251203_42 ERW_Stormwater Report

251202_42 ERW Waystone - Future Rainfall Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Area Listing (selected nodes) Area (acres) CN Description (subcatchment-numbers) 1.539 0.705 0.355 0.492 3.092 74 89 98 98 84 >75% Grass cover, Good, HSG C (PR 1A-P, PR 1B-P, PR 2-P) Gravel roads, HSG C (PR 1A-P, PR 1B-P, PR 2-P) Paved parking, HSG C (PR 1B-I) Roofs, HSG C (PR 1B-I) TOTAL AREA Printed 12/3/2025 Page 2