Explanation
1. BACKGROUND: This legislation authorizes the Director of Public Utilities to modify the professional engineering services agreement with Hazen and Sawyer for the Jackson Pike Wastewater Treatment Plant (JPWWTP) Biosolids Land Application Improvement Project, modification number 1. This modification is the second phase and will provide Professional Engineering Services for Detailed Design (Step 2) and bidding services. A future modification is anticipated as the third phase for Engineering Services During Construction (Step 3).
The scope of work for this project includes a new or modified liquid (10%TS) land application load-out facility and the assessment of the solids train to identify potential improvements, additional equipment requirements, and upgrades to meet the City’s solids processing needs, e.g. the existing 14 biosolids tanks, pumping-mixing-piping systems, and other solids related ancillary equipment.
Step 1 of this project, Preliminary Design, included the following five tasks: 1. Gather process information and refine project goals, 2. Conduct a process condition assessment of the land application process, 3. Participate in a Business Case Evaluation (BCE), 4. Generate a Preliminary Design Report (PDR) with preliminary drawings and equipment specifications, 5. Revise and submit the Final PDR.
Upon the City’s approval of the Preliminary Design Report, Step 2, Detailed Design, will begin. This proposed modification will provide funding for Step 2. Detailed design will prepare construction contract documents (including specifications and drawings) in accordance with City of Columbus Division of Sewerage and Drainage standards, guidelines, and direction for construction and implementation of the proposed facility. Detailed design also includes plan and specification review meetings, assisting in negotiations, permitting, and other matters with U.S. EPA, Ohio EPA, and other government agencies as necessary, and bidding services (whic...
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