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Table 6 -1: Zone 7 Historical Deliveries to Retailers 2002 -2006 (AFA)
<br />Year
<br />2002
<br />2003
<br />2004
<br />2006
<br />2006
<br />Total
<br />DSRSD
<br />8,728
<br />9,140
<br />10,978
<br />9,626
<br />9,825
<br />48,297
<br />33,431
<br />City of Livermore
<br />6,733
<br />6,394
<br />6,785
<br />6,625
<br />6,893
<br />City of Pleasanton
<br />14,744
<br />14,367
<br />15,614
<br />14,553
<br />14,911
<br />74,190
<br />CWSC
<br />7,971
<br />8,267
<br />8,994
<br />8,108
<br />8,784
<br />42,124
<br />Annual Totals
<br />38,176
<br />38,169
<br />42,371
<br />38,912
<br />40,414
<br />198,042
<br />Source: Zone 7 Water Agency Retail Deliveries 2002 -2006.
<br />City of Pleasanton
<br />Final Water Supply Assessment
<br />Stoneridge Drive Specific Plan Amendment and Staples Ranch Project
<br />5.0 Demands
<br />6.0 Demands
<br />Analysis of water demand, both historical and projected, is based on the same regional, local, and
<br />proposed project areas as the analysis for supplies. The regional demand analysis addresses the
<br />greater regional demand context of Zone 7's service area, which indudes SWP demands; the local
<br />demand analysis addresses the City of Pleasanton water system specifically, and the project
<br />specific analysis demand calculations are based on the most recent land -use map and information
<br />from the project proponent.
<br />6.1 Regional Demands
<br />The regional area includes all of Zone 7's service area and covers demands on groundwater in the
<br />Main Basin and imported surface water supplies.
<br />6.1.1 Regional Historical and Projected Demands
<br />As stated previously, Zone 7 is a water wholesaler and supplies treated water to retail water
<br />agencies for M&I use. Specifically, the primary retailers are DSRSD, which serves Dublin, portions
<br />of San Ramon and the Dougherty Valley development; the City of Pleasanton; the CWSC and the
<br />City of Livermore, which together provide water service to the City of Livermore. Zone 7 also serves
<br />untreated surface water directly to several agricultural customers and a few other users.
<br />Table 6 -1 shows the quantities of treated water supplied by Zone 7 to each of the retailers within the
<br />Livermore Amador Valley over the last five years. As stated in Section 5, these deliveries by Zone 7
<br />were consistent with each retailer's annual treated water purchase request.
<br />6.1.1.1. Regional Projected Demands
<br />Zone 7's UWMP estimates population growth in Livermore Amador Valley will plateau in 2025 at
<br />approximately 260,000 people and will remain stable (see Table 6 -2). Table 6 -3 shows the
<br />projected demands of each retailer served by Zone 7 over the next 25 years to 2030. According to
<br />contract provisions or other arrangements between Zone 7 and each municipality, each annual
<br />supply purchase request must be greater than the previous year's delivery. As demonstrated in
<br />Table 6 -3, treated water quantities increase from 49,370 AF in 2010 to 61,120 AF in 2030. As
<br />expected, total water demands (treated and untreated) will increase from 57,620 AF in 2010 to
<br />69,370 AF in 2030. That quantity for Pleasanton increases from 18,320 AF in 2010 to 23,400 AF or
<br />roughly 20mgd in 2030.
<br />27 2005 Zone 7 Water Agency, Urban Water Management Plan, page 12.
<br />28 2002 City of Pleasanton Urban Water Management Plan, page 4-11.
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<br />6 -1
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