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LLNL Emergency Plan <br /> Rev-23 <br /> October 2017 <br /> The Livermore valley is bounded in part by active faults (Figure 1.2). The Greenville Fault zone <br /> bounds the Livermore valley on the northeast. The northeast-trending Las Positas Fault zone <br /> forms the boundary of the southeast corner of the valley. The Mount Diablo Fold and Thrust <br /> Belt, north and west of the site, includes the Williams and Verona faults southwest of Livermore <br /> valley and the Livermore and Springtown structures in the immediate vicinity of the LLNL site. <br /> The San Andreas Fault system includes the faults listed as well as others along western <br /> California. In Figure 1.2, the teeth indicate dip direction of thrust and reverse faults. The Mount <br /> Diablo Fold and Thrust Belt and the Livermore Fault are blind faults; traces shown represent the <br /> buried upper tips of these faults. <br /> 122 OUN 12!N N <br /> B C-TN _,. i 38 DUN <br /> � r <br /> �r <br /> LLNL <br /> 3d 3 N }fie, 3 37 XN <br /> I �o <br /> Z;, <br /> 122 DUN 129 21]N <br /> Figure 1.2 Active and Potentially Active Faults in the Vicinity of Site 200 <br /> The earthquake faults of greatest threat to LLNL's Site 200 and Site 300 are the Calaveras and <br /> Greenville faults, which are both estimated to be capable of producing earthquakes in the <br /> magnitude 6.5 to 7 range (i.e., similar to the size of the 1989 Loma Prieta earthquake). These two <br /> faults make the greatest contribution to the seismic hazard at Site 200,particularly at frequencies <br /> 19 <br />