14 ATTACHMENT 1 EXHIBIT A - Laserfiche WebLink

Chapter 6 Water Supply Characterization THE CITY OF PL£ASANTON Deteriorating levees could fail as a result of increased runoff, more intense storms, sea level rise, or lack of maintenance. Failure of the levees would have catastrophic impacts on the Delta, including its islands, and have huge impacts on water supply operations. Climate change may also impact Zone 7's other operations. With respect to groundwater management, the SMP, groundwater recharge operations, and Chain of Lakes operations may be impacted by changes in precipitation patterns and intensities. Similarly, operation of Lake Del Valle could be impacted by the need to maintain more flood control storage capacity to deal with more intense rainfall events. Lastly, flood control operations in general may be impacted by more intense and more frequent flooding events. The scenarios in the 2019 DCR account for climate change impacts based on 2035 emissions levels and 45 -centimeter sea level rise; therefore, these impacts have been incorporated into Zone 7's water supply planning efforts. Zone 7 has also evaluated the impacts of climate change to local water supplies and documented those evaluations in the 2019 WSE Update. 6.3 ENERGY INTENSITY In accordance with CWC §10631.2(a), the energy intensity to provide water service to the City's customers over a one-year period is presented in this section to the extent that the information is available. The amount of energy to divert, pump, treat, and distribute the City's water supply within the system it owns and operates is included. The amount of energy that Zone 7 requires to treat raw water and deliver potable water to the City is excluded. Water energy intensity is the total amount of energy, calculated on a whole -system basis, used to deliver water to the City's customers for use. Energy intensity is the total amount of energy in kilowatt-hours (kWh) expended per AF of water taken from the City's source to its point of delivery. Understanding the whole -system energy intensity would allow the City to develop the following water supply management and system operation strategies: • Identifying energy saving opportunities, as energy consumption is often a large portion of the cost of delivering water • Calculating energy savings and greenhouse gas emissions reductions associated with water conservation programs • Identifying potential opportunities for receiving energy efficiency funding for water conservation programs • Informing climate change mitigation strategies • Benchmarking energy use at each water acquisition and delivery step and comparing energy use among similar agencies In Table 6-11, the energy intensity of the City's water service is calculated for 2019, as it provides a typical year's energy use. In 2020, shelter -in-place orders and business restrictions related to the COVID-19 pandemic may have altered water use by the City's customers. The total energy intensity for the City's water service is approximately 203 kWh/AF. Note, 2019 energy consumption information isfrom billing statements received in 2019, which may not exactly reflect energy use from January 1 through December 31. WEST YOST 6-34 City of Pleasanton 2020 Urban Water Management Plan May 2021