1240815StormWaterManagementReportrcd 3 12 2026

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VII Vil GROUNDWATER RECHARGE GROUNDWATER RECHARGE 141 141

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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

Project Name Description Analysis Date BMP or LID Type 1240815 Pleasant Valley Way, W Orange 12/04/25 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 Empty Portion Inches of Runoff BMP Area ABMP 160.0 sq.ft of RWC under Post-D ERWC 0.61 in Qdesign 0.05 in to capture Natural Recharge BMP Effective Depth, ERWC Modified to Inches of Rainfall dBMP 0.2 in EDRWC 0.18 in Pdesign 0.10 in this is the design variable consider dEXC to capture Upper level of the BMP Empty Portion surface (negative if above Recharge Provided dBMPu 1.0 in of RWC under Infilt. RERWC 0.14 in

d dBMPu 1.0 in of RWC under Infilt. RERWC 0.14 in 0.1 in ground) Avg. over Imp. Area BMP Depth of lower surface of Runoff Captured dEXC 40.8 in 0.3 in BMP, must be>=dBMPu Avg. over imp. Area Post-development Land Segment Location of BMP , SegBMP 1 unitless Input Zero if Location is distributed or undetermined BMP Calculated Size Parameters CALCULATION CHECK MESSAGES ABMP/Aimp Aratio 0.01 unitless Volume Balance-> OK BMP Volume VBMP 3 cu.ft dBMP Check---> OK Parameters from Annual Recharge Worksheet System Performance Calculated Parameters dEXC Check---> OK Post-D Deficit Recharge Annual BMP Recharge (or desired recharge Vdef 109 cu.ft 109 cu.ft Volume volume) BMP Location---> OK