14 ATTACHMENT 1 EXHIBIT C - Laserfiche WebLink

Water Shortage Contingency Plan THE CITY OF PLEASANTON. Planned water supply sources and quantities will be described and be reasonably consistent with the supply projections in Chapter 6 (Water Supply Characterization) of the City's most recent UWMP. Should supply sources and projections differ significantly between the AWSDA and the UWMP, an explanation for the difference will be provided. Planned unconstrained water demands will be used as input to the AWSDA for the current year and the following one dry year. Unconstrained water demands are customer demands where no water conservation measures are in effect. In planning for water demands, the following factors are considered, as applicable and appropriate: 1. Weather conditions 2. Water year type 3. Population changes (e.g., due to development projects) 4. Demand trends and anticipated new demands (e.g., changes to land use) 5. Pending policy changes that may impact demands 6. Infrastructure operations Planned water demand types and quantities will be described and should be reasonably consistent with the demand projections in Chapter 4 (Water Use Characterization) of the City's most recent UWMP. Should the demand projections deviate significantly between the AWSDA and the UWMP, an explanation for the difference will be provided. 2.3 Assessment Methodology In preparing the AWSDA, the City will use the following assessment methodology and criteria to evaluate the agency's water supply reliability for the current year and following one dry year. The City uses a spreadsheet to plan for current year and future year supply and demands. Planned supply and demand inputs described in Section 2.2 will be entered in the spreadsheet in annual increments. As needed, the increments may be revised to monthly or seasonal periods to more closely evaluate specific conditions and needs. Supply and demand will be compared to determine the City's water supply reliability in the current year and the following one dry year. The City's water supply will be deemed reliable if it can meet planned water demands in both the current year and the following dry year. If water supply cannot meet planned water demands in the current year or the following dry year, the extent of the water shortage condition will be determined, and the City will prepare response actions in accordance with this WSCP. 3.0 SIX STANDARD WATER SHORTAGE LEVELS To provide a consistent regional and statewide approach for conveying the relative severity of water supply shortage conditions, the 2018 Water Conservation Legislation mandates that water suppliers plan for six standard water shortage levels that correspond to progressive reductions of up to 10, 20, 30, 40, 50 percent, and greater than 50 percent from the normal reliability condition. Each shortage condition should correspond to additional actions water suppliers would implement to meet the severity of the impending shortages. City of Pleasanton N-e80-60-20-04-wP-R-e80-2020uwMP Last Revised: 05-05-21