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City of San Marcos <br />Water Reuse System <br />Asset Management Plan <br />0 20 40 60 80 100 120 <br />Pipe Age (years) <br />Figure 8.3 — Reclaim Valves Survival Function <br />—Blowoff <br />»1(nnIIIIIIIIIIIIIIButteIy <br />Gate <br />This basic survival curve data in combination with asset age and replacement costs data in the <br />asset inventories can provide a good forecast of the aggregate asset rehabilitation or <br />replacement requirements into the future. The long -term forecast analysis is based on asset <br />replacement costs and provides a conservative asset renewal forecast since asset rehabilitation <br />costs are typically lower. The long -term forecast does not take into account future growth, <br />expansion, or changes to future installations. <br />8.2 Reuse Asset Survival Trends <br />Figure 8.4 shows the long -term forecast for the City's reuse system replacement and <br />rehabilitation through the year 2080. As shown in Figure 8.4, replacement or rehabilitation of <br />controls should begin around 2025 and represents the major reinvestment requirements until <br />2080 when major structures, pumps, piping and valves will begin to require some major <br />February 2016 Page 45 <br />