Background/Discussion
The City is the local sponsor of the Council Bluffs Levee System, and as such, it is responsible for operation and maintenance. Performing regular inspections of the drainage structure pipes within the levee system is one of the responsibilities.
The most recent inspections of the drainage structures occurred in two phases. Most were completed in 2017, with a few on hold due to excessive debris in the pipes. Flooding in 2018 and 2019 caused further delays. The remaining inspections were completed in 2021.
To comply with USACE requirements, this project will undertake a system-wide inspection program that will result in an inspection report and overall rating for each levee drainage structure within the levee system.
The scope of the project includes over 21,000 linear feet of inspection and associated cleaning for gravity storm sewer pipes and boxes, and force main storm sewer pipes, with various diameters and lengths.
Alternate bid items will be included to inspect other structures within the levee right-of-way, such as sanitary sewer pipes and the IDNR outfall pipe. These pipe crossings have not been previously assessed. The bid alternates can be independently deleted or added as funds allow at the time of award.
These inspections, with subsequent ratings, allow the Council Bluffs Levee System to remain active in the USACE PL84-99 levee program. By participating in the program, USACE will assist with flood fight efforts during a high water event, and provide restoration to the levee system if damages occur during the flood.
The estimated cost of this project is $275,000. The project has been added to the FY23 CIP and will be paid from levee improvement program funding.
| The project schedule is as follows: |
Hold Public Hearing |
September 26, 2022 |
|
Bid Letting |
October 19, 2022 |
|
Award |
November 14, 2022 |
|
Construction End |
December 2023 |