240916_40 ERW Stormwater Report FULL

Stormwater Management Report | September 16, 2024 Appendix #01 | HydroCAD Output Appendix

1S 2BP-I EX 1-IEX 1-P EX 2-P EX 3 - P PR 1A-I PR 1A-P PR 1B-P PR 2A-P PR 2C-I PR 2C-P PR 3 - P PR-2B-I PR-2B-P 1R TOP 2R CHANNEL 3R TOTAL 4R 8R (new Reach) DP1 TOP DP2 CHANNEL DP3 TOTAL EX 1 2P Pervious Pavers 10P CB (new Pond) 11P Existing Drywell System 12P Subsurface Infiltration Basin Routing Diagram for 240913_40 ERW Waymaker Proposed Prepared by Colliers Engineering & Design, Printed 9/16/2024 HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Subcat Reach Pond Link This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 2HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Rainfall Events Listing (selected events) Event# Event Name Storm Type Curve Mode Duration (hours) B/B Depth (inches) AMC 1 2-Year NOAA 24-hr D Default 24.00 1 3.44 2 2 10-Year NOAA 24-hr D Default 24.00 1 5.22 2 3 100-Year NOAA 24-hr D Default 24.00 1 8.66 2 4 WQ NJ DEP 2-hr Default 2.00 1 1.25 2 This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 3HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Area Listing (selected nodes) Area (acres) CN Description (subcatchment-numbers) 3.163 74 >75% Grass cover, Good, HSG C (EX 1-P, EX 2-P, EX 3 - P, PR 1A-P, PR 2A-P, PR 2C-P, PR 3 - P, PR-2B-P) 0.239 89 Gravel roads, HSG C (EX 1-P, EX 2-P, EX 3 - P, PR 1B-P) 0.264 98 Paved parking, HSG C (1S, PR-2B-I) 0.285 98 Paved roads w/curbs & sewers, HSG C (EX 1-I, PR 1A-I) 0.130 98 Unconnected pavement, HSG A (PR 2C-I) 4.082 79 TOTAL AREA 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 4HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC 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 Runoff Area=2,878 sf 100.00% Impervious Runoff Depth=3.21"Subcatchment 1S: 2BP-I Flow Length=75' Slope=0.0140 '/' Tc=1.1 min CN=98 Runoff=0.24 cfs 0.018 af Runoff Area=9,508 sf 100.00% Impervious Runoff Depth=3.21"Subcatchment EX 1-I: Flow Length=149' Tc=1.6 min CN=98 Runoff=0.78 cfs 0.058 af Runoff Area=34,310 sf 0.00% Impervious Runoff Depth=1.26"Subcatchment EX 1-P: Flow Length=233' Tc=10.4 min CN=75 Runoff=0.95 cfs 0.083 af Runoff Area=33,427 sf 0.00% Impervious Runoff Depth=1.20"Subcatchment EX 2-P: Flow Length=251' Tc=10.1 min CN=74 Runoff=0.88 cfs 0.077 af Runoff Area=12,817 sf 0.00% Impervious Runoff Depth=1.32"Subcatchment EX 3 - P: Flow Length=109' Tc=7.8 min CN=76 Runoff=0.42 cfs 0.032 af Runoff Area=2,919 sf 100.00% Impervious Runoff Depth=3.21"Subcatchment PR 1A-I: Flow Length=149' Tc=1.6 min CN=98 Runoff=0.24 cfs 0.018 af Runoff Area=21,722 sf 0.00% Impervious Runoff Depth=1.20"Subcatchment PR 1A-P: Flow Length=395' Tc=10.5 min CN=74 Runoff=0.57 cfs 0.050 af Runoff Area=6,622 sf 0.00% Impervious Runoff Depth=2.30"Subcatchment PR 1B-P: Tc=6.0 min CN=89 Runoff=0.39 cfs 0.029 af Runoff Area=6,039 sf 0.00% Impervious Runoff Depth=1.20"Subcatchment PR 2A-P: Flow Length=81' Slope=0.3000 '/' Tc=2.7 min CN=74 Runoff=0.21 cfs 0.014 af Runoff Area=5,659 sf 100.00% Impervious Runoff Depth=3.21"Subcatchment PR 2C-I: Flow Length=86' Slope=0.0230 '/' Tc=1.0 min CN=98 Runoff=0.47 cfs 0.035 af Runoff Area=21,408 sf 0.00% Impervious Runoff Depth=1.20"Subcatchment PR 2C-P: Flow Length=100' Slope=0.0200 '/' Tc=9.4 min CN=74 Runoff=0.58 cfs 0.049 af Runoff Area=10,406 sf 0.00% Impervious Runoff Depth=1.20"Subcatchment PR 3 - P: Flow Length=109' Tc=7.8 min CN=74 Runoff=0.30 cfs 0.024 af Runoff Area=8,642 sf 100.00% Impervious Runoff Depth=3.21"Subcatchment PR-2B-I: Flow Length=75' Slope=0.0140 '/' Tc=1.1 min CN=98 Runoff=0.71 cfs 0.053 af Runoff Area=1,446 sf 0.00% Impervious Runoff Depth=1.20"Subcatchment PR-2B-P: Flow Length=114' Tc=8.0 min CN=74 Runoff=0.04 cfs 0.003 af Inflow=1.41 cfs 0.141

Tc=1.1 min CN=98 Runoff=0.71 cfs 0.053 af Runoff Area=1,446 sf 0.00% Impervious Runoff Depth=1.20"Subcatchment PR-2B-P: Flow Length=114' Tc=8.0 min CN=74 Runoff=0.04 cfs 0.003 af Inflow=1.41 cfs 0.141 afReach 1R: TOP Outflow=1.41 cfs 0.141 af Inflow=2.08 cfs 0.218 afReach 2R: CHANNEL Outflow=2.08 cfs 0.218 af Inflow=2.47 cfs 0.250 afReach 3R: TOTAL Outflow=2.47 cfs 0.250 af 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 5HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Inflow=1.41 cfs 0.141 afReach 4R: Outflow=1.41 cfs 0.141 af Inflow=0.84 cfs 0.084 afReach 8R: (new Reach) Outflow=0.84 cfs 0.084 af Avg. Flow Depth=0.10' Max Vel=7.18 fps Inflow=0.65 cfs 0.068 afReach DP1: TOP 34.0" x 22.0", R=24.9" Elliptical Pipe n=0.011 L=100.0' S=0.1000 '/' Capacity=118.41 cfs Outflow=0.65 cfs 0.068 af Inflow=0.99 cfs 0.100 afReach DP2: CHANNEL Outflow=0.99 cfs 0.100 af Inflow=1.23 cfs 0.124 afReach DP3: TOTAL Outflow=1.23 cfs 0.124 af Inflow=0.65 cfs 0.068 afReach EX 1: Outflow=0.65 cfs 0.068 af Peak Elev=624.53' Storage=0.007 af Inflow=0.39 cfs 0.029 afPond 2P: Pervious Pavers Outflow=0.08 cfs 0.029 af Peak Elev=0.29' Inflow=0.65 cfs 0.068 afPond 10P: (new Pond) Outflow=0.65 cfs 0.068 af Peak Elev=608.65' Storage=0.019 af Inflow=0.74 cfs 0.058 afPond 11P: Existing Drywell System Discarded=0.03 cfs 0.039 af Primary=0.17 cfs 0.018 af Outflow=0.20 cfs 0.058 af Peak Elev=622.57' Storage=0.041 af Inflow=1.06 cfs 0.101 afPond 12P: Subsurface Infiltration Basin Discarded=0.09 cfs 0.100 af Primary=0.01 cfs 0.001 af Outflow=0.10 cfs 0.101 af Total Runoff Area = 4.082 ac Runoff Volume = 0.542 af Average Runoff Depth = 1.59" 83.35% Pervious = 3.402 ac 16.65% Impervious = 0.680 ac 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 6HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment 1S: 2BP-I Runoff = 0.24 cfs @ 12.06 hrs, Volume= 0.018 af, Depth= 3.21" Routed to Pond 12P : Subsurface Infiltration Basin 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 2-Year Rainfall=3.44" Area (sf) CN Description 2,878 98 Paved parking, HSG C 2,878 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.1 75 0.0140 1.17 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.44" Subcatchment 1S: 2BP-I Runoff Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 NOAA 24-hr D 2-Year Rainfall=3.44" Runoff Area=2,878 sf Runoff Volume=0.018 af Runoff Depth=3.21" Flow Length=75' Slope=0.0140 '/' Tc=1.1 min CN=98 0.24 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 7HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Hydrograph for Subcatchment 1S: 2BP-I Time (hours) Precip. (inches) Excess (inches) Runoff (cfs) 0.00 0.00 0.00 0.00 1.00 0.04 0.00 0.00 2.00 0.08 0.01 0.00 3.00 0.13 0.03 0.00 4.00 0.18 0.06 0.00 5.00 0.24 0.09 0.00 6.00 0.29 0.14 0.00 7.00 0.36 0.20 0.00 8.00 0.45 0.27 0.01 9.00 0.55 0.36 0.01 10.00 0.68 0.49 0.01 11.00 0.89 0.69 0.02 12.00 1.65 1.43 0.16 13.00 2.55 2.32 0.02 14.00 2.76 2.53 0.01 15.00 2.89 2.66 0.01 16.00 2.99 2.76 0.01 17.00 3.08 2.85 0.01 18.00 3.15 2.91 0.00 19.00 3.20 2.97 0.00 20.00 3.26 3.03 0.00 21.00 3.31 3.08 0.00 22.00 3.36 3.12 0.00 23.00 3.40 3.17 0.00 24.00 3.44 3.21 0.00 25.00 3.44 3.21 0.00 26.00 3.44 3.21 0.00 27.00 3.44 3.21 0.00 28.00 3.44 3.21 0.00 29.00 3.44 3.21 0.00 30.00 3.44 3.21 0.00 31.00 3.44 3.21 0.00 32.00 3.44 3.21 0.00 33.00 3.44 3.21 0.00 34.00 3.44 3.21 0.00 35.00 3.44 3.21 0.00 36.00 3.44 3.21 0.00 37.00 3.44 3.21 0.00 38.00 3.44 3.21 0.00 39.00 3.44 3.21 0.00 40.00 3.44 3.21 0.00 41.00 3.44 3.21 0.00 42.00 3.44 3.21 0.00 43.00 3.44 3.21 0.00 44.00 3.44 3.21 0.00 45.00 3.44 3.21 0.00 46.00 3.44 3.21 0.00 47.00 3.44 3.21 0.00 48.00 3.44 3.21 0.00 49.00 3.44 3.21 0.00 50.00 3.44 3.21 0.00 51.00 3.44 3.21 0.00 52.00 3.44 3.21 0.00 53.00 3.44 3.21 0.00 54.00 3.44 3.21 0.00 55.00 3.44 3.21 0.00 56.00 3.44 3.21 0.00 57.00 3.44 3.21 0.00 Time (hours) Precip. (inches) Excess (inches) Runoff (cfs) 58.00 3.44 3.21 0.00 59.00 3.44 3.21 0.00 60.00 3.44 3.21 0.00 61.00 3.44 3.21 0.00 62.00 3.44 3.21 0.00 63.00 3.44 3.21 0.00 64.00 3.44 3.21 0.00 65.00 3.44 3.21 0.00 66.00 3.44 3.21 0.00 67.00 3.44 3.21 0.00 68.00 3.44 3.21 0.00 69.00 3.44 3.21 0.00 70.00 3.44 3.21 0.00 71.00 3.44 3.21 0.00 72.00 3.44 3.21 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 8HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment EX 1-I: Runoff = 0.78 cfs @ 12.07 hrs, Volume= 0.058 af, Depth= 3.21" Routed to Reach 4R : 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 2-Year Rainfall=3.44" Area (sf) CN Description 9,508 98 Paved roads w/curbs & sewers, HSG C 9,508 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.3 100 0.0140 1.24 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.44" 0.3 49 0.0180 2.72 Shallow Concentrated Flow, Paved Kv= 20.3 fps 1.6 149 Total Subcatchment EX 1-I: Runoff Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 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 NOAA 24-hr D 2-Year Rainfall=3.44" Runoff Area=9,508 sf Runoff Volume=0.058 af Runoff Depth=3.21" Flow Length=149' Tc=1.6 min CN=98 0.78 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.