240916_40 ERW Stormwater Report FULL

NOAA 24-hr D 2-Year Rainfall=3.44"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 39HydroCAD® 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 0.00 0.00 2.00 0.00 0.00 3.00 0.01 0.01 4.00 0.01 0.01 5.00 0.01 0.01 6.00 0.01 0.01 7.00 0.01 0.01 8.00 0.02 0.02 9.00 0.02 0.02 10.00 0.03 0.03 11.00 0.11 0.11 12.00 1.33 1.33 13.00 0.46 0.46 14.00 0.23 0.23 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 0.06 0.06 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 2-Year Rainfall=3.44"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 40HydroCAD® 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 = 1.68" for 2-Year event Inflow = 1.41 cfs @ 12.10 hrs, Volume= 0.141 af Outflow = 1.41 cfs @ 12.10 hrs, Volume= 0.141 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) 1 0 Inflow Area=1.006 ac 1.41 cfs 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.

NOAA 24-hr D 2-Year Rainfall=3.44"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 41HydroCAD® 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 0.00 0.00 2.00 0.00 0.00 3.00 0.01 0.01 4.00 0.01 0.01 5.00 0.01 0.01 6.00 0.01 0.01 7.00 0.01 0.01 8.00 0.02 0.02 9.00 0.02 0.02 10.00 0.03 0.03 11.00 0.08 0.08 12.00 0.84 0.84 13.00 0.24 0.24 14.00 0.12 0.12 15.00 0.08 0.08 16.00 0.07 0.07 17.00 0.06 0.06 18.00 0.05 0.05 19.00 0.04 0.04 20.00 0.04 0.04 21.00 0.04 0.04 22.00 0.04 0.04 23.00 0.03 0.03 24.00 0.03 0.03 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 2-Year Rainfall=3.44"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 42HydroCAD® 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 = 1.62" for 2-Year event Inflow = 0.84 cfs @ 12.10 hrs, Volume= 0.084 af Outflow = 0.84 cfs @ 12.10 hrs, Volume= 0.084 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) 0.9 0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=0.621 ac 0.84 cfs 0.84 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 2-Year Rainfall=3.44"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 43HydroCAD® 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 0.00 0.00 2.00 0.00 0.00 3.00 0.00 0.00 4.00 0.00 0.00 5.00 0.01 0.01 6.00 0.01 0.01 7.00 0.01 0.01 8.00 0.01 0.01 9.00 0.01 0.01 10.00 0.02 0.02 11.00 0.05 0.05 12.00 0.53 0.53 13.00 0.14 0.14 14.00 0.07 0.07 15.00 0.05 0.05 16.00 0.04 0.04 17.00 0.04 0.04 18.00 0.03 0.03 19.00 0.03 0.03 20.00 0.02 0.02 21.00 0.02 0.02 22.00 0.02 0.02 23.00 0.02 0.02 24.00 0.02 0.02 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 2-Year Rainfall=3.44"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 44HydroCAD® 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 = 1.13" for 2-Year event Inflow = 0.65 cfs @ 12.18 hrs, Volume= 0.068 af Outflow = 0.65 cfs @ 12.18 hrs, Volume= 0.068 af, Atten= 1%, Lag= 0.1 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= 7.18 fps, Min. Travel Time= 0.2 min Avg. Velocity = 2.78 fps, Avg. Travel Time= 0.6 min Peak Storage= 9 cf @ 12.18 hrs Average Depth at Peak Storage= 0.10' , Surface Width= 1.30' 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) 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=0.718 ac Avg. Flow Depth=0.10' Max Vel=7.18 fps 34.0" x 22.0" R=24.9" Elliptical Pipe n=0.011 L=100.0' S=0.1000 '/' Capacity=118.41 cfs 0.65 cfs 0.65 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 2-Year Rainfall=3.44"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 45HydroCAD® 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 2-Year Rainfall=3.44"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 46HydroCAD® 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 0.00 0 0.00 0.00 5.00 0.00 0 0.00 0.00 7.50 0.00 0 0.01 0.00 10.00 0.01 0 0.01 0.01 12.50 0.24 4 0.06 0.24 15.00 0.04 1 0.03 0.04 17.50 0.03 1 0.02 0.03 20.00 0.02 1 0.02 0.02 22.50 0.02 1 0.02 0.02 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 2-Year Rainfall=3.44"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 47HydroCAD® 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 2-Year Rainfall=3.44"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 48HydroCAD® 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 = 0.67" for 2-Year event Inflow = 0.99 cfs @ 12.12 hrs, Volume= 0.100 af Outflow = 0.99 cfs @ 12.12 hrs, Volume= 0.100 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) 1 0 Inflow Area=1.775 ac 0.99 cfs 0.99 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.