Explanation
BACKGROUND: The SWWTP operating staff is currently digesting all biosolids in the existing digester train. The addition of the Chemically Enhanced Primary Treatment (CEPT) has created an additional peak loading to the digester train, and can overwhelm the system due to the lack of capacity. This project will be providing an additional digester to meet peak capacity demands and will be providing process upgrades to create a more efficient digestion system.
Planning Area - 99 - Citywide
PROJECT TIMELINE: Contract work is required to be substantially complete in a manner acceptable to the City within 1,125 days from the date that a Notice To Proceed (NTP) is given by the City.
PROCUREMENT INFORMATION: The Division advertised for competitive bids submission for the subject services on the City's Vendor Services website and in the City Bulletin in accordance with the overall provisions of Chapter 329 of the Columbus City Code. The Division of Sewerage and Drainage received three (3) bids on October 13, 2021 from the following:
NAME TAX ID DAX # City/State Status Expiration
Bowen Engineering 35-1136995 007022 Indianapolis, IN MAJ 9/1/2022
Kokosing Industrial, Inc. 47-2946608 012309 Columbus, OH MAJ 6/2/2023
Kenmore Construction 34-0802152 006456 Akron, OH MAJ 6/8/2022
EMERGENCY DESIGNATION is not requested at this time.
ECONOMIC / ENVIRONMENTAL IMPACT: This project will increase the beneficial re-use of biosolids in the liquid land application and deep row hybrid popular (DRHP) programs by providing more anaerobically-digested Class B biosolids. The primary goal of this project is to provide sufficient expanded anaerobic digestion facilities and all necessary associated piping and pumping capacity to successfully accommodate the addition solids produced by the Chemically Enhanced Primary Treatment (CEPT) process and the additional solids loadings to the SWWTP resulting from the anticipated growth of the population of the City of Columbus.
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