12 2026 02 12 Crestmont CC Stormwater Management Report

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-17B U-1 0.5'-1.25' Date: 7/18/2025 Average Length of Soil Core 4.089 in. Initial Weight of Soil Core 740.0 grams Final Weight of Soil Core 760.8 grams Dry Weight of Soil Core 610.1 grams Diameter of Shelby Tube 2.875 in. Initial Moisture Content 21.29% Diameter of Standpipe 0.250 in. Final Moisture Content 24.71% Wet Density, Initial 106.20 PCF Wet Density, Final 109.19 PCF Dry Density 87.55 PCF Initial Height Final Height Change in Water Time Interval Hydraulic Conductivity Trial No. (inches) (inches) Level (inches) (secs) cm/sec in/hr 1 38.8 38.1 0.7 1200.0 1.19E-06 1.69E-03 2 39.1 38.6

cm/sec in/hr 1 38.8 38.1 0.7 1200.0 1.19E-06 1.69E-03 2 39.1 38.6 0.5 1180.0 8.57E-07 1.21E-03 3 39.0 38.5 0.5 1180.0 8.59E-07 1.22E-03 Average Hydraulic Conductivity 9.69E-07 cm/sec 1.37E-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 2.3 19.2 5.2 10.9 17.4 45.0 SIEVE PERCENT SPEC.* PASS? Material Description SIZE FINER PERCENT (X=NO) Brown 1 100.0 .75 97.7 .5 87.2 .375 83.7 Atterberg Limits PL= LL= PI= #4 78.5 #10 73.3 Coefficients #30 65.8

Coefficients #30 65.8 D90= 14.2152 D85= 11.0327 D60= 0.3427 #40 62.4 D50= 0.1328 D30= D15= #60 56.4 D10= C u= Cc= #100 51.1 Classification #200 45.0 USCS= AASHTO= Remarks * (no specification provided) Sample Number: TP-17B 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

Project No: 869 Figure Tested By: JK 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-18, ST-1, 1.5' Date: 4/29/2025 Average Length of Soil Core 3.566 in. Initial Weight of Soil Core 764.8 grams Final Weight of Soil Core 779.9 grams Dry Weight of Soil Core 665.3 grams Diameter of Shelby Tube 2.875 in. Initial Moisture Content 14.95% Diameter of Standpipe 0.250 in. Final Moisture Content 17.22% Wet Density, Initial 125.85 PCF Wet Density, Final 128.35 PCF Dry Density 109.49 PCF Initial Height Final Height Change in Water Level Time Interval Hydraulic Conductivity Trial No. (inches) (inches) (inches) (secs) cm/sec in/hr 1 39.7 38.0 1.7 420.0 7.14E-06 1.01E-02

cm/sec in/hr 1 39.7 38.0 1.7 420.0 7.14E-06 1.01E-02 2 38.0 36.4 1.6 400.0 7.37E-06 1.04E-02 3 36.4 34.8 1.6 410.0 7.51E-06 1.06E-02 Average Hydraulic Conductivity 7.34E-06 cm/sec 1.04E-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 15.2 10.2 3.2 11.1 17.7 42.6 SIEVE PERCENT SPEC.* PASS? Material Description SIZE FINER PERCENT (X=NO) Strong Brown 1.5 100.0 1 87.6 .75 84.8 .5 79.0 Atterberg Limits PL= LL= PI= .375 78.3 #4 74.6 Coefficients #10 71.4