1601 FLORIDA DR Geotech Report 2022-10-25

• . , INFILTRATION TEST CHECKLIST L&A Project No.: I 7O Name: /44,4Yd+Project Address:Address: ( ,o1 FfOridtx Pritie eVeVP:1-1— _I A I 6611 Test No. : IT- Test Pit Bottom Dimensions 3‘1a..6.7 X9'.1.114, Depth 1. Bottom Bottom Area (s.f.) 1/.43 Soil Condition Groom 911-k fi AW) Go! Sobsvz. TEST PROCEDURE: *we( 1. Pre-soak Period: Add water to maintain water level at least 12 inches above the bottom of test pits for at least 6 hours. Record the time and depth of water hourly in the table below. Time of * Depth to Measurement Water (hh:mm) Level (inches) 4-3/7- oc1 z3 f (e) z 2:5 4 - Vz, (43 4 ..1/.7.. *Measured from a steel rod placed across the top of the test pit. 2. Steady-state Period: The steady-state data is used to establish the measured infiltration rate. 2.1 Add water to the test pit at rate that will maintain a depth of at least 12 inches above bottom of the test pit for 1 full hour. During this hour, record the time, depth of water, cumulative volume, and instantaneous flow rate very 15-minute in table below. 2.2 Calculate the infiltration rate for each 15-minute interval. First convert the flow rate to in3/hr and the test pit bottom area into in2. Divide the flow rate by the bottom area and record the result in the table below. Time of * Depth to Cumulative Flow Infiltration Measurement (hh:mm) Water Volume Rate Level (inches) (gallons) (gpm) Rate (in/hr) (4-: 3 4--34 O1t 3.10 (9: ç I 5: 14 4-12.4 to.5 o o 3,87 tc : s1 4- 3/4- 1 gallon=231 in3. 3. Falling Head Period: The falling head data is used to confirm the measured infiltration rate calculated from the steady-state data. 3.1 At the end of the steady-state period, turn off the water and immediately record the time and depth of water in the table below. Record the time and depth of water every 15-minute for a minimum of 1 hour, or until the pit is empty.