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Table 5-4: Zone 7 Multiple Dry Year Water Supply (AFA)
<br />Water Supply Source
<br />2006- 2012
<br />2013 -2030
<br />Year 1
<br />Year 2
<br />Year 3
<br />Year 1
<br />Year 2
<br />Year 3
<br />State Water Project'
<br />66,280
<br />8,060
<br />69,420
<br />66,280
<br />8,060
<br />69,420
<br />SWP Carryover Supply
<br />10,000
<br />10,000
<br />0
<br />10,000
<br />10,000
<br />0
<br />STWSD Pumpback
<br />0
<br />8,680
<br />8,150
<br />0
<br />8,680
<br />10,000
<br />15,480
<br />0
<br />Cawelo Pumpbadkc
<br />0
<br />Arroyo del Valle Watershed
<br />380
<br />290
<br />4,250
<br />380
<br />290
<br />4,290
<br />Groundwater (Main Basin)
<br />17,000
<br />33,400
<br />17,000
<br />17,000
<br />30,730
<br />17,000
<br />Byron Bethany Irrigation District
<br />2,000
<br />2,000
<br />2,000
<br />2,000
<br />2,000
<br />2,000
<br />Supply Total
<br />95,660
<br />62,430
<br />100,820
<br />95,660
<br />69,760
<br />108,190
<br />Notes:
<br />a. SWP supplies calculated by DWR with DWRSIM modeling and compered to CALSIM II estimates in the 2002 SWP Delivery Reliability Report
<br />b. SWP Csnyover Supply is surplus Zone 7 water stored in DWR facilities in wet or nomad years can be utilized to meet demands in dry years.
<br />c. Cawelo Pumpback supply available after 2013.
<br />Source: 2005 Zone 7 Urban Water Management Plan, adapted by PBS&JIEIP September 2007.
<br />City of Pleasanton
<br />Final Water Supply Assessment
<br />Stoneridge Drive Specific Plan Amendment and Staples Ranch Project
<br />4.0 Water Agency Background
<br />5.6 City of Pleasanton Water Supply
<br />The City of Pleasanton has an Interim Municipal and Industrial Treated Water Supply agreement for
<br />purchasing treated water supplies from Zone 7. The other three retail water agencies have similar
<br />agreements with Zone 7, with many of the basic terms and conditions being identical. Table 5 -5
<br />shows Zone 7's historical supply of treated water to the City of Pleasanton. The total valley -wide
<br />treated water supplied to all four retail water agencies by Zone 7 is now over 45,000 acre -feet per
<br />year or about 40 million gallons per day.
<br />Table 5-5: Zone 7 Historical Deliveries to City of Pleasanton 2002 -2006 (AFA)
<br />City of Pleasanton
<br />Year
<br />2002
<br />14,744
<br />2003
<br />14,367
<br />2004
<br />15,614
<br />2006
<br />14,553
<br />2006
<br />14,911
<br />Total
<br />74,190
<br />Source: Zone 7 Water Agency Retail Deliveries 2002 -2006.
<br />The City of Pleasanton is Zone 7's major customer. In a typical year, Zone 7 supplies approximately
<br />80 percent of Pleasanton's water. The remaining 20 percent is obtained from groundwater pumping
<br />at City operated wells. Pleasanton's annual groundwater pumping quota allotment is 3,500 acre -feet
<br />per year (which it normally pumps every year)." Table 5-6 shows Pleasanton's sources of water.
<br />The treated water supply agreement provides that Zone 7 shall fumish and supply treated water
<br />supplies to Pleasanton and in retum Pleasanton agrees to purchase and accept the water supply
<br />consistent with the provisions within the contract." Pleasanton, (nor any of the other three water
<br />retail agencies within the valley), does not possess, within its contract agreement with Zone 7, any
<br />"entitlement" to a firm water supply. The contract states, Zone 7 will deliver all of the water
<br />requested by Pleasanton, as submitted annually within the water supply schedule for the next
<br />succeeding calendar year in an amount not Tess than the current year of supply. In other words,
<br />24 2002 City of Pleasanton Urban Water Management Plan, Annual projections through 2030.
<br />25 2002 City of Pleasanton Urban Water Management Plan, page 4-11.
<br />26 2002 City of Pleasanton Urban Water Management Plan, page 4-11.
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<br />5 -17
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