240916_40 ERW Stormwater Report FULL

NJ DEP 2-hr WQ Rainfall=1.25"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 268HydroCAD® 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.

NJ DEP 2-hr WQ Rainfall=1.25"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 269HydroCAD® 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) 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=0.687 ac Peak Elev=622.00' Storage=0.012 af 0.62 cfs 0.07 cfs 0.07 cfs 0.00 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.

NJ DEP 2-hr WQ Rainfall=1.25"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 270HydroCAD® 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 0.00 0.009 621.87 0.07 0.07 0.00 5.00 0.00 0.000 621.50 0.00 0.00 0.00 7.50 0.00 0.000 621.50 0.00 0.00 0.00 10.00 0.00 0.000 621.50 0.00 0.00 0.00 12.50 0.00 0.000 621.50 0.00 0.00 0.00 15.00 0.00 0.000 621.50 0.00 0.00 0.00 17.50 0.00 0.000 621.50 0.00 0.00 0.00 20.00 0.00 0.000 621.50 0.00 0.00 0.00 22.50 0.00 0.000 621.50 0.00 0.00 0.00 25.00 0.00 0.000 621.50 0.00 0.00 0.00 27.50 0.00 0.000 621.50 0.00 0.00 0.00 30.00 0.00 0.000 621.50 0.00 0.00 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.

NJ DEP 2-hr WQ Rainfall=1.25"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 271HydroCAD® 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.

Stormwater Management Report | September 16, 2024 Appendix #02 | Recharge Worksheet

Annual Groundwater Recharge Analysis (based on GSR-32) Project Name: Waymaker Select Township ↓ Average Annual P (in) Climatic Factor Description: Proposed Site Improvements ESSEX CO., WEST ORANGE TOWN 49.0 1.67 Analysis Date: 09/16/24 Land Segment Area (acres) TR-55 Land Cover Soil Annual Recharge (in) Annual Recharge (cu.ft) Land Segment Area (acres) TR-55 Land Cover Soil Annual Recharge (in) Annual Recharge (cu.ft) 1 0.22 Impervious areas Boonton 0.0 - 1 0.46 Impervious areas Boonton 0.0 - 2 1.76 Open space Boonton 14.9 95,500 2 1.48 Open space Boonton 14.9 80,307 3 0.09 Gravel, dirt Boonton 6.9 2,238 3 0.16 Gravel, dirt Boonton 6.9 3,979 4 Gravel, dirt Freehold - - 4 Open space Woodstown - - 5 Row Crop Woodstown - - 5 0 brush Adelphia - - 6 Impervious areas Woodstown - - 6 0 Brush Adelphia - - 7 Open space Woodstown - - 7 0 Brush Adelphia - - 8 0 brush Adelphia - - 8 0 Brush Adelphia Variant - - 9 0 brush Adelphia - - 9 0 Brush Adelphia - - 10 0 brush Adelphia - - 10 0 Brush Abbottstown - - 11 0 Brush Abbottstown - - 11 0 Brush Abbottstown - - 12 0 Brush Abbottstown - - 12 0 Brush Abbottstown - - 13 0 Brush Abbottstown - - 13 0 Brush Abbottstown - - 14 0 Brush Abbottstown - - 14 0 Brush Abbottstown - - 15 0 Brush Abbottstown - - 15 0 Brush Abbottstown - - Total = 2.1 Total Annual Recharge (in) Total Annual Recharge (cu-ft) Total = 2.1 Total Annual Recharge (in) Total Annual Recharge (cu.ft) 13.0 97,738 11.2 84,286 Procedure to fill the Pre-Development and Post-Development Conditions Tables % of Pre-Developed Annual Recharge to Preserve = 100% Total Impervious Area (sq.ft) 20,038 For each land segment, first enter the area, then select TR-55 Land Cover, then select Soil. Start from the top of the table Post-Development Annual Recharge Deficit= 13,453 (cubic feet) and proceed downward. Don't leave blank rows (with A=0) in between your segment entries. Rows with A=0 will not be displayed or used in calculations. For impervious areas outside of standard lots select "Impervious Areas" as the Land Cover. RWC= 3.58 (in) DRWC= 0.94 (in) Soil type for impervious areas are only required if an infiltration facility will be built within these areas. ERWC = 0.59 (in) EDRWC= 0.15 (in) Pre-Developed Conditions Post-Developed Conditions Warning: make total area equal to Pre-Developed Conditions Recharge Efficiency Parameters Calculations (area averages) Annual Recharge

RWC= 0.15 (in) Pre-Developed Conditions Post-Developed Conditions Warning: make total area equal to Pre-Developed Conditions Recharge Efficiency Parameters Calculations (area averages) Annual Recharge Requirements Calculation ↓ New Jersey Groundwater Recharge Spreadsheet Version 2.0 November 2003 This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

Project Name Description Analysis Date BMP or LID Type Recharge BMP Input Parameters Root Zone Water capacity Calculated Parameters Recharge Design Parameters Parameter Symbol Value Unit Parameter Symbol Value Unit Parameter Symbol Value Unit BMP Area ABMP 2674.0 sq.ft Empty Portion of RWC under Post-D Natural Recharge ERWC 0.61 in Inches of Runoff to capture Qdesign 1.84 in BMP Effective Depth, this is the design variable dBMP 7.2 in ERWC Modified to consider dEXC EDRWC 0.18 in Inches of Rainfall to capture Pdesign 2.07 in Upper level of the BMP surface (negative if above ground) dBMPu 0.0 in Empty Portion of RWC under Infilt. BMP RERWC 0.14 in Recharge Provided Avg. over Imp. Area 33.8 in Depth of lower surface of BMP, must be>=dBMPu dEXC 42.0 in Runoff Captured Avg. over imp. Area 36.5 in Post-development Land Segment Location of BMP , Input Zero if Location is distributed or undetermined SegBMP 2 unitless BMP Calculated Size Parameters CALCULATION CHECK MESSAGES ABMP/Aimp Aratio 0.24 unitless Volume Balance-> Solve Problem to satisfy Annual Recharge BMP Volume VBMP 1,604 cu.ft dBMP Check---> OK Parameters from Annual Recharge Worksheet System Performance Calculated Parameters dEXC Check---> OK Post-D Deficit Recharge (or desired recharge volume) Vdef 7,121 cu.ft Annual BMP Recharge Volume 31,922 cu.ft BMP Location---> OK Post-D Impervious Area (or target Impervious Area) Aimp 11,326 sq.ft Avg BMP Recharge Efficiency 92.7% Represents % Infiltration Recharged OTHER NOTES Root Zone Water Capacity RWC 3.69 in %Rainfall became Runoff 78.5% % Pdesign is accurate only after BMP dimensions are updated to make rech volume= deficit volume. The portion RWC Modified to consider dEXC DRWC 1.11 in %Runoff Infiltrated 94.9% % of BMP infiltration prior to filling and the area occupied by BMP are ignored in these calculations. Results are Climatic Factor C-factor 1.67 no units %Runoff Recharged 49.7% % sensetive to dBMP, make sure dBMP selected is small enough for BMP to empty in less than 3 days. For land Average Annual P Pavg 49.0 in %Rainfall Recharged 39.0% % Segment Location of BMP if you select "impervious areas" RWC will be minimal but not zero as determined by Recharge Requirement over Imp. Area dr 4.3 in the soil type and a shallow root zone for this Land Cover allowing consideration of lateral flow and other losses. How to solve for different recharge volumes:

rge Requirement over Imp. Area dr 4.3 in the soil type and a shallow root zone for this Land Cover allowing consideration of lateral flow and other losses. How to solve for different recharge volumes: By default the spreadsheet assigns the values of total deficit recharge volume "Vdef" and total proposed impervious area "Aimp" from the "Annual Recharge" sheet to "Vdef" and "Aimp" on this page. This allows solution for a single BMP to handle the entire recharge requirement assuming the runoff from entire impervious area is available to the BMP. To solve for a smaller BMP or a LID-IMP to recharge only part of the recharge requirement, set Vdef to your target value and Aimp to impervious area directly connected to your infiltration facility and then solve for ABMP or dBMP. To go back to the default configuration clik the "Default Vdef & Aimp" button. 09/16/24Waymaker Proposed Site Improvements Subsurface Infiltration Basin This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

Project Name Description Analysis Date BMP or LID Type Recharge BMP Input Parameters Root Zone Water capacity Calculated Parameters Recharge Design Parameters Parameter Symbol Value Unit Parameter Symbol Value Unit Parameter Symbol Value Unit BMP Area ABMP 874.0 sq.ft Empty Portion of RWC under Post-D Natural Recharge ERWC 0.61 in Inches of Runoff to capture Qdesign 1.84 in BMP Effective Depth, this is the design variable dBMP 6.6 in ERWC Modified to consider dEXC EDRWC 0.18 in Inches of Rainfall to capture Pdesign 2.07 in Upper level of the BMP surface (negative if above ground) dBMPu 0.0 in Empty Portion of RWC under Infilt. BMP RERWC 0.14 in Recharge Provided Avg. over Imp. Area 33.8 in Depth of lower surface of BMP, must be>=dBMPu dEXC 96.0 in Runoff Captured Avg. over imp. Area 36.5 in Post-development Land Segment Location of BMP , Input Zero if Location is distributed or undetermined SegBMP 2 unitless BMP Calculated Size Parameters CALCULATION CHECK MESSAGES ABMP/Aimp Aratio 0.10 unitless Volume Balance-> Solve Problem to satisfy Annual Recharge BMP Volume VBMP 481 cu.ft dBMP Check---> OK Parameters from Annual Recharge Worksheet System Performance Calculated Parameters dEXC Check---> OK Post-D Deficit Recharge (or desired recharge volume) Vdef 6,332 cu.ft Annual BMP Recharge Volume 10,434 cu.ft BMP Location---> OK Post-D Impervious Area (or target Impervious Area) Aimp 8,712 sq.ft Avg BMP Recharge Efficiency 92.7% Represents % Infiltration Recharged OTHER NOTES Root Zone Water Capacity RWC 3.69 in %Rainfall became Runoff 78.5% % Pdesign is accurate only after BMP dimensions are updated to make rech volume= deficit volume. The portion RWC Modified to consider dEXC DRWC 1.11 in %Runoff Infiltrated 40.3% % of BMP infiltration prior to filling and the area occupied by BMP are ignored in these calculations. Results are Climatic Factor C-factor 1.67 no units %Runoff Recharged 16.2% % sensetive to dBMP, make sure dBMP selected is small enough for BMP to empty in less than 3 days. For land Average Annual P Pavg 49.0 in %Rainfall Recharged 12.8% % Segment Location of BMP if you select "impervious areas" RWC will be minimal but not zero as determined by Recharge Requirement over Imp. Area dr 3.8 in the soil type and a shallow root zone for this Land Cover allowing consideration of lateral flow and other losses. Waymaker Proposed Site Improvements 09/16/24