complete drainage report rev 9

POA-1 2024-05-12 HydroCad - Proposed POA 1B-1 NOAA 24-hr D 10-Year Rainfall=5.22" Prepared by Anderson Consulting Services HydroCAD® 10.20-5c s/n 06666 © 2023 HydroCAD Software Solutions LLC Printed 10/25/2024 Page 59 Summary for Subcatchment 22S: Basin 6 - Imp Runoff = 6.99 cfs @ 12.11 hrs, Volume= Routed to Pond 24P : Basin 6 23,610 cf, Depth= 4.98" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs NOAA 24-hr D 10-Year Rainfall=5.22" * * Area (sf) 16,127 21,053 4,437 15,241 56,858 56,858 CN 98 98 98 98 98 Description Paved parking, HSG D Paved parking, HSG C impervious non pavement fire lane pervoius pavers Weighted Average 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 0.6 40 0.0200 1.19 Sheet Flow, Sheet Flow (A-B) Smooth surfaces n= 0.011 P2= 3.47" 3.0 450 2.50 Direct Entry, Pipe Flow (B-C) 3.6 490 Total Sheet Flow (A-B) Pipe Flow (B-C) Subcatchment 22S: Basin 6 - Imp