Explanation
1. BACKGROUND
This ordinance authorizes the Director of Public Utilities to enter into a professional engineering services agreement with CTL Engineering of Ohio, Inc. for the Jackson Pike Substation Subsurface Investigation project, in an amount up to $335,743.68, for Division of Power, CIP No. 670901-100002.
The design of a capital improvement project to modernize the Jackson Pike substation was suspended when preliminary field investigations indicated the potential presence of subsurface void(s) indicative of Karst features. (Bedrock dissolving resulting in unstable ground.) These findings raised concerns about the structural stability of the substation infrastructure. The potential risk of ground subsidence and the resulting damage to critical electrical components necessitates a thorough investigation to accurately identify and address these subsurface conditions before proceeding with any further improvements at the substation.
This project will investigate the subsurface voids, determine their cause, and mitigation strategies should karst voids be confirmed.
The community area is “99 - City-Wide”.
TIMELINE & FUTURE MODIFICATION(S):
The work is estimated to last approximately seven months but may take longer. The contract will start when a Notice To Proceed is issued and will end when the work is complete and accepted by the City.
ESTIMATED COST OF PROJECT:
The negotiated professional services agreement amount is $335,743.68, including a 10% contingency amount that will be utilized to fund needed and approved changes in the work. No contract modifications are anticipated at this time; however, construction exigency might later compel modification of this contract, if unforeseen difficulties are encountered.
Cost summary:
Original Contract $ 335,743.68
Future Anticipated Needs ...
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