complete drainage report rev 9

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)