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

Coefficients #40 67.1 D90= 3.7479 D85= 2.0063 D60= 0.2905 #60 56.9 D50= 0.1728 D30= D15= #100 47.8 D10= C u= Cc= #200 40.1 Classification USCS= AASHTO= Remarks * (no specification provided) Sample Number: TP-14 ST-1 1.25' 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

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-15, ST-1, 1.33' Date: 4/29/2025 Average Length of Soil Core 3.512 in. Initial Weight of Soil Core 778.1 grams Final Weight of Soil Core 782.5 grams Dry Weight of Soil Core 659.4 grams Diameter of Shelby Tube 2.875 in. Initial Moisture Content 18.00% Diameter of Standpipe 0.250 in. Final Moisture Content 18.66% Wet Density, Initial 130.02 PCF Wet Density, Final 130.74 PCF Dry Density 110.18 PCF Initial Height Final Height Change in Water Level Time Interval Hydraulic Conductivity Trial No. (inches) (inches) (inches) (secs) cm/sec in/hr 1 40.0 38.9 1.1 360.0 5.22E-06 7.41E-03

cm/sec in/hr 1 40.0 38.9 1.1 360.0 5.22E-06 7.41E-03 2 38.9 37.8 1.1 370.0 5.23E-06 7.41E-03 3 37.8 36.5 1.3 440.0 5.36E-06 7.60E-03 Average Hydraulic Conductivity 5.27E-06 cm/sec 7.47E-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

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 4.8 12.0 7.2 6.4 17.2 52.4 SIEVE PERCENT SPEC.* PASS? Material Description SIZE FINER PERCENT (X=NO) Strong Brown 1 100.0 .75 95.2 .5 90.9 .375 88.4 Atterberg Limits PL= LL= PI= #4 83.2 #10 76.0 Coefficients #30 71.9

Coefficients #30 71.9 D90= 11.5139 D85= 6.0451 D60= 0.1955 #40 69.6 D50= D30= D15= #60 62.9 D10= C u= Cc= #100 57.4 Classification #200 52.4 USCS= AASHTO= Remarks * (no specification provided) Sample Number: TP-15 ST-1 1.33' 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

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-16, ST-1, 2.5' Date: 4/29/2025 Average Length of Soil Core 3.976 in. Initial Weight of Soil Core 832.9 grams Final Weight of Soil Core 847.8 grams Dry Weight of Soil Core 716.1 grams Diameter of Shelby Tube 2.875 in. Initial Moisture Content 16.31% Diameter of Standpipe 0.250 in. Final Moisture Content 18.39% Wet Density, Initial 122.94 PCF Wet Density, Final 125.14 PCF Dry Density 105.69 PCF Initial Height Final Height Change in Water Level Time Interval Hydraulic Conductivity Trial No. (inches) (inches) (inches) (secs) cm/sec in/hr 1 39.2 38.2 1.0 240.0 8.22E-06 1.17E-02

cm/sec in/hr 1 39.2 38.2 1.0 240.0 8.22E-06 1.17E-02 2 38.2 37.0 1.2 290.0 8.40E-06 1.19E-02 3 37.0 35.9 1.1 275.0 8.38E-06 1.19E-02 Average Hydraulic Conductivity 8.34E-06 cm/sec 1.18E-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