Explanation
1. BACKGROUND: This legislation authorizes the Director of Public Utilities to modify a professional engineering services agreement with Dynotec, Inc. with for the Third Avenue Combined Sewer Overflow (CSO) Increased Capture and Green Infrastructure project (Mod #1). As part of the agreement between the City and the EPA, the Third Avenue CSO Increased Capture and Green Infrastructure project has performed a study, computer modeling, business case evaluation (BCE), and preliminary design of improvements in the vicinity of Third Avenue, on both sides of the Olentangy River. These improvements include providing a “typical year” level of service to the Third Avenue CSO basin, several areas of rain gardens and pervious pavement in the Third avenue CSO basin that will further reduce and improve the quality of the overflow from the Third Avenue CSO, as well as several rain gardens, pervious pavement, and stormwater inlets in the area tributary to the Third Avenue railway underpass that will reduce the flooding to the 25 year recurrence frequency. The proposed work will include finishing the design plans, construction procurement, and engineering services during construction.
MODIFICATION INFORMATION
1.1 Amount of additional funds to be expended: $176,340.39
Original Contract Amount ($): $ 883,550.06
Modification #1: (Current) $ 176,340.39
Total $1,059,890.45
1.2. Reasons additional goods/services could not be foreseen:
The business case evaluation was a significantly more involved process than originally anticipated, which required more meetings, modeling, geotechnical investigations, and analysis, and resulted in different proposed improvements than what was planned in the original scope.
1.3. Reason other procurement processes are not used:
Re-bid of the project under the new requirements will likely result in a higher project costs as much of the project history would be lost and required to be rediscovered by another ...
Click here for full text