Stormwater Management Report Revised as of 01282026 4936 0314 8685 v2

~►S~E AMERICAN SOCIETY OF CML ENGINEERS Seismic Site Soil Class: C -Very Dense Soil and Soft Rock Results: PGA M 0.17 T~ 6 S MS 0.27 Ss : 0.27 SM1 0.064 S, 0.05 S DS 0.18 US30 530 SD1 0.043 Seismic Design Category: B 0 iii Multi-Period MCER Spectrum 0.35 Multi-Period Design Spectrum 4 a5 0.3fl D ~0 D 35 .'- 025 031 42a 0 2~ ~ 0.2U +~ 0 15 • O i , ~'~ o to ~; n ,_ 0 05 { i O i~=: J • ~ t a 1~:...__.... . a tD o s Sa (g) vs T(s) A Sa(g)vs T(s) +3.30 Two-Period MCE R Spectrum o is Two-Period Design Spectrum 0 S5 n2 D i~ D t2 0.10

D i~ D t2 0.10 0.08 o.as O Dd 6.02 O—:Y------- 4 5 F_. 7 n Sa(g) vs T(s) Sa(g) vs T(s) MCER Vertical Response Spectrum Design Vertical Response Spectrum Vertical ground motion data has not yet been made Vertical ground motion data has not yet been made available by USGS. available by USGS. https://ascehazardtool.orq/ Page 2 of 4 Tue Aug 27 2024