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

Coefficients #10 71.4 D90= 28.3802 D85= 19.3724 D60= 0.4151 #30 63.7 D50= 0.2002 D30= D15= #40 60.3 D10= C u= Cc= #60 53.1 Classification #100 46.6 USCS= AASHTO= #200 42.6 Remarks * (no specification provided) Sample Number: TP-18 ST-1 1.5' Date: 4-29-25 RSA Geolab Client: Langan Engineering Project: Eagle Rock Ave. Widening Project, West Orange, NJ Proj.#101049802 Union, New Jersey Project No: 869 Figure Tested By:

Union, New Jersey Project No: 869 Figure Tested By: SP Checked By: KP

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-19, ST-3, 0.33' Date: 4/29/2025 Average Length of Soil Core 5.203 in. Initial Weight of Soil Core 1088.4 grams Final Weight of Soil Core 1092.5 grams Dry Weight of Soil Core 888.8 grams Diameter of Shelby Tube 2.875 in. Initial Moisture Content 22.46% Diameter of Standpipe 0.250 in. Final Moisture Content 22.92% Wet Density, Initial 122.76 PCF Wet Density, Final 123.22 PCF Dry Density 100.24 PCF Initial Height Final Height Change in Water Level Time Interval Hydraulic Conductivity Trial No. (inches) (inches) (inches) (secs) cm/sec in/hr 1 39.6 38.0 1.6 180.0 2.29E-05 3.25E-02

cm/sec in/hr 1 39.6 38.0 1.6 180.0 2.29E-05 3.25E-02 2 38.0 36.4 1.6 185.0 2.32E-05 3.29E-02 3 36.4 34.8 1.6 185.0 2.43E-05 3.44E-02 Average Hydraulic Conductivity 2.35E-05 cm/sec 3.33E-02 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

Particle Size Distribution Report 1½ in. 3/8 in. ¾ in. ½ in. #100 #140 #200 6 in. 3 in. 2 in. 1 in. #10 #20 #30 #40 #60 #4 100 90 80 70 PERCENT FINER 60 50 40 30 20 10 0

60 50 40 30 20 10 0 100 10 1 0.1 0.01 0.001 GRAIN SIZE - mm. % Gravel % Sand % Fines % +3" Coarse Fine Coarse Medium Fine Silt Clay 0.0 16.7 5.6 2.5 12.1 26.9 36.2 SIEVE PERCENT SPEC.* PASS? Material Description SIZE FINER PERCENT (X=NO) Dark Brown 2 100.0 1.5 83.3 1 83.3 .75 83.3 Atterberg Limits PL= LL= PI= .5 81.6 .375 80.5 Coefficients #4 77.7

Coefficients #4 77.7 D90= 43.8325 D85= 39.8687 D60= 0.3609 #10 75.2 D50= 0.2313 D30= D15= #30 67.7 D10= C u= Cc= #40 63.1 Classification #60 51.7 USCS= AASHTO= #100 42.1 #200 36.2 Remarks * (no specification provided) Sample Number: TP-19 ST-3 0.33' Date: 4-29-25 RSA Geolab Client: Langan Engineering Project: Eagle Rock Ave. Widening Project, West Orange, NJ Proj.#101049802 Union, New Jersey Project No: 869 Figure Tested By: SP

Union, New Jersey Project No: 869 Figure Tested By: SP Checked By: KP

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-20, ST-1, 1.5' Date: 4/29/2025 Average Length of Soil Core 5.692 in. Initial Weight of Soil Core 1177.8 grams Final Weight of Soil Core 1185.4 grams Dry Weight of Soil Core 988.6 grams Diameter of Shelby Tube 2.875 in. Initial Moisture Content 19.13% Diameter of Standpipe 0.250 in. Final Moisture Content 19.91% Wet Density, Initial 121.43 PCF Wet Density, Final 122.22 PCF Dry Density 101.93 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 38.4 1.5 720.0 5.82E-06 8.25E-03

cm/sec in/hr 1 39.9 38.4 1.5 720.0 5.82E-06 8.25E-03 2 38.4 37.0 1.4 710.0 5.72E-06 8.10E-03 3 37.0 35.7 1.3 695.0 5.63E-06 7.97E-03 Average Hydraulic Conductivity 5.72E-06 cm/sec 8.11E-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