CITY COUNCIL AGENDA ITEM
Memo Date: October 19, 2023
Agenda Date: November 14, 2023
Prepared By: Melinda M. Keesee, Field Operations Technician
Prepared By: Donnie Howard, Field Operations Manager
Through: Chris M. Collier, Assistant Utilities Director
Through: John A. Walsh, P.E., Utilities Director
Requested Action:
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To Approve the Insituform Technologies, LLC Proposal for Cured in Place Pipe (CIPP) Rehabilitation Services and Sanitary Sewer Mid-Term Cleaning & CCTV Inspections of Main Line Sewers Utilizing the Clay County Utility Authority Bid No. 18/19-A7 effective June 18, 2022 through June 18, 2024
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BACKGROUND:
In FY2015, CDM Smith completed a thorough analysis of the assessment data obtained during the FY2014 RedZone Robotics, Inc. CCTV inspection process. As part of this analysis, a detailed plan was developed to systematically address broken sewer piping over a six-year period beginning in FY2016. Rehabilitation and replacement was recommended for individual pipe segments based on structural operation and maintenance (O&M) concerns. These recommendations were formed based on the severity of defects, potential for defect progression, and consequence of failure. Rehabilitation and replacement recommendations were then prioritized and grouped to develop various projects. An implementation plan was formed to clean and repair sewer lines based on consequence of failure, risk of failure, available funding, and pipe segment geographic location.
To maintain the integrity of the sanitary sewer system with minimal construction and disturbances, sewer mains are able to be rehabilitated through a trenchless "cured-in-place-pipe" (CIPP) method installed through existing manholes. This installation process lines the selected sewer mains with a flexible liner which when heated, forms into a hardened fiberglass "pipe" that replaces the broken pipe from the inside of the pipe. As a result of this process, the carrying capacity of the sewer...
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