Marine demolition and mattress installation
VORTEX MARINE CONSTRUCTION INC · PRT Port
The Port pays a marine contractor for demolition work and to install mattresses — the flexible mats laid on a bed to stop it eroding. San Francisco agreed $11.4M with VORTEX MARINE CONSTRUCTION INC for contract 1000036541 (PRT Port); $12.2M has been paid on it so far. Source: SF Controller supplier contracts (open data), data as of 13 July 2026.
The Port pays a marine contractor for demolition work and to install mattresses — the flexible mats laid on a bed to stop it eroding.
Register title: “MARINE DEMO & MATTRESS INSTALL”
Signed by Port
$12.2M paid · $790,424 more than the recorded base amount · Agreed $11.4M
These bars total $12.8M; the figure above is $12.2M. The first comes from the City’s payment ledger, the second from the contract register’s own paid column. They match on ordinary contracts and drift apart on multi-phase projects, where the work runs through several purchase orders and the ledger counts all of them.
| Supplier | Role | Attached $ |
|---|---|---|
| VORTEX MARINE CONSTRUCTION INC | Prime | — |
| SITECO SERVICES, INC.LBE | Subcontractor | $883,973 |
| SILVERADO CONTRACTORS INC | Subcontractor | $831,917 |
| CASTELLANOS TRUCKINGLBE | Subcontractor | $20,000 |
Attached amounts for subcontractors and JV members live inside the prime's envelope — they are context, never additive with the contract's own amounts.
- Dataset
- Supplier Contracts
- This contract in the source
- Raw rows (JSON, data.sfgov.org)