Explanation
1. BACKGROUND: This legislation authorizes the Director of Public Utilities to renew an existing engineering agreement with DLZ Ohio, Inc. for the Lower Olentangy Tunnel Phase 1 & 2, CIP 650724-100000. The work for this project will include construction plan preparation through 90% completion and detailed geotechnical investigation work. Future contract renewals will include completion of construction plans, development of bidding documents and engineering services during construction.
The proposed Lower Olentangy Tunnel will work in tandem with the four pillars of the Blueprint Columbus program to enable the City to address several elements of its sewer consent orders. The project will provide hydraulic relief to both the Franklin Main Interceptor Sewer and the Olentangy Scioto Interceptor Sewer near Second Avenue and near Dodridge Street. It will control the seven upper Olentangy combined sewer overflows per the consent order; mitigate the activation of four designed sewer relief structures per the consent order; and allow closure of a fifth designed sewer overflow structure. This contract renewal will fund the continuation of design services through the 75% design completion stage.
2. PROJECT TIMELINE: This renewal work is scheduled for completion by the end of 2018
3. EMERGENCY DESIGNATION: An emergency designation is not requested at this time
4. CONTRACT COMPIANCE NO: 31-1268980 | MBR | 02/28/2020 | Vendor # 004939
5. ECONOMIC IMPACT: The project was identified in the Integrated Plan and 2015 Wet Weather Management Plan (WWMP) Update Report which was developed with input from numerous stakeholder groups and submitted to the Ohio EPA. The project will mitigate sewer overflows into the Olentangy River as described in the report. Short term economic impacts will be in terms of the prime and twelve sub consultants work on design of the project.
6. FISCAL IMPACT: This ordinance authorizes the transfer within of $5,132,528.64 from the Sa...
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