Charleston Civicplus #885

Charleston Central Park Drainage Improvements: Stormwater Infrastructure, Tide Gates, and Utility Relocations

The City of Charleston's Department of Stormwater Management is seeking bids for the Central Park Drainage Improvements Project on James Island, focused on enhancing stormwater, tidal, and flood resiliency in the Central Park Road basin. - Government Buyer: - City of Charleston, Department of Stormwater Management - Charleston Water System (Commissioners of Public Works) - OEMs and Vendors: - Golden Harvest, Inc. (specified for tide gates and flap gates) - Products and Materials Requested: - Golden Harvest Model GH-35 Self-Regulating Tide Gates (marine-grade aluminum, adjustable floats, anti-fouling paint) - Golden Harvest Model GH-39SS Stainless Steel Flap Gates (Type 304L/316L stainless steel, neoprene seals) - 54-inch box culverts (3 units), 108x48 box culverts (2 units), and various reinforced concrete pipes (RCP) (sizes: 24", 18", 48", 42", 36", 15") - Ductile iron pipe (DIP) waterlines (8-inch, 6-inch) with 12-inch DI casing, RJ 45-degree bends, and associated fittings - Water valves (gate, butterfly, insertion), valve boxes, and appurtenances per Charleston Water System standards - Geotextile fabric, rip-rap, erosion control blankets, turbidity curtains, silt fences, sediment tubes, and check dams - Shoreflex vegetated concrete block mat, topsoil, engineered fill, and bridge lift material - Services Requested: - Demolition and removal of existing roadways, sidewalks, curbs, gutters, storm drain pipes, culverts, and structures - Installation of new storm drain pipes, culverts, valves, and structures; grading for positive drainage - Water main and sanitary sewer force main relocations (per Charleston Water System specifications) - Erosion control (temporary and permanent), including installation of rip-rap and other measures - Traffic control during construction - Surveyed as-built record drawings - Geotechnical and soil investigation services (soil borings, muck depth investigation, foundation recommendations) - Unique or Notable Requirements: - Use of Golden Harvest, Inc. Model GH-35 and GH-39SS gates is mandatory or equal - Compliance with Charleston Water System specifications for all water main relocations and materials - SBE (Small Business Enterprise) participation goal of 20% - Liquidated damages of $500 per day for late completion - Project is part of a multi-agency initiative and partially funded by the South Carolina Rural Infrastructure Authority (RIA) - All bidders must hold a valid South Carolina Contractor's License - Detailed technical and geotechnical requirements for foundation and creek bank stabilization

Description

The City of Charleston is soliciting bid proposals for construction services to improve drainage, tidal, and flood resiliency in the Central Park Road basin on James Island. The project includes installing improvements along approximately 4,250 linear feet of open channel, demolition of existing asphalt roadways, sidewalks, curb, gutter, storm drain pipes, culverts, and structures. New storm drain pipes, culverts, valves, structures, grading, water main and sanitary sewer force main relocations, asphalt paving, concrete sidewalks, curb, gutter, erosion control, temporary traffic control, and surveyed as-built record drawings are part of the scope. Funding is partially provided by the South Carolina Rural Infrastructure Authority (RIA).

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