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<br />4 identifies the type of meter and associated metering equipment for the County-line Meters and <br />Terminal Reservoirs. Table 5 identifies the meter calibration and maintenance frequency for the <br />meters and equipment listed in Table 4. <br /> <br />SECTION A. WATER METERS <br /> <br />.. 1. General <br /> <br />The Agreemen.t provides that certain operating and maintenance expenses and the capital <br /> <br />cost of certain categories ofutilit~ plant in service are to be allocated between San Francisco and <br />, . I <br />the Wholesale Customers on the basis of proportionate annual usage of the Regional Water' <br />I . <br />System. The purpose of this Attachment is to describe the metersjand illustrate the method by <br /> <br />which proport:ionate annual usage wi II be calculated. . <br /> <br />2. Units of Measurement, Rounding, Conversion <br /> <br />The SFPUC will compile the usage data requir~d to complete Table 1 annually...The. <br />. unit.s of measurement an&conventions f6~ converting androu!lding will be as follows. <br /> <br />. , <br /> <br />. The data in the Table 1 will be presented, and the calculations contemplated by this ' <br />Attachment shown, in units of millions of gallons per day (mgd), rounded toth~ nearest tenth of <br />an mgd: 'Percentages (e.g., the City and Wholesale usa~e rates) shall be carried to two digits to <br />.the right of the decimal point and reduction factors shall be carried to 'four digit~ to the right of <br /> <br />. , <br /> <br />the decimal point. Data compiled by the SFPUC in units of hundreds of cubic feet per year (cd) <br />shall be converted to mgd by multiplying hundreds of cubic. feet perye(;lr by 0.0000020493 (or <br />2.0493 x 10-6) for non-leap years and 0.0000020437 (or 2.0437 x 10-6) for leap years, <br /> <br />In rounding, if the rightmost digit ~ropped is 0 through 4, the preceding digit shall.be left <br /> <br />- , <br /> <br />u~changed; if the rightmost digit dropped is 5 through 9, the preceding digit shall be iilcreased <br />. by L <br /> <br />2 <br /> <br />March I 1, 2009 <br />