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TABLE 2 - Continued <br /> Third Quarter 2025 <br /> Landfill Gas Perimeter Migration Monitoring Results <br /> Foothill Sanitary Landfill <br /> Monitoring Date: 1/0/1900 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 0.1 0.3 20.1 80.1 -0.04 <br /> SG-1251 0.2 0.2 19.7 79.6 -0.07 <br /> SG-125 D 0.1 0.2 19.9 80.4 -0.05 <br /> Notes: <br /> Temperature: 89 °F Data Entry By: D. GONZALES <br /> Barrometric: Pressure 29.98 " Hg <br /> Conditions: SUNNY Checked By: <br /> Wind Speed (MPH): 5 mph <br /> Direction: EAST <br /> INSTRUMENT: Gem 5000 <br /> Instrument Type: IR Absorbtion <br /> Calibration Date: August 27, 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 /> NA1 Foothill\LFG Migration Monitoring\2025\3rd Qtr\ San Joaquin County <br /> FH_3rd Qtr LFG Perim Mig Monit 2025 Wells Sheet 3 of 3 Public Works\Solid Waste <br />