Project_Manual_Vol._4_(PW#_2025-066).pdf

This is a Project Manual for the City of Seattle's Sewer MA Lining Contract 1 (PW# 2025-066), a Cured-in-Place Pipe (CIPP) installation project involving the City of Seattle's Department of Construction and Inspections or relevant utilities department. 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 using two CIPP installation methods: fiberglass lining with ultraviolet light curing and felt lining with steam or water thermal curing. The mainline pipes range from 6 inches to 27 inches in diameter across 263 pipe segments. Project work elements include 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, and lateral reinstatement. The project is subject to the City of Seattle's Community Workforce Agreement (CWA) and Priority Hire requirements under SMC 20.37, which mandate workforce participation from economically distressed communities, women, and people of color.

The Engineer's Estimate for this project is $10,130,000.00. As a Covered Project under the City of Seattle's equity-focused contracting programs, this contract requires compliance with Priority Hire provisions that provide access to skilled workers from underrepresented populations while offering contractors access to these qualified labor pools. The project manual provides detailed specifications, requirements, and guidelines necessary for bidders to prepare competitive proposals and execute the rehabilitation work in compliance with all City standards and regulatory requirements.