Addendum 3 EXHIBIT D PLUMBING.pdf

This is Addendum 3 to the Exhibit D Plumbing specifications for the Honuakaha Hot Water Return Systems Modifications project issued by the Hawaii Community Development Authority (HCDA). The project involves modifications to domestic hot water return systems serving 151 rental units at the Honuakaha Affordable Housing Complex located at 545 Queen Street, Honolulu. The scope of work includes demolition and installation of new domestic hot water return piping, valves, supports, and insulation throughout multiple areas of the building including the P2 parking level, vertical utility pathways, trash chute and mechanical access rooms, and rooftop mechanical areas. A mandatory pre-bid conference and site inspection is scheduled for July 29, 2026 at 10:30 a.m. HST. Written questions are due August 6, 2026 at 3:00 p.m. HST, with responses provided by August 13, 2026. Bids are due August 21, 2026 at 3:00 p.m. HST through the Hawaii eProcurement (HIePRO) system, and the anticipated award date is August 27, 2026. Final Completion is required within 180 consecutive calendar days from Notice to Proceed, with normal work hours Monday through Friday from 8:00 a.m. to 4:30 p.m.

This is a lump sum construction contract requiring bidders to hold a valid State of Hawaii C-37 Plumbing Contractor license and demonstrate a minimum of five consecutive years of experience in similar work. Bidders must establish an office or service presence on Oahu and maintain a minimum of 80% Hawaii resident workforce under Chapter 103B, HRS. Prevailing wage requirements apply with minimum hourly rates of $38.53 for Construction and Maintenance Worker II and $36.40 for Plumbers. Materials specifications require Type L seamless rigid copper tubing with wrought copper or cast copper alloy solder-type fittings, bronze ball valves, Y-strainers, and black flexible elastomeric pipe insulation with aluminum jacketing. All piping must be pressure-tested at 150 psig and disinfected with chlorine solution to 200 PPM residual chlorine, then flushed to below 0.2 PPM. Bid security of 5% and Performance and Payment Bonds equal to 100% of contract price are required. Liquidated damages are assessed at $500 per calendar day for schedule delays. The contractor must provide a one-year warranty on all work following Final Acceptance. The HIePRO system charges a mandatory 0.75% transaction fee not to exceed $5,000 for the contract term.