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Section 2: Water Supply Options and Alternatives Water Supply Alternatives Study 2-6 DRAFT for review purposes only. Use of contents on this sheet is subject to the limitations specified at the end of this document. Water Supply Alternatives Study-Draft Report.docx Alternative 2 (Reduced Baseline) is similar to the Baseline Project but involves adding treatment to Well 8 only (and not Wells 5 and 6). The treatment facility would involve four treatment trains with two vessels per train and a system peak design flow of 3,500 gpm from Well 8 (i.e., 2,300 gpm less than Alternative 1). Compared to Alternative 1, this alternative requires the same improvements to treated water distribution piping and a slightly larger booster pump station at Zone 7’s Turnout 4 than that required for near-term infrastructure improvements to accommodate future demands (Appendix E). Alternative 3 (Two New City Wells) involves constructing two new wells, each assumed at 3,000 gpm pumping capacity (i.e., total 6,000 gpm), west of the existing PFAS plume. For the purposes of bracketing this concept, this alternative assumes one new well in Del Prado Park and one new well in Bernal Park, as shown in Figure 2-3. New well construction would be comparable to the City’s existing wells and include drilling groundwater layers 6 through 9 or 10 at a boring depth of 685 feet (ft) and screening from 150 ft to 650 ft. Compared to Alternatives 1 and 2, this alternative requires more improvements to treated water distribution piping but a slightly smaller booster pump station at Zone 7’s Turnout 4 (Appendix E). Figure 2-3. Alternative 3 (two new wells) overview