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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 Certified By: Meng Lo <br /> Monitoring Well Methane CO2 Oxygen Balance Pressure Note <br /> Probe (%-Vol) (%-Vol) (%-Vol) (%-Vol Inch WC <br /> SG-12 S 0.1 0.6 19.8 79.5 -0.53 <br /> SG-121 0.1 0.6 19.9 79.4 -0.62 <br /> SG-12 D 0.2 0.6 19.8 79.4 -0.67 <br /> SG-102 S 0.1 0.8 19.6 79.5 -2.45 <br /> SG-1021 0.1 0.6 20.2 79.1 -0.67 <br /> SG-102 D 0.1 0.3 20.2 79.4 -0.84 <br /> SG-103 S 0.1 0.1 20.1 79.7 -0.24 <br /> SG-1031 0.1 0.4 19.9 79.6 -0.06 <br /> SG-103 D 0.1 0.1 20.3 79.5 -0.70 <br /> SG-104 S 0.1 0.1 17.1 82.7 -0.60 <br /> SG-1041 0.1 0.0 20.3 79.6 -0.75 <br /> SG-104 D 0.1 0.4 19.3 80.2 -0.70 <br /> SG-105 S 0.1 0.6 19.2 80.1 -0.33 <br /> SG-1051 0.1 0.4 19.5 80.0 -0.60 <br /> SG-105 D 0.1 0.3 19.7 79.9 -0.66 <br /> SG-106 S 0.1 0.4 19.9 79.6 -0.41 <br /> SG-1061 0.1 0.2 20.1 79.6 -0.62 <br /> SG-106 D 0.1 0.3 19.9 79.7 -0.72 <br /> SG-107 S 0.1 0.3 19.8 79.8 -0.15 <br /> SG-1071 0.1 0.3 20.1 79.5 -0.25 <br /> SG-107 D 0.1 0.2 20.2 79.5 -0.67 <br /> SG-108 S 0.1 0.4 19.5 80.0 -0.24 <br /> SG-1081 0.1 0.3 19.5 80.1 -0.42 <br /> SG-108 D 0.1 0.2 20.3 79.4 -1.04 <br /> SG-109 S 0.1 0.3 19.5 80.1 -0.08 <br /> SG-1091 0.1 0.3 19.8 79.8 -0.58 <br /> SG-109 D 0.1 0.0 21.5 78.4 -0.80 <br /> SG-110 S 0.1 0.4 20.4 79.1 -0.47 <br /> SG-1101 0.1 0.4 20.6 78.9 -0.72 <br /> SG-110 D 0.1 0.1 20.7 79.1 -0.41 <br /> SG-111 S 0.1 0.2 20.1 79.6 -0.18 <br /> SG-1111 0.1 0.4 20.1 79.4 -0.75 <br /> SG-111 D 0.1 0.3 20.5 79.1 -0.76 <br /> SG-112 S 0.1 0.5 20.7 78.7 0.80 <br /> SG-1121 0.1 0.5 20.5 78.9 0.27 <br /> SG-112 D 0.1 0.5 20.0 79.4 -0.46 <br /> Revised 6-25-12 <br /> N:\1Foothill\LFG Migration Monitoring\2025\2nd Qtr\ San Joaquin County <br /> FH_2nd Qtr LFG Perim Mig Monit 2025 Wells Sheet 1 of 3 Public Works\Solid Waste <br />