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 11.3 5.1 2.3 7.9 17.8 55.6 SIEVE PERCENT SPEC.* PASS? Material Description SIZE FINER PERCENT (X=NO) Strong Brown 2 100.0 1.5 92.9 1 88.7 .75 88.7 Atterberg Limits PL= LL= PI= .5 85.9 .375 85.5 Coefficients #4 83.6

Coefficients #4 83.6 D90= 31.5267 D85= 7.1542 D60= 0.1415 #10 81.3 D50= D30= D15= #30 76.3 D10= C u= Cc= #40 73.4 Classification #60 66.4 USCS= AASHTO= #100 60.5 #200 55.6 Remarks * (no specification provided) Sample Number: TP-20 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-21, ST-1, 1.67' Date: 4/29/2025 Average Length of Soil Core 4.070 in. Initial Weight of Soil Core 866.2 grams Final Weight of Soil Core 868.8 grams Dry Weight of Soil Core 720.9 grams Diameter of Shelby Tube 2.875 in. Initial Moisture Content 20.16% Diameter of Standpipe 0.250 in. Final Moisture Content 20.52% Wet Density, Initial 124.89 PCF Wet Density, Final 125.27 PCF Dry Density 103.94 PCF Initial Height Final Height Change in Water Level Time Interval Hydraulic Conductivity Trial No. (inches) (inches) (inches) (secs) cm/sec in/hr 1 39.3 38.8 0.5 1460.0 6.86E-07 9.72E-04

cm/sec in/hr 1 39.3 38.8 0.5 1460.0 6.86E-07 9.72E-04 2 38.8 38.3 0.5 1470.0 6.90E-07 9.78E-04 3 38.3 37.7 0.6 1760.0 7.01E-07 9.94E-04 Average Hydraulic Conductivity 6.92E-07 cm/sec 9.81E-04 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 2.1 4.7 2.3 8.0 11.8 71.1 SIEVE PERCENT SPEC.* PASS? Material Description SIZE FINER PERCENT (X=NO) Yellowish Brown 1 100.0 .75 97.9 .5 96.0 .375 95.1 Atterberg Limits PL= LL= PI= #4 93.2 #10 90.9 Coefficients #30 85.1

Coefficients #30 85.1 D90= 1.5925 D85= 0.5933 D60= #40 82.9 D50= D30= D15= #60 78.0 D10= C u= Cc= #100 74.5 Classification #200 71.1 USCS= AASHTO= Remarks * (no specification provided) Sample Number: TP-21 ST-1 1.67' 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