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City of Pleasanton Table of Contents Final Water Supply Assessment Stoneridge Drive Specific Plan Amendment and Staples Ranch Project 6.1.2 Local -City of Pleasanton Demands ...............................................................................6-3 6.1.3 Staples Ranch Project Demands .....................................................................................6-5 7.0 Supply-Demand Comparison ........................................................................................................7-1 7.1 Regional Water Supply Sufficiency ...............................................................................................7-1 7.2 Local Water Supply Sufficiency -City of Pleasanton ................................................................... 7-3 7.2.1 Staples Ranch Project Water Supply Sufficiency ............................................................7-4 8.0 Conclusion ....................................................................................................................................8-1 APPENDIX A LIST OF TABLES Table 5-1: Average Annual Precipitation, Evapotranspiration and Irrigation Demands .............. .............5-6 Table 5-2: Zone 7 Water Supply Sources .................................................................................... ...........5-14 Table 5-3: Zone 7 Single Driest Year Water Supply (AFA) ......................................................... ...........5-16 Table 5-4: Zone 7 Multiple Dry Year Water Supply (AFA) .......................................................... ...........5-17 Table 5-5: Zone 7 Historical Deliveries to City of Pleasanton 2002-2006 (AFA) ......................... ...........5-17 Table 5-6: City of Pleasanton Normal/Average Year Supply Sources (AFA) .............................. ...........5-18 Table 6-1: Zone 7 Historical Deliveries to Retailers 2002-2006 (AFA) ........................................ .............6-1 Table 6-2: Livermore-Amador Valley Population Projections ...................................................... .............6-2 Table 6-3: Zone 7 Projected Water Demands (AFA) ................................................................... .............6-2 Table 6-4: City of Pleasanton Treated Water Purchases 2002-2006 (AFA) ................................ .............6-3 Table 6-5: City of Pleasanton Normal/Average Year Total Demands ......................................... .............6-4 Table 6-6: Dry Year Supply and Demand with Voluntary 10% Conservation (AFA) ................... .............6-4 Table 6-7: Dry Year Supply and Demand with Voluntary 25% Conservation (AFA) ................... .............6-5 Table 6-8: Proposed Staples Ranch Project Water Demand ...................................................... .............6-6 Table 7-1: Zone 7 2007 Long-term Sustainable Water Supply .................................................... .............7-1 Table 7-2: Zone 7 Single Driest Year Water Supply and Demand (AFA) .................................... .............7-2 Table 7-3: Zone 7 Multiple Dry Years Water Supply and Demand (AFA) ................................... .............7-2 Table 7-4: Zone 7 Projected Average Year Supply and Demand (AFA) ..................................... .............7-3 Table 7-5: City of Pleasanton Normal/Average Year Supply and Demand Comparison (AFA) .. .............7-4 LIST OF FIGURES Figure 1: Regional and Project Location ...................................................................................................2-4 Figure 2: Proposed Staples Ranch Land Use Map ..................................................................................2-5 Figure 3: Zone 7 Service Area and Local Retailers ..................................................................................5-2 Figure 4: Regional Hydrology and Arroyo Systems ..................................................................................5-4 Figure 5: City of Pleasanton Service Area ................................................................................................5-5 Figure 6: Groundwater Basins ................................................................................................................5-11 P:~Projecls - WP OnIyW1182.01 Staples Ranch WSAIFinahFinal WSA.doc