1240815StormWaterManagementReportrcd 3 12 2026

New Jersey Groundwater Annual Groundwater Recharge Analysis (based on GSR-32) Project Name: 1240815 Average Recharge Select Township ↓ Annual P Climatic Description: Pleasant Valley Way, W Orange Spreadsheet Version 2.0 (in) Factor November 2003 ESSEX CO., WEST ORANGE TOWN 49.0 1.67 Analysis Date: 12/04/25 Pre-Developed Conditions Post-Developed Conditions Annual Annual Annual Annual Land Area Land Area TR-55 Land Cover Soil Recharge Recharge TR-55 Land Cover Soil Recharge Recharge Segment (acres) Segment (acres) (in) (cu.ft) (in) (cu.ft) 1 0.117 Open space Boonton 14.9 6,349

(in) (cu.ft) 1 0.117 Open space Boonton 14.9 6,349 1 0.115 Open space Boonton 14.9 6,240 2 0.256 Impervious areas Boonton 0.0 - 2 0.258 Impervious areas Boonton 0.0 - 3 Woods-grass combination Woodstown - - 3 Open space Keyport - - 4 Open space Keyport - - 4 Open space Woodstown - - 5 Gravel, dirt Keyport - - 5 0.000 brush Adelphia - - 6 Woods-grass combination Keyport - - 6 0.000 Brush Adelphia - - 7 0.000 brush Adrian - - 7 0.000 Brush Adelphia - - 8 0.000 brush Adelphia - - 8 0.000 Brush Adelphia Variant - - 9 0.000 brush Adelphia - - 9 0.000 Brush Adelphia - - 10 0.000 brush Adelphia - -

ush Adelphia - - 10 0.000 brush Adelphia - - 10 0.000 Brush Abbottstown - - 11 0.000 Brush Abbottstown - - 11 0.000 Brush Abbottstown - - 12 0.000 Brush Abbottstown - - 12 0.000 Brush Abbottstown - - 13 0.000 Brush Abbottstown - - 13 0.000 Brush Abbottstown - - 14 0.000 Brush Abbottstown - - 14 0.000 Brush Abbottstown - - 15 0.000 Brush Abbottstown - - 15 0.000 Brush Abbottstown - - Total Total Total Total Annual Annual Annual Annual Total = 0.4 Recharge Recharge Total = 0.4 Recharge Recharge (in) (cu-ft)

Recharge Recharge (in) (cu-ft) (in) (cu.ft) 4.7 6,349 Annual Recharge Requirements Calculation ↓ 4.6 6,240 Total Impervious Procedure to fill the Pre-Development and Post-Development Conditions Tables % of Pre-Developed Annual Recharge to Preserve = 100% Area (sq.ft) 11,238 Post-Development Annual Recharge Deficit= 109 (cubic feet) For each land segment, first enter the area, then select TR-55 Land Cover, then select Soil. Start from the top of the table 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= 3.44 (in) DRWC= 0.72 (in) Soil type for impervious areas are only required if an infiltration facility will be built within these areas. ERWC = 0.57 (in) EDRWC= 0.12 (in)

ERWC = 0.57 (in) EDRWC= 0.12 (in) 143