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

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 21.9 1.8 1.5 4.6 10.2 60.0 SIEVE PERCENT SPEC.* PASS? Material Description SIZE FINER PERCENT (X=NO) Strong Brown 2 100.0 1.5 84.6 1 81.4 .75 78.1 Atterberg Limits PL= LL= PI= .5 78.1 .375 77.7 Coefficients #4 76.3

Coefficients #4 76.3 D90= 43.0891 D85= 38.5386 D60= #10 74.8 D50= D30= D15= #30 71.8 D10= C u= Cc= #40 70.2 Classification #60 66.9 USCS= AASHTO= #100 64.2 #200 60.0 Remarks * (no specification provided) Sample Number: TP-11 ST-1 1.75' 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

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-12, ST-1, 1' Date: 4/29/2025 Average Length of Soil Core 3.485 in. Initial Weight of Soil Core 745.6 grams Final Weight of Soil Core 752.4 grams Dry Weight of Soil Core 629.7 grams Diameter of Shelby Tube 2.875 in. Initial Moisture Content 18.41% Diameter of Standpipe 0.250 in. Final Moisture Content 19.50% Wet Density, Initial 125.55 PCF Wet Density, Final 126.70 PCF Dry Density 106.03 PCF Initial Height Final Height Change in Water Level Time Interval Hydraulic Conductivity Trial No. (inches) (inches) (inches) (secs) cm/sec in/hr 1 39.8 38.6 1.2 255.0 8.04E-06 1.14E-02

cm/sec in/hr 1 39.8 38.6 1.2 255.0 8.04E-06 1.14E-02 2 38.6 37.5 1.1 235.0 8.23E-06 1.17E-02 3 37.5 36.3 1.2 270.0 8.06E-06 1.14E-02 Average Hydraulic Conductivity 8.11E-06 cm/sec 1.15E-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 13.2 6.8 5.4 10.7 17.8 46.1 SIEVE PERCENT SPEC.* PASS? Material Description SIZE FINER PERCENT (X=NO) Strong Brown 1.5 100.0 1 87.8 .75 86.8 .5 85.3 Atterberg Limits PL= LL= PI= .375 83.3 #4 80.0 Coefficients #10 74.6

Coefficients #10 74.6 D90= 28.3951 D85= 12.1403 D60= 0.3158 #30 67.0 D50= 0.1381 D30= D15= #40 63.9 D10= C u= Cc= #60 56.7 Classification #100 50.7 USCS= AASHTO= #200 46.1 Remarks * (no specification provided) Sample Number: TP-12 ST-1 1' 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