Canal Siphon Diving and Cleaning Services

Contra Costa Water District is seeking electronic bids for underwater diving, sediment and debris removal, and restoration services at two canal siphon sites in Contra Costa County, California.

Contra Costa Water District


General
Open
2772
Sep 21, 2026 11:00 PM
Aug 20, 2026 11:34 PM
1 year base + 1 × 1 year option
Invitation for/to Bid (IFB/ITB)
Local
Ask AI about this solicitation
Contact
ccwdpurchasing@ccwater.com
+19256888012
1331 Concord Avenue, Concord, CA, USA
Submission Instructions
Description

Contra Costa Water District is soliciting bids for underwater diving and cleaning services at two canal siphons: the Kirker Creek siphon in Pittsburg and the Camino Andres siphon in Bay Point. The contractor must provide all labor, equipment, and materials to remove accumulated gravel, silt, sediment, hardened deposits, and debris; dispose of removed materials and large objects; install and remove downstream silt screens; and restore each site. One siphon will be cleaned during each fiscal year, at the District’s selection. The work includes submerged operations in concrete siphons approximately 8.75 feet in diameter, with the Kirker Creek siphon approximately 130 feet long and the Camino Andres siphon approximately 280 feet long. The contractor must provide a health and safety plan covering both sites, a written diving safety manual and dive plan, required safety procedures and training documentation, traffic control, equipment security, fence removal and reinstallation, and compliance with prevailing-wage, confined-space, environmental, and water-work requirements. A post-dive inspection and video will be performed by the District’s dive contractor. The contract includes a one-year base period and one priced one-year option period.

Classification Codes
NAICS562910Remediation Services
PSCZ1KFMAINTENANCE OF DREDGING FACILITIES
Smart Codes
underwater diving servicescanal siphon cleaningsediment removal
Specifications
Service
Timeline
Aug 20, 2026-Bid Posted Date
Aug 26, 2026-Mandatory Pre-Bid Job Walk 1 (optional)
Attendance at one of the two mandatory job walks is required; sign-in sheet completion is required.
Sep 3, 2026-Mandatory Pre-Bid Job Walk 2 (optional)
Attendance at one of the two mandatory job walks is required; sign-in sheet completion is required.
Sep 4, 2026-Questions Due Date
Sep 11, 2026-Addendum Issuance Date
Sep 21, 2026-Bid Due Date
Requirements
Required
  • Workers' Compensation
  • Employers' Liability — $1,000,000.00
  • Commercial General Liability — $2,000,000.00
  • Commercial Automobile Liability — $1,000,000.00
  • Professional Liability — $1,000,000.00
Required
  • Payment Bond — 100%
  • Performance Bond — 100%
Required
  • Minimum 3 references
  • Client point of contact required for each reference
No
Documents
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