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LLNL Emergency Plan <br />Rev-23 <br />October 2017 <br /> <br /> 23 <br />Site 200 Water Supply: Since 1960, the main water supply for LLNL has been purchased from <br />the City of San Francisco Hetch Hetchy Aqueduct system. An LLNL contract with the Alameda <br />County Flood and Water Conservation District, Zone 7, supplies water through the California <br />Water Service Company. <br />Site 300 Water Supply: A number of wells and storage tanks are located across Site 300. These <br />storage tanks range in capacity from 63,000 to 165,000 gallons. <br />Site 200 Natural Gas Supply: Purchased from PG&E, natural gas is supplied and is distributed <br />via an underground grid system. <br />Details on the geography, topography, demography, meteorology, natural phenomena, <br />transportation systems, and utilities can be found in the Environmental Impact <br />Statement/Environmental Impact Report for the Livermore site, the Environmental Report <br />(current version) or the safety analysis reports. <br />