251203_42 ERW_Stormwater Report

EXPLORATION LOCATION PLAN SCALE : 1" = 60' Linear unit of measure: US Survey Foot (1 ft = 1200/3937 m) UNAUTHORIZED ONLY MAPS WITHALTERATION THE LAND SURVEYOR OR ADDITION OR PROFESSIONAL TO A SURVEY OR ENGINEER'S ENGINEERING SEALMAP AREBEARING GENUINEATRUE LICENSED AND CORRECT LAND SURVEYOR COPIES OR OF THE PROFESSIONAL LAND SURVEYOR ENGINEER OR PROFESSIONAL IS A VIOLATIONENGINEER’S OF SECTION ORIGINAL 7209, SUB-DIVISION WORK AND 2, OPINION. OF THE NEW YORK STATE EDUCATION LAW. SHEET NUMBER: B-01-ELP

Appendix A Test Pit Logs GEOTECHNICAL DATA REPORT | November 25, 2025

Engineering & Design USDA Classification System 100 %, [e) 2. 5% S silty clay clay loam \ loam e cS silt loam S 10 Qs ; (2) Y silt i © 426366848 BD percent sand oe

PROJECT: 42 Eagle Ridge Way LOCATION: West Orange, NJ PROJECT NO. 24006174A GROUNDWATER: First Encountered DEPTH (ft) DATE N.E. 08/28/25 DEPTH (ft.) 0 +/-613 Survey GROUND ELEVATION (ft): ELEV. FROM: GROUNDWATER ELEV. (ft): EQUIPMENT: Mini Excavator FIELD OBSERVER: FSD CHECKED BY: DP DATE STARTED 08/28/25 DATE FINISHED 08/28/25 DESCRIPTION 10YR 3/3 Silt Loam, 20% coarse fragments, subangular blocky, friable. (moist) 54" 6.5 PAGE 1 OF 1 CONTRACTOR: Grabowski Construction, Inc. WATER SYMBOL At Completion (0 hrs.) TEST PIT: TP-101 72" -6 5YR 4/6 Silt Clay Loam, 20% coarse fragments, subangular blocky, friable. (moist) END OF TEST PIT AT 72 INCHES END OF TEST PIT AT 6 FT DUE TO REFUSAL ON BEDROCK 13 19.5 26 32.5 39 NOTES: Infiltration test performed at 3 ft below existing grades. Backfilled with soil cuttings upon completion. Perched Water Conditions - Not Encountered Est. Seasonal High Groundwater - Not Detected TEST PIT: TP-101 PAGE 1 OF 1

PROJECT: 42 Eagle Ridge Way LOCATION: West Orange, NJ PROJECT NO. 24006174A GROUNDWATER: First Encountered DEPTH (ft) DATE N.E. 08/28/25 DEPTH (ft.) 0 PAGE 1 OF 1 +/-615 Survey GROUND ELEVATION (ft): ELEV. FROM: GROUNDWATER ELEV. (ft): CONTRACTOR: Grabowski Construction, Inc. EQUIPMENT: Mini Excavator FIELD OBSERVER: FSD CHECKED BY: DP WATER SYMBOL At Completion (0 hrs.) TEST PIT: TP-102 DATE STARTED 08/28/25 DATE FINISHED 08/28/25 DESCRIPTION 24" 10YR 3/3 Silt Loam, 20% coarse fragments, subangular blocky, friable. (moist) 5YR 4/6 Silt Clay Loam, 20% coarse fragments, subangular blocky, friable. (moist) 60" 6.5 -5 END OF TEST PIT AT 60 INCHES END OF TEST PIT AT 5 FT DUE TO REFUSAL ON BEDROCK 13 19.5 26 32.5 39 NOTES: Infiltration test performed at 3 ft below existing grades. Backfilled with soil cuttings upon completion. Perched Water Conditions - Not Encountered Est. Seasonal High Groundwater - Not Detected TEST PIT: TP-102 PAGE 1 OF 1

Appendix B Test Pit Photographs GEOTECHNICAL DATA REPORT | November 25, 2025

PROJECT: Plate B-1 42 EAGLE RIDGE WAY, Test Pit TP-101 Photograph TOWNSHIP OF WEST ORANGE, ESSEX COUNTY, NJ Project No.: 24006174A

PROJECT: Plate B-2 42 EAGLE RIDGE WAY, Test Pit TP-102 Photograph TOWNSHIP OF WEST ORANGE, ESSEX COUNTY, NJ Project No.: 24006174A

Appendix C Single Ring Infiltration Logs GEOTECHNICAL DATA REPORT | November 25, 2025

Colliers Engineering & Design Project Number: 24006174A Location: TP-101 Page: 1 of 1 Single Ring Infiltration Test Data: Date: 8/28/2025 1. Test No.: TP-101 2. Depth: 36" (3.0 ft) Soil Description: Silt Loam 3. Presoak: Time Elapsed to Drain Completely (3"): 15 min 4. Rate of Fall Data For 1" Drop: (Min. of 3 Meas. & Elapsed Time has Stabilized; min. 2 consecutive meas. within 5 sec.) Elapsed Time Observed Field Intake Rate Meas. # (min) (sec) (in/hr) 1 25 30 2.4 2 27 45 2.2 2.2 3 27 50 4 27 50 2.2 If 2 consecutive meas. are >60 min, the test is ended & Observed Field Intake Rate is <1 in/hr. 5. Conversion to Hydraulic Conductivity (per chart below): a. Average Stabilized Observed Field Intake Rate (in/hr): b. Soil Hydraulic Conductivity (in/hr): 2.2 0.8 (5a. x 0.3424 = 5b.) Source: New Jersey Stormwater Best Management Practices Manual, Chapter 12: Soil Testing Criteria, pg. 47, (April 2022). Notes: Test performed in 6" dia. metal ring with height of 6", set 3" into undisturbed soil layer.