DRAFT <br />ground-motion amplification or attenuation at each spectral period to develop a <br />recommended ground-surface response spectrum. Based on our review of available <br />geologic and subsurface information for the project area and the results of subsurface <br />explorations and in-situ geophysical testing completed for this project, it is our opinion <br />the site can generally be classified as Site Class D in accordance with Chapter 20 of ASCE <br />7-16. The recommended response spectra for structural design were developed by <br />comparing the site-specific spectra based on site-response modeling with the code-based <br />spectra based on Site Class D conditions. Table 5-1 below provides a summary of the <br />recommended multiperiod Risk-Targeted Maximum Considered Earthquake (MCER) <br />horizontal response spectrum developed for nonlinear response history analysis (RHA), <br />and additional details regarding the RHA are provided below and in Appendix C. The table <br />also includes a summary of the corresponding vertical response spectrum, which was <br />developed by applying published relationships of empirical vertical-to-horizontal <br />response spectra models to the horizontal multiperiod MCER response spectrum as <br />discussed in Appendix B. <br />Table 5-1: RECOMMENDED MCER RESPONSE SPECTRAL VALUES FOR RHA, 5% DAMPING <br />PGA <br />0.42 <br />0.23 <br />0.030 <br />0.46 <br />0.28 <br />0.050 <br />0.56 <br />0.39 <br />0.075 <br />0.72 <br />0.59 <br />0.100 <br />0 <br />200 <br />0.92 <br />0 <br />95 <br />0.71 <br />0 <br />60 <br />. <br />0.300 <br />0 <br />500 <br />. <br />0.95 <br />0 <br />92 <br />. <br />0.48 <br />0 <br />40 <br />. <br />0.750 <br />. <br />0.81 <br />. <br />0.35 <br />1.000 <br />0.63 <br />0.28 <br />1.500 <br />2 <br />000 <br />0.40 <br />0 <br />30 <br />0.20 <br />0 <br />16 <br />. <br />2.500 <br />. <br />0.24 <br />. <br />0.13 <br />3.000 <br />0.20 <br />0.11 <br />4.000 <br />0.15 <br />0.09 <br />5.000 <br />0.12 <br />0.07 <br />For dynamic analysis using the equivalent lateral force (ELF) design procedure, the MCER <br />and design acceleration parameters are developed in accordance with Section 21.4 of <br />GRI #6497-A - 2.MO Indoor Football Practice Facility Page 20 <br />August 26, 2021 <br />