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<br />7A - ATTACHMENT NO.3 <br />Saltworks Proposal- Water Group Summary Report (22 January 2010) Page 5 <br /> <br />TABLE OF CONTENTS <br /> <br />PAGE <br /> <br /> <br />EXECUTIVE SUMMARY ..................................................................................................... .ES-1 <br /> <br />CHAPTER 1 - INTRODUCTION................................................................................................ 1 <br /> <br />1.1 Purpose and Objective of Report .............................................................................. 1 <br /> <br /> <br />1.2 Scope of Analysis..................................................................................................... 1 <br /> <br />1.3 Report Authors ......................................................................................................... 2 <br /> <br />1.4 Documentation......................................................................................................... 3 <br /> <br />CHAPTER 2 - WATER DEMAND PROJECTIONS ................................................................... 4 <br /> <br /> <br />2. 1 Approach.................................................................................................................. 4 <br /> <br />2.2 DMB Water Demand Projections.............................................................................. 4 <br />2.2.1 Residential Indoor Demand........................................................................ 4 <br />2.2.2 Commercial and Institutional Indoor Demand............................................. 5 <br />2.2.3 Landscape Irrigation Demand..................................................................... 6 <br />2.2.4 Green Roof Demand.................................................................................. 7 <br /> <br /> <br />2.2.5 System Losses........................................................................................... 7 <br /> <br />2.2.6 DMB Water Demand Summary .................................................................7 <br />2.3 Redwood City Attachment Q-Based Water Demand Projections ..............................7 <br />2.3.1 Residential Indoor Demand........................................................................ 8 <br />2.3.2 Commercial and Institutional Indoor Demand .............................................8 <br />2.3.3 Landscape Irrigation Demand..................................................................... 9 <br /> <br /> <br />2.3.4 System Losses........................................................................................... 9 <br /> <br />2.3.5 Redwood City Attachment Q-Based Water Demand Summary ................ 10 <br />2.4 Comparison of Water Demand Projections............................................................. 10 <br />2.5 Summary of Findings Regarding Water Demand .................................................... 10 <br /> <br />CHAPTER 3 - WATER SUPPPL Y OPTIONS.......................................................................... 14 <br /> <br /> <br />3.1 Approach................................................................................................................ 14 <br /> <br />3.2 Description of DMB Proposed Water Supplies........................................................ 14 <br />3.3 Potable Water Supply............................................................................................. 15 <br />3.3.1 Description of Existing SFPUC Supply..................................................... 15 <br />3.3.2 Availability of SFPUC Supply for Saltworks Project .................................. 17 <br />3.3.3 Conclusions Regarding Potable Water Supply......................................... 19 <br />3.4 Recycled Water Supply.......................................................................................... 19 <br />3.4.1 Description of Existing Recycled Water Supply........................................ 19 <br />3.4.2 Availability of Recycled Water Supply for Saltworks Project ..................... 20 <br />3.4.3 Conclusions Regarding Recycled Water Supply....................................... 20 <br />3.5 Groundwater Supply............................................................................................... 21 <br />3.5.1 Description of Groundwater Occurrence and Use in the Area................... 21 <br />3.5.1.1 Hydrogeologic Setting.................................................................. 21 <br />3.5.1.2 Groundwater Development and Wells......................................... 22 <br />3.5.1.3 Hydraulic Analysis and Aquifer Parameters ................................. 23 <br />3.5.1.4 Ambient Groundwater Quality...................................................... 28 <br />3.5.2 Unresolved Issues Regarding Groundwater as Source of Supply............. 30 <br />3.5.2.1 Groundwater Quantity (Well Yields and Sustainability) ................30 <br />3.5.2.2 Groundwater Quality.................................................................... 31 <br /> <br /> <br />3.5.2.3 Subsidence.................................................................................. 34 <br /> <br />3.5.2.4 Liquefaction................................................................................. 35 <br />