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Chapter 6 <br />Water Supply Characterization <br />THE CITY OF <br />PL£ASANTON. <br />6.2.9 Summary of Existing and Planned Sources of Water <br />Table 6-9 summarizes actual water supplies for the City in 2020, while Table 6-10 summarizes projected <br />water supplies for the City through 2045. <br />Table 6-9. Water Supplies — Actual (DWR Table 6-8 Retail) <br />Water Supply <br />NOTES: Volumes are in AF. Recycled water use includes approximately 3 AF of use at the DSRSD RWTF. <br />Table 6-10. Water Supplies — Projected (DWR Table 6-9 Retail) <br />Report To the Extent Practicable <br />2025 2030 2035 2040 2045 (opt) <br />Additional Detail on <br />Water Supply <br />Drop dawn list Reasonably Total Right or Reasonably Total Right or Reasonably Total Right or Reasonably Total Right or Reasonably Total Right or <br />Available Safe Yield Available Safe Yield Available Safe Yield Available Safe Yield Available Safe Yield <br />Volume (optional) Volume (optional) Volume (optional) Volume (optional) Volume (optional) <br />Purchased or Imported <br />Additional Detail on <br />Total Right or <br />Drop down list <br />Water Supply Actual Volume* <br />Water Quality <br />Safe Yield* <br />13,240 <br />13,739 <br />14,237 <br />Drop Down List <br />(optional) <br />Groundwater (not <br />Livermore Valley <br />Purchased or Imported <br />desalinated) <br />Basin <br />3,500 <br />3,500 <br />Zone 7 <br />11,752 <br />Drinking Water <br />Water <br />Groundwater (not <br />Livermore Valley <br />of Livermore WRP <br />1,500 <br />1,650 <br />1,650 <br />1,800 <br />3,027 <br />Drinking Water <br />Total <br />desalinated) <br />Basin <br />19,387 0 <br />20,036 0 <br />20,036 0 1 <br />DSRSD RWTF and City <br />Recycled Water <br />1,228 <br />Recycled Water <br />of Livermore WRP <br />Total <br />16.006 <br />0 <br />NOTES: Volumes are in AF. Recycled water use includes approximately 3 AF of use at the DSRSD RWTF. <br />Table 6-10. Water Supplies — Projected (DWR Table 6-9 Retail) <br />Report To the Extent Practicable <br />2025 2030 2035 2040 2045 (opt) <br />Additional Detail on <br />Water Supply <br />Drop dawn list Reasonably Total Right or Reasonably Total Right or Reasonably Total Right or Reasonably Total Right or Reasonably Total Right or <br />Available Safe Yield Available Safe Yield Available Safe Yield Available Safe Yield Available Safe Yield <br />Volume (optional) Volume (optional) Volume (optional) Volume (optional) Volume (optional) <br />Purchased or Imported <br />Water <br />Zone 7 <br />13,240 <br />13,739 <br />14,237 <br />14,736 <br />14,736 <br />Groundwater (not <br />Livermore Valley <br />desalinated) <br />Basin <br />3,500 <br />3,500 <br />3,500 <br />3,500 <br />3,500 <br />DSRSD RWTF and City <br />Recycled Water <br />of Livermore WRP <br />1,500 <br />1,650 <br />1,650 <br />1,800 <br />1,800 <br />Total <br />18,240 <br />0 18,889 0 <br />19,387 0 <br />20,036 0 <br />20,036 0 1 <br />*Units ofineasure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Tab <br />NOTES: Volumes are io AF. The City's Groundwater Pumping Quota (GPQ) is 3,500 AFY <br />6.2.10 Climate Change Impacts <br />There are concerns that a warming trend that occurred during the latter part of the 20th century will likely <br />continue through the 21st century. Numerous studies have been conducted to evaluate the potential <br />impacts of these changes to water resources. Based on these studies, climate change could impact <br />California's water resources in the following ways: <br />• Reductions in the average annual snowpack due to a rise in the snowline and a shallower <br />snowpack at low and medium elevations and a shift in snowmelt runoff to earlier in the year <br />WEST YOST <br />N-680-60-20-04-WP-R-680-2020UWMP <br />6-32 <br />City of Pleasanton <br />2020 Urban Water Management Plan <br />May 2021 <br />