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Landfill Gas Monthly Perimeter Migration Monitoring Results <br /> Foothill Sanitary Landfill <br /> Monitoring Date: 5/6/25 Certified By: Ken Espinoza <br /> Monitoring Well Methane CO2 Oxygen Balance Pressure Note <br /> Probe (%-Vol) (%-Vol) l Inch WC <br /> SG-01 0.3 0.4 18.1 81.2 -1.34 <br /> SG-02AD 0.0 0.1 19.0 80.9 -0.78 <br /> SG-02AI 0.0 0.4 13.2 86.4 -0.96 <br /> SG-02AS 0.0 0.2 16.6 83.2 -0.88 <br /> SG-03AD 0.0 0.2 9.8 90.0 -0.97 <br /> SG-03AI 0.0 0.0 19.5 80.5 -0.54 <br /> SG-03AS 0.0 5.2 15.1 79.7 -0.76 <br /> SG-04 0.0 1.5 17.8 80.7 -1.83 <br /> SG-05 0.0 0.5 19.3 80.2 -0.36 <br /> SG-06AD 0.1 0.2 19.7 80.0 -0.79 <br /> SG-06A1 0.1 0.6 19.9 79.4 -0.83 <br /> SG-06AS 0.1 0.9 19.5 79.5 -0.43 <br /> SG-07 0.0 1.4 17.6 81.0 -0.53 <br /> SG-09 0.2 0.3 20.5 79.0 -0.03 <br /> SG-10AD 0.0 0.4 19.4 80.2 -0.11 <br /> SG-11AD 0.0 0.2 15.4 84.4 -1.03 <br /> SG-11 AI 0.0 1.6 13.6 84.8 -0.89 <br /> SG-11AS 0.0 0.1 19.2 80.7 -1.01 <br /> Notes: <br /> Temperature: 70°F Data Entry By: Meng Lo/5.13.25 <br /> Barrometric: Pressur( 29.87" Hg <br /> Conditions: Sunny Checked By: <br /> Wind Speed (MPH): 4 mph E <br /> Direction: E <br /> INSTRUMENT: Gem 5000 <br /> Instrument Type: I Absorbtion <br /> Calibration Date: May 5, 2025 <br /> Calibration Check: 50% CH4 <br /> Abbreviations: <br /> SG-"n" = Soil Gas Monitoring Well <br /> S= Shallow Probe, 1= Intermediate Probe, D = Deep Probe <br /> %-Vol = Percent by Volume <br /> Created:5/14/2025 <br /> N:\1Foothill\LFG Migration Monitoring\2025\2nd Qtr\ San Joaquin County <br /> FH_2nd Qtr LFG Perim Mig Monit 2025 Interior Wells Sheet 1 of 1 Public Works\Solid Waste <br />