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2015 Urban Water Management Plan

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2015 Urban Water Management Plan FINAL - JUNE 2016 CITY OF PLEASANTON 2015 Urban Water Management Plan (THIS PAGE LEFT BLANK INTENTIONALLY) Final 2015 Urban Water Management Plan ———— Prepared for City of Pleasanton June 2016 680-12-15-01 June 7, 2016 Project Manager Date Elizabeth T. Drayer, PE June 7, 2016 QA/QC Review Date James P. Connell, PE (THIS PAGE LEFT BLANK INTENTIONALLY) Table of Contents Executive Summary ES.1 Introduction .............................................................................................................................. ES-1 ES.2 Water Code Requirements ...................................................................................................... ES-1 ES.3 Legislative Changes from 2010 UWMP ................................................................................... ES-2 ES.4 Plan Organization .................................................................................................................... ES-2 ES.5 Plan Review and Adoption....................................................................................................... ES-3 Chapter 1. Introduction and Overview 1.1 Introduction .................................................................................................................................... 1-1 1.2 Importance and Extent of City’s Water Management Planning Efforts ......................................... 1-1 1.3 Changes from 2010 UWMP ........................................................................................................... 1-1 1.4 Plan Organization .......................................................................................................................... 1-3 Chapter 2. Plan Preparation 2.1 Basis for Preparing a Plan ............................................................................................................. 2-1 2.2 Regional Planning ......................................................................................................................... 2-1 2.3 Individual or Regional Planning and Compliance .......................................................................... 2-2 2.4 Fiscal or Calendar Year and Units of Measure ............................................................................. 2-2 2.5 Coordination and Outreach ........................................................................................................... 2-3 2.5.1 Wholesale and Retail Coordination...................................................................................... 2-3 2.5.2 Coordination with Other Agencies and the Community ....................................................... 2-4 2.5.2.1 Coordination with Other Agencies .............................................................................. 2-4 2.5.2.2 Coordination with the Community .............................................................................. 2-4 2.5.3 Notice to Cities and Counties ............................................................................................... 2-5 Chapter 3. System Description 3.1 General Description ....................................................................................................................... 3-1 3.2 Water Service Area ....................................................................................................................... 3-1 3.3 Water Supply ................................................................................................................................. 3-1 3.4 Water System Description ............................................................................................................. 3-2 3.4.1 Zone 7 Supply Turnouts ....................................................................................................... 3-2 3.4.2 City Groundwater Wells ....................................................................................................... 3-3 3.4.3 City Potable Water Distribution System ............................................................................... 3-3 3.4.4 Emergency Interties ............................................................................................................. 3-3 3.4.5 Recycled Water Facilities ..................................................................................................... 3-3 3.5 Service Area Climate ..................................................................................................................... 3-4 3.6 Service Area Population and Demographics ................................................................................. 3-5 3.6.1 Service Area Population ...................................................................................................... 3-5 3.6.2 Demographic Factors ........................................................................................................... 3-5 i City of Pleasanton June 2016 2015 Urban Water Management Plan o\c\680\12-15-01\wp\uwmp\122215_TOC Table of Contents Chapter 4. System Water Use 4.1 Recycled Versus Potable and Raw Water Demand ...................................................................... 4-1 4.2 Water Uses by Sector .................................................................................................................... 4-1 4.3 Distribution System Water Losses................................................................................................. 4-4 4.4 Estimating Future Water Savings .................................................................................................. 4-5 4.5 Water Use for Lower Income Households ..................................................................................... 4-5 4.6 Climate Change ............................................................................................................................. 4-6 Chapter 5. SB X7-7 Baselines and Targets 5.1 Updating Calculations from 2010 UWMP ...................................................................................... 5-1 5.2 Baseline Periods ............................................................................................................................ 5-2 5.3 Service Area Population ................................................................................................................ 5-2 5.4 Gross Water Use ........................................................................................................................... 5-3 5.5 Baseline Daily Per Capita Water Use ............................................................................................ 5-4 5.6 2015 and 2020 Targets ................................................................................................................. 5-5 5.7 2015 Compliance Daily Per Capita Water Use ............................................................................. 5-6 5.8 Regional Alliance ........................................................................................................................... 5-6 Chapter 6. System Supplies 6.1 Purchased or Imported Water ....................................................................................................... 6-1 6.1.1 Pleasanton Water Supply Contract with Zone 7 .................................................................. 6-2 6.1.2 Zone 7 Water Supply Sources ............................................................................................. 6-2 6.1.2.1 Imported Surface Water Supply ................................................................................. 6-3 6.1.2.1.1 State Water Project ........................................................................................... 6-3 6.1.2.1.1.1 SWP Table A Amount ............................................................................. 6-4 6.1.2.1.1.2 Article 21 Water (Interruptible or Surplus Water) .................................... 6-5 6.1.2.1.1.3 Article 56d Water (Turnback Pool Water) and Multi-Year Pool Demonstration Program (Water Pool Program) ..................................... 6-5 6.1.2.1.1.4 Lower Yuba River Accord ........................................................................ 6-5 6.1.2.1.2 Byron Bethany Irrigation District ....................................................................... 6-6 6.1.2.2 Local Surface Water Runoff ....................................................................................... 6-6 6.1.2.3 Local Storage ............................................................................................................. 6-6 6.1.2.3.1 Lake Del Valle ................................................................................................... 6-6 6.1.2.3.2 Livermore Valley Groundwater Basin ............................................................... 6-7 6.1.2.3.3 Chain of Lakes .................................................................................................. 6-8 6.1.2.4 Non-Local Storage ...................................................................................................... 6-8 6.2 Groundwater .................................................................................................................................. 6-9 6.2.1 Groundwater Basin Description ........................................................................................... 6-9 6.2.2 Groundwater Management ................................................................................................ 6-10 6.2.2.1 Groundwater Quantity .............................................................................................
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