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<br /> <br />ASSOCIATED SOILS ENGINEERING, INC. Project No.: 7160.23 <br />2860 Walnut Avenue, Signal Hill CA 90755 January 23, 2024 <br />Tel: (562) 426 -7990 * Fax: (562) 426 -1842 Page 7 <br />The 2022 CBC seismic design criteria for the Site based on a Site Class of “D”, determined based on the <br />inferred Vs30 value of 294 m/sec shown in Section 3.2 above and the criteria of Table 20.3-1 of ASCE 7-16 <br />(Reference 13), a Risk Category II and a scenario of Risk-Targeted Maximum Considered Earthquake (MCER) <br />that carries a 2% exceedance probability in 50 years had been determined utilizing the OSHPD Seismic <br />Design Maps web-application (http://seismicmaps.org) and the criteria stipulated in Chapters 11 and 12 of <br />Reference 5, including Supplements 1 and 3. Summaries of the seismic coefficients for the Site are <br />tabulated below. <br />2022 CBC SEISMIC DESIGN PARAMETERS <br />Site Latitude: N 33.7429 Site Longitude: W 117.8417 Risk Category a II <br />Seismic Parameter Recommended Value <br />Site Class b D <br />Soil Profile Name b Stiff Soil Profile <br />Site Coefficient, Fa c 1.0 <br />Site Coefficient, Fv d 1.842 <br />0.2-Second Spectral Response Acceleration, SS e 1.284g <br />1.0-Second Spectral Response Acceleration, S1 f 0.458g <br />Adjusted 0.2-Second Spectral Response Acceleration, SMS g 1.284g <br />Adjusted 1.0-Second Spectral Response Acceleration, SM1 h 0.844g <br />Design 0.2-Second Spectral Response Acceleration, SDS i 0.856g <br />Design 1.0-Second Spectral Response Acceleration, SD1 j 0.562g <br />Long -Period Transition Period, TL k 8 sec <br />Mapped MCEG Geometric Mean Peak Ground Acceleration, PGA l 0.538g <br />Site Coefficient, FPGA m 1.1 <br />MCEG Peak Ground Acceleration adjusted for Site Class Effect, PGAM n 0.592g <br />Risk Category I or II or III IV <br />Seismic Design Category based on S1 o N/A N/A <br />Seismic Design Category based on SDS p D D <br />Seismic Design Category based on SD1 q D D <br />a Per 2022 CBC Table 1604.5 h Per 2022 CBC Equation 16-21 <br />b Per 2022 CBC Section 1613.2.2 i Per 2022 CBC Equation 16-22 <br />c Per 2022 CBC Table 1613.2.3(1). Note: If simplified design procedure of j Per 2022 CBC Equation 16-23 <br /> Section 12.14 of ASCE 7-16 is adopted, the Fa value should be determined k Per ASCE 7-16 Figure 22-14 <br /> per Section 12.14.8.1 of ASCE 7-16 with no need for Fv, SMS, SM1 values. l Per ASCE 7-16 Figure 22-9 <br />d Per 2022 CBC Table 1613.2.3(2), provided Cs values are determined by m Per ASCE 7-16 Table 11.8-1 <br /> Equations 12.8-2, 12.8-3 and 12.8-4 of ASCE 7-16. n Per ASCE 7-16 Equation 11.8-1 = PGA x FPGA <br />e Per 2022 CBC Figure 1613.2.1(1) o Per 2022 CBC Section 1613.2.5 <br />f Per 2022 CBC Figure 1613.2.1(2) p Per 2022 CBC Table 1613.2.5(1) <br />g Per 2022 CBC Equation 16-20 q Per 2022 CBC Table 1613.2.5(2) <br /> <br />Please note, seismic design parameters for Site Classes “D”, “E”, and “F” should be obtained from site- <br />specific seismic hazard analysis unless exceptions stipulated in Section 11.4.8 of ASCE 7-16 are invoked. The <br />values listed in the table above reflect invocation of such exceptions (see Footnotes c and d beneath the <br />said table). Please note that, as S1 value is greater than 0.2, should exception per Item 1 in Section 11.4.8 of