12 2026 02 12 Crestmont CC Stormwater Management Report

1017 Greeley Ave N Union, NJ 07083 908-964-0786 www.RSAGeolab.com Shelby Tybe Hydraulic Conductivity Test ASTM D2434 (For Calculations) Client: Langan Eng. & Env. Services, Inc. Job No.: 869 Project: Eagle Rock Ave Widening Project Lab Log No.: L#24-3391 Proj. No. 101049801 Sample: TP-8 S-1 20"-32" Date: 5/24/2024 Average Length of Soil Core 4.553 in. Initial Weight of Soil Core 1020.4 grams Final Weight of Soil Core 1018.3 grams Dry Weight of Soil Core 864.3 grams Diameter of Shelby Tube 2.875 in. Initial Moisture Content 18.06% Diameter of Standpipe 0.250 in. Final Moisture Content 17.82% Wet Density, Initial 131.51 PCF Wet Density, Final 131.25 PCF Dry Density 111.40 PCF Initial Height Final Height Change in Water Level Time Interval Hydraulic Conductivity Trial No. (inches) (inches) (inches) (secs) cm/sec in/hr 1 39.9

(inches) (secs) cm/sec in/hr 1 39.9 39.0 0.9 1680.0 1.19E-06 1.68E-03 2 39.0 38.0 1.0 1725.0 1.32E-06 1.87E-03 3 38.0 37.0 1.0 1730.0 1.35E-06 1.91E-03 Average Hydraulic Conductivity 1.28E-06 cm/sec 1.82E-03 in/hr Remarks: 1. Test Conducted Using Daired Tap Water at Standard Temp. (72° F) 2. 100% Saturation Assumed Tested by: AO Checked by: KP