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Table 1 Summary of Fault Parameters Corral Hollow Landfill San Joaquin Count , CA Distance Fault Fault/Fault From Slip Rate Fault Dip Maximum Zone Name k 4 e (mm/yr)2 Length ng h (degrees) Sense of Slip Magnitudel,2 Greenville 15 2.0 50 90 Strike-Slip 7.0 Calaveras 37 6.0 123 90 Strike-Slip 7.0 Hayward 45 9.0 150 90 Strike-Slip 7.3 San Andreas 75 17.0 472 90 Strike-Slip 8.1 San Gregorio 90 5.5 176 90 Strike-Slip 7.5 Orti alita 50 1.0 70 90 Strike-Slip 7.1 Green Valley 53 4.7 56 90 Strike-Slip 6.8 Coast Range Central Valley 1.2 1.5 45 15 Thrust 6.9 GV7 3 Note(s): 'Maximum Magnitude was obtained from the USGS 2008 National Seismic Hazard Maps—Fault Parameters web site. 2Fault Length,Slip Rate,dip,and Maximum Magnitude are based on the specific fault section in proximity to the project site. 3Corral Hollow Landfill resides closest to the Great Valley fault,segment 7(GV7)which is one segment of the Coast Range Central Valley thrust fault system. 4Distance from Site is the measured distance to the fault trace obtained from map view As can be seen in table 1, all fault/fault zones in the vicinity of the site have a maximum magnitude less than the 7.5 M earthquake established by the EPMt output. However, the San Andreas fault has historically been modeled with a magnitude earthquake of 8.1 M consistent with a four segment rupture, so in order to stay consistent with industry practice ground motions will be established based on a magnitude 8.1 earthquake. All other ground motions will be based on the fault/fault zones producing their maximum magnitude earthquake, which will be greater than or equal to the 30% probability of occurrence in the next 100 years. It should be noted that these scenarios will create PGA values that are based on very conservative data. 3.0 Development of Peak Ground Acceleration Values ' To establish peak round accelerations PGA in rock at the Corral Hollow Landfill Next p g (PGA) Generation Attenuation (NGA) modeling based on the Campbell-Bozorgnia (2008) attenuation relationship was used. Input parameters for the model include magnitude of earthquake, distance to coseismic rupture, distance to surface projection of coseismic rupture, depth to top of N1CommerciaUcWe ProjectslSan Joaquin Coun44143515-2011-2012 ContradCorral Hollow LREngineednglSlope AnalysislSeismic InformationlCorral Hollow Seismic Wt#eUp.docx