1601 FLORIDA DR Geotech Report 2022-10-25

• INFILTRATION TEST CHECKLIST L&A Project No.: II-015 Project Name: AY + - F164.- Project ( ~ .- Project Address: (+ ,p t e i c oe, eV - "" ; tt Test No. : .' '- ,,, Test Pit Bottom Dimensions 3.15X 4,4Z. Depth I — Bottom Area (s.f.) ( Soil Condition ' 4 l-hi4itte, 5A C, "3 it 4.v4az.e3vieNel TEST PROCEDURE: 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) to: ®q- c- Kg- II : 404- --o tZ z 04t. 4-1/6 t . D 5-t 0 5_ r *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 Water Volume Rate Rate hh:mm) Level (inches) (gallons) (gpm) (in/hr) t1a t°Gt.z, 0.47 7 « ti t® g a, °7 •`1 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.