporation (a U.S. DOT agency) wants a contractor to repair damaged concrete with sprayed-on concrete (shotcrete) inside the…
Due in 25 daysNov 4, 2026
- CABLEWAY CRANE REFURBISHMENT
✦ The Bureau of Reclamation (Lower Colorado Region) wants one contractor to refurbish the 150-ton cableway crane at Hoover Dam, near Boulder City, Nevada: replace the main track…
Due in 69 daysDec 18, 2026
Where Z1KA sits in the PSC Manual
- Category: Service
- Group Z: Maint, Repair, Alter Real Property
- Group Z1: Maint, Alter, Repair Buildings
- Code Z1KA: Maintenance of Dams
NAICS codes used with PSC Z1KA
The NAICS code on a contract sets the size standard for who counts as small. These are the codes agencies pair with Z1KA most often:
| NAICS | Industry | Spent, last 3 years |
|---|---|---|
| 237990 | Other Heavy and Civil Engineering Construction | $257.6 million |
| 237130 | Power and Communication Line and Related Structures Construction | $14 million |
| 561990 | All Other Support Services | $13.8 million |
| 238110 | Poured Concrete Foundation and Structure Contractors | $6 million |
| 238290 | Other Building Equipment Contractors | $5.3 million |
| 238210 | Electrical Contractors and Other Wiring Installation Contractors | $2 million |
Who buys under PSC Z1KA
Agencies with the most contract dollars under Z1KA over the last three fiscal years, per USAspending.gov:
| Agency | Obligated |
|---|---|
| Department of the Army | $272.6 million |
| Bureau of Reclamation | $26.6 million |
| Saint Lawrence Seaway Development Corporation | $6.2 million |
| Forest Service | $1.2 million |
| U.S. Coast Guard | $816,110 |
| U.S. Fish and Wildlife Service | $459,391 |
| National Park Service | $145,764 |
| U.S. Geological Survey | $53,150 |
On open notices right now, the most Z1KA work comes from Dept of Defense, Department of the Interior and Department of Transportation.
Federal spending under PSC Z1KA by year
| Fiscal year | Contract obligations |
|---|---|
| FY2024 | $111.8 million |
| FY2025 | $60.5 million |
| FY2026 | $135.6 million |
| FY2027 (so far) | $0 |
Who wins PSC Z1KA contracts
| Company | Obligated, last 3 years |
|---|---|
| Alberici Constructors Inc | $68.2 million |
| Mcmillen, Inc. | $34.2 million |
| Abhe & Svoboda, Inc. | $22.5 million |
| Marine Diving Solutions, LLC. | $19.1 million |
| Allison Park Contractors, Inc. | $17.1 million |
| Occi Inc | $14.8 million |
| Mccormick Industrial Abatement Services, Inc. | $14.6 million |
| C. J. Mahan Construction Company, LLC | $14 million |
| Koontz Electric Company, Incorporated | $14 million |
| Ams Industrial LLC | $10.4 million |
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 Z1KA?
Z1KA is the service code in the federal Product and Service Code (PSC) Manual for maintenance of dams, 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 Z1KA?
Most federal contract dollars under PSC Z1KA go with NAICS 237990 (Other Heavy and Civil Engineering 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 Z1KA?
Contract opportunities are posted on SAM.gov with their PSC and NAICS codes. 3 open notices use PSC Z1KA right now. FedReady can match new ones to your business and email you, free.