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 201HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Pond 12P: Subsurface Infiltration Basin - Chamber Wizard Field A Chamber Model = ADS_StormTech SC-740 +Cap (ADS StormTech® SC-740 with cap length) Effective Size= 44.6"W x 30.0"H => 6.45 sf x 7.12'L = 45.9 cf Overall Size= 51.0"W x 30.0"H x 7.56'L with 0.44' Overlap 51.0" Wide + 6.0" Spacing = 57.0" C-C Row Spacing 9 Chambers/Row x 7.12' Long +0.81' Cap Length x 2 = 65.70' Row Length +12.0" End Stone x 2 = 67.70' Base Length 8 Rows x 51.0" Wide + 6.0" Spacing x 7 + 12.0" Side Stone x 2 = 39.50' Base Width 6.0" Stone Base + 30.0" Chamber Height + 6.0" Stone Cover = 3.50' Field Height 72 Chambers x 45.9 cf = 3,307.7 cf Chamber Storage 9,359.1 cf Field - 3,307.7 cf Chambers = 6,051.4 cf Stone x 40.0% Voids = 2,420.6 cf Stone Storage Chamber Storage + Stone Storage = 5,728.2 cf = 0.132 af Overall Storage Efficiency = 61.2% Overall System Size = 67.70' x 39.50' x 3.50' 72 Chambers 346.6 cy Field 224.1 cy Stone 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 202HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Pond 12P: Subsurface Infiltration Basin Inflow Outflow Discarded Primary Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 4 3 2 1 0 Inflow Area=0.687 ac Peak Elev=624.47' Storage=0.119 af 3.73 cfs 1.73 cfs 0.14 cfs 1.60 cfs Pond 12P: Subsurface Infiltration Basin Surface Storage Stage-Area-Storage Storage (acre-feet) 0.130.120.110.10.090.080.070.060.050.040.030.020.010 Surface/Horizontal/Wetted Area (acres) 0.060.0550.050.0450.040.0350.030.0250.020.0150.010.0050 Elevation (feet) 625 624 623 622 Field A ADS_StormTech SC-740 +Cap 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 203HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Hydrograph for Pond 12P: Subsurface Infiltration Basin Time (hours) Inflow (cfs) Storage (acre-feet) Elevation (feet) Outflow (cfs) Discarded (cfs) Primary (cfs) 0.00 0.00 0.000 621.50 0.00 0.00 0.00 2.50 0.02 0.000 621.51 0.02 0.02 0.00 5.00 0.03 0.000 621.51 0.03 0.03 0.00 7.50 0.05 0.001 621.53 0.05 0.05 0.00 10.00 0.15 0.006 621.76 0.07 0.07 0.00 12.50 1.03 0.113 624.27 1.58 0.13 1.45 15.00 0.18 0.073 623.25 0.24 0.11 0.13 17.50 0.11 0.058 622.93 0.19 0.10 0.09 20.00 0.09 0.045 622.65 0.13 0.09 0.04 22.50 0.07 0.039 622.54 0.09 0.09 0.00 25.00 0.00 0.030 622.36 0.08 0.08 0.00 27.50 0.00 0.014 622.03 0.08 0.08 0.00 30.00 0.00 0.000 621.51 0.02 0.02 0.00 32.50 0.00 0.000 621.50 0.00 0.00 0.00 35.00 0.00 0.000 621.50 0.00 0.00 0.00 37.50 0.00 0.000 621.50 0.00 0.00 0.00 40.00 0.00 0.000 621.50 0.00 0.00 0.00 42.50 0.00 0.000 621.50 0.00 0.00 0.00 45.00 0.00 0.000 621.50 0.00 0.00 0.00 47.50 0.00 0.000 621.50 0.00 0.00 0.00 50.00 0.00 0.000 621.50 0.00 0.00 0.00 52.50 0.00 0.000 621.50 0.00 0.00 0.00 55.00 0.00 0.000 621.50 0.00 0.00 0.00 57.50 0.00 0.000 621.50 0.00 0.00 0.00 60.00 0.00 0.000 621.50 0.00 0.00 0.00 62.50 0.00 0.000 621.50 0.00 0.00 0.00 65.00 0.00 0.000 621.50 0.00 0.00 0.00 67.50 0.00 0.000 621.50 0.00 0.00 0.00 70.00 0.00 0.000 621.50 0.00 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 204HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 12P: Subsurface Infiltration Basin Elevation (feet) Surface (acres) Storage (acre-feet) 621.50 0.061 0.000 621.55 0.061 0.001 621.60 0.061 0.002 621.65 0.061 0.004 621.70 0.061 0.005 621.75 0.061 0.006 621.80 0.061 0.007 621.85 0.061 0.009 621.90 0.061 0.010 621.95 0.061 0.011 622.00 0.061 0.012 622.05 0.061 0.015 622.10 0.061 0.017 622.15 0.061 0.020 622.20 0.061 0.022 622.25 0.061 0.025 622.30 0.061 0.027 622.35 0.061 0.030 622.40 0.061 0.032 622.45 0.061 0.035 622.50 0.061 0.037 622.55 0.061 0.040 622.60 0.061 0.042 622.65 0.061 0.045 622.70 0.061 0.047 622.75 0.061 0.050 622.80 0.061 0.052 622.85 0.061 0.054 622.90 0.061 0.057 622.95 0.061 0.059 623.00 0.061 0.062 623.05 0.061 0.064 623.10 0.061 0.066 623.15 0.061 0.068 623.20 0.061 0.071 623.25 0.061 0.073 623.30 0.061 0.075 623.35 0.061 0.077 623.40 0.061 0.080 623.45 0.061 0.082 623.50 0.061 0.084 623.55 0.061 0.086 623.60 0.061 0.088 623.65 0.061 0.090 623.70 0.061 0.092 623.75 0.061 0.094 623.80 0.061 0.096 623.85 0.061 0.098 623.90 0.061 0.100 623.95 0.061 0.102 624.00 0.061 0.104 624.05 0.061 0.106 624.10 0.061 0.108 624.15 0.061 0.109 624.20 0.061 0.111 624.25 0.061 0.113 624.30 0.061 0.114 624.35 0.061 0.115 Elevation (feet) Surface (acres) Storage (acre-feet) 624.40 0.061 0.117 624.45 0.061 0.118 624.50 0.061 0.119 624.55 0.061 0.120 624.60 0.061 0.122 624.65 0.061 0.123 624.70 0.061 0.124 624.75 0.061 0.125 624.80 0.061 0.127 624.85 0.061 0.128 624.90 0.061 0.129 624.95 0.061 0.130 625.00 0.061 0.132 This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NJ DEP 2-hr WQ Rainfall=1.25"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 205HydroCAD® 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=1.03"Subcatchment 1S: 2BP-I Flow Length=75' Slope=0.0140 '/' Tc=1.1 min CN=98 Runoff=0.21 cfs 0.006 af Runoff Area=9,508 sf 100.00% Impervious Runoff Depth=1.03"Subcatchment EX 1-I: Flow Length=149' Tc=1.6 min CN=98 Runoff=0.68 cfs 0.019 af Runoff Area=34,310 sf 0.00% Impervious Runoff Depth=0.09"Subcatchment EX 1-P: Flow Length=233' Tc=10.4 min CN=75 Runoff=0.13 cfs 0.006 af Runoff Area=33,427 sf 0.00% Impervious Runoff Depth=0.07"Subcatchment EX 2-P: Flow Length=251' Tc=10.1 min CN=74 Runoff=0.10 cfs 0.005 af Runoff Area=12,817 sf 0.00% Impervious Runoff Depth=0.10"Subcatchment EX 3 - P: Flow Length=109' Tc=7.8 min CN=76 Runoff=0.06 cfs 0.002 af Runoff Area=2,919 sf 100.00% Impervious Runoff Depth=1.03"Subcatchment PR 1A-I: Flow Length=149' Tc=1.6 min CN=98 Runoff=0.21 cfs 0.006 af Runoff Area=21,722 sf 0.00% Impervious Runoff Depth=0.07"Subcatchment PR 1A-P: Flow Length=395' Tc=10.5 min CN=74 Runoff=0.06 cfs 0.003 af Runoff Area=6,622 sf 0.00% Impervious Runoff Depth=0.45"Subcatchment PR 1B-P: Tc=6.0 min CN=89 Runoff=0.21 cfs 0.006 af Runoff Area=6,039 sf 0.00% Impervious Runoff Depth=0.07"Subcatchment PR 2A-P: Flow Length=81' Slope=0.3000 '/' Tc=2.7 min CN=74 Runoff=0.02 cfs 0.001 af Runoff Area=5,659 sf 100.00% Impervious Runoff Depth=1.03"Subcatchment PR 2C-I: Flow Length=86' Slope=0.0230 '/' Tc=1.0 min CN=98 Runoff=0.41 cfs 0.011 af Runoff Area=21,408 sf 0.00% Impervious Runoff Depth=0.07"Subcatchment PR 2C-P: Flow Length=100' Slope=0.0200 '/' Tc=9.4 min CN=74 Runoff=0.07 cfs 0.003 af Runoff Area=10,406 sf 0.00% Impervious Runoff Depth=0.07"Subcatchment PR 3 - P: Flow Length=109' Tc=7.8 min CN=74 Runoff=0.03 cfs 0.001 af Runoff Area=8,642 sf 100.00% Impervious Runoff Depth=1.03"Subcatchment PR-2B-I: Flow Length=75' Slope=0.0140 '/' Tc=1.1 min CN=98 Runoff=0.62 cfs 0.017 af Runoff Area=1,446 sf 0.00% Impervious Runoff Depth=0.07"Subcatchment PR-2B-P: Flow Length=114' Tc=8.0 min CN=74 Runoff=0.00 cfs 0.000 af Inflow=0.67 cfs 0.025 afReach

in CN=98 Runoff=0.62 cfs 0.017 af Runoff Area=1,446 sf 0.00% Impervious Runoff Depth=0.07"Subcatchment PR-2B-P: Flow Length=114' Tc=8.0 min CN=74 Runoff=0.00 cfs 0.000 af Inflow=0.67 cfs 0.025 afReach 1R: TOP Outflow=0.67 cfs 0.025 af Inflow=0.67 cfs 0.029 afReach 2R: CHANNEL Outflow=0.67 cfs 0.029 af Inflow=0.67 cfs 0.032 afReach 3R: TOTAL Outflow=0.67 cfs 0.032 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.

NJ DEP 2-hr WQ Rainfall=1.25"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 206HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Inflow=0.67 cfs 0.025 afReach 4R: Outflow=0.67 cfs 0.025 af Inflow=0.41 cfs 0.014 afReach 8R: (new Reach) Outflow=0.41 cfs 0.014 af Avg. Flow Depth=0.06' Max Vel=5.06 fps Inflow=0.21 cfs 0.009 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=0.20 cfs 0.009 af Inflow=0.20 cfs 0.012 afReach DP2: CHANNEL Outflow=0.20 cfs 0.012 af Inflow=0.21 cfs 0.014 afReach DP3: TOTAL Outflow=0.21 cfs 0.014 af Inflow=0.21 cfs 0.009 afReach EX 1: Outflow=0.21 cfs 0.009 af Peak Elev=624.45' Storage=0.002 af Inflow=0.21 cfs 0.006 afPond 2P: Pervious Pavers Outflow=0.08 cfs 0.006 af Peak Elev=0.16' Inflow=0.21 cfs 0.009 afPond 10P: (new Pond) Outflow=0.21 cfs 0.009 af Peak Elev=608.15' Storage=0.013 af Inflow=0.62 cfs 0.017 afPond 11P: Existing Drywell System Discarded=0.03 cfs 0.015 af Primary=0.04 cfs 0.002 af Outflow=0.07 cfs 0.017 af Peak Elev=622.00' Storage=0.012 af Inflow=0.62 cfs 0.020 afPond 12P: Subsurface Infiltration Basin Discarded=0.07 cfs 0.020 af Primary=0.00 cfs 0.000 af Outflow=0.07 cfs 0.020 af Total Runoff Area = 4.082 ac Runoff Volume = 0.086 af Average Runoff Depth = 0.25" 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.

NJ DEP 2-hr WQ Rainfall=1.25"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 207HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment 1S: 2BP-I Runoff = 0.21 cfs @ 1.03 hrs, Volume= 0.006 af, Depth= 1.03" 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 NJ DEP 2-hr WQ Rainfall=1.25" 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) 0.23 0.22 0.21 0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 NJ DEP 2-hr WQ Rainfall=1.25" Runoff Area=2,878 sf Runoff Volume=0.006 af Runoff Depth=1.03" Flow Length=75' Slope=0.0140 '/' Tc=1.1 min CN=98 0.21 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.

NJ DEP 2-hr WQ Rainfall=1.25"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 208HydroCAD® 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 0.63 0.43 0.20 2.00 1.25 1.03 0.01 3.00 1.25 1.03 0.00 4.00 1.25 1.03 0.00 5.00 1.25 1.03 0.00 6.00 1.25 1.03 0.00 7.00 1.25 1.03 0.00 8.00 1.25 1.03 0.00 9.00 1.25 1.03 0.00 10.00 1.25 1.03 0.00 11.00 1.25 1.03 0.00 12.00 1.25 1.03 0.00 13.00 1.25 1.03 0.00 14.00 1.25 1.03 0.00 15.00 1.25 1.03 0.00 16.00 1.25 1.03 0.00 17.00 1.25 1.03 0.00 18.00 1.25 1.03 0.00 19.00 1.25 1.03 0.00 20.00 1.25 1.03 0.00 21.00 1.25 1.03 0.00 22.00 1.25 1.03 0.00 23.00 1.25 1.03 0.00 24.00 1.25 1.03 0.00 25.00 1.25 1.03 0.00 26.00 1.25 1.03 0.00 27.00 1.25 1.03 0.00 28.00 1.25 1.03 0.00 29.00 1.25 1.03 0.00 30.00 1.25 1.03 0.00 31.00 1.25 1.03 0.00 32.00 1.25 1.03 0.00 33.00 1.25 1.03 0.00 34.00 1.25 1.03 0.00 35.00 1.25 1.03 0.00 36.00 1.25 1.03 0.00 37.00 1.25 1.03 0.00 38.00 1.25 1.03 0.00 39.00 1.25 1.03 0.00 40.00 1.25 1.03 0.00 41.00 1.25 1.03 0.00 42.00 1.25 1.03 0.00 43.00 1.25 1.03 0.00 44.00 1.25 1.03 0.00 45.00 1.25 1.03 0.00 46.00 1.25 1.03 0.00 47.00 1.25 1.03 0.00 48.00 1.25 1.03 0.00 49.00 1.25 1.03 0.00 50.00 1.25 1.03 0.00 51.00 1.25 1.03 0.00 52.00 1.25 1.03 0.00 53.00 1.25 1.03 0.00 54.00 1.25 1.03 0.00 55.00 1.25 1.03 0.00 56.00 1.25 1.03 0.00 57.00 1.25 1.03 0.00 Time (hours) Precip. (inches) Excess (inches) Runoff (cfs) 58.00 1.25 1.03 0.00 59.00 1.25 1.03 0.00 60.00 1.25 1.03 0.00 61.00 1.25 1.03 0.00 62.00 1.25 1.03 0.00 63.00 1.25 1.03 0.00 64.00 1.25 1.03 0.00 65.00 1.25 1.03 0.00 66.00 1.25 1.03 0.00 67.00 1.25 1.03 0.00 68.00 1.25 1.03 0.00 69.00 1.25 1.03 0.00 70.00 1.25 1.03 0.00 71.00 1.25 1.03 0.00 72.00 1.25 1.03 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.

NJ DEP 2-hr WQ Rainfall=1.25"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 209HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment EX 1-I: Runoff = 0.68 cfs @ 1.03 hrs, Volume= 0.019 af, Depth= 1.03" 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 NJ DEP 2-hr WQ Rainfall=1.25" 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) 0.75 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 NJ DEP 2-hr WQ Rainfall=1.25" Runoff Area=9,508 sf Runoff Volume=0.019 af Runoff Depth=1.03" Flow Length=149' Tc=1.6 min CN=98 0.68 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.