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� Strategic Plan TREATMENT AT SAN LEANDRO Several strategies are proposed to reduce the complexity of the existing plant and to make the plant less labor intensive. These include: ■ Simplified process operation - This strategy could include elimination of duplicate or under-utilized process elements. For example, the extra capacity of the existing aeration basins could be used to replace the need for the bio-tower or the existing old contact stabilization tanks demolished. ■ Simplify Plant Piping - The biggest factor that contributes to the labor intensive plant is the maze of piping and valves. Many of the piping systems appear to be redundant or designed to provide treatment flexibility that is no longer required. For example, the digester piping could be simplified by eliminating unused overflow, drawoff and mixing piping. Estimated costs for plant simplification are given in Table 6-5. Also included in these costs are costs for a chlorine leak treatment facility that is recommended if the WPCP is retained. The advantages and disadvantages for continued treatment at the WPCP are given in Table 6-6. RECLAMATION An obvious strategy to avoid future costs of compliance with new regulations is to reduce the amount of effluent discharged by maximizing reclamation. As shown in Section 2, about 80% of the plant flows can be utilized during the irrigation season. There will be about 120 days a year when reclamation for irrigation will not be possible because of unfavorable weather conditions and low evapo-transpiration rates. It is possible to store effluent during the winter months and distribute the rest of the year. For San Leandro this would require 00142.001