Explanation
1. BACKGROUND
This ordinance authorizes the Director of Public Utilities to enter into a planned contract modification for professional engineering services agreement with Evans, Mechwart, Hambleton & Tilton, Inc. for the Franklinton Stormwater Improvements project, CIP #610910-100001, in an amount up to $900,921.03.
The Franklinton Area Stormwater System Improvements project was initiated to develop master planning and detailed design plans for constructing storm sewers and/or detention facilities to improve stormwater system capacity in the Franklinton Area. The goal of this project is to mitigate street and structural flooding caused by insufficient capacity of the Renick Run storm sewer system, south of I-70 and north of Renick Run Pump Station. The project area is bounded on the north by I-670, south by Hart Rd, west by Wheatland Ave. and east by SR-315 and I-71 freeway.
The initial funding for this project prepared a detailed storm model of the West Franklinton neighborhood. Alternatives were proposed to resolve the flooding issues and, after extensive discussion with shareholders, a preferred alternative has been determined. This alternative has been approved by management and property acquisition has begun.
There a total of 3 phases of this project. Once all 3 phases are complete, the level of service of the storm sewer system in the West Franklinton neighborhood will handle rain events to avoid surcharges for:
• The 2 year design storm on local streets and,
• The 5 year design storm on arterial streets.
This phase, Phase 1, of the project, was to determine a solution to the flooding problem and design improvements to increase capacity downstream of West Franklinton. The design improvements include a retention basin in McCoy Park and a large trunk sewer to the corner of Mound Street and Glenwood Avenue. This contract modification will perform preliminary engineering and design to 30% completion. An additional contract modification ...
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