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Exhibit B Cost Detail Work Order No. 10 TASK 05 Feasibility Report Draft Feasibility Report AtkinsRealis AtkinsRealis will prepare a Draft Feasibility Report which will consider key assumptions and design constraints, summarize the customer base, detail projected flow rates, and provide a schematic collection system design by area given with a unique identifier. The collection system design will include: • Gravity sewer mains and anticipated diameter • Force mains and anticipated diameter • Approximate locations of proposed sewer network • Approximate locations of public lift stations • Recommended improvements to existing infrastructure provided by the County's assigned Hydraulic Modeler • Connection points to existing sanitary sewer infrastructure as recommended by the County's Hydraulic Modeler A general and preliminary Project Schedule will be developed to outline the key areas of the initiative, including development of Construction Documents, Bid Phase, and Construction. This schedule is intended solely for planning purposes and is representative of all conversion areas. As the project progresses, the schedule will require updates to accommodate evolving project requirements, regulatory considerations, and coordination with key stakeholders. A feasibility level estimate representing the anticipated construction bid amounts will be developed for each conversion area using the most current information available. These cost estimates are intended to provide a preliminary understanding of the financial implications associated with the recommended collection system and serve as a foundational reference for further decision-making and budgeting. Upon submitting the electronic version of the Draft Feasibility Report, AtkinsRealis will schedule a workshop with County Staff and their Hydraulic Modeler to review the document and discuss their comments. Final Feasibility Report Following the Draft Feasibility Report Workshop, the report will be updated to address review comments. Final deliverables will include an electronic copy and twelve hard copies of the Final Report. An electronic version of the adjudicated review comments will be provided to the County PM for distribution. Upon submitting the electronic version of the Final Feasibility Report, AtkinsRealis will schedule a Workshop with County Staff to discuss attendance and presentations to be made with the Board of County Commissioners and City of Sebastian Council. Deliverables: Draft Feasibility Report, Workshop agenda and notes, Final Feasibility Report with adjudicated review comments. -- -- - - - City of Sebastian Buildout of Septic to Sewer Conversion Feasibility Study Page 6 of 12