Title
An Ordinance approving Change Order #1 to the On-Call contract with Wiedenmann Inc. for the installation of a leachate cut-off trench at the Resource Recovery Park, an increase of $26,337.51 for a revised contract price of $90,018.51. (PWC 11/27/18)
Body
Issue/Request:
An ordinance approving Change Order #1 to the On-Call contract with Wiedenmann Inc. for the installation of a leachate cut-off trench at the Resource Recovery Park, an increase of $26,337.51 for a revised contract price of $90,018.51.
Key Issues:
· The On-Call contract is based on set hourly personnel and equipment rates plus the cost of materials. The original contract modification was for an estimated price based on information known at that time.
· Lab testing of the Bentonite-Cement slurry using the local mix quoted by Wiedenmann, Inc. revealed that it would not perform in a way to prevent leachate migration. SCS Engineers worked with Geiger Ready-Mix to create a suitable mix. That mix was 55% higher in price.
· The contract realizes that the scope of each job may not be entirely known until work commences due to the involvement of buried infrastructure. The bottom of the trench was to be at bedrock, which was expected to be at 14 feet. The depth varied and was greater than 20’ at the center.
Proposed City Council Motion:
FIRST MOTION: I move for a second reading of an Ordinance approving Change Order #1 to the On-Call contract with Wiedenmann Inc. for the installation of a leachate cut-of trench at the Resource Recovery Park, an increase of $26,337.51 for a revised contract price of $90,018.51.
SECOND MOTION: I move for adoption of an Ordinance approving Change Order #1 to the On-Call contract with Wiedenmann Inc. for the installation of a leachate cut-of trench at the Resource Recovery Park, an increase of $26,337.51 for a revised contract price of $90,018.51.
Background:
SCS Engineers prepared a work plan to the satisfaction of the Missouri Department of Natural Resour...
Click here for full text