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6.G. - Page 148 of 238 <br />Location of Meters/Gauges <br />The SFPUC presently maintains meters and gauges that have been used to determine the <br />proportionate usage of the Regional Water System, in accordance with the methods and <br />calculations described in Exhibit J to the 1984 contract between San Francisco and the <br />Wholesale Customers. These meters consist of "County -Line Meters," "In -City Terminal <br />Reservoir Meters" and "System Input and In-line Meters" as described in the following <br />subsections. As new capital improvement projects are designed and constructed by the SFPUC, <br />it may be necessary for new meters to be installed to ensure continued accurate determinations of <br />the proportionate usage of the Regional Water System. "Planned meters" are included in the <br />following subsections where planned, capital improvement projects are likely to require the <br />installation of additional meters. <br />a. County -line Meters <br />The SFPUC presently maintains meters at or near the San Mateo -San Francisco County <br />line to measure flow through all transmission pipelines entering the City ("County -line Meters"). <br />The existing and planned County -line Meters are listed in Table 2 and shown on Figures 1 and 2. <br />Additional details pertaining to the County -line meters located at the Lake Merced Pump Station, <br />and specifically to water deliveries from the pump station to Sunset Reservoir, Sutro Reservoir, <br />and Lake Merced are provided below. <br />(1) County -Line deliveries to Sunset and Sutro Reservoirs <br />Water delivered to the City through the Sunset Supply Pipeline may be pumped from <br />the Lake Merced Pump Station to either Sunset Reservoir or Sutro Reservoir located <br />within the City. When water is pumped from the Lake Merced Pump Station to both <br />Sunset and Sutro reservoirs simultaneously, the recording instrumentation on the <br />Sunset and Sutro venturi meters are designed to record flows through both meters. <br />When water is pumped to Sutro Reservoir only (typically utilizing Pump No. 4 at the <br />March 11, 2009 <br />479 <br />