Graham Place Subdivision <br />5468_HydroCAD_2-17-26_BAW <br /> Printed 7/9/2026Prepared by A&O Engineering LLC <br />Page 7HydroCAD® 10.20-8a s/n 04993 © 2025 HydroCAD Software Solutions LLC <br />Notes Listing (selected nodes) <br />Line# Node <br />Number <br />Notes <br />1 1489S *To be conservative, an HSG D designation was selected for the site's rating even <br />though Web Soil Survey shows an HSB B rating due to the measured infiltration rate <br />of 0 in/hr. <br />2 1508P Sheet Flow Length Calculation: <br />3 L=(100*(S^1/2))/n <br />4 =(100*(0.0140^1/2))/0.41 <br />5 = 28.9