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TABLE 2 - Continued <br /> First Quarter 2025 <br /> Landfill Gas Perimeter Migration Monitoring Results <br /> Foothill Sanitary Landfill <br /> Monitoring Date: 1/22/25 Ceritified By: K. Espinoza <br /> Monitoring Well Methane CO2 Oxygen Balance Pressure Note <br /> Probe (%-Vol (%-Vol %-Vol) (%-Vol) (Inch WC <br /> SG-125 S 0.0 0.2 20.6 79.2 -0.27 <br /> SG-1251 0.0 0.3 20.4 79.3 -0.29 <br /> SG-125 D 1 0.0 0.4 1 20.4 79.2 -0.35 <br /> Notes: <br /> Temperature: 58°F <br /> Barrometric: Pressure: 30.34" Hg <br /> Conditions: Sunny <br /> Wind Speed (MPH): 1 mph <br /> Direction: SE <br /> INSTRUMENT: Gem 5000 <br /> Instrument Type: I Absorbtion <br /> Calibration Date: January 22, 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 /> Revised 6-25-12 <br /> NA1Foothill\LFG Migration Monitoring\2025\1st Qtr\ San Joaquin County <br /> FH_1st Qtr LFG Perim Mig Monit 2025 Wells Sheet 3 of 3 Public Works\Solid Waste <br />