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TABLE 2 - Continued <br /> Fourth Quarter 2025 <br /> Landfill Gas Perimeter Migration Monitoring Results <br /> Foothill Sanitary Landfill <br /> Monitoring Date: 12/3/2025 Certified By: K. Espinoza <br /> Monitoring Well Methane CO2 Oxygen Balance Pressure Note <br /> Probe (%-Vol) (%-Vol %-Vol) (%-Vol) (Inch WC <br /> SG-125 S 0.2 0.4 20.9 78.5 0.00 <br /> SG-1251 0.2 0.4 21.0 78.4 -0.19 <br /> SG-125 D 0.2 0.2 21.2 78.4 -0.34 <br /> Notes: <br /> Temperature: 52 °F Data Entry By: AR/12.3.25 <br /> Barrometric: Pressun 30.13 " Hg <br /> Conditions: CLOUDY Checked By: JA/ 12.16.25 <br /> Wind Speed (MPH): 6 mph <br /> Direction: SE <br /> INSTRUMENT: Gem 5000 <br /> Instrument Type: IR Absorbtion <br /> Calibration Date: December 1, 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\4th Qtr\ San Joaquin County <br /> FH_4th Qtr LFG Perim Mig Monit 2025 Wells Sheet 3 of 3 Public Works\Solid Waste <br />