Explanation
1. BACKGROUND
This ordinance authorizes the Director of Public Utilities to enter into a planned contract modification for professional engineering services during construction with CH2M Hill Engineers, Inc. (Ch2M), for the Parsons Avenue Water Plant (PAWP) Hypochlorite Disinfection Improvements project, CIP No. 690487-100000, in an amount up to $1,533,000.00.
The Department of Public Utilities is engaged in the PAWP Hypochlorite Disinfection Improvements project. This project provides for engineering design and construction of improvements to the disinfection storage and feed facilities at PAWP. The plant currently utilizes a chlorine gas based process and this project will convert the plant to a liquid sodium hypochlorite based process. This conversion will provide for safer storage and handling of chemicals used for disinfection while switching to a much less toxic chemical.
This contract modification provides continued funding for Engineering Services During Construction. Another modification is planned to add funding to complete Engineering Services During Construction.
PAWP serves multiple Columbus Communities so this project is coded as 99-citywide.
1.1 Amount of additional funds to be expended: $1,533,000.00
Original Contract Amount: $589,800.00 (Ord. 2896-2016,PO050804)
Modification 1 Amount: $1,632,200.00 (Ord. 2956-2019,PO209640)
Modification 2 Amount: $1,747,700.00 (Ord. 1398-2023, PO404081)
Modification 3 (current): $1,533,000.00
Modification 4 (Future): $1,000,000.00 (Estimate)
Total (Orig. + Modifications): $6,502,700.00
1.2. Reason other procurement processes are not used:
Another procurement process is not required. This contract was awarded through the City’s Request for Proposal process with planned funding modifications through construction completion and acceptance by the City.
1.3. How cost of modification was determined:
The Consultant p...
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