Sewer Relining Program

Location: Seattle, WA
Owner: Seattle Public Utilities

OCI is leading Seattle Public Utilities’ (SPU) Sewer Relining Program to provide bid documents and construction assistance for using CIPP on over 200 drainage, sanitary sewer, and combined sewer pipes. The program’s primary objective is to renew the wastewater pipe system as well as support NPDES and Consent Decree compliance by reducing sewer overflows (SSO), dry weather overflows (DWO), and combined sewer overflows (CSO). OCI field crews visited sites throughout Seattle to collect data on sewer pipes and maintenance holes that is imported to a central database. Field crews assess the feasibility of lining the pipes and coordinates access to the maintenance holes and staging area for the contractor. The information collected at each site is then used to develop  the bid documents.

Utilities Planning and Design

Service Details >>

Services List
  • Open-Cut and Trenchless Solutions
  • Utility Analysis and Design
  • Prioritization and Rehabilitation of Existing Infrastructure
  • CCTV and Inspection Report Review
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