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7.A. - Page 47 Attachment 6 <br /> Table 6 <br /> Existing Potable Water Storage Facilities <br /> Capacity <br /> Pressure Zone Storage Facility (million gallons) <br /> Easter Cross Easter Cross—1 Tank 0.10 <br /> Easter Bowl Easter Bowl—1 Tank 1.20 <br /> Glenloch Glenloch—1 Tank 0.09 <br /> Wilmington South Wilmington—1 Tank 0.25 <br /> Cambridge Cambridge—2 Tanks 0.65 <br /> Lakeview Lakeview—1 Reservoir 1.00 <br /> Main City Zone Sequoia—2 Tanks 5.00 <br /> Main City Zone Reservoir Carson—1 3.75 <br /> Redwood Shores Peninsula 1-1 Tank 3.20 <br /> Redwood Shores Peninsula 2-1 Tank 3.00 <br /> Total Domestic 21.24 <br /> Source: City of Redwood City-Public Works Division("A Technical Report on the City Water Storage Capability" <br /> and Redwood City Pressure Zone Map). <br /> In addition, the Enterprise has storage for 5.2 million gallons of recycled water at the <br /> SBSA site. <br /> Distribution System. The Enterprise currently contains approximately 266 miles of <br /> pipeline,in the following sizes: <br /> Table 7 <br /> Pipeline Sizes <br /> Size Miles <br /> 24 inches 4.35 <br /> 20 inches 1.83 <br /> 18 inches 1.53 <br /> 16 inches 12.19 <br /> 14 inches 0.21 <br /> 12 inches 33.10 <br /> 10 inches 7.80 <br /> S inches 100.60 <br /> 6 inches 78.31 <br /> 4 inches 14.19 <br /> 3 inches 0.02 <br /> 2 inches 11.87 <br /> Total: 266.00 <br /> Source:City of Redwood City-Public Works Division. <br /> Water Quality and Environmental Issues and Regulatory Requirements <br /> Monitoring of the imported Hetch Hetchy supply is conducted by the SFPUC. The <br /> SFPUC treats the Hetch Hetchy supply by lime addition at Rock River for corrosion control and <br /> ultraviolet light at Tesla Portal and chloramination at Sunol Vally for disinfection, as well as, <br /> fluoridation at Sunol Valley. Water that is delivered to Bay Area reservoirs receives filtration <br /> and disinfection treatment at either the Sunol or the Harry Tracy filtration plants. Filtered water <br /> from these treatment plants may be co-mingled with unfiltered Hetch Hetchy water in Bay Area <br /> transmission pipelines. Water is continuously monitored and tested by the SFPUC to ensure <br /> that water delivered to customers meets or exceeds federal and state drinking water and public <br /> health requirements. The SFPUC and its wholesale customer agencies were granted filtration <br /> -24- <br />