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LLNL Emergency Plan Rev-23 October 2017 21 Staffing at ACFD Station 21 allows a standard two-flank attack. LLNL firefighters have a history of aggressive wildland fire attack at Site 300. Wildland fires beyond the capabilities of this initial fire attack are usually held in check by the prescribed burn boundaries; however, due to the topography and remote nature of Site 300, additional ACFD equipment and personnel are automatically dispatched by Alameda County Regional Emergency Communications Center (ACRECC) as part of LLNL's planned initial response to a wildland fire at Site 300. Through LLNL’s Mutual Threat Zone Memorandum of Understanding (MOU) with California Division of Forestry and Fire Protection (CAL FIRE), this may include specialized resources such as firefighting helicopters and fixed-wing aircraft tankers. Flooding According to ES&H Manual Document 22.4, “Earthquakes,” flooding would not occur at LLNL from a failure of the Del Valle Reservoir dam, from loss of water from the Patterson Reservoir, or from a break in the South Bay Aqueduct near LLNL. However, flooding is still a possibility at LLNL due to storms. According to a recent U.S. Geological Survey report, scientists believe a megastorm occurs in California once every 165 to 400 years. Called “ARkStorms” by the U.S. Geological Survey, these megastorms are caused by a long band of sub-tropical moisture known as the “pineapple express” that sometimes stretches across the Pacific Ocean to the California Coast. These storms are estimated to produce precipitation that in many places exceeds levels only experienced on average once every 500 to 1,000 years. The last large ARkStorm to hit California occurred in December 1861 and lasted through January 1862, turning the Sacramento valley into an inland sea and causing the state capitol to be moved temporarily to San Francisco. Geologic studies of deposits offshore of California’s big rivers suggest that storms even bigger than 1861-62 have happened six times in the last 1800 years. Smaller ARkStorms caused significant damage in northern California in 1986 and 1997. The U.S. Geological Survey predicts that the next large ARkStorm to hit California will cause more damage than even a big earthquake on the San Andreas Fault. To help prepare for response to flooding events, LLNL participates in the ARkStorm flooding exercises conducted by the State of California’s Office of Emergency Management. 1.4.2.6 Transportation System Public Transportation Public transportation is available in the Livermore, CA area, including bus services in some areas of Alameda County, and an extensive rail infrastructure that provides a mix of services exists within the nine Bay Area counties. Bay Area Rapid Transit, commonly known as BART, provides commuter rail service to San Francisco, Contra Costa County, Alameda County, and San Mateo County. The Amtrak Thruway Bus Route 34 goes from Stockton to San Francisco through Livermore, with stops in Tracy, Livermore, and Dublin/Pleasanton.