Explanation
BACKGROUND: This legislation authorizes the Director of the Department of Public Utilities to enter into a Guaranteed Maximum Reimbursement Agreement (GMRA) with The Ohio State University for the Clinton Sewer District Number 3 Trunk Sewer Siphon Upgrade, CIP 650902-100000, pursuant to Section 186 of the Columbus City Charter.
This project is necessary to support the OSU West Campus mixed-use redevelopment project that incorporates approximately 210 acres of land generally bounded by Lane Avenue to the north, Kinnear Road to the south, Kenny Road to the east, and Northstar Avenue to the west. This project will eliminate a bottleneck along the Clinton Sewer District #3 Trunk Sewer under the Olentangy River by providing additional capacity to support the anticipated flows collected by the new sewers that will be constructed to serve the West Campus tributary area. Sizing of the sewer also incorporated projected flows for the entire tributary area and will maintain compliance with allowable activations upstream of the siphon at Designed Sewer Relief (DSR) 873 on the Olentangy River.
This project consists of adding approximately 600 lf of 36” diameter sewer barrel to the existing Clinton No. 3 inverted siphon beneath the Olentangy River at Woody Hayes Drive on the Ohio State University campus. This includes adding an additional junction chamber at the upstream and downstream end of the proposed sewer and two additional manholes. The project will be constructed using open cut methods. Temporary causeways spanning no more than half the channel width at a time will be needed to facilitate construction. A portion of the project is within an environmental covenant area. Within this area the surface will be restored and revegetated as close as possible to pre-project conditions.
Upon passage of this Ordinance, the City of Columbus will agree to pay a guaranteed maximum reimbursement of $4,007,850.00 to The Ohio State University for the Clinton Sewer D...
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