Sewer Rehabilitation Project Management

case study: sewer rehabilitation program management

The City of Toronto, the largest city in Canada, operates an extensive network of local and trunk sewers. In 2021, Andrews.engineer (A.E) was retained by Toronto Water to manage and execute Toronto Water’s Sewer Rehabilitation Program (SRP) for a three-year term. The program involves developing a data management platform, bundle design packages, developing specifications and procurement packages, administering construction contracts, and providing post-construction services for delivery of $30 to $40 million of sewer and maintenance hole (MH) rehabilitation works annually.

The SRP includes the following activities:

• Detailed design of sewer and MH rehabilitation works including CIPP, spray-lining, spot repair, partial replacement, full MH replacement, and component replacement etc. for more than 1,000 sewers and MHs annually
  
• Preparation of tender packages, contract documents
• Develop a data management platform to facilitate data transfer, storage and status tracking
• Daily contract administration and site inspection
• Post-construction services

For each program year, A.E’s design staff perform follow-up inspections and review to verify existing conditions of the sewers and MHs and confirm rehabilitation strategy; conduct site visits to confirm accessibility for all sewer and MH rehabilitation works, obtain permits and approvals from various permitting agencies, prepare contract and procurement documents for tendering. During the construction phase, A.E’s construction staff undertakes daily site inspection and contract administration for four to five contracts annually.