2026 02 12 Crestmont CC and Eagle Rock Ave Stormwater Management Report

1017 Greeley Ave N Union, NJ 07083 908-964-0786 www.RSAGeolab.com Tube Permeameter Test Client: Langan Eng. & Env. Services, Inc. Job No.: 869 Project: Eagle Rock Ave Widening Project Lab Log No.: L#25-4128 Proj. No. 101049802 Sample: TP-11, ST-1, 1.75' Date: 4/29/2025 Average Length of Soil Core 3.523 in. Initial Weight of Soil Core 737.8 grams Final Weight of Soil Core 741.3 grams Dry Weight of Soil Core 599.2 grams Diameter of Shelby Tube 2.875 in. Initial Moisture Content 23.12% Diameter of Standpipe 0.250 in. Final Moisture Content 23.71% Wet Density, Initial 122.89 PCF Wet Density, Final 123.48 PCF Dry Density 99.81 PCF Initial Height Final Height Change in Water Level Time Interval Hydraulic Conductivity Trial No. (inches) (inches) (inches) (secs) cm/sec in/hr 1 39.8 38.9 0.9 470.0 3.29E-06 4.67E-03

cm/sec in/hr 1 39.8 38.9 0.9 470.0 3.29E-06 4.67E-03 2 38.9 37.9 1.0 520.0 3.39E-06 4.80E-03 3 37.9 36.9 1.0 520.0 3.48E-06 4.93E-03 Average Hydraulic Conductivity 3.39E-06 cm/sec 4.80E-03 in/hr Remarks: 1. Test Conducted Using Daired Tap Water at Standard Temp. (72° F) 2. 100% Saturation Assumed Tested by: SP Checked by: KP