Explanation
1. BACKGROUND:
A. Need. This legislation authorizes the Director of Public Utilities to enter into a professional engineering services contract with DLZ Ohio, Inc. for the Sanitary Sewer System Inflow and Infiltration Remediation Project - Miller/Kelton Area, for the Division of Sewerage and Drainage.
The Miller/Kelton area is located on the East side of the city and is bounded by East Main Street to the North, East Livingston Ave to the South, South Nelson Road to the East, and South Eighteenth Street to the West. The City is aware of occurrences of street, yard, and basement flooding, sanitary sewer surcharges, and sewerage overflows from Designed Sanitary Reliefs (DSRs) and manholes within the Miller/Kelton study area.
The purpose of this project is to conduct a detailed study of the sanitary collection system to identify locations of sewerage overflows out of manholes, sanitary reliefs, sewer system surcharging, sewer backup into basements (known as water-in-basement: WIBs), and identify the causes of these occurrences. The project will clean and televise all combined, sanitary and a limited amount (2,000 lf) of storm sewers within the project boundary; investigate the area's WIB complaints in the past 6 years; build a detailed hydraulic model of the sanitary and combined sewers (includes a thorough flow monitoring, and rain gage program); perform "representative" public and private investigations to estimate the impact of all private and public sources of inflow and infiltration (I&I). After identifying locations and causes, the Engineer will recommend cost effective improvements to the sanitary collection system to mitigate and/or eliminate sanitary sewer surcharges and consequent overflows at manholes, structures, and WIB occurrences for a selected design storm event.
A total of 5 firms submitted RFP's or RFSQ's for the project on 7/18/08: Burgess & Niple, DLZ Ohio, Inc., EMH&T, Gresham Smith and Partners, Inc., and URS. The...
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