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Procurement Contract No. 14812 SUPPLEMENTAL A The County of Alameda contracted with Pakpour Consulting Group to assess the Castlewood County Service Area's (CSA) existing water and sewer systems with a goal to identify existing and future deficiencies with the water and sewer system, develop capital improvement projects to mitigate the deficiencies, and identify funding mechanisms to asset in paying for the Capital Improvement Programs. The report was finalized in October 2012 and according to the report, overall the existing water system was assessed to be in good condition with the exemption of a few critical elements such as the Upper Level redwood tanks, storage capacity in the system, and the water main crossing underneath the Arroyo de Laguna. The water main crossing underneath the Arroyo de Laguna has been replaced to address that concern as well as a number of other minor issues listed in the report. The main issue required with the system is addressing the storage capacity and the replacement of the old deteriorating Upper Level Redwood Tanks in the system. The County contracted with Pakpour Consulting Group again to prepare an analysis of the storage required within the system, review alternative locations and options, provide cost estimates for various recommendations, and provide a final recommendation for replacement of the Upper Level Redwood Tanks. In July 2016 the report was finalized with a final recommendation for replacement of the two 100,000 gallon redwood tanks with dual 150,000 gallon steel or concrete tanks. Based on review with the County's operation & maintenance service provider, the City of Pleasanton's recommendation is that the County replace with 2 - 150,000 gallon steel tanks. Supplemental A Page 1 of 1