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 173HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Hydrograph for Reach 3R: TOTAL Time (hours) Inflow (cfs) Elevation (feet) Outflow (cfs) 0.00 0.00 0.00 1.00 0.01 0.01 2.00 0.02 0.02 3.00 0.02 0.02 4.00 0.03 0.03 5.00 0.03 0.03 6.00 0.04 0.04 7.00 0.08 0.08 8.00 0.14 0.14 9.00 0.21 0.21 10.00 0.38 0.38 11.00 0.81 0.81 12.00 5.86 5.86 13.00 1.62 1.62 14.00 0.80 0.80 15.00 0.55 0.55 16.00 0.44 0.44 17.00 0.37 0.37 18.00 0.30 0.30 19.00 0.27 0.27 20.00 0.26 0.26 21.00 0.24 0.24 22.00 0.22 0.22 23.00 0.20 0.20 24.00 0.18 0.18 25.00 0.00 0.00 26.00 0.00 0.00 27.00 0.00 0.00 28.00 0.00 0.00 29.00 0.00 0.00 30.00 0.00 0.00 31.00 0.00 0.00 32.00 0.00 0.00 33.00 0.00 0.00 34.00 0.00 0.00 35.00 0.00 0.00 36.00 0.00 0.00 37.00 0.00 0.00 38.00 0.00 0.00 39.00 0.00 0.00 40.00 0.00 0.00 41.00 0.00 0.00 42.00 0.00 0.00 43.00 0.00 0.00 44.00 0.00 0.00 45.00 0.00 0.00 46.00 0.00 0.00 47.00 0.00 0.00 48.00 0.00 0.00 49.00 0.00 0.00 50.00 0.00 0.00 51.00 0.00 0.00 52.00 0.00 0.00 53.00 0.00 0.00 54.00 0.00 0.00 55.00 0.00 0.00 56.00 0.00 0.00 57.00 0.00 0.00 Time (hours) Inflow (cfs) Elevation (feet) Outflow (cfs) 58.00 0.00 0.00 59.00 0.00 0.00 60.00 0.00 0.00 61.00 0.00 0.00 62.00 0.00 0.00 63.00 0.00 0.00 64.00 0.00 0.00 65.00 0.00 0.00 66.00 0.00 0.00 67.00 0.00 0.00 68.00 0.00 0.00 69.00 0.00 0.00 70.00 0.00 0.00 71.00 0.00 0.00 72.00 0.00 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 174HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Summary for Reach 4R: Inflow Area = 1.006 ac, 21.70% Impervious, Inflow Depth = 6.24" for 100-Year event Inflow = 5.22 cfs @ 12.11 hrs, Volume= 0.523 af Outflow = 5.22 cfs @ 12.11 hrs, Volume= 0.523 af, Atten= 0%, Lag= 0.0 min Routed to Reach 1R : TOP Routing by Stor-Ind+Trans method, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs Reach 4R: Inflow Outflow Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 5 4 3 2 1 0 Inflow Area=1.006 ac 5.22 cfs 5.22 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 175HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Hydrograph for Reach 4R: Time (hours) Inflow (cfs) Elevation (feet) Outflow (cfs) 0.00 0.00 0.00 1.00 0.01 0.01 2.00 0.02 0.02 3.00 0.02 0.02 4.00 0.03 0.03 5.00 0.03 0.03 6.00 0.04 0.04 7.00 0.06 0.06 8.00 0.09 0.09 9.00 0.12 0.12 10.00 0.21 0.21 11.00 0.44 0.44 12.00 3.16 3.16 13.00 0.80 0.80 14.00 0.39 0.39 15.00 0.27 0.27 16.00 0.22 0.22 17.00 0.18 0.18 18.00 0.15 0.15 19.00 0.13 0.13 20.00 0.13 0.13 21.00 0.12 0.12 22.00 0.11 0.11 23.00 0.10 0.10 24.00 0.09 0.09 25.00 0.00 0.00 26.00 0.00 0.00 27.00 0.00 0.00 28.00 0.00 0.00 29.00 0.00 0.00 30.00 0.00 0.00 31.00 0.00 0.00 32.00 0.00 0.00 33.00 0.00 0.00 34.00 0.00 0.00 35.00 0.00 0.00 36.00 0.00 0.00 37.00 0.00 0.00 38.00 0.00 0.00 39.00 0.00 0.00 40.00 0.00 0.00 41.00 0.00 0.00 42.00 0.00 0.00 43.00 0.00 0.00 44.00 0.00 0.00 45.00 0.00 0.00 46.00 0.00 0.00 47.00 0.00 0.00 48.00 0.00 0.00 49.00 0.00 0.00 50.00 0.00 0.00 51.00 0.00 0.00 52.00 0.00 0.00 53.00 0.00 0.00 54.00 0.00 0.00 55.00 0.00 0.00 56.00 0.00 0.00 57.00 0.00 0.00 Time (hours) Inflow (cfs) Elevation (feet) Outflow (cfs) 58.00 0.00 0.00 59.00 0.00 0.00 60.00 0.00 0.00 61.00 0.00 0.00 62.00 0.00 0.00 63.00 0.00 0.00 64.00 0.00 0.00 65.00 0.00 0.00 66.00 0.00 0.00 67.00 0.00 0.00 68.00 0.00 0.00 69.00 0.00 0.00 70.00 0.00 0.00 71.00 0.00 0.00 72.00 0.00 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 176HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Summary for Reach 8R: (new Reach) Inflow Area = 0.621 ac, 20.91% Impervious, Inflow Depth = 6.13" for 100-Year event Inflow = 3.23 cfs @ 12.12 hrs, Volume= 0.317 af Outflow = 3.23 cfs @ 12.12 hrs, Volume= 0.317 af, Atten= 0%, Lag= 0.0 min Routed to Pond 12P : Subsurface Infiltration Basin Routing by Stor-Ind+Trans method, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs Reach 8R: (new Reach) Inflow Outflow Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 3 2 1 0 Inflow Area=0.621 ac 3.23 cfs 3.23 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 177HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Hydrograph for Reach 8R: (new Reach) Time (hours) Inflow (cfs) Elevation (feet) Outflow (cfs) 0.00 0.00 0.00 1.00 0.01 0.01 2.00 0.01 0.01 3.00 0.01 0.01 4.00 0.02 0.02 5.00 0.02 0.02 6.00 0.02 0.02 7.00 0.03 0.03 8.00 0.05 0.05 9.00 0.07 0.07 10.00 0.13 0.13 11.00 0.26 0.26 12.00 2.04 2.04 13.00 0.48 0.48 14.00 0.24 0.24 15.00 0.16 0.16 16.00 0.13 0.13 17.00 0.11 0.11 18.00 0.09 0.09 19.00 0.08 0.08 20.00 0.08 0.08 21.00 0.07 0.07 22.00 0.07 0.07 23.00 0.06 0.06 24.00 0.05 0.05 25.00 0.00 0.00 26.00 0.00 0.00 27.00 0.00 0.00 28.00 0.00 0.00 29.00 0.00 0.00 30.00 0.00 0.00 31.00 0.00 0.00 32.00 0.00 0.00 33.00 0.00 0.00 34.00 0.00 0.00 35.00 0.00 0.00 36.00 0.00 0.00 37.00 0.00 0.00 38.00 0.00 0.00 39.00 0.00 0.00 40.00 0.00 0.00 41.00 0.00 0.00 42.00 0.00 0.00 43.00 0.00 0.00 44.00 0.00 0.00 45.00 0.00 0.00 46.00 0.00 0.00 47.00 0.00 0.00 48.00 0.00 0.00 49.00 0.00 0.00 50.00 0.00 0.00 51.00 0.00 0.00 52.00 0.00 0.00 53.00 0.00 0.00 54.00 0.00 0.00 55.00 0.00 0.00 56.00 0.00 0.00 57.00 0.00 0.00 Time (hours) Inflow (cfs) Elevation (feet) Outflow (cfs) 58.00 0.00 0.00 59.00 0.00 0.00 60.00 0.00 0.00 61.00 0.00 0.00 62.00 0.00 0.00 63.00 0.00 0.00 64.00 0.00 0.00 65.00 0.00 0.00 66.00 0.00 0.00 67.00 0.00 0.00 68.00 0.00 0.00 69.00 0.00 0.00 70.00 0.00 0.00 71.00 0.00 0.00 72.00 0.00 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 178HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Summary for Reach DP1: TOP Inflow Area = 0.718 ac, 9.34% Impervious, Inflow Depth = 4.62" for 100-Year event Inflow = 2.88 cfs @ 12.18 hrs, Volume= 0.276 af Outflow = 2.87 cfs @ 12.18 hrs, Volume= 0.276 af, Atten= 0%, Lag= 0.2 min Routed to Reach DP2 : CHANNEL Routing by Stor-Ind+Trans method, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs Max. Velocity= 11.24 fps, Min. Travel Time= 0.1 min Avg. Velocity = 3.76 fps, Avg. Travel Time= 0.4 min Peak Storage= 25 cf @ 12.18 hrs Average Depth at Peak Storage= 0.21' , Surface Width= 1.81' Bank-Full Depth= 1.83' Flow Area= 4.1 sf, Capacity= 118.41 cfs 34.0" W x 22.0" H, R=24.9" Elliptical Pipe n= 0.011 Concrete pipe, straight & clean Length= 100.0' Slope= 0.1000 '/' Inlet Invert= 0.00', Outlet Invert= -10.00' Reach DP1: TOP Inflow Outflow Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 3 2 1 0 Inflow Area=0.718 ac Avg. Flow Depth=0.21' Max Vel=11.24 fps 34.0" x 22.0" R=24.9" Elliptical Pipe n=0.011 L=100.0' S=0.1000 '/' Capacity=118.41 cfs 2.88 cfs 2.87 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 179HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Reach DP1: TOP Storage Stage-Storage Storage (cubic-feet) 400350300250200150100500 Depth (feet) 1 0 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 180HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Hydrograph for Reach DP1: TOP Time (hours) Inflow (cfs) Storage (cubic-feet) Elevation (feet) Outflow (cfs) 0.00 0.00 0 0.00 0.00 2.50 0.01 0 0.01 0.01 5.00 0.01 0 0.01 0.01 7.50 0.03 1 0.02 0.03 10.00 0.10 2 0.04 0.10 12.50 0.90 11 0.12 0.90 15.00 0.15 3 0.05 0.15 17.50 0.09 2 0.04 0.09 20.00 0.07 2 0.04 0.07 22.50 0.06 2 0.03 0.06 25.00 0.00 0 0.00 0.00 27.50 0.00 0 0.00 0.00 30.00 0.00 0 0.00 0.00 32.50 0.00 0 0.00 0.00 35.00 0.00 0 0.00 0.00 37.50 0.00 0 0.00 0.00 40.00 0.00 0 0.00 0.00 42.50 0.00 0 0.00 0.00 45.00 0.00 0 0.00 0.00 47.50 0.00 0 0.00 0.00 50.00 0.00 0 0.00 0.00 52.50 0.00 0 0.00 0.00 55.00 0.00 0 0.00 0.00 57.50 0.00 0 0.00 0.00 60.00 0.00 0 0.00 0.00 62.50 0.00 0 0.00 0.00 65.00 0.00 0 0.00 0.00 67.50 0.00 0 0.00 0.00 70.00 0.00 0 0.00 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 181HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Reach DP1: TOP Elevation (feet) End-Area (sq-ft) Storage (cubic-feet) 0.00 0.0 0 0.02 0.0 1 0.04 0.0 2 0.06 0.0 4 0.08 0.1 6 0.10 0.1 9 0.12 0.1 11 0.14 0.1 14 0.16 0.2 17 0.18 0.2 20 0.20 0.2 24 0.22 0.3 28 0.24 0.3 31 0.26 0.4 35 0.28 0.4 39 0.30 0.4 44 0.32 0.5 48 0.34 0.5 52 0.36 0.6 57 0.38 0.6 62 0.40 0.7 67 0.42 0.7 71 0.44 0.8 76 0.46 0.8 81 0.48 0.9 86 0.50 0.9 91 0.52 1.0 97 0.54 1.0 102 0.56 1.1 107 0.58 1.1 112 0.60 1.2 118 0.62 1.2 123 0.64 1.3 129 0.66 1.3 134 0.68 1.4 140 0.70 1.5 145 0.72 1.5 151 0.74 1.6 156 0.76 1.6 162 0.78 1.7 167 0.80 1.7 173 0.82 1.8 179 0.84 1.8 184 0.86 1.9 190 0.88 2.0 196 0.90 2.0 201 0.92 2.1 207 0.94 2.1 213 0.96 2.2 218 0.98 2.2 224 1.00 2.3 230 1.02 2.4 235 1.04 2.4 241 1.06 2.5 246 1.08 2.5 252 1.10 2.6 258 1.12 2.6 263 1.14 2.7 269 Elevation (feet) End-Area (sq-ft) Storage (cubic-feet) 1.16 2.7 274 1.18 2.8 280 1.20 2.9 285 1.22 2.9 291 1.24 3.0 296 1.26 3.0 301 1.28 3.1 307 1.30 3.1 312 1.32 3.2 317 1.34 3.2 322 1.36 3.3 327 1.38 3.3 332 1.40 3.4 337 1.42 3.4 342 1.44 3.5 347 1.46 3.5 352 1.48 3.6 356 1.50 3.6 361 1.52 3.7 365 1.54 3.7 370 1.56 3.7 374 1.58 3.8 378 1.60 3.8 382 1.62 3.9 386 1.64 3.9 389 1.66 3.9 393 1.68 4.0 396 1.70 4.0 399 1.72 4.0 402 1.74 4.0 404 1.76 4.1 407 1.78 4.1 409 1.80 4.1 410 1.82 4.1 411 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 182HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Summary for Reach DP2: CHANNEL Inflow Area = 1.775 ac, 25.99% Impervious, Inflow Depth = 4.19" for 100-Year event Inflow = 4.04 cfs @ 12.17 hrs, Volume= 0.620 af Outflow = 4.04 cfs @ 12.17 hrs, Volume= 0.620 af, Atten= 0%, Lag= 0.0 min Routed to Reach DP3 : TOTAL Routing by Stor-Ind+Trans method, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs Reach DP2: CHANNEL Inflow Outflow Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 4 3 2 1 0 Inflow Area=1.775 ac 4.04 cfs 4.04 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.