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27 <br /> 1 Slide#5 <br /> Our Expanded Quarry Reservoir and Jordan Lake Meet our Long-Term Water <br /> Supply Needs and Address Drought Vulnerability <br /> 20 <br /> Jordan Lake Allocation Included <br /> 78 <br /> 16 <br /> Water <br /> m <br /> E 14 Expanded Quarry Reservoir <br /> D <br /> supply <br /> • v 12 <br /> E Yield Ld Also has Uncertainty <br /> i 10 ♦� <br /> Yield 8 ♦♦� ♦�N♦►♦ • <br /> ♦� Demands ♦♦�M♦NM♦♦ Baseline,tst and 99th <br /> 3 6 ♦♦N Percentile Projections <br /> ♦♦N <br /> OC 4 <br /> 2 <br /> 0 — <br /> 1980 1990 2000 2010 2020 2030 2040 2050 2060 2070 <br /> FiscalYear <br /> O WASA's Water Supply Yreld and Demands-The estimated yield that includes our allocation of water from <br /> Jordan Lake is oversimplified as our access through the Western Intake Partners has notyet been modeled <br /> with our three local supplies. The projections shown in the figure are from 2019.In addition,there is <br /> uncertainty in the yield which is more drifrcult to quantify Shan the demand projectrons. <br /> 2 <br /> 3 Toddy Taylor said projections showed that current reservoirs plus quarry expansion would <br /> 4 provide water supply decades into the future before requiring regular Jordan Lake use. <br /> 5 Commissioner Bedford asked about quarry transition timing. <br /> 6 Todd Taylor explained mining would cease in 2030, and the following five years will be <br /> 7 spent connecting pits and filling them with water. He said that some capacity will be temporarily <br /> 8 offline during this period. <br /> 9 Commissioner Bedford asked if the 575 days of supply is the current capacity or future. <br /> 10 Todd Taylor said that it represents the current capacity of the quarry. <br /> 11 <br /> 12 Slide#6 <br /> Jones Ferry <br /> Road <br /> Hit MICRO-III, <br /> Water <br /> Treatment <br /> Pitant <br /> Peak Day <br /> .��_.r�r_ �• �) <br /> _.. � ��rit�nlrrrlrr� <br /> wgE1. - <br /> THE DRINKING WATER SYSTEM <br /> Capacity is <br /> 20 Million <br /> Gallons <br /> • - t Reservoir Mining cladilcation Filtration Disinfectiun St—ge�Customer <br /> . T T <br /> Supply Treatment Distribution <br /> 13 <br />