Project Manual Vol. 8 (PW# 2025-066) Summary

This is a Project Manual document for the City of Seattle, Washington, related to a sewer rehabilitation contract involving cured-in-place pipe (CIPP) installation methods. The project encompasses the rehabilitation of approximately 64,000 lineal feet of existing sanitary sewer, combined sewer, and storm pipes at various locations throughout Seattle, with mainline pipes ranging from 6 inches to 27 inches in diameter across 263 pipe segments. The scope of work includes traffic control, bypass pumping, cleaning, pre-construction closed circuit television (CCTV) video inspection, debris removal, intruding lateral piping removal, pre-liner installation, CIPP liner installation and molding, lateral reinstatement, and post-construction CCTV inspection. The project will utilize two primary installation methods: fiberglass lining installation with ultraviolet light curing and felt lining installation with steam or water thermal curing.

The Engineer's Estimate for this project is $10,130,000.00. This 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 provides people from economically distressed communities, women, and people of color access to construction work opportunities while providing contractors access to skilled workers. The project reflects the City of Seattle's commitment to racial and economic equity through its contracting practices, supported by mayoral and City Council initiatives.