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-3 S-1 1'-2' Date: 5/24/2024 Average Length of Soil Core 3.435 in. Initial Weight of Soil Core 753.3 grams Final Weight of Soil Core 754.1 grams Dry Weight of Soil Core 634.7 grams Diameter of Shelby Tube 2.875 in. Initial Moisture Content 18.67% Diameter of Standpipe 0.250 in. Final Moisture Content 18.81% Wet Density, Initial 128.69 PCF Wet Density, Final 128.84 PCF Dry Density 108.44 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 0.9 480.0 3.14E-06 4.44E-03 2 39.0 38.0 1.0 540.0 3.17E-06 4.50E-03 3 38.0 37.0 1.0 550.0 3.20E-06 4.53E-03 Average Hydraulic Conductivity 3.17E-06 cm/sec 4.49E-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