14 ATTACHMENT 1 EXHIBIT A - Laserfiche WebLink

In November 2009, the Water Conservation Act of 2009 was signed into law as part of a comprehensive water legislation package. Also known as Senate Bill X7-7 (SB X7-7), the Water Conservation Act of 2009 addressed both urban and agricultural water conservation and set a goal of achieving a 20 percent statewide reduction in urban per capita water use by December 31, 2020 (i.e., "20 by 2020"). This chapter demonstrates that the City has achieved its 2020 target reduction by reviewing the City's population and recent water use. 5.1 OVERVIEW AND BACKGROUND To meet the urban water use target required by SB X7-7, each retail supplier was required to determine its baseline water use, as well as its target water use for the year 2020. Water use is measured in gallons per capita per day (GPCD). This chapter provides a review of the methodology the City used to calculate its baseline and its 2020 Urban Water Use Target (target). The City calculated baselines and targets on an individual reporting basis in accordance with SB X7-7 legislation requirements and DWR's Methodologies for Calculating Baseline and Compliance Urban Per Capita Water Use (2016) (DWR's Methodologies). The City's compliance with SB X7-7 was first addressed in its 2010 UWMP, in which the City determined its baseline per capita water use and established and adopted its urban water use targets for 2015 and 2020. SB X7-7 included a provision that an urban water supplier may update its 2020 urban water use target in its 2015 UWMP and may use a different target method than was used in 2010. Also, the SB X7-7 methodologies developed by DWR in 2011 noted that water suppliers may revise population estimates for baseline years when the 2010 Census information became available. The 2010 Census data was not finalized until 2012. In its 2015 UWMP, the City updated its population, baselines, and targets to reflect 2010 Census data. The City demonstrated that it successfully achieved its 2015 interim target and confirmed its 2020 target. The 2020 Census results were not available for inclusion in this UWMP update. Thus, a population estimate (based on Census data and persons -per -connection adjustments) was used with actual water use data to calculate GPCD water use. Using this population estimate, the City verifies that it achieved its 2020 target per capita water use. The potential difference between population estimates herein and the eventual final 2020 Census results is not believed to impact the fundamental conclusions of meeting SB X7-7 requirements. Compliance with the urban water use target requirement is provided in the SB X7-7 2020 Compliance Form, which is included in this plan as Appendix G. 5.2 GENERAL REQUIREMENTS FOR BASELINE AND TARGETS SB X7-7 required each urban water retailer to determine its baseline daily per capita water use over a 10 -year or 15 -year baseline period. The 10 -year baseline period is defined as a continuous 10 -year period ending no earlier than December 31, 2004 and no later than December 31, 2010. SB X7-7 also defined that for those urban water retailers that met at least 10 percent of their 2008 water demand using recycled water, the urban water retailers can extend the baseline GPCD calculation for a maximum of a continuous 15 -year baseline period, ending no earlier than December 31, 2004 and no later than December 31, 2010. In 2008, the City delivered no recycled water; therefore, the City's baseline GPCD was WEST YOST 5-1 City of Pleasanton 2020 Urban Water Management Plan N-080-00-20-04-wP-a-080-2020uwMP May 2021