St Helena Civicplus #26

St. Helena Bell Canyon Intake Tower and Valve House Construction Management and Inspection Services

The City of St. Helena Public Works Department is seeking qualified firms to provide construction management and inspection services for the Bell Canyon Intake Tower and Valve House project, a major infrastructure upgrade at Bell Canyon Reservoir in Napa County, CA. - Government Buyer: - City of St. Helena Public Works Department - Project Scope: - Construction management and inspection for replacement of the intake tower, valve house modifications, new valves and piping, and stream channel improvements - Includes demolition and installation of large-diameter piping, slide gates, valve actuators, flow meters, electrical panels, HVAC, and structural components - Project area covers 5.3 acres and involves marine structures and commercial diving operations - Compliance with California Division of Safety of Dams and 2025 California Building Codes required - OEMs and Vendors Mentioned: - Waterman (slide gates) - Limitorque (valve actuators) - Hoffman (RTU enclosures) - Allen Bradley (PLC modules) - Schneider Electric (Ethernet radios) - Greenheck (fans) - Trane (unit heaters) - Products/Equipment Requested (with part numbers and quantities): - 42" OD Intake Tower Riser Pipe (ASTM A252 Grade 3, 1 each) - 24" Branch and Slide Gate (Waterman SS-250 or approved equal, 3 each) - 48" Existing Slide Gate and Frame (Limitorque V35-1S, 1 each) - Valve Actuators (Limitorque Bevel Gear Operators, 4 each) - Valve House RTU Components (Hoffman A36H30DLP3PT, 1 set) - PLC Expansion Modules (Allen Bradley 1762-IF4 and 1762-OF4, 1 set) - Ethernet Radio and Accessories (Schneider Electric TBURJR900-00002EH0, 1 set) - Electrical Panels and Lighting (New 42 Circuit Power Panel, 1 set) - HVAC Equipment (Greenheck fans and Trane unit heaters, 3 each) - Notable Requirements: - Project Manager and Resident Engineer must be California Registered Engineers - Experience with large public works and commercial diving required - Full construction administration, inspection, quality assurance, and project closeout services - Coordination with city, private landowners, and regulatory agencies - Project design firm Mead & Hunt retained for technical support - Estimated construction cost: $12 million

Description

The City of St. Helena is seeking proposals from qualified professional services firms to provide construction inspection and management services for a complex project involving a large reservoir, marine structures, large piping and valves, and buildings. The project covers 5.3 acres and includes a portion of the existing reservoir, replacement of the intake tower, and modification of the valve house building with new valves, piping, and stream channel below the reservoir. The work will be subject to inspection by the Division of Dams of the California Department of Water Resources. The estimated construction cost is $12 million, and the project requires experience managing commercial diving activities.

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