Columbia Ionwave #BID001-26-27-TUE Addendum 3

Columbia Stormwater Pond Retrofit and Sewer Replacement Bid Opportunity

The City of Columbia is seeking bids for the Louisa Street Stormwater Pond Retrofit and Sewer Replacement project. - Government Buyer: - City of Columbia, Department of Procurement and Contracts - Procurement Specialist: Unique Edwards - Project Scope: - Retrofit an existing dry stormwater detention basin into a wet retention pond - Replace and relocate sanitary sewer infrastructure - Grading, excavation, and installation of drainage structures - Installation of approximately 1,021 linear feet of 12-inch PVC sanitary sewer pipe (SDR 35, ANSI/ASTM D3034, D2321, F477) - Abandonment of 683 linear feet of existing sewer pipe with flowable fill - Removal of 40 linear feet of existing sewer pipe - Construction of 5 standard sanitary manholes - Erosion and sediment control, including installation and maintenance of 1,250 linear feet of silt fence - Stone construction entrance, temporary and permanent site stabilization (seeding and mulching), and traffic control - Clearing, grubbing, demolition, and site revegetation - OEMs and Vendors: - No specific OEMs named; acceptable PVC pipe manufacturers include Westlake Pipe & Fittings and JM Eagle (or equivalent) - Unique/Notable Requirements: - Strict compliance with stormwater management ordinances and NPDES permitting - Privacy screening required along temporary fencing - Protection of existing drainage and sanitary structures - Coordination for utility relocations - Participation from Local Business Enterprises and Disadvantaged Business Enterprises encouraged - Bidders must be licensed general contractors in South Carolina and comply with bonding and insurance requirements - Subcontractor and vendor lists, business status, and conflict of interest certifications required - Bid process is fully online, with virtual pre-bid meeting and bid opening - Performance period includes substantial completion within 240 days, final completion within 300 days, and up to 180 days for contract closeout activities

Description

This solicitation is an Invitation for Bids issued by the City of Columbia for the Louisa Street Stormwater Pond Retrofit and Sewer Replacement project. The project involves retrofitting a stormwater pond and replacing sewer infrastructure, including sanitary sewer bypass pumping, installation of PVC sanitary sewer pipe, abandonment and removal of existing sewer pipes, and construction of standard sanitary manholes. The scope also includes erosion and sediment control measures, traffic control, clearing, grubbing, demolition, and site stabilization. Bidders must submit their bids online by September 9, 2026, and participate in a pre-bid meeting held virtually on August 12, 2026.

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