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TABLE 2 <br />Second Quarter 2025 <br />Landfill Gas Perimeter Migration Monitoring Results <br />Foothill Sanitary Landfill <br />Monitoring Date: 5/6/2025 <br />Certified By: Meng Lo <br />Monitoring Well <br />Probe(% <br />Methane <br />-Vol) <br />CO2 <br />(%-Vol) <br />Oxygen <br />(%-Vol) <br />Balance <br />(%-V 1) <br />Pressure <br />Inch WC <br />Note <br />SG -12 S <br />0.1 <br />0.6 <br />19.8 <br />79.5 <br />-0.53 <br />SG -121 <br />0.1 <br />0.6 <br />19.9 <br />79.4 <br />-0.62 <br />SG -12 D <br />0.2 <br />0.6 <br />19.8 <br />79.4 <br />-0.67 <br />SG -102 S <br />0.1 <br />0.8 <br />19.6 <br />79.5 <br />-2.45 <br />SG -1021 <br />0.1 <br />0.6 <br />20.2 <br />79.1 <br />-0.67 <br />SG -102 D <br />0.1 <br />0.3 <br />20.2 <br />79.4 <br />-0.84 <br />SG -103 S <br />0.1 <br />0.1 <br />20.1 <br />79.7 <br />-0.24 <br />SG -1031 <br />0.1 <br />0.4 <br />19.9 <br />79.6 <br />-0.06 <br />SG -103 D <br />0.1 <br />0.1 <br />20.3 <br />79.5 <br />-0.70 <br />SG -104 S <br />0.1 <br />0.1 <br />17.1 <br />82.7 <br />-0.60 <br />SG -1041 <br />0.1 <br />0.0 <br />20.3 <br />79.6 <br />-0.75 <br />SG -104 D <br />0.1 <br />0.4 <br />19.3 <br />80.2 <br />-0.70 <br />SG -105 S <br />0.1 <br />0.6 <br />19.2 <br />80.1 <br />-0.33 <br />SG -1051 <br />0.1 <br />0.4 <br />19.5 <br />80.0 <br />-0.60 <br />SG -105 D <br />0.1 <br />0.3 <br />19.7 <br />79.9 <br />-0.66 <br />SG -106 S <br />0.1 <br />0.4 <br />19.9 <br />79.6 <br />-0.41 <br />SG -1061 <br />0.1 <br />0.2 <br />20.1 <br />79.6 <br />-0.62 <br />SG -106 D <br />0.1 <br />0.3 <br />19.9 <br />79.7 <br />-0.72 <br />SG -107 S <br />0.1 <br />0.3 <br />19.8 <br />79.8 <br />-0.15 <br />SG -1071 <br />0.1 <br />0.3 <br />20.1 <br />79.5 <br />-0.25 <br />SG -107 D <br />0.1 <br />0.2 <br />20.2 <br />79.5 <br />-0.67 <br />SG -108 S <br />0.1 <br />0.4 <br />19.5 <br />80.0 <br />-0.24 <br />SG -1081 <br />0.1 <br />0.3 <br />19.5 <br />80.1 <br />-0.42 <br />SG -108 D <br />0.1 <br />0.2 <br />20.3 <br />79.4 <br />-1.04 <br />SG -109 S <br />0.1 <br />0.3 <br />19.5 <br />80.1 <br />-0.08 <br />SG -1091 <br />0.1 <br />0.3 <br />19.8 <br />79.8 <br />-0.58 <br />SG -109 D <br />0.1 <br />0.0 <br />21.5 <br />78.4 <br />-0.80 <br />SG -110 S <br />0.1 <br />0.4 <br />20.4 <br />79.1 <br />-0.47 <br />SG -1101 <br />0.1 <br />0.4 <br />20.6 <br />78.9 <br />-0.72 <br />SG -110 D <br />0.1 <br />0.1 <br />20.7 <br />79.1 <br />-0.41 <br />SG -111 S <br />0.1 <br />0.2 <br />20.1 <br />79.6 <br />-0.18 <br />SG -1111 <br />0.1 <br />0.4 <br />20.1 <br />79.4 <br />-0.75 <br />SG -111 D <br />0.1 <br />0.3 <br />20.5 <br />79.1 <br />-0.76 <br />SG -112 S <br />0.1 <br />0.5 <br />20.7 <br />78.7 <br />0.80 <br />SG -1121 <br />0.1 <br />0.5 <br />20.5 <br />78.9 <br />0.27 <br />SG -112 D <br />0.1 <br />0.5 <br />20.0 <br />79.4 <br />-0.46 <br />Revised 6-25-12 <br />N:\1Foothill\LFG Migration Monitoring\2025\2nd Qtr\ <br />FH -2nd Qtr LFG Perim Mig Monit 2025 Wells Sheet 1 of 3 <br />San Joaquin County <br />Public Works\Solid Waste <br />