Explanation
1. BACKGROUND: This legislation authorizes the Director of Public Utilities to enter into a planned modification (Mod #3) of an existing professional engineering agreement with URS Corporation - Ohio for the Big Walnut Augmentation / Rickenbacker Interceptor-Lockbourne Subtrunk (BWARI -Lockbourne Subtrunk), CIP 650491-100002. The original contract was for the design of a 12-ft diameter tunnel including a 60-in diameter sanitary sewer. Modification #1 was for the re-design of the tunnel utilizing a 78-in diameter along the original alignment including a 60-in diameter sanitary sewer. Modification #2 was for the design of the new alignment required for the 78-in diameter tunnel along with the original 60-in sanitary sewer. Modification #3 contains both planned and unplanned items: Completion of a Value Engineering Study as well as engineering services during construction. Note: funding for this modification came from the cancellation of EL017639, which was created by Ordinance 1813-2015.
Modification #4 (Future): Engineering services during construction.
It should be noted that items A through D listed below are additional tasks that were added to the planned modification for engineering services during construction. It was requested that these items be added as a potential construction cost savings measure.
This contract modification authorizes the following:
a. Conduct a Value Engineering (VE) study of the project.
b. Make any plan, specification or Geologic Baseline Report (GBR) changes required/recommended from the VE process.
c. Completion of an independent construction cost estimate.
d. Evaluate gravity connection options for Rickenbacker lift station 904 to the future Lockbourne Intermodal Sewer (LIS) subtrunk.
e. Complete the required Permits to Install (PTI) permits.
f. Conduct the first 12 months of engineering services during construction as detailed in the attached scope document (for the remainder of the Engineering Services ...
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