JMA02P003 262 270 Main Street Development Stormwater Management Report

New Jersey Annual Groundwater Recharge Analysis (based on GSR-32) Project Name: JMA02P003.04 Groundwater Average Recharge Select Township ↓ Annual P Climatic Description: Stormwater Design Spreadsheet Version 2.0 (in) Factor November 2003 ESSEX CO., WEST ORANGE TOWN 49.0 1.67 Analysis Date: 04/22/26 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 0.69 Impervious areas Boonton 0.0 - 1 0.68

(in) (cu.ft) 1 0.69 Impervious areas Boonton 0.0 - 1 0.68 Impervious areas Boonton 0.0 - 2 0.01 Open space Boonton 14.9 543 2 0.02 Open space Boonton 14.9 1,085 3 0 Woods-grass combination Woodstown - - 3 0 Open space Keyport - - 4 0 Open space Keyport - - 4 0 Open space Woodstown - - 5 0 Gravel, dirt Keyport - - 5 0 brush Adelphia - - 6 0 Woods-grass combination Keyport - - 6 0 Brush Adelphia - - 7 0 brush Adrian - - 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

hia - - 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 Total Total Total Annual Annual Annual Annual Total = 0.7 Recharge Recharge Total = 0.7 Recharge Recharge (in) (cu-ft)

Recharge Recharge (in) (cu-ft) (in) (cu.ft) 0.2 543 Annual Recharge Requirements Calculation ↓ 0.4 1,085 Total Impervious Procedure to fill the Pre-Development and Post-Development Conditions Tables % of Pre-Developed Annual Recharge to Preserve = 100% Area (sq.ft) 29,621 Post-Development Annual Recharge Deficit= -543 (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= 3.34 (in) DRWC= 3.34 (in) Soil type for impervious areas are only required if an infiltration facility will be built within these areas. ERWC = 0.55 (in) EDRWC= 0.55 (in)