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6.3B <br /> Page 11 <br /> SECTION 2. ALtOCATION OF WATER AMONG WHOLESALE CUSTOMERS <br /> Section 2.1 Annual Allocations Among the Wholesale Customers. The annual water � <br /> supply allocated by the SFPUC to the Wholesale Customers collectively during system- '� <br /> wide shortages of 20 percent or less shall be apportioned among them based on tlle <br /> methodology described in this Section. <br /> Section 2.2 Methodolog,v for Allocating Water Among Wholesale Custorners. The <br /> water made available to the Wholesale Customers collectively will be allocated among <br /> them in proportion to each Wholesale Customer's Allocation Factor, adjusted as <br /> described in the following subsections below. The Wholesale Customer Allocation <br /> Factors will only be calculated at fihe onset of a drought and will remain the same until <br /> such time as the SFPUC declares the shortage condition over. The Wholesale Customer <br /> Allocation Factors will be recalculated during subsequent shortage periods for use <br /> during those specific periods. <br /> Section 2.2.1 Step One: Defiermination of Base/Seasonal Purchase Cutback For Each <br /> Wholesale Customer. The first step requires calculating the Wholesale Customer's <br /> Base/Seasonal Purchase Cutback. This calculation has seven parts. An example of <br /> Steps 1b-1f is presented in Table 2. Step 1g is shown in columns 3-6 in Table 3. For <br /> steps lb-lg, the calculation uses average monthly production values for the three years <br /> preceding the drought for all potable supply sources, expressed as a monthly value in <br /> hundred cubic feet: <br /> - Step 1a: Each agency's total annual purchases from the SFPUC will be compared <br /> to its Individual Supply Guarantee (ISG), with any annual purchases above its <br /> ISG subtracted from that agency's total annual SFPUC purchases by subtracting <br /> the amount on a monthly basis in proportion to the agency's monthly SFPUC <br /> purchase pattern, <br /> - Step 1b: Calculate Average Monthly and Total Production for the three fiscal <br /> years immediately preceding the drought, excluding years during which <br /> shortage allocations were in effect, based on rnonthly production data fxom the <br /> SFPUC and Wholesale Customers, <br /> - Step 1c: Calculate Base Component which is equal to the Average Monthly <br /> Production during the base months of December, January, February and March, <br /> multiplied by 12, <br /> - Step ld: Calculate Seasonal Component as the difference between Total <br /> Production and Base Component, <br /> - Step 1e: Calculate an agency's Base/Seasonal Allocation , expressed in hundred <br /> cubic feet, by multiplying the Base Component by one minus the Base Reduction <br /> Percentage, or 90%, and the Seasonal Component by the percentage needed <br /> (Seasonal Reduction Percentage) to achieve the required Overall Average <br /> Wholesale Customer Reduction, which is expressed as a percentage, <br /> -2- Zs600�.i <br />