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, Mod #2. Hazen and Sawyer will provide Preliminary Design Services (Step 1), Detailed Design and Bidding Services (Step 2), and Services During Construction (Step 3).
The initial phase of this contract provided Professional Engineering Services for Preliminary Design (Step 1). The second phase provided Professional Engineering Services for Detailed Design and Bidding Services (Step 2) and was funded by Modification No. 1. Modification No. 1 was planned and anticipated. This request for a modification (Modification No. 2) was not planned and will provide additional and previously unanticipated Professional Engineering Services for Detailed Design (Step 2). A future modification is anticipated as the third phase of Professional Engineering Services for Engineering Services During Construction (Step 3).
The scope of work for this project generally 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 PDR, Step 2, Detailed Design began. Detailed Design will prepare co...
Click here for full text