2022 08 Drainage Report

2022-07-28 Proposed Hydrology NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Dynamic Engineering Printed 8/5/2022 HydroCAD® 10,20-24 sin 08640 © 2021 HydroCAD Software Solutions LLC Zz Time span=0.00-72.00 hrs, dt=0.05 hrs, 1441 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-ind+Trans method - Pond routing by Stor-Ind method ‘Subcatchment 1S: Basin A- Imp. Runoff Area=4,655 sf 10.00% Impervious Runoff Depth=3.21" Tc=10.0 min CN=98 Runoff=0.30 cfs 0.029 af Subcatchment 3S: Basin A - Perv. Runoff Area=24,500 sf 0.00% Impervious Runoff Depth=1.20" Tc=10.0 min CN=74 Runoff=0.65 cfs 0.056 af Subcatchment 4S: Basin B - Imp. Runoff Area=4,648 sf 10.00% Impervious Runoff Depth=3.21" Tc=10.0 min CN=98 Runoff=0.30 cfs 0.029 af ‘Subcatchment 5S: Basin B - Perv. Runoff Area=31,571 sf 0.00% Impervious Runoff Depth=1.20" Tc=10.0 min CN=74 Runoff=0.84 cfs 0.072 af ‘Subcatchment 7S: Basin C - Imp. Runoff Area=4,635 sf 10.00% Impervious Runoff Depth=3.21* To=10.0 min CN=98_ Runoff=0.30 cfs 0.028 af ‘Subcatchment 8S: Basin C - Perv. Runoff Area=31,149 sf 0.00% Impervious Runoff Depth=1.20" To=10.0 min CN=74 Runoff=0.82 cfs 0.071 af Subcatchment 9S: Mt. Pleasant Ave Runoff Area=1,706 sf 100.00% Impervious Runoff Depth=3.21" Tc=10.0 min CN=98 Runoff=0.11 cfs 0.010 af ‘Subcatchment 10S: Mt. Pleasant Ave Runoff Area=40,319 sf 0.00% Impervious Runoff Depth=1.20" Te=10.0 min CN=74 Runoff=1.07 cfs 0.092 af ‘Subcatchment 11S: Basin D - Imp. Runoff Area=2,400 sf 100.00% Impervious Runoff Depth=3.21" To=10.0 min CN=98 Runoff=0.16 cis 0.015 af ‘Subcatchment 12S: Basin D - Perv. Runoff Area=15,983 sf 0.00% Impervious Runoff Depth=1,20" Tc=10.0 min CN=74 Runoff=0.42 cfs 0.037 af Pond 3P: Basin A Peak Elev=625.54' Storage=3,691 cf_Inflow=0.94 ofs 0.085 af Qutflow=0.00 cfs 0.000 af Pond 4P: Basin B Peak Elev=623,78' Storage=4,396 of inflow=1.13 cfs 0.101 af Qutflow=0.00 cfs. 0.000 af Pond 5P: Basin C Peak Elev=620.24' Storage=4,350 cf _Inflow=1.12 cfs 0.100 af ‘Outflow=0.00 cfs 0.000 af Pond 6P: Basin D Peak Elev=616.00' Storage=2,238 cf _Inflow=0.87 cfs 0.051 af Qutflow=0.00 cfs 0.000 af Link 2L: Mt. Pleasant Ave. cfs 0.103 af Link 3L: Mt. Pleasant Ave - Undetained 2022-07-28 Proposed Hydrology NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Dynamic Engineering Printed 8/5/2022 HydroCAD® 10.20-24 s/n 08640 © 2021 HydroCAD Software Solutions

sant Ave - Undetained 2022-07-28 Proposed Hydrology NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Dynamic Engineering Printed 8/5/2022 HydroCAD® 10.20-24 s/n 08640 © 2021 HydroCAD Software Solutions LLC Total Runoff Area = 3.709 ac_ Runoff Volume = 0.440 af Average Runoff Depth = 1.42" 88.83% Pervious = 3.295 ac 11.17% Impervious = 0.414 ac