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Landfill Gas Monthly Perimeter Migration Monitoring Results <br />Foothill Sanitary Landfill <br />Monitorinq Date: 1/22/2025 <br />Certified Bv: Menq Lo <br />Monitoring Well <br />Probe(% <br />Methane <br />-Vol(% <br />CO2 <br />-Vol <br />Oxygen <br />%-Vol <br />Balance <br />%-Vol <br />Pressure <br />Inch WC <br />Note <br />SG -01 <br />0.2 <br />0.5 <br />18.5 <br />80.8 <br />-2.04 <br />IR Absorbtion <br />SG-02AD <br />0.0 <br />0.2 <br />18.3 <br />81.5 <br />-1.26 <br />SG-02AI <br />0.0 <br />0.4 <br />15.0 <br />84.6 <br />-0.87 <br />SG-02AS <br />0.1 <br />1.0 <br />18.2 <br />80.7 <br />-0.55 <br />SG-03AD <br />0.0 <br />0.1 <br />19.4 <br />80.5 <br />-1.90 <br />SG-03AI <br />0.0 <br />4.8 <br />10.8 <br />84.4 <br />-0.38 <br />SG-03AS <br />0.0 <br />2.9 <br />18.0 <br />79.1 <br />-0.18 <br />SG -04 <br />0.0 <br />1.5 <br />19.2 <br />79.3 <br />-0.31 <br />SG -05 <br />0.0 <br />0.6 <br />19.8 <br />79.6 <br />-0.15 <br />SG-06AD <br />0.0 <br />0.2 <br />20.2 <br />79.6 <br />-1.13 <br />SG-06AI <br />0.0 <br />0.7 <br />20.5 <br />78.8 <br />-0.48 <br />SG-06AS <br />0.0 <br />1.0 <br />20.3 <br />78.7 <br />-0.16 <br />SG -07 <br />0.0 <br />0.8 <br />19.9 <br />79.3 <br />-0.33 <br />SG -09 <br />0.0 <br />0.3 <br />20.8 <br />78.9 <br />-0.34 <br />SG-10AD <br />0.0 <br />0.1 <br />20.4 <br />79.5 <br />-0.02 <br />SG-11AD <br />0.1 <br />0.1 <br />18.7 <br />81.1 <br />-1.19 <br />SG -11 AI <br />0.0 <br />0.3 <br />20.1 <br />79.6 <br />-0.80 <br />SG-11AS <br />0.1 <br />0.1 <br />20.6 <br />79.2 <br />-0.45 <br />Notes <br />Temperature: 46°F <br />Barrometric: Pressure: <br />30.38" Hg <br />Conditions: Sunny <br />Wind Speed (MPH): <br />4 mph <br />Direction: N <br />INSTRUMENT: Gem <br />5000 <br />Instrument Type: <br />IR Absorbtion <br />Calibration Date: <br />January 22, 2025 <br />Calibration Check: <br />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: 2/4/2025 <br />N:\1Foothill\LFG Migration Monitoring\2025\1st Qtr\ San Joaquin County <br />FH_1st Qtr LFG Perim Mig Monit 2025 Interior Wells Sheet 1 of 1 Public Works\Solid Waste <br />