complete drainage report rev 9

Pre-Developed Total Annual Recharge Volume Post-Development Total Annual Recharge Volume Post-Development Annual Recharge Deficit Aboveground Infiltration Basin 2 Pervious Pavement 3 Pervious Pavement 4 Pervious Pavement 5 Pervious Pavement 6 Aboveground Infiltration Basin 7 Pervious Pavement 8 Pervious Pavement 9 Aboveground Infiltration Basin 10 Pervious Pavement 11 Pervious Pavement 12 Total Annual Recharge Volume Provided 1,063,036 CF 441,904 CF 621,132 CF 96,727 CF 20,254 CF 128,382 CF 118,298 CF 14,828 CF 135,505 CF 112,832 CF 53,990 CF 119,397 CF 189,645 CF 8,305 CF 1,440,067 CF

Annual Groundwater Recharge Analysis (based on GSR-32) New Jersey Groundwater Recharge Spreadsheet Select Township ↓ Version 2.0 November 2003 ESSEX CO., WEST ORANGE TOWN Average Annual P (in) 49.0 Project Name: West Essex Highlands Climatic Factor Description: West Orange, New Jersey 1.67 Analysis Date: Pre-Developed Conditions 05/31/24 Post-Developed Conditions Soil Annual Recharge (in) TR-55 Land Cover Soil Annual Recharge (in) Open space Adrian 0.0 Woods Adrian 0.0 6.27 Open space Adrian 0.0 - 3.05 Impervious areas Adrian 0.0 0.16 Woods Hasbrouck - 3 0.08 Open space Hasbrouck 0.0 4 0.02 Open space - 1,070 4 0.08 Impervious areas Hasbrouck 0.0 5 1.62 Woods - 90,995 5 1.14 Open space Haledon 14.7 60,987 6 0.81 7 16.31 14.9 43,952 6 0.5 Impervious areas Haledon 0.0 - 15.7 927,019 7 7.02 Open space Boonton 14.9 380,916 8 9 - 8 10.1 Impervious areas Boonton 0.0 - 9 10 0 11 0 - - 10 Woods - - 11 Impervious areas 12 0 Abbottstown - - 12 0 Brush 13 Brush Abbottstown - - 13 0 0 Brush Abbottstown - - 14 15 0 Brush Abbottstown Total = 28.2 Total Annual Recharge (in) Total Annual Recharge (cu-ft) Land Segment Area (acres) TR-55 Land Cover 1 0.66 2 8.66 3 Annual Recharge (cu.ft) Land Segment Area (acres) - 1 - 2 0.0 - Haledon 14.7 Haledon 15.5 Open space Boonton Woods Boonton 0 brush Adelphia - 0 brush Adelphia - brush Adelphia Brush Abbottstown Brush 0 14 10.4 Procedure to fill the Pre-Development and Post-Development Conditions Tables For each land segment, first enter the area, then select TR-55 Land Cover, then select Soil. Start from the top of the table Impervious areas - - - - - - - Abbottstown - - Brush Abbottstown - - 0 Brush Abbottstown - - 15 0 Brush Abbottstown Total = 28.2 Total Annual Recharge (in) Total Annual Recharge (cu.ft) Boonton Annual Recharge Requirements Calculation ↓ 1,063,036 Annual Recharge (cu.ft) 4.3 441,904 100% Total Impervious Area (sq.ft) 598,079 621,132 (cubic feet) % of Pre-Developed Annual Recharge to Preserve = Post-Development Annual Recharge Deficit= and proceed downward. Don't leave blank rows (with A=0) in between your segment entries. Rows with A=0 will not be Recharge Efficiency Parameters Calculations (area

elopment Annual Recharge Deficit= and proceed downward. Don't leave blank rows (with A=0) in between your segment entries. Rows with A=0 will not be Recharge Efficiency Parameters Calculations (area averages) displayed or used in calculations. For impervious areas outside of standard lots select "Impervious Areas" as the Land Cover. RWC= #N/A (in) DRWC= #N/A (in) Soil type for impervious areas are only required if an infiltration facility will be built within these areas. ERWC = #N/A (in) EDRWC= #N/A (in)

Project Name West Essex Highlands Description West Orange, Essex County Recharge BMP Input Parameters Parameter BMP Area BMP Effective Depth, this is the design variable Upper level of the BMP surface (negative if above ground) Depth of lower surface of BMP, must be>=dBMPu Post-development Land Segment Location of BMP , Symbol Analysis Date 05/31/24 BMP or LID Type Aboveground Basin 2 Root Zone Water capacity Calculated Parameters Value Unit ABMP 26023.0 sq.ft dBMP 4.2 in dBMPu 37.8 in dEXC 42.0 in SegBMP 0 Parameter Empty Portion of RWC under Post-D Natural Recharge ERWC Modified to consider dEXC Empty Portion of RWC under Infilt. BMP Symbol Value Unit Recharge Design Parameters Parameter Symbol Value Unit Qdesign 3.05 in Pdesign 3.28 in ERWC 0.39 in Inches of Runoff to capture EDRWC 0.00 in Inches of Rainfall to capture RERWC 0.00 in Recharge Provided Avg. over Imp. Area 38.5 in Runoff Captured Avg. over imp. Area 38.5 in unitless Input Zero if Location is distributed or undetermined BMP Calculated Size Parameters ABMP/Aimp BMP Volume Aratio VBMP CALCULATION CHECK MESSAGES 0.86 unitless 9,108 cu.ft Parameters from Annual Recharge Worksheet System Performance Calculated Parameters Post-D Deficit Recharge (or desired recharge volume) Vdef Annual BMP Recharge Volume Post-D Impervious Area (or target Impervious Area) Aimp 30,173 sq.ft Root Zone Water Capacity RWC 2.37 in RWC Modified to consider dEXC DRWC 0.00 in Climatic Factor C-factor 1.67 no units Average Annual P Pavg 49.0 in 621,132 cu.ft Avg BMP Recharge Efficiency %Rainfall became Runoff %Runoff Infiltrated %Runoff Recharged %Rainfall Recharged Volume Balance-> Solve Problem to satisfy Annual Recharge dBMP Check---> OK dEXC Check---> OK 96,727 cu.ft 100.0% 78.5% 100.0% 4.9% 3.9% BMP Location---> Location is selected as distributed or undetermined Represents % Infiltration OTHER NOTES Recharged % Pdesign is accurate only after BMP dimensions are updated to make rech volume= deficit volume. The portion % of BMP infiltration prior to filling and the area occupied by BMP are ignored in these calculations. Results are % sensetive to dBMP, make sure dBMP selected is small enough for BMP to empty in less than 3 days. For land % Segment Location of BMP if you select "impervious areas" RWC will be minimal but not zero

sensetive to dBMP, make sure dBMP selected is small enough for BMP to empty in less than 3 days. For land % Segment Location of BMP if you select "impervious areas" RWC will be minimal but not zero as determined by Recharge Requirement dr in 12.1 the soil type and a shallow root zone for this Land Cover allowing consideration of lateral flow and other losses. over Imp. Area 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.

Project Name West Essex Highlands Description West Orange, Essex County Recharge BMP Input Parameters Parameter BMP Area BMP Effective Depth, this is the design variable Upper level of the BMP surface (negative if above ground) Depth of lower surface of BMP, must be>=dBMPu Post-development Land Segment Location of BMP , Symbol Analysis Date 05/31/24 BMP or LID Type Pervious Pavement 3 Root Zone Water capacity Calculated Parameters Value Unit ABMP 5227.0 sq.ft dBMP 2.6 in dBMPu 23.4 in dEXC 26.0 in SegBMP 0 Parameter Empty Portion of RWC under Post-D Natural Recharge ERWC Modified to consider dEXC Empty Portion of RWC under Infilt. BMP Symbol Value Unit Recharge Design Parameters Parameter Symbol Value Unit Qdesign 2.19 in Pdesign 2.42 in ERWC 0.39 in Inches of Runoff to capture EDRWC 0.03 in Inches of Rainfall to capture RERWC 0.03 in Recharge Provided Avg. over Imp. Area 35.6 in Runoff Captured Avg. over imp. Area 37.3 in unitless Input Zero if Location is distributed or undetermined BMP Calculated Size Parameters ABMP/Aimp BMP Volume Aratio VBMP CALCULATION CHECK MESSAGES 0.77 unitless 1,150 cu.ft Parameters from Annual Recharge Worksheet System Performance Calculated Parameters Post-D Deficit Recharge (or desired recharge volume) Vdef Annual BMP Recharge Volume 20,254 cu.ft Post-D Impervious Area (or target Impervious Area) Aimp 6,824 sq.ft Avg BMP Recharge Efficiency 95.5% Root Zone Water Capacity RWC 2.37 in RWC Modified to consider dEXC DRWC 0.21 in Climatic Factor C-factor 1.67 no units Average Annual P Pavg 49.0 in 621,132 cu.ft %Rainfall became Runoff %Runoff Infiltrated %Runoff Recharged %Rainfall Recharged 78.5% 96.9% 1.0% 0.8% Volume Balance-> Solve Problem to satisfy Annual Recharge dBMP Check---> OK dEXC Check---> OK BMP Location---> Location is selected as distributed or undetermined Represents % Infiltration OTHER NOTES Recharged % Pdesign is accurate only after BMP dimensions are updated to make rech volume= deficit volume. The portion % of BMP infiltration prior to filling and the area occupied by BMP are ignored in these calculations. Results are % sensetive to dBMP, make sure dBMP selected is small enough for BMP to empty in less than 3 days. For land % Segment Location of BMP if you select "impervious areas" RWC will be minimal but not zero as

ensetive to dBMP, make sure dBMP selected is small enough for BMP to empty in less than 3 days. For land % Segment Location of BMP if you select "impervious areas" RWC will be minimal but not zero as determined by Recharge Requirement dr in 12.1 the soil type and a shallow root zone for this Land Cover allowing consideration of lateral flow and other losses. over Imp. Area 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.

Project Name West Essex Highlands Description West Orange, Essex County Recharge BMP Input Parameters Parameter BMP Area BMP Effective Depth, this is the design variable Upper level of the BMP surface (negative if above ground) Depth of lower surface of BMP, must be>=dBMPu Post-development Land Segment Location of BMP , Symbol Analysis Date 05/31/24 BMP or LID Type Pervious Pavement 4 Root Zone Water capacity Calculated Parameters Value Unit ABMP 12200.0 sq.ft dBMP 6.0 in dBMPu 28.9 in dEXC 34.9 in SegBMP 0 Parameter Empty Portion of RWC under Post-D Natural Recharge ERWC Modified to consider dEXC Empty Portion of RWC under Infilt. BMP Symbol Value Unit Recharge Design Parameters Parameter Symbol Value Unit Qdesign 1.84 in Pdesign 2.07 in ERWC 0.39 in Inches of Runoff to capture EDRWC 0.00 in Inches of Rainfall to capture RERWC 0.00 in Recharge Provided Avg. over Imp. Area 36.6 in Runoff Captured Avg. over imp. Area 36.6 in unitless Input Zero if Location is distributed or undetermined BMP Calculated Size Parameters ABMP/Aimp BMP Volume Aratio VBMP CALCULATION CHECK MESSAGES 0.29 unitless 6,100 cu.ft Parameters from Annual Recharge Worksheet System Performance Calculated Parameters Post-D Deficit Recharge (or desired recharge volume) Vdef Annual BMP Recharge Volume 128,382 cu.ft Post-D Impervious Area (or target Impervious Area) Aimp 42,085 sq.ft Avg BMP Recharge Efficiency 100.0% Root Zone Water Capacity RWC 2.37 in RWC Modified to consider dEXC DRWC 0.00 in Climatic Factor C-factor 1.67 no units Average Annual P Pavg 49.0 in 621,132 cu.ft %Rainfall became Runoff %Runoff Infiltrated %Runoff Recharged %Rainfall Recharged 78.5% 95.2% 6.5% 5.1% Volume Balance-> Solve Problem to satisfy Annual Recharge dBMP Check---> OK dEXC Check---> OK BMP Location---> Location is selected as distributed or undetermined Represents % Infiltration OTHER NOTES Recharged % Pdesign is accurate only after BMP dimensions are updated to make rech volume= deficit volume. The portion % of BMP infiltration prior to filling and the area occupied by BMP are ignored in these calculations. Results are % sensetive to dBMP, make sure dBMP selected is small enough for BMP to empty in less than 3 days. For land % Segment Location of BMP if you select "impervious areas" RWC will be minimal but not

re % sensetive to dBMP, make sure dBMP selected is small enough for BMP to empty in less than 3 days. For land % Segment Location of BMP if you select "impervious areas" RWC will be minimal but not zero as determined by Recharge Requirement dr in 12.1 the soil type and a shallow root zone for this Land Cover allowing consideration of lateral flow and other losses. over Imp. Area 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.

Project Name West Essex Highlands Description West Orange, Essex County Recharge BMP Input Parameters Parameter BMP Area BMP Effective Depth, this is the design variable Upper level of the BMP surface (negative if above ground) Depth of lower surface of BMP, must be>=dBMPu Post-development Land Segment Location of BMP , Symbol Analysis Date 05/31/24 BMP or LID Type Pervious Pavement 5 Root Zone Water capacity Calculated Parameters Value Unit ABMP 14800.0 sq.ft dBMP 3.0 in dBMPu 60.6 in dEXC 63.6 in SegBMP 0 Parameter Empty Portion of RWC under Post-D Natural Recharge ERWC Modified to consider dEXC Empty Portion of RWC under Infilt. BMP Symbol Value Unit Recharge Design Parameters Parameter Symbol Value Unit Qdesign 1.06 in Pdesign 1.27 in ERWC 0.39 in Inches of Runoff to capture EDRWC 0.00 in Inches of Rainfall to capture RERWC 0.00 in Recharge Provided Avg. over Imp. Area 32.9 in Runoff Captured Avg. over imp. Area 32.9 in unitless Input Zero if Location is distributed or undetermined BMP Calculated Size Parameters ABMP/Aimp BMP Volume Aratio VBMP CALCULATION CHECK MESSAGES 0.34 unitless 3,700 cu.ft Parameters from Annual Recharge Worksheet System Performance Calculated Parameters Post-D Deficit Recharge (or desired recharge volume) Vdef Annual BMP Recharge Volume 118,298 cu.ft Post-D Impervious Area (or target Impervious Area) Aimp 43,200 sq.ft Avg BMP Recharge Efficiency 100.0% Root Zone Water Capacity RWC 2.37 in RWC Modified to consider dEXC DRWC 0.00 in Climatic Factor C-factor 1.67 no units Average Annual P Pavg 49.0 in 621,132 cu.ft %Rainfall became Runoff %Runoff Infiltrated %Runoff Recharged %Rainfall Recharged 78.5% 85.4% 6.0% 4.7% Volume Balance-> Solve Problem to satisfy Annual Recharge dBMP Check---> OK dEXC Check---> OK BMP Location---> Location is selected as distributed or undetermined Represents % Infiltration OTHER NOTES Recharged % Pdesign is accurate only after BMP dimensions are updated to make rech volume= deficit volume. The portion % of BMP infiltration prior to filling and the area occupied by BMP are ignored in these calculations. Results are % sensetive to dBMP, make sure dBMP selected is small enough for BMP to empty in less than 3 days. For land % Segment Location of BMP if you select "impervious areas" RWC will be minimal but not