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City of Pleasanton 4.0 Water Agency Background
<br />Final Water Supply Assessment
<br />Stoneridge Drive Specific Plan Amendment and Staples Ranch Project
<br />Table 5-4: Zone 7 Multiple Dry Year Water Supply (AFA)
<br /> 2005-2012 2013-2030
<br />Water Supply Source Year 1 Year 2 Year 3 Year 1 Year 2 Year 3
<br />State Water Pro~ect° 66,280 8,060 69,420 66,280 8,060 69,420
<br />SWP Car over Su I b 10,000 10,000 0 10,000 10,000 0
<br />STWSD Pum back 0 8,680 8,150 0 8,680 15,480
<br />Cawelo Pum back° 0 10,000 0
<br />Arro o del Valle Watershed 380 290 4,250 380 290 4,290
<br />Groundwater Main Basin 17,000 33,400 17,000 17,000 30,730 17,000
<br />B ron Bethan Irri ation District 2,000 2,000 2,000 2,000 2,000 2,000
<br />Su I Total 95,660 82,430 100,820 95,660 69,760 108,190
<br />Notes:
<br />a. SWP supplies calculated by DWR with DWRSIM modeling and compared to CALSIM II estimates in the 2002 SWP Delivery Reliability Report.
<br />b. SWP Carryover Supply is surplus Zone 7 water stored in DWR facilities in wet or normal 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 Mana ement Plan, ada ted b PBSBJ/EIP Se tember 2007.
<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 /> Year
<br /> 2002 2003 2004 2005 2008 Total
<br />Ci of Pleasanton 14,744 14,367 15,614 14,553 14,911 74,190
<br />Source: Zone 7 Water A enc 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).24 Table 5-6 shows Pleasanton's sources of water.
<br />The treated water supply agreement provides that Zone 7 shall furnish and supply treated water
<br />supplies to Pleasanton and in return Pleasanton agrees to purchase and accept the water supply
<br />consistent with the provisions within the contract.25 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 less than the current year of supply.26 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.
<br />P:1Prajecls - WP OnryW1162.01 Staples Ranch WSA~FinaOFinal WSA.doc 5-17
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