240916_40 ERW Stormwater Report FULL

NOAA 24-hr D 100-Year Rainfall=8.66"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 153HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Hydrograph for Subcatchment PR 1A-P: Time (hours) Precip. (inches) Excess (inches) Runoff (cfs) 0.00 0.00 0.00 0.00 1.00 0.10 0.00 0.00 2.00 0.21 0.00 0.00 3.00 0.33 0.00 0.00 4.00 0.45 0.00 0.00 5.00 0.59 0.00 0.00 6.00 0.74 0.00 0.00 7.00 0.91 0.01 0.01 8.00 1.12 0.05 0.02 9.00 1.37 0.11 0.04 10.00 1.72 0.23 0.07 11.00 2.25 0.47 0.17 12.00 4.15 1.71 1.16 13.00 6.41 3.53 0.39 14.00 6.94 3.99 0.19 15.00 7.29 4.29 0.13 16.00 7.54 4.51 0.11 17.00 7.75 4.70 0.09 18.00 7.92 4.85 0.07 19.00 8.07 4.99 0.06 20.00 8.21 5.11 0.06 21.00 8.33 5.23 0.06 22.00 8.45 5.33 0.05 23.00 8.56 5.43 0.05 24.00 8.66 5.52 0.04 25.00 8.66 5.52 0.00 26.00 8.66 5.52 0.00 27.00 8.66 5.52 0.00 28.00 8.66 5.52 0.00 29.00 8.66 5.52 0.00 30.00 8.66 5.52 0.00 31.00 8.66 5.52 0.00 32.00 8.66 5.52 0.00 33.00 8.66 5.52 0.00 34.00 8.66 5.52 0.00 35.00 8.66 5.52 0.00 36.00 8.66 5.52 0.00 37.00 8.66 5.52 0.00 38.00 8.66 5.52 0.00 39.00 8.66 5.52 0.00 40.00 8.66 5.52 0.00 41.00 8.66 5.52 0.00 42.00 8.66 5.52 0.00 43.00 8.66 5.52 0.00 44.00 8.66 5.52 0.00 45.00 8.66 5.52 0.00 46.00 8.66 5.52 0.00 47.00 8.66 5.52 0.00 48.00 8.66 5.52 0.00 49.00 8.66 5.52 0.00 50.00 8.66 5.52 0.00 51.00 8.66 5.52 0.00 52.00 8.66 5.52 0.00 53.00 8.66 5.52 0.00 54.00 8.66 5.52 0.00 55.00 8.66 5.52 0.00 56.00 8.66 5.52 0.00 57.00 8.66 5.52 0.00 Time (hours) Precip. (inches) Excess (inches) Runoff (cfs) 58.00 8.66 5.52 0.00 59.00 8.66 5.52 0.00 60.00 8.66 5.52 0.00 61.00 8.66 5.52 0.00 62.00 8.66 5.52 0.00 63.00 8.66 5.52 0.00 64.00 8.66 5.52 0.00 65.00 8.66 5.52 0.00 66.00 8.66 5.52 0.00 67.00 8.66 5.52 0.00 68.00 8.66 5.52 0.00 69.00 8.66 5.52 0.00 70.00 8.66 5.52 0.00 71.00 8.66 5.52 0.00 72.00 8.66 5.52 0.00 This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NOAA 24-hr D 100-Year Rainfall=8.66"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 154HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment PR 1B-P: Runoff = 1.16 cfs @ 12.13 hrs, Volume= 0.093 af, Depth= 7.34" Routed to Pond 2P : Pervious Pavers Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs NOAA 24-hr D 100-Year Rainfall=8.66" Area (sf) CN Description 6,622 89 Gravel roads, HSG C 6,622 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, tc Subcatchment PR 1B-P: Runoff Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 1 0 NOAA 24-hr D 100-Year Rainfall=8.66" Runoff Area=6,622 sf Runoff Volume=0.093 af Runoff Depth=7.34" Tc=6.0 min CN=89 1.16 cfs This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NOAA 24-hr D 100-Year Rainfall=8.66"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 155HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Hydrograph for Subcatchment PR 1B-P: Time (hours) Precip. (inches) Excess (inches) Runoff (cfs) 0.00 0.00 0.00 0.00 1.00 0.10 0.00 0.00 2.00 0.21 0.00 0.00 3.00 0.33 0.00 0.00 4.00 0.45 0.03 0.01 5.00 0.59 0.08 0.01 6.00 0.74 0.14 0.01 7.00 0.91 0.23 0.02 8.00 1.12 0.36 0.02 9.00 1.37 0.54 0.03 10.00 1.72 0.80 0.05 11.00 2.25 1.24 0.09 12.00 4.15 2.96 0.65 13.00 6.41 5.13 0.13 14.00 6.94 5.65 0.06 15.00 7.29 5.99 0.04 16.00 7.54 6.23 0.04 17.00 7.75 6.44 0.03 18.00 7.92 6.61 0.02 19.00 8.07 6.75 0.02 20.00 8.21 6.89 0.02 21.00 8.33 7.01 0.02 22.00 8.45 7.13 0.02 23.00 8.56 7.24 0.02 24.00 8.66 7.34 0.01 25.00 8.66 7.34 0.00 26.00 8.66 7.34 0.00 27.00 8.66 7.34 0.00 28.00 8.66 7.34 0.00 29.00 8.66 7.34 0.00 30.00 8.66 7.34 0.00 31.00 8.66 7.34 0.00 32.00 8.66 7.34 0.00 33.00 8.66 7.34 0.00 34.00 8.66 7.34 0.00 35.00 8.66 7.34 0.00 36.00 8.66 7.34 0.00 37.00 8.66 7.34 0.00 38.00 8.66 7.34 0.00 39.00 8.66 7.34 0.00 40.00 8.66 7.34 0.00 41.00 8.66 7.34 0.00 42.00 8.66 7.34 0.00 43.00 8.66 7.34 0.00 44.00 8.66 7.34 0.00 45.00 8.66 7.34 0.00 46.00 8.66 7.34 0.00 47.00 8.66 7.34 0.00 48.00 8.66 7.34 0.00 49.00 8.66 7.34 0.00 50.00 8.66 7.34 0.00 51.00 8.66 7.34 0.00 52.00 8.66 7.34 0.00 53.00 8.66 7.34 0.00 54.00 8.66 7.34 0.00 55.00 8.66 7.34 0.00 56.00 8.66 7.34 0.00 57.00 8.66 7.34 0.00 Time (hours) Precip. (inches) Excess (inches) Runoff (cfs) 58.00 8.66 7.34 0.00 59.00 8.66 7.34 0.00 60.00 8.66 7.34 0.00 61.00 8.66 7.34 0.00 62.00 8.66 7.34 0.00 63.00 8.66 7.34 0.00 64.00 8.66 7.34 0.00 65.00 8.66 7.34 0.00 66.00 8.66 7.34 0.00 67.00 8.66 7.34 0.00 68.00 8.66 7.34 0.00 69.00 8.66 7.34 0.00 70.00 8.66 7.34 0.00 71.00 8.66 7.34 0.00 72.00 8.66 7.34 0.00 This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NOAA 24-hr D 100-Year Rainfall=8.66"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 156HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment PR 2A-P: Runoff = 0.98 cfs @ 12.09 hrs, Volume= 0.064 af, Depth= 5.52" Routed to Reach DP2 : CHANNEL Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs NOAA 24-hr D 100-Year Rainfall=8.66" Area (sf) CN Description 6,039 74 >75% Grass cover, Good, HSG C 6,039 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.7 81 0.3000 0.50 Sheet Flow, Grass: Short n= 0.150 P2= 3.44" Subcatchment PR 2A-P: Runoff Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 1 0 NOAA 24-hr D 100-Year Rainfall=8.66" Runoff Area=6,039 sf Runoff Volume=0.064 af Runoff Depth=5.52" Flow Length=81' Slope=0.3000 '/' Tc=2.7 min CN=74 0.98 cfs This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NOAA 24-hr D 100-Year Rainfall=8.66"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 157HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Hydrograph for Subcatchment PR 2A-P: Time (hours) Precip. (inches) Excess (inches) Runoff (cfs) 0.00 0.00 0.00 0.00 1.00 0.10 0.00 0.00 2.00 0.21 0.00 0.00 3.00 0.33 0.00 0.00 4.00 0.45 0.00 0.00 5.00 0.59 0.00 0.00 6.00 0.74 0.00 0.00 7.00 0.91 0.01 0.00 8.00 1.12 0.05 0.01 9.00 1.37 0.11 0.01 10.00 1.72 0.23 0.02 11.00 2.25 0.47 0.05 12.00 4.15 1.71 0.55 13.00 6.41 3.53 0.10 14.00 6.94 3.99 0.05 15.00 7.29 4.29 0.03 16.00 7.54 4.51 0.03 17.00 7.75 4.70 0.02 18.00 7.92 4.85 0.02 19.00 8.07 4.99 0.02 20.00 8.21 5.11 0.02 21.00 8.33 5.23 0.02 22.00 8.45 5.33 0.01 23.00 8.56 5.43 0.01 24.00 8.66 5.52 0.01 25.00 8.66 5.52 0.00 26.00 8.66 5.52 0.00 27.00 8.66 5.52 0.00 28.00 8.66 5.52 0.00 29.00 8.66 5.52 0.00 30.00 8.66 5.52 0.00 31.00 8.66 5.52 0.00 32.00 8.66 5.52 0.00 33.00 8.66 5.52 0.00 34.00 8.66 5.52 0.00 35.00 8.66 5.52 0.00 36.00 8.66 5.52 0.00 37.00 8.66 5.52 0.00 38.00 8.66 5.52 0.00 39.00 8.66 5.52 0.00 40.00 8.66 5.52 0.00 41.00 8.66 5.52 0.00 42.00 8.66 5.52 0.00 43.00 8.66 5.52 0.00 44.00 8.66 5.52 0.00 45.00 8.66 5.52 0.00 46.00 8.66 5.52 0.00 47.00 8.66 5.52 0.00 48.00 8.66 5.52 0.00 49.00 8.66 5.52 0.00 50.00 8.66 5.52 0.00 51.00 8.66 5.52 0.00 52.00 8.66 5.52 0.00 53.00 8.66 5.52 0.00 54.00 8.66 5.52 0.00 55.00 8.66 5.52 0.00 56.00 8.66 5.52 0.00 57.00 8.66 5.52 0.00 Time (hours) Precip. (inches) Excess (inches) Runoff (cfs) 58.00 8.66 5.52 0.00 59.00 8.66 5.52 0.00 60.00 8.66 5.52 0.00 61.00 8.66 5.52 0.00 62.00 8.66 5.52 0.00 63.00 8.66 5.52 0.00 64.00 8.66 5.52 0.00 65.00 8.66 5.52 0.00 66.00 8.66 5.52 0.00 67.00 8.66 5.52 0.00 68.00 8.66 5.52 0.00 69.00 8.66 5.52 0.00 70.00 8.66 5.52 0.00 71.00 8.66 5.52 0.00 72.00 8.66 5.52 0.00 This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NOAA 24-hr D 100-Year Rainfall=8.66"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 158HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment PR 2C-I: Runoff = 1.19 cfs @ 12.06 hrs, Volume= 0.091 af, Depth= 8.42" Routed to Reach 8R : (new Reach) Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs NOAA 24-hr D 100-Year Rainfall=8.66" Area (sf) CN Description 5,659 98 Unconnected pavement, HSG A 5,659 100.00% Impervious Area 5,659 100.00% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.0 86 0.0230 1.46 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.44" Subcatchment PR 2C-I: Runoff Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 1 0 NOAA 24-hr D 100-Year Rainfall=8.66" Runoff Area=5,659 sf Runoff Volume=0.091 af Runoff Depth=8.42" Flow Length=86' Slope=0.0230 '/' Tc=1.0 min CN=98 1.19 cfs This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NOAA 24-hr D 100-Year Rainfall=8.66"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 159HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Hydrograph for Subcatchment PR 2C-I: Time (hours) Precip. (inches) Excess (inches) Runoff (cfs) 0.00 0.00 0.00 0.00 1.00 0.10 0.01 0.01 2.00 0.21 0.08 0.01 3.00 0.33 0.17 0.01 4.00 0.45 0.28 0.02 5.00 0.59 0.40 0.02 6.00 0.74 0.54 0.02 7.00 0.91 0.71 0.02 8.00 1.12 0.91 0.03 9.00 1.37 1.16 0.03 10.00 1.72 1.49 0.05 11.00 2.25 2.02 0.10 12.00 4.15 3.91 0.80 13.00 6.41 6.17 0.10 14.00 6.94 6.70 0.05 15.00 7.29 7.05 0.04 16.00 7.54 7.30 0.03 17.00 7.75 7.51 0.03 18.00 7.92 7.68 0.02 19.00 8.07 7.83 0.02 20.00 8.21 7.97 0.02 21.00 8.33 8.09 0.02 22.00 8.45 8.21 0.01 23.00 8.56 8.32 0.01 24.00 8.66 8.42 0.01 25.00 8.66 8.42 0.00 26.00 8.66 8.42 0.00 27.00 8.66 8.42 0.00 28.00 8.66 8.42 0.00 29.00 8.66 8.42 0.00 30.00 8.66 8.42 0.00 31.00 8.66 8.42 0.00 32.00 8.66 8.42 0.00 33.00 8.66 8.42 0.00 34.00 8.66 8.42 0.00 35.00 8.66 8.42 0.00 36.00 8.66 8.42 0.00 37.00 8.66 8.42 0.00 38.00 8.66 8.42 0.00 39.00 8.66 8.42 0.00 40.00 8.66 8.42 0.00 41.00 8.66 8.42 0.00 42.00 8.66 8.42 0.00 43.00 8.66 8.42 0.00 44.00 8.66 8.42 0.00 45.00 8.66 8.42 0.00 46.00 8.66 8.42 0.00 47.00 8.66 8.42 0.00 48.00 8.66 8.42 0.00 49.00 8.66 8.42 0.00 50.00 8.66 8.42 0.00 51.00 8.66 8.42 0.00 52.00 8.66 8.42 0.00 53.00 8.66 8.42 0.00 54.00 8.66 8.42 0.00 55.00 8.66 8.42 0.00 56.00 8.66 8.42 0.00 57.00 8.66 8.42 0.00 Time (hours) Precip. (inches) Excess (inches) Runoff (cfs) 58.00 8.66 8.42 0.00 59.00 8.66 8.42 0.00 60.00 8.66 8.42 0.00 61.00 8.66 8.42 0.00 62.00 8.66 8.42 0.00 63.00 8.66 8.42 0.00 64.00 8.66 8.42 0.00 65.00 8.66 8.42 0.00 66.00 8.66 8.42 0.00 67.00 8.66 8.42 0.00 68.00 8.66 8.42 0.00 69.00 8.66 8.42 0.00 70.00 8.66 8.42 0.00 71.00 8.66 8.42 0.00 72.00 8.66 8.42 0.00 This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NOAA 24-hr D 100-Year Rainfall=8.66"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 160HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment PR 2C-P: Runoff = 2.72 cfs @ 12.16 hrs, Volume= 0.226 af, Depth= 5.52" Routed to Reach 8R : (new Reach) Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs NOAA 24-hr D 100-Year Rainfall=8.66" Area (sf) CN Description 21,408 74 >75% Grass cover, Good, HSG C 21,408 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.4 100 0.0200 0.18 Sheet Flow, Grass: Short n= 0.150 P2= 3.44" Subcatchment PR 2C-P: Runoff Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 3 2 1 0 NOAA 24-hr D 100-Year Rainfall=8.66" Runoff Area=21,408 sf Runoff Volume=0.226 af Runoff Depth=5.52" Flow Length=100' Slope=0.0200 '/' Tc=9.4 min CN=74 2.72 cfs This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NOAA 24-hr D 100-Year Rainfall=8.66"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 161HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Hydrograph for Subcatchment PR 2C-P: Time (hours) Precip. (inches) Excess (inches) Runoff (cfs) 0.00 0.00 0.00 0.00 1.00 0.10 0.00 0.00 2.00 0.21 0.00 0.00 3.00 0.33 0.00 0.00 4.00 0.45 0.00 0.00 5.00 0.59 0.00 0.00 6.00 0.74 0.00 0.00 7.00 0.91 0.01 0.01 8.00 1.12 0.05 0.02 9.00 1.37 0.11 0.04 10.00 1.72 0.23 0.07 11.00 2.25 0.47 0.17 12.00 4.15 1.71 1.23 13.00 6.41 3.53 0.38 14.00 6.94 3.99 0.19 15.00 7.29 4.29 0.13 16.00 7.54 4.51 0.10 17.00 7.75 4.70 0.09 18.00 7.92 4.85 0.07 19.00 8.07 4.99 0.06 20.00 8.21 5.11 0.06 21.00 8.33 5.23 0.06 22.00 8.45 5.33 0.05 23.00 8.56 5.43 0.05 24.00 8.66 5.52 0.04 25.00 8.66 5.52 0.00 26.00 8.66 5.52 0.00 27.00 8.66 5.52 0.00 28.00 8.66 5.52 0.00 29.00 8.66 5.52 0.00 30.00 8.66 5.52 0.00 31.00 8.66 5.52 0.00 32.00 8.66 5.52 0.00 33.00 8.66 5.52 0.00 34.00 8.66 5.52 0.00 35.00 8.66 5.52 0.00 36.00 8.66 5.52 0.00 37.00 8.66 5.52 0.00 38.00 8.66 5.52 0.00 39.00 8.66 5.52 0.00 40.00 8.66 5.52 0.00 41.00 8.66 5.52 0.00 42.00 8.66 5.52 0.00 43.00 8.66 5.52 0.00 44.00 8.66 5.52 0.00 45.00 8.66 5.52 0.00 46.00 8.66 5.52 0.00 47.00 8.66 5.52 0.00 48.00 8.66 5.52 0.00 49.00 8.66 5.52 0.00 50.00 8.66 5.52 0.00 51.00 8.66 5.52 0.00 52.00 8.66 5.52 0.00 53.00 8.66 5.52 0.00 54.00 8.66 5.52 0.00 55.00 8.66 5.52 0.00 56.00 8.66 5.52 0.00 57.00 8.66 5.52 0.00 Time (hours) Precip. (inches) Excess (inches) Runoff (cfs) 58.00 8.66 5.52 0.00 59.00 8.66 5.52 0.00 60.00 8.66 5.52 0.00 61.00 8.66 5.52 0.00 62.00 8.66 5.52 0.00 63.00 8.66 5.52 0.00 64.00 8.66 5.52 0.00 65.00 8.66 5.52 0.00 66.00 8.66 5.52 0.00 67.00 8.66 5.52 0.00 68.00 8.66 5.52 0.00 69.00 8.66 5.52 0.00 70.00 8.66 5.52 0.00 71.00 8.66 5.52 0.00 72.00 8.66 5.52 0.00 This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NOAA 24-hr D 100-Year Rainfall=8.66"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 162HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment PR 3 - P: Runoff = 1.41 cfs @ 12.15 hrs, Volume= 0.110 af, Depth= 5.52" Routed to Reach DP3 : TOTAL Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs NOAA 24-hr D 100-Year Rainfall=8.66" Area (sf) CN Description 10,406 74 >75% Grass cover, Good, HSG C 10,406 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.4 72 0.0280 0.19 Sheet Flow, Grass: Short n= 0.150 P2= 3.44" 1.4 28 0.1790 0.33 Sheet Flow, Grass: Short n= 0.150 P2= 3.44" 0.0 9 0.2220 7.59 Shallow Concentrated Flow, Unpaved Kv= 16.1 fps 7.8 109 Total Subcatchment PR 3 - P: Runoff Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 1 0 NOAA 24-hr D 100-Year Rainfall=8.66" Runoff Area=10,406 sf Runoff Volume=0.110 af Runoff Depth=5.52" Flow Length=109' Tc=7.8 min CN=74 1.41 cfs This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.