Explanation
1. BACKGROUND
This ordinance authorizes the Director of Public Utilities to modify the professional engineering services agreement with Resource International Inc. for the Second Avenue Sewer Improvements Project, CIP 611707-100000, in an amount up to $249,470.40.
The City of Columbus, Division of Water Reclamation, initiated a project to address flooding issues along East Second Avenue in the Milo Grogan area at the railroad overpass to the west of the intersection with Grant Avenue. The scope of work for this Project entails the evaluation and design of approximately 4,000 linear feet of new storm sewer within the project area to manage the runoff volume via redirection. Diameters of the new storm sewers are anticipated to range from 18- to 66-inches. As modeling has been completed for the project area, and a preliminary sewer alignment has been developed, the intent of this project is to use the available information to evaluate alternatives and design a practical and constructible storm sewer alignment in accordance with the most recent version of the City’s Stormwater Drainage Manual. The modeling anticipates the existing 102-inch diameter storm sewer along East Fifth Avenue, just north of the project area boundary, as the outlet for the proposed storm sewer improvements in the project area.
This contract modification will add funds to address geotechnical investigation needs and detailed tunnel design as the original project scope of work did not envision needing to install storm sewer at a depth lower than the existing sanitary sewer to separate both gravity sewer systems.
The Community Planning Area: 43 (Harrison West)
1.1 Amount of additional funds to be expended: $249,470.40
Original Contract (ORD 0907-2020, PO229612) $692,312.03
Modification #1 (current) ...
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