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II <br />I1 <br />I Executive Summary <br /> <br /> ES.I Background <br /> <br /> Redwood City (the City) is 100% reliant on one source of potable water supply, the San <br /> Francisco Hatch Hetchy regional water system. Currently, the City is consuming approximately <br /> 1,000 acre-feet per year (AF/yr)over the contractual (wholesale) supply assurance of 12,243 <br /> AF/yr. The Redwood City Water Usa Forecast for 2000 to 2020, dated June 20, 2002 (prepared <br /> by John Whitcomb, PhD), includes water supply projections associated with future housing, <br /> employment, and population, etc. The Water Use Forecast explores future water supply <br /> scenarios including the 'worst case' scenario that excludes any water conservation and a <br /> scenario that takes into account passive water conservation. The potential water supply <br /> savings associated with an active water conservation scenado are addressed in the City's <br /> Urban Water Management Plan. Based on these forecasts and planning, the City will need <br /> additional water supplies to meet both current and future needs. <br />I The City has four options to reduce current demands on the Hatch Hetchy supply, <br /> in <br /> order <br /> to <br /> comply with the supply assurance and provide supply for future growth: <br />I water transfers from other agencies that use the Hetch Hetchy regional <br /> 1. <br /> Negotiate <br /> system <br /> <br /> 2. Negotiate a new source of potable water supply via the regional system ('wheeling') <br /> <br /> 3. Implement water conservation measures <br /> I 4. a water recycling for landscape irrigation and industrial uses <br /> mplement <br /> program <br /> <br /> This study builds upon the joint recycled water pilot project being operated in Redwood Shores <br /> by the South Bayside System Authority (SBSA) and the City, and.on the Water Recycling <br /> Feasibility Study for the Redwood Shores Area (KennedylJenks Consultants, January 22, <br /> 2002). <br /> <br /> ES.2 Market Assessment <br /> <br /> Three geographical areas within the City were reviewed relative to providing a new man, et for <br /> recycled water use. The areas generally include Redwood Shores. the 'Greater Bayfront Area' <br /> and Central Redwood City. Potential recycled water uses am primarily for landscape irrigation <br /> in Redwood Shores and Central Redwood City. Some industrial uses, and potential for internal <br /> uses such as toilet flushing, exist primarily in the Greater Bayfront area and, to a lesser extent, <br /> Central Redwood City. <br /> I To facilitate subsequent evaluations in this report, the potential <br /> cuStolT~FS <br /> were <br /> grouped <br /> into <br /> four classifications: <br /> <br /> Il <br />I Water Recycling Feasibility Study for Redwood City <br /> iv <br /> <br /> <br />