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THE CITY OF
<br />Chapter 7
<br />Water Service Reliability and Drought Risk Assessment PLEASANTON.
<br />7.1.3.3 Water Service Reliability - Five Consecutive Dry Years
<br />In Chapter 7 of its 2020 UWMP, Zone 7 has indicated it can meet retailer demands during five-year
<br />droughts beginning in 2025, 2030, 2035, 2040 and 2045. Therefore, Zone 7 supplies to the City are
<br />assumed to equal the City's projected potable water demands after accounting for the City's GPQ, which
<br />is expected to remain at 3,500 AFY in each year of a five-year drought. Recycled water supplies are also
<br />assumed to be unaffected by dry conditions.
<br />Table 7-6 shows that the City's supplies are adequate to meet projected demands during five-year
<br />droughts through the planning period. For interim years (e.g., 2021-2024, 2026-2029), potable and
<br />recycled water demands are linearly interpolated between the values shown in Table 7-5.
<br />Table 7-6. Multiple Dry Years Supply and Demand Comparison (DWR Table 7-4 Retail)
<br />*Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Table 2-3.
<br />NOTES: Volumes are in AF and include both recycled and potable water.
<br />WEST YOST 7-10 City of Pleasanton
<br />2020 Urban Water Management Plan
<br />May 2021
<br />2045*
<br />2025*
<br />I 2030*
<br />I 2035*
<br />I 2040*
<br />I
<br />(Opt)
<br />(Supply totals
<br />18,240
<br />18,889
<br />19,387
<br />20,036
<br />20,036
<br />First year
<br />(Demand totals
<br />18,240
<br />18,889
<br />19,387
<br />20,036
<br />20,036
<br />Difference
<br />0
<br />I 0
<br />I 0
<br />I 0
<br />I 0
<br />Supply totals
<br />18,370
<br />18,988
<br />19,517
<br />20,036
<br />20,036
<br />Second year
<br />(Demand totals
<br />18,370
<br />18,988
<br />19,517
<br />20,036
<br />20,036
<br />Difference
<br />0
<br />I 0
<br />+
<br />I 0
<br />I 0
<br />+
<br />I 0
<br />Supply totals
<br />18,499
<br />19,088
<br />19,647
<br />20,036
<br />20,036
<br />Third year
<br />(Demand totals
<br />18,499
<br />19,088
<br />19,647
<br />20,036
<br />20,036
<br />Difference
<br />0
<br />I 0
<br />I 0
<br />I 0
<br />I 0
<br />Supply totals
<br />18,629
<br />19,188
<br />19,776
<br />20,036
<br />20,036
<br />Fourth year
<br />(Demand totals
<br />18,629
<br />19,188
<br />19,776
<br />20,036
<br />20,036
<br />Difference
<br />0
<br />I 0
<br />I 0
<br />0
<br />0
<br />Supply totals
<br />18,759
<br />19,287
<br />19,906
<br />20,036
<br />20,036
<br />Fifth year
<br />(Demand totals
<br />18,759
<br />19,287
<br />19,906
<br />20,036
<br />20,036
<br />(Difference
<br />0
<br />I 0
<br />I 0
<br />I 0
<br />I 0
<br />*Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Table 2-3.
<br />NOTES: Volumes are in AF and include both recycled and potable water.
<br />WEST YOST 7-10 City of Pleasanton
<br />2020 Urban Water Management Plan
<br />May 2021
<br />
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