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GDoSYNMX CoNSMrattrs Dr. Hari Sharma, P.B., G.E. 22 January 2001 Page 5 histories that fill the envelope between the median and 84!'.percelitile response spectra for the design Event. GeoSyntec developed median: and 840' percentile acceleration response spectra for both the M. 6.4 MPE and 'M,a 6.7 MCE events on.: the Great- Valley blind thrust system and the MPENCE M, 7.9 event on the Saar Andreas fault system using the Abrahamson and Silva [1997] . aum"tion model. These acceleration response spectra, referred to herein as the '`target spectra," are shown in Figure 2 for the M" 6.7 MCE event on the Great Valley blind thnrst system, in Figure 3 for the. U, 6.4 NTE event on the Great Valley blind thrust system, and in Figure 4 for the M,,„ 7.9 N2FJMMGE event on the San Andreas fault system.. Based • . the above outlined y. • ti v i Yi m:W .v -C -t.,.. designfollowing four accelerograms for considerations at th' Forward Landfill the 270-4gree component of the Sam-foga-AlOba Avenue recorf f aa1 the M, 6.9 Lama Prieta earthquake; • the 315 -degree component of the Santa Teresa Hills record from the M., 6.9 Loma Prieta earthquake; the 360=degree component of the C urrAtos-Eureka Canyon' load record from the M, 6.9 Loma Prieta earthquake; and the Magnitude r synthetic aceel=Vam generated by Seed.. and Idriss [1969] to simulate a distant larg(,,ma;rzitude event on the San Andreas fault. The Sasatog _Aloha Avenue, Santa , Teresa MIS, and COMditos-Eureka Canyon Road records. ftn the M,6.9 Loma Prieta. earthquake were selected to represent ' the M„ 6.4 MPE and Mw 6.7 MCE events on the Great Valley blind thrust system. To compensate for a slight duration deficiency in both the MPE and, MCE and P, IPJ /21CAwpWMGs111- wctiFaRWd)tDIFOR-HAZ.DOc AIM S"d 902L-109-019 2UTJe9ut2u3 stmal WOF:E:S aloe 91 ReW GT/qA S-1IkIT: nggt4, nTmmn-ih ZELKBE606 EO:ZT 100Z/1E/L0