Leveraging Infrastructure Investment with Trenchless Technologies: The City of Calgary’s Sanitary Lateral Lining Journey

摘要

With over 330,000 sanitary laterals and approximately 7,500 annual citizen-initiated complaints, how did one of Canada’s fastest growing cities deal with aging infrastructure and increasing customer expectations while remaining cost conscious? The journey started with a will to change, was bolstered by partnerships with industry experts and leaders in innovation, and has been marked with the implementation of a cost-effective solution. This paper will discuss the research, development, implementation and next steps of a municipal Sanitary Lateral Lining Pilot Program using cured in place pipe (“CIPP”).The City of Calgary’s (“The City”) Water Services initiated a Zero Based Review in 2015 with the assistance of Scottish Water to review service levels, costs of services, and industry best practices. The review identified several potential improvements including the use of trenchless technologies. A committee was formed and focused on research, benchmarking, conference attendance and building strategic industry and utility peer contacts including Robinson Consultants and the City of Hamilton. These two partners offered guidance, support, and experience that formed the requirements of a program Request for Proposal (“RFP"). Once awarded, the program leveraged considerable existing condition data to identify viable candidates and now forms a key part of the utility’s asset management approach. Discussions will be focused on the process of creating the pilot program, specifically the development of a QA/QC protocol, site inspection, customer notifications, and next steps for the pilot program.