2026 02 12 Crestmont CC and Eagle Rock Ave 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-8 S-1 20"-32" Date: 5/24/2024 Average Length of Soil Core 4.553 in. Initial Weight of Soil Core 1020.4 grams Final Weight of Soil Core 1018.3 grams Dry Weight of Soil Core 864.3 grams Diameter of Shelby Tube 2.875 in. Initial Moisture Content 18.06% Diameter of Standpipe 0.250 in. Final Moisture Content 17.82% Wet Density, Initial 131.51 PCF Wet Density, Final 131.25 PCF Dry Density 111.40 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 1680.0 1.19E-06 1.68E-03 2 39.0 38.0 1.0 1725.0 1.32E-06 1.87E-03 3 38.0 37.0 1.0 1730.0 1.35E-06 1.91E-03 Average Hydraulic Conductivity 1.28E-06 cm/sec 1.82E-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

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 0.0 11.4 5.3 10.1 15.6 57.6 SIEVE PERCENT SPEC.* PASS? Material Description SIZE FINER PERCENT (X=NO) Dark Yellowish Brown .75 100.0 .5 95.3 .375 92.8 #4 88.6 Atterberg Limits PL= LL= PI= #10 83.3 #30 76.2 Coefficients #40 73.2

Coefficients #40 73.2 D90= 6.1233 D85= 2.6581 D60= 0.1193 #60 66.8 D50= D30= D15= #100 61.6 D10= C u= Cc= #200 57.6 Classification USCS= AASHTO= Remarks * (no specification provided) Sample Number: TP-8 S-1 20-32" Date: 5-24-24 RSA Geolab Client: Langan Engineering Project: Eagle Rock Ave Widening Project, West Orange, NJ Project#101049801 Union, New Jersey Project No: 869 Figure Tested By: EE

Project No: 869 Figure Tested By: EE Checked By: KP

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-9 S-1 24"-36" Date: 5/24/2024 Average Length of Soil Core 4.493 in. Initial Weight of Soil Core 1007.6 grams Final Weight of Soil Core 1008.1 grams Dry Weight of Soil Core 860.4 grams Diameter of Shelby Tube 2.875 in. Initial Moisture Content 17.10% Diameter of Standpipe 0.250 in. Final Moisture Content 17.16% Wet Density, Initial 131.60 PCF Wet Density, Final 131.67 PCF Dry Density 112.38 PCF Initial Height Final Height Change in Water Level Time Interval Hydraulic Conductivity Trial No. (inches) (inches) (inches) (secs) cm/sec in/hr 1 39.5

(inches) (secs) cm/sec in/hr 1 39.5 37.6 1.9 1220.0 3.49E-06 4.94E-03 2 37.6 35.4 2.2 1400.0 3.72E-06 5.27E-03 3 35.4 33.0 2.4 1620.0 3.74E-06 5.30E-03 Average Hydraulic Conductivity 3.65E-06 cm/sec 5.17E-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

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 5.2 17.4 6.4 9.7 14.2 47.1 SIEVE PERCENT SPEC.* PASS? Material Description SIZE FINER PERCENT (X=NO) Reddish Brown 1 100.0 .75 94.8 .5 90.5 .375 85.0 Atterberg Limits PL= LL= PI= #4 77.4 #10 71.0 Coefficients # 30 64.1