Project Manual Volume 3 Summary

This is a project manual document for the City of Seattle Department of Finance and Administrative Services related to a sewer mainline rehabilitation contract (PW# 2025-066). The project involves the rehabilitation of approximately 64,000 lineal feet of existing sanitary sewer, combined sewer, and storm pipes across 263 pipe segments located at various sites throughout Seattle using Cured-in-Place Pipe (CIPP) installation methods. The mainline pipes being rehabilitated range from 6 inches to 27 inches in diameter. Work scope includes traffic control, bypass pumping, pipe cleaning, pre-construction and post-construction closed circuit television (CCTV) video inspection, debris removal, removal of intruding lateral piping and obstructions, pre-liner installation, CIPP liner installation and molding using either fiberglass with ultraviolet light curing or felt lining with steam or water thermal curing, and reinstatement of service laterals. The proposal due date is April 8, 2026, with the posting date of March 5, 2026. This is a competitive sealed bid procurement process.

The project carries an Engineer's Estimate of $10,130,000.00 and is funded through the Drinking Water Fund. Bidders must submit a Women and Minority Business Inclusion Plan scoring a minimum of 10 points out of 16 available points to be deemed responsive and must demonstrate compliance with responsible bidder requirements under RCW 39.04.350 including possession of a Washington State contractor registration certificate, UBI number, and industrial insurance coverage. A bid guaranty equal to five percent of the total bid including retail sales tax is required through OpenGov. Bidders with an estimated project cost of $1,000,000 or more must submit a Bidder/Subcontractor List. The project is designated as a Covered Project subject to the City of Seattle's Community Workforce Agreement (CWA) and Priority Hire requirements under Seattle Municipal Code 20.37, which mandates workforce participation from economically distressed communities, women, and people of color. All work must comply with prevailing wage standards applicable to public works projects in Seattle.