Explanation
1. BACKGROUND: This legislation authorizes the Director of Public Utilities to modify (Mod #1) an existing professional engineering services agreement with Brown and Caldwell for Detailed Design Services for the SWWTP Chemically Enhanced Primary Treatment (CEPT) - Preliminary Treatment project. This project is one of three projects to provide Chemically Enhanced Primary Treatment (CEPT) at the Southerly Wastewater Treatment Plant (SWWTP), as approved by the Ohio EPA. The CEPT facilities will provide additional plant capacity to treat wet weather flows in excess of 330 million gallons per day (MGD).
This project, known as SWWTP CEPT - Preliminary Treatment, will focus on upgrades and modifications to the headworks facility, solids handling facilities, and plant control system. This is a contract for professional engineering (Design Professional or “DP”) services and Services During Construction. The initial phase of this contract provided Step 1, Preliminary Design Services, for the SWWTP CEPT - Preliminary Treatment. During preliminary design, the number and type of raw sewage pumps, fine screens, and gravity thickeners that should be added and/or replaced was determined. Also, the extent of structural renovations, the number of anti-siphon valves, variable frequency drives, and gates that should be added and/or replaced, and the extent of HVAC improvements was determined.
The next phase of this engineering contract will provide Step 2, Detailed Design and Bidding Services. This contract modification is requesting funding for this phase of the project. During this phase, the DP will develop detailed construction contract documents to define the construction work. Construction contract documents will consist of drawings, specifications, and bidding documents based upon the City’s standards and preferences. Detailed design will also include flushing water design improvements, SCADA upgrades, a power quality analysis, and a Reliabilty-Centered Maintena...
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