REPORT TO COUNCIL
SUBJECT
Title
Action on Amendment No. 1 to the Agreement with Mott MacDonald Group, Inc. for Annual Sanitary Sewer Condition Assessment Repair Projects (Year 2021/2022 Projects) [Council Pillar: Deliver and Enhance High Quality Efficient Services and Infrastructure]
Report
BACKGROUND
On June 23, 2020, Council approved an agreement with Mott MacDonald Group, Inc. to provide engineering design services for sanitary sewer repair construction contracts for public works bidding (Attachment 1). The agreement includes an initial term to prepare construction documents for repair projects bidding in 2021, and two extension options to prepare construction documents for repair projects bidding in 2022 and 2023. The initial term of the agreement for year 2021 projects includes the design of repairs along approximately 45 sanitary sewer pipelines totaling approximately 12,000 feet in length at various locations citywide. These pipelines were identified for repair by Water and Sewer Utilities Department staff based upon pipeline inspections performed through the sanitary sewer condition assessment program and considerations such as the condition of the pipes, the severity of defects, the amount of sewer flow and size of area served. The consultant has been providing engineering services for repair of these pipelines since approval of the agreement and is currently in the preliminary engineering phase.
The Water and Sewer Utilities Department has continued to perform ongoing condition assessments of the sanitary sewer collection system with the objective of completing a full inspection of all the gravity mains by March 2021. This assessment was divided into five phases, the third of which was recently completed. The pipelines prioritized for repair in year 2021 construction contracts referenced above are based upon information collected and evaluated from prior phases. The third phase assessment revealed approximately 50 additional high priority pipelines ...
Click here for full text