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City of Pleasanton 6.0 Supply Demand Comparison
<br />Final Water Supply Assessment
<br />Stoneridge Drive Specific Plan Amendment and Staples Ranch Project
<br />Table 7-4: Zone 7 Projected Average Year Supply and Demand (AFA)
<br /> Pro acted Demands
<br />Treated Water Purchasers 2005 2010 2015 2020 2025 2030
<br />Ci of Livermore 7,470 7,620 9,400 9,900 10,200 10,200
<br />Ci of Pleasanton 15,670 18,320a 21,800a 22,700a 23,400a 23,400a
<br />CWSC 8,470 10,320 12,600 13,200 13,650 13,700
<br />DSRSD 11,760 12,820 12,100 12,900 13,250 13,320
<br />Other Customers 280 290 340 410 460 500
<br />Total of Potable Water Sales 43,650 49,370 56,240 59,110 60,960 61,120
<br />A ricultural 3,900 8,250 8,250 8,250 8,250 8,250
<br />Total Water Salesb 47,550 57,620 64,490 67,360 69,210 69,370
<br />2007 Sustainable Su I ` 88,400° 87,500 87,500 87,500 87,500 87,500
<br />Potential Su I Sur lus° ~ 29,880 23,010 20,140 18,290 18,130
<br />O erational Demands
<br />Artificial rechar a of Main Basinf 9,000 15,000 20,000 20,000 25,000 30,000
<br />Sur lus water to STWSDg 5,166 5,000 5,000 5,000 5,000 5,000
<br />O erational Demand Totals 14,166 20,000 25,000 25,000 30,000 35,000
<br />Total Demandsh 61,716 77,620 89,490 92,360 99,210 104,370
<br />Total Available Su I ~ 100 500 100,500 100,500 100,500 100,500 105,500
<br />Sur lus -39,000 23,400 -11,000 -7,600 -1,500 -1,500
<br />Notes:
<br />a. InGudes proposed project demands
<br />b. Potable and Untreated Water Sales.
<br />c. Zone 7 Water Agency Annual Review Of The Sustainable Water Supply, May 16, 2007.
<br />d: From 2005 Annual Review Of The Sustainable Water Supply, July Update, July 2005.
<br />e: Potential surplus available to meet Zone 7 Operational Demands
<br />f. Estimated imported water used to offset Zone 7 groundwater extractions from the Main Basin assuming that groundwater pumping averages 15,000 -
<br />20,000 AFA. Recharge could be as high as 30,000 AFA in 2030.
<br />g. Estimated surplus imported water conveyed to Semitropic Water Storage District for Out-of-Basin groundwater banking.
<br />h. Projected sum of all water demands for Zone 7 Water Agency -this is the sum of Total Water Sales and Operational Demands..
<br />i. Total Available Supply is estimated at 100,500 - 105,000 AFA depending on Zone 7 groundwater extractions -see Table 5-2 Zone 7 Supply Sources.
<br />Source: PBS&J, October 2007 ads ed from Zone 7 Water A enc Urban Water Mana ement Plan, Table S: Water Demand Purohase Pro'ections, a e 35.
<br />available to meet both retail and operational demands in all years. In years of above average
<br />rainfall, Zone 7 could possibly store more water throughout its storage system effectively building up
<br />more supplies for dry or multiple dry years.
<br />7.2 Local Water Supply Sufficiency -City of Pleasanton
<br />Table 7-5 compares the City's projected supply and demand over atwenty-five year planning
<br />horizon out to 2030. As shown in Table 7-5, the City can satisfy all customer demands in each year.
<br />In fact, in certain years, the City could expect to have surplus supplies because actual treated water
<br />deliveries from Zone 7 are less that annual requested delivery amounts; consequently, surplus
<br />supplies would be used as additional supplies for Zone 7's drought prevention storage options.
<br />36 2005 Zone 7 Water Agency, Urban Water Management Plan, page 33.
<br />PiProjecffi - WP Onty111182.01 Staples Ranch WSAtFinallFinal WSAdoc 7-3
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