Geotechnical Engineering Report Addendum No 1 Results of Testing 01 29 2025 submission

Single Ring Infiltrometer Test Log ECS Project No.: 44:2100-A Project Location: 460 Prospect Avenue Project Name: Mavis #2296 Infiltration Testing - West Orange Township: West Orange Block/Lot: Testing per New Jersey Stormwater Best Management Practices Manual, Chapter 12, Subsection A5 (April 2022) TEST ID: TP-01A Soil Layer Classification: Sandy Loam Infiltration Test Elev.: 615.0 Date: 1/14/2025 Converted Water Level Field Recorded Calculated Time Per Field Observed Field Observed Averaged Hydraulic Water Trial Hydraulic MM SS .ss Drop Time 1-inch Water Level Drop Intake Rate Intake Rate Conductivity Rate Level Drop # Conductivity (in) (MM:SS.ss) (MM.mm) (inches/min) (inches/hr) (inches/hr) (inches/hr) 0.13 60 00 00 1 0.1 60:00.00 60.00 0.0021 0.13 0.04 0.13 60 00 00 2 0.1 60:00.00 60.00 0.0021 0.13 0.04

0.0021 0.13 0.04 0.04 0.13 60 00 00 3 0.1 60:00.00 60.00 0.0021 0.13 0.04 0.13 60 00 00 4 0.1 60:00.00 60.00 0.0021 0.13 0.04 TEST ID: TP-02A Soil Layer Classification: Sandy Loam Infiltration Test Elev.: 615.0 Date: 1/14/2025 Converted Water Level Field Recorded Calculated Time Per Field Observed Field Observed Averaged Hydraulic Water Trial Hydraulic MM SS .ss Drop Time 1-inch Water Level Drop Intake Rate Intake Rate Conductivity Rate Level Drop # Conductivity (in) (MM:SS.ss) (MM.mm) (inches/min) (inches/hr) (inches/hr) (inches/hr) 1.00 28 00 00 1 1.0 28:00.00 28.00 0.0357 2.14 0.73 1.00 53 46 00 2 1.0 53:46.00 53.77 0.0186 1.12 0.38

1.12 0.38 0.39 0.83 60 00 00 3 0.8 60:00.00 60.00 0.0138 0.83 0.28 0.50 60 00 00 4 0.5 60:00.00 60.00 0.0083 0.50 0.17