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 Shelby Tube Hydraulic Conductivity Test ASTM D2434 (For Calculations) Client: Langan Eng. & Env. Services, Inc. Job No.: 869 Project: Eagle Rock Ave Widening Lab Log No.: L#25-4301 Proj. No. 101049802 Sample: TP-17B U-1 0.5'-1.25' Date: 7/18/2025 Average Length of Soil Core 4.089 in. Initial Weight of Soil Core 740.0 grams Final Weight of Soil Core 760.8 grams Dry Weight of Soil Core 610.1 grams Diameter of Shelby Tube 2.875 in. Initial Moisture Content 21.29% Diameter of Standpipe 0.250 in. Final Moisture Content 24.71% Wet Density, Initial 106.20 PCF Wet Density, Final 109.19 PCF Dry Density 87.55 PCF Initial Height Final Height Change in Water Time Interval Hydraulic Conductivity Trial No. (inches) (inches) Level (inches) (secs) cm/sec in/hr 1 38.8 38.1 0.7 1200.0 1.19E-06 1.69E-03 2 39.1 38.6

cm/sec in/hr 1 38.8 38.1 0.7 1200.0 1.19E-06 1.69E-03 2 39.1 38.6 0.5 1180.0 8.57E-07 1.21E-03 3 39.0 38.5 0.5 1180.0 8.59E-07 1.22E-03 Average Hydraulic Conductivity 9.69E-07 cm/sec 1.37E-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