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

Coefficients # 30 64.1 D90= 12.3140 D85= 9.5121 D60= 0.3681 #40 61.3 D50= 0.1245 D30= D15= #60 56.1 D10= C u= Cc= #100 51.3 Classification #200 47.1 USCS= AASHTO= Remarks * (no specification provided) Sample Number: TP-9 S-1 24-36" 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-10 S-1 16"-28" Date: 5/24/2024 Average Length of Soil Core 4.084 in. Initial Weight of Soil Core 886.6 grams Final Weight of Soil Core 871.4 grams Dry Weight of Soil Core 718.9 grams Diameter of Shelby Tube 2.875 in. Initial Moisture Content 23.34% Diameter of Standpipe 0.250 in. Final Moisture Content 21.22% Wet Density, Initial 127.40 PCF Wet Density, Final 125.21 PCF Dry Density 103.29 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

(inches) (secs) cm/sec in/hr 1 39.2 38.7 0.5 1660.0 6.07E-07 8.60E-04 2 38.7 38.2 0.5 1670.0 6.11E-07 8.66E-04 3 38.2 37.8 0.4 1380.0 5.98E-07 8.48E-04 Average Hydraulic Conductivity 6.05E-07 cm/sec 8.58E-04 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 4.3 3.9 11.2 15.2 65.4 SIEVE PERCENT SPEC.* PASS? Material Description SIZE FINER PERCENT (X=NO) Yellowish Brown .75 100.0 .5 98.7 .375 98.4 #4 95.7 Atterberg Limits PL= LL= PI= #10 91.8 #30 85.4 Coefficients #40 80.6

Coefficients #40 80.6 D90= 1.0452 D85= 0.5822 D60= #60 77.0 D50= D30= D15= #100 70.9 D10= C u= Cc= #200 65.4 Classification USCS= AASHTO= Remarks * (no specification provided) Sample Number: TP-10 S-1 16-28" 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 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-11, ST-1, 1.75' Date: 4/29/2025 Average Length of Soil Core 3.523 in. Initial Weight of Soil Core 737.8 grams Final Weight of Soil Core 741.3 grams Dry Weight of Soil Core 599.2 grams Diameter of Shelby Tube 2.875 in. Initial Moisture Content 23.12% Diameter of Standpipe 0.250 in. Final Moisture Content 23.71% Wet Density, Initial 122.89 PCF Wet Density, Final 123.48 PCF Dry Density 99.81 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 38.9 0.9 470.0 3.29E-06 4.67E-03

cm/sec in/hr 1 39.8 38.9 0.9 470.0 3.29E-06 4.67E-03 2 38.9 37.9 1.0 520.0 3.39E-06 4.80E-03 3 37.9 36.9 1.0 520.0 3.48E-06 4.93E-03 Average Hydraulic Conductivity 3.39E-06 cm/sec 4.80E-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