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 17.4 8.5 3.5 9.7 19.5 41.4 SIEVE PERCENT SPEC.* PASS? Material Description SIZE FINER PERCENT (X=NO) Reddish Brown 1.5 100.0 1 87.1 .75 82.6 .5 78.9 Atterberg Limits PL= LL= PI= .375 77.7 #4 74.1 Coefficients #10 70.6

Coefficients #10 70.6 D90= 28.3998 D85= 22.7814 D60= 0.3943 #30 64.3 D50= 0.2039 D30= D15= #40 60.9 D10= C u= Cc= #60 53.4 Classification #100 45.5 USCS= AASHTO= #200 41.4 Remarks * (no specification provided) Sample Number: TP-16 ST-1 2.5' 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 Shelby Tube Hydraulic Conductivity Test ASTM D2434 (For Calculations) Client: Langan Eng. & Env. Services, Inc. Job No.: 869 Project: Eagle Rock Ave Widening Lab Log No.: L#25-4301 Proj. No. 101049802 Sample: TP-17A U-1 0.5'-1.25' Date: 7/18/2025 Average Length of Soil Core 4.089 in. Initial Weight of Soil Core 1007.2 grams Final Weight of Soil Core 1035.2 grams Dry Weight of Soil Core 889.9 grams Diameter of Shelby Tube 2.875 in. Initial Moisture Content 13.18% Diameter of Standpipe 0.250 in. Final Moisture Content 16.33% Wet Density, Initial 144.55 PCF Wet Density, Final 148.57 PCF Dry Density 127.72 PCF Initial Height Final Height Change in Water Time Interval Hydraulic Conductivity Trial No. (inches) (inches) Level (inches) (secs) cm/sec in/hr 1 40.1 39.6 0.5 300.0 3.28E-06 4.66E-03 2 39.6 39.0

cm/sec in/hr 1 40.1 39.6 0.5 300.0 3.28E-06 4.66E-03 2 39.6 39.0 0.6 310.0 3.87E-06 5.48E-03 3 39.8 39.3 0.5 300.0 3.31E-06 4.69E-03 Average Hydraulic Conductivity 3.49E-06 cm/sec 4.94E-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 16.9 9.2 3.9 10.5 21.7 37.8 SIEVE PERCENT SPEC.* PASS? Material Description SIZE FINER PERCENT (X=NO) Strong Brown 1.5 100.0 1 83.1 .75 83.1 .5 80.0 Atterberg Limits PL= LL= PI= .375 77.9 #4 73.9 Coefficients #10 70.0

Coefficients #10 70.0 D90= 31.4271 D85= 27.5989 D60= 0.4425 #30 63.4 D50= 0.2162 D30= D15= #40 59.5 D10= C u= Cc= #60 51.9 Classification #100 45.6 USCS= AASHTO= #200 37.8 Remarks * (no specification provided) Sample Number: TP-17A U-1 0.5-1.25' Date: 7-18-25 RSA Geolab Client: Langan Engineering Project: Eagle Rock Ave Widening, West Orange, NJ Project#101049802 Union, New Jersey Project No: 869 Figure Tested By: JK

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