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Last modified
3/14/2025 11:12:50 AM
Creation date
3/14/2025 11:11:54 AM
Metadata
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Template:
Official Documents
Official Document Type
Work Order
Approved Date
02/11/2025
Control Number
2025-041
Agenda Item Number
9.X.
Entity Name
Tetra Tech
Subject
Engineering Services Work Order No. 4 for Hobart Water Treatment Plant Post
Filtration Improvements, Alternatives Analysis
IRCDUS Proj. ID: 22-23.556
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II. SCOPE OF WORK <br />Task 1— Project Management <br />This task consists of overall management of the project services during the alternatives analysis <br />technical memorandum development. Tasks include QA/QC, budget management, monthly <br />invoicing, tracking and status of project, schedule monitoring and coordination with the County. <br />Task 2 — Proiect Kickoff and Site Visit <br />Attend a project kickoff meeting with the County to establish goals and outline of the alternatives <br />analysis technical memorandum. Following the meeting, perform a site visit with operations staff. <br />Task 3 — Data Review and Workshop <br />1. Review of existing data and initial development of the conceptual alternatives. <br />2. Attend a workshop with the County to discuss priorities for plant operations and support facilities <br />and discussion of preliminary alternatives with County staff. It is anticipated that 2 to 3 <br />alternatives will be identified for the County's consideration for integrating both the north and <br />south systems at the Hobart WTP into one. Each alternative will evaluate life cycle cost, impact to <br />plant operations, overall feasibility of implementation, and anticipated phasing for implementing <br />the improvements at the WTP. The timing of the workshop will be coordinated with the County. <br />Task 4 — Alternatives Analysis Evaluation <br />The objectives of the Alternatives Analysis will generally include the following for each alternative <br />proposed: <br />a. System hydraulic evaluation. The evaluation will include 1) reviewing the existing system <br />hydraulics and 2) proposed system hydraulics with each alternative. A summary of each <br />alternative and the impact it will have on the existing system hydraulics will be provided. <br />Proposed plan for demolition and removal of equipment and structures. Each alternative <br />will include a proposed plan for demolition of any identified equipment that is necessary <br />to demolish or remove in order to implement the proposed alternative. This will require <br />evaluation of site/civil constraints and additional space as needed, structural <br />impacts/modifications to existing structures, and demolition or removal of existing <br />equipment. <br />Proposed project phasing. Each alternative will have a proposed project phasing plan in <br />order to assist the County in evaluating the timeline anticipated for implementing the <br />proposed improvements. The proposed project phasing will include considerations for <br />minimizing plant downtime. <br />d. Design criteria including any preselection of equipment. If an alternative requires the <br />addition of new equipment, such as pumps, a new clearwell and associated <br />appurtenances, degasification, scrubbers, chemicals or other equipment, the design <br />criteria will be preliminarily established. <br />JCR/pt/ IRCDUS Project ID 12.24.504 O TETRATECH <br />Tt #200BP Indian River -2- 11/12/24 <br />
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