SFPUC Wholesale Customer Water Demand Projections ... - BAWSCA

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SECTIONONE Introduction The 2001-2002 BAWUA Annual Survey reported that the SFPUC wholesale customers collectively purchased approximately 170 million gallons per day (MGD) from the SFPUC (BAWUA 2002). As previously mentioned, their remaining demands were met through other supply sources. Table 1-2 provides a percentage breakdown of supplies used by wholesale customers to meet demands in their service areas in 2001-2002. Demands met through water conservation are not portrayed in the table because they were not quantified in the BAWUA Annual Survey (BAWUA 2002). Table 1-2 SFPUC Wholesale Customer Source of Supply (2001–2002) 1 Groundwater Supply Other Sources of Supply 2 Recycled Water Supply Wholesale Customer SFPUC Supply Local Surface Water Supply Alameda County Alameda County Water District 24.3% 32.9% 4.4% 38.3% City of Hayward 100.0% San Mateo County City of Brisbane 100.0% City of Burlingame 100.0% CWS - Bear Gulch District 90.6% 9.4% CWS - Mid Peninsula District 100.0% CWS - South San Francisco District 88.9% 11.1% Coastside County Water District 70.3% 11.0% 18.7% City of Daly City 63.6% 36.4% City of East Palo Alto 100.0% Estero MID/Foster City 100.0% Guadalupe Valley MID 100.0% Town of Hillsborough 100.0% Los Trancos County Water District 100.0% City of Menlo Park 96.0% 4.0% Mid-Peninsula Water District 100.0% City of Millbrae 100.0% North Coast County Water District 100.0% City of Redwood City 100.0% 0.1% City of San Bruno 64.4% 35.6% Skyline County Water District 100.0% Westborough Water District 100.0% Santa Clara County City of Milpitas 59.3% 35.0% 5.7% City of Mountain View 89.4% 1.3% 9.2% City of Palo Alto 99.4% 0.6% Purissima Hills Water District 100.0% City of San Jose (portion of north San Jose) 96.0% 4.0% City of Santa Clara 16.2% 61.6% 15.8% 6.4% Stanford University 68.0% 13.6% 18.5% City of Sunnyvale 43.6% 4.9% 46.7% 5.0% 1 Due to rounding, total supply may not add to exactly 100% Source: BAWUA Annual Survey (BAWUA 2002) 2 Other sources include the State Water Project and supplies delivered from Santa Clara Valley Water District CWS - California Water Service (Company) MID - Municipal Improvement District 1-3
SECTIONONE Introduction 1.3 GENERAL CHARACTERISTICS OF THE WHOLESALE CUSTOMER SERVICE AREA Figure 1-1 illustrates the location of the 28 wholesale customers. In general, the wholesale customers are located throughout the Bay Area’s different microclimates with some serving cool coastal areas and others in the warmer inland areas. The wholesale customer service areas vary dramatically in size and character. For example, Los Trancos County Water District encompasses 4.5 square miles and serves approximately 270 residential accounts, while Alameda County Water District encompasses approximately 103 square miles serving 77,000 residential, commercial, industrial, and institutional accounts. Appendix A provides a brief description of each wholesale customer that purchases water from the SFPUC and participated in this study. The following sections of this report provide more detailed information on their water use. 1.4 FORMAT OF THIS REPORT This report consists of the following four main sections: • Approach to Developing Water Demand Projections • Establishing Base-Year Conditions • Water Demand Forecasting • Water Demand Projections The first section, Approach to Developing Water Demand Projections, provides a description of the DSS model used to develop the water demand forecasts. The section introduces the model, its general characteristics, and how it works. The section defines the two primary steps to developing water demand projections (1) establishing base-year conditions and (2) developing water demand forecasts from those base-year conditions. The second section, Establishing Base-Year Conditions, describes the process for establishing base-year conditions for each individual wholesale customer. This section also provides detailed information on the existing water demands for each wholesale customer. The third section, Water Demand Forecasting, explains how the water demand forecasts were developed from the base-year conditions using the DSS model. The last section, Water Demand Projections, provides the actual water demand projections for the SFPUC wholesale customer service area out to the year 2030. The results provided in this section reflect the total demand of each wholesale customer out to 2030, not the amount of water estimated to be purchased from the SFPUC in 2030. The amount of water estimated to be purchased from the SFPUC in 2030 is documented in a technical memorandum, SFPUC Wholesale Customer Water Purchase Estimates (SFPUC 2004). This section also describes the wholesale customer concurrence process associated with the DSS water demand projections. 1-4
Page 1 and 2: San Francisco Public Utilities Comm
Page 3 and 4: List of Tables, Figures, and Append
Page 5 and 6: List of Tables, Figures, and Append
Page 7 and 8: Glossary Account Average gal/day/ac
Page 9 and 10: Executive Summary INTRODUCTION In F
Page 11 and 12: Section 1 Introduction
Page 13: SECTIONONE Introduction retail serv
Page 17 and 18: Section 2 Approach to Developing Wa
Page 19 and 20: SECTIONTWO Approach to Developing W
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Page 23 and 24: SECTIONTHREE Establishing Base - Ye
Page 49 and 50: Section 4 Water Demand Forecasting
Page 51 and 52: SECTIONFOUR Water Demand Forecastin
Page 57 and 58: Section 5 Water Demand Projections
Page 59 and 60: SECTIONFIVE Water Demand Projection
Page 61 and 62: SECTIONFIVE Water Demand Projection
Page 63 and 64: Section 6 References
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SECTIONSIX References Hayward, City
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Appendix A Description of SFPUC Who
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Appendix B Summary of Customer-Spec
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Wholesale Customer Estero MID/Foste
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Wholesale Customer Milpitas, City o
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Appendix B Summary of Customer-Spec
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Appendix C1 Alameda County Water Di
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66.0 64.0 62.0 60.0 58.0 56.0 54.0
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City of Brisbane Water Service Area
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Appendix C3 Burlingame, City of
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5.00 4.95 4.90 4.85 4.80 4.75 4.70
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Cal Water Bear Gulch Water Service
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Appendix C5 California Water Servic
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18.40 18.20 18.00 17.80 17.60 17.40
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Cal Water South San Francisco (SSF)
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Appendix C7 Coastside County Water
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4 3.8 3.6 3.4 3.2 3 2.8 2.6 2.4 2.2
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City of Daly City Water Service Are
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Appendix C9 East Palo Alto, City of
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5.0 4.5 4.0 3.5 3.0 2.5 2.0 City of
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Estero Municipal Improvement Distri
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Appendix C11 Guadalupe Valley Munic
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1.2 1.0 0.8 0.6 0.4 0.2 0.0 Guadalu
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Base Year Average Use and Indoor Pe
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Appendix C13 Hillsborough, Town of
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4.00 3.90 3.80 3.70 3.60 3.50 Town
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Los Trancos Woods Northern, Blue Oa
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Appendix C15 Menlo Park, City of
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5.2 5.0 4.8 4.6 4.4 4.2 4.0 3.8 3.6
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Mid Peninsula (Belmont) Water Servi
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Appendix C17 Millbrae, City of
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3.7 3.65 3.6 3.55 3.5 3.45 3.4 3.35
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City of Milpitas Water Service Area
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Appendix C19 Mountain View, City of
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15 14.9 14.8 14.7 14.6 14.5 14.4 14
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North Coast County WD Water Service
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Appendix C21 Palo Alto, City of
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15.5 15.0 14.5 14.0 13.5 City of Pa
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Purissima Hills Water District Serv
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Appendix C23 Redwood City, City of
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14.5 14.0 13.5 13.0 12.5 12.0 11.5
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City of San Bruno Water Service Are
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Appendix C25 San Jose, City of (por
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7 6.9 6.8 6.7 6.6 6.5 6.4 6.3 6.2 6
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City of Santa Clara Water Service A
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Appendix C27 Skyline County Water D
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0.35 0.30 0.25 0.20 0.15 Skyline Co
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Stanford University Water Service A
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Appendix C29 Sunnyvale, City of
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28.0 27.0 26.0 25.0 24.0 23.0 City
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Westborough County Water District S
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Appendix D Summary of SFPUC Wholesa
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