PSC Z1KF: Maintenance of Dredging Facilities
Z1KF is the product and service code (PSC) federal agencies use for maintenance of dredging facilities, 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
- 18
- Spending, FY2026
- $293 million
- Share to small businesses
- 26%
Open contracts with PSC Z1KF, due soonest
- Notice of Intent to Consolidate
Due in 2 daysOct 12, 2026
- USACE National Enterprise Dredging Center Scope Dredge to Budget Contract
Due in 5 daysOct 15, 2026
- RESERVE BASIN MAINTENANCE DREDGING CONTRACT FOR SITES AT THE PHILDELPHIA NAVY YARD IN THE PUBLIC WORKS DEPARTMENT PENNSYLVANIA AREA OF RESPONSIBILIY
✦ The Navy (NAVFAC Mid-Atlantic) wants a contractor to maintenance-dredge about 96,611 cubic yards of sediment from the Reserve Basin and Schuylkill River access channel at the…
Due in 5 daysOct 15, 2026
- USCG Cutter Eagle New Dredging for Berthing at New London City Pier
✦ The U.S. Coast Guard (CEU Providence) wants a contractor to dredge a new area south of the Cutter Eagle's berth at New London City Pier, CT, and remove about 50 old piles.
Due in 5 daysOct 15, 2026
- Water Resources Brach Quarterly Industry Day for Coastal and Navigation Projects
Due in 9 daysOct 19, 2026
- Upper Wicomico River Dredging Project, Wicomico County, MD
✦ The Army Corps of Engineers, Baltimore District, plans maintenance dredging of the upper Wicomico River in Wicomico County, Maryland, using a hydraulic dredge and pipeline.
Due in 11 daysOct 21, 2026
Where Z1KF sits in the PSC Manual
- Category: Service
- Group Z: Maint, Repair, Alter Real Property
- Group Z1: Maint, Alter, Repair Buildings
- Code Z1KF: Maintenance of Dredging Facilities
NAICS codes used with PSC Z1KF
The NAICS code on a contract sets the size standard for who counts as small. These are the codes agencies pair with Z1KF most often:
| NAICS | Industry | Spent, last 3 years |
|---|---|---|
| 237990 | Other Heavy and Civil Engineering Construction | $2 billion |
| 238910 | Site Preparation Contractors | $3.7 million |
| 541380 | Testing Laboratories and Services | $3.1 million |
| 541330 | Engineering Services | $560,028 |
| 541620 | Environmental Consulting Services | $258,177 |
| 238990 | All Other Specialty Trade Contractors | $166,340 |
Who buys under PSC Z1KF
Agencies with the most contract dollars under Z1KF over the last three fiscal years, per USAspending.gov:
| Agency | Obligated |
|---|---|
| Department of the Army | $1.9 billion |
| Department of the Navy | $32 million |
| U.S. Coast Guard | $15 million |
| Forest Service | $25,220 |
On open notices right now, the most Z1KF work comes from Dept of Defense and Department of Homeland Security.
Federal spending under PSC Z1KF by year
| Fiscal year | Contract obligations |
|---|---|
| FY2024 | $836.1 million |
| FY2025 | $843.1 million |
| FY2026 | $293 million |
| FY2027 (so far) | $0 |
Who wins PSC Z1KF contracts
| Company | Obligated, last 3 years |
|---|---|
| Great Lakes Dredge & Dock Co, LLC | $542.1 million |
| Weeks Marine, Inc. | $163.4 million |
| Curtin Maritime Corp | $139.3 million |
| Cottrell Contracting Corporation | $116.4 million |
| Norfolk Dredging Company | $94.1 million |
| Donjon Marine Co., LLC | $90.3 million |
| Cashman Dredging & Marine Contracting Co LLC | $87.9 million |
| Manson Construction Co | $65.3 million |
| Marinex Construction Inc | $56.4 million |
| Inland Dredging Company, L.L.C. | $46.8 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 Z1KF?
Z1KF is the service code in the federal Product and Service Code (PSC) Manual for maintenance of dredging facilities, 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 Z1KF?
Most federal contract dollars under PSC Z1KF 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 Z1KF?
Contract opportunities are posted on SAM.gov with their PSC and NAICS codes. 18 open notices use PSC Z1KF right now. FedReady can match new ones to your business and email you, free.