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Section 4: Preferred Alternative and Implementation Plan Water Supply Alternatives Study <br />4-9 <br />DRAFT for review purposes only. Use of contents on this sheet is subject to the limitations specified at the end of this document. <br />Water Supply Alternatives Study-Draft Report.docx <br /> <br />Figure 4-2. Draft timeline for contingency plan to pivot from implementing Alternative 3 (Two New Wells) to Alternative 2 (Reduced Baseline) <br />11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 <br />Predesign <br />Evaluate locations of City-only and co-located facilities <br />Drill exploratory/test wells <br />Zone 7 updated GW model and Well Siting Master Plan <br />Funding (grants and/or loans) <br />Design and Construction of PFAS Facility and Well 8 Rehab: Traditional (DBB) Approach <br />Permitting <br />NEPA/CEQA (a ss umes no I S/MND CEQA requi red, bes t ca se s cenari o for 12 mos .) <br />Permitting (i ncl udi ng: BAAQMD, PG&E, Zone 7, SWRCB) <br />DSRSD and PUSD agreements (for PFAS di spos a l and us e of s ta gi ng a rea ) <br />Field investigations/special design coordination <br />PFAS media prequalification (RSSCT tes ti ng) <br />PFAS vessel prepurchase (i ncl udi ng document prep) <br />PFAS treatment facility and Well 8 site <br />Complete remaining 50% of design <br />Well facility contractor procurement (including RFP)RFP Proposal < Contractor RFP and proposal response, review, selection, and contract negotiations <br />Well 8 rehab Well 8 rehab <br />Treatment facility construction Treatment facility construction <br />Design and Construction of Pipelines and Connecting Infrastructure: Traditional (DBB) approach <br />Engineer procurement RFP Proposal < Engineer procurement <br />Permitting <br />NEPA/CEQA <br />Utility investigations (potholing/geotech borings) <br />Design of pipelines and connecting infrastructure <br />Contractor procurement RFP Proposal < Contractor procurement <br />Construction of pipelines and connecting infrastructure <br />Finance <br />Total Project Cash Flow by FY ($M) <br />Project Elements <br />Year 2023 2024 <br />$2M (up to $4M)$5M (up to $6M)$10M (up to $12M)$13M (up to $15M)$1M <br />2026 2027 2028 <br />Month <br />Early CEQA consultation for 2 well sites <br />2025 <br />Estimated at $29M (up to $34M) for design and construction. <br />Predesi gn <br />Procurement <br />Design <br />Constructi on/utility investigati ons <br />Legend