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City of Pleasanton Recycled Water Project CEQA Addendum Chapter 2 Description of Proposed Project Changes This chapter provides a summary of the background, project goals and objectives, original Proposed Project description, and a detailed description of the proposed changes to the City's Proposed Recycled Water Project(Proposed Project). 2.1 Background As described in the IS/MND, the City is located in Alameda County approximately 35 miles southeast of San Francisco, situated at the junction of 1-580 and I-680. As shown on Figure 1, the City's water service area encompasses an area of approximately 22 square miles; servicing city residents, commercial customers, and approximately 250 customers in unincorporated Alameda County along Kilkare Road just north of the town of Sunol. As of 2010, Pleasanton supports a residential population of 69,300. By 2030 Pleasanton's population is projected to grow by another 19 percent to 82,300. The residential sector accounts for the City's largest water consuming sector (61percent), followed by landscape irrigation (27 percent), commercial (12 percent), and lastly industrial sector(<1percent). The importance of efficient and purposeful use of water in California has come under legislative focus through the passage of the Water Conservation Bill of 2009. Under this law, Pleasanton has set the goal of achieving a twenty percent reduction in water consumption by 2020. This equates to a "target" of 195 gallons per capita per day (gpcd), a twenty percent reduction from a baseline of 244 gpcd. Two sources of water supply Pleasanton's service area: 1) local groundwater from three wells owned and operated by the City (approximately 20% of the annual demand), and 2)the purchase of water from Zone 7 (approximately 80%of the annual demand). According to the City's agreement with Zone 7, Pleasanton pumps a maximum of 3,500 acre-feet per year (afy) from its wells, with a carryover of 700 Acre Feet of unused pumping quota from one year to another. The City's distribution system currently consists of 22 storage reservoirs with a maximum capacity of 37 million gallons. One of the City's existing storage reservoirs, Tassajara Reservoir, is being considered for conversion to a recycled water storage facility for this Proposed Project/Action. It also includes 14 pressure zones, 14 pump stations, 2,500 fire hydrants and 306 miles of pipelines. This system services approximately 21,700 connections; of which 90 percent are residential customers, 5.5 percent are commercial/institutional customers,4.5 percent are irrigation customers (for commercial and multi-family residential landscape meters), and less than 1percent are industrial customers. 2.2 Project Goals and Objectives The purpose of the Proposed Project is to construct and operate a new recycled water system to replace/augment existing irrigation supplies in the City's service area. The development of recycled water service within the City will lessen the demand for Zone 7 Water Agency (Zone 7) potable water supplies and help the City meet the State of California's Water Conservation Act of 2009, which requires a 20 percent reduction in urban per capita water use by the year 2020. Furthermore, the addition of recycled water to the City's water supply portfolio will increase its water system's reliability since recycled water is a local supply within the City's control and is drought-resistant. December 2014 2-1