251203_42 ERW_Stormwater Report

Colliers Engineering & Design Project Number: 24006174A Location: TP-102 Page: 1 of 1 Single Ring Infiltration Test Data: Date: 8/28/2025 1. Test No.: TP-102 2. Depth: 36" (3.0 ft) Soil Description: Silt Clay Loam 3. Presoak: Time Elapsed to Drain Completely (3"): 1 min 4. Rate of Fall Data For 1" Drop: (Min. of 3 Meas. & Elapsed Time has Stabilized; min. 2 consecutive meas. within 5 sec.) Elapsed Time Observed Field Intake Rate Meas. # (min) (sec) (in/hr) 1 2 0 30.0 2 2 0 30.0 30.0 3 2 0 If 2 consecutive meas. are >60 min, the test is ended & Observed Field Intake Rate is <1 in/hr. 5. Conversion to Hydraulic Conductivity (per chart below): a. Average Stabilized Observed Field Intake Rate (in/hr): b. Soil Hydraulic Conductivity (in/hr): 30.0 10.3 (5a. x 0.3424 = 5b.) Source: New Jersey Stormwater Best Management Practices Manual, Chapter 12: Soil Testing Criteria, pg. 47, (April 2022). Notes: Test performed in 6" dia. metal ring with height of 6", set 3" into undisturbed soil layer.