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Monitoring Date: 5/6/2025 Certified By: Meng Lo <br />Monitoring Well Methane CO2 Oxygen Balance Pressure <br />Probe (%-Vol)(%-Vol)(%-Vol)(%-Vol)(Inch WC) <br />SG-113 S 0.1 0.7 19.4 79.8 -0.39 <br />SG-113 I 0.1 0.3 20.5 79.1 -0.30 <br />SG-113 D 0.1 0.5 20.3 79.1 0.28 <br />SG-114 S 0.1 0.4 19.3 80.2 -0.40 <br />SG-114 I 0.1 0.3 19.8 79.8 0.09 <br />SG-114 D 0.1 0.3 19.8 79.8 -0.24 <br />SG-115 S 0.1 0.6 18.6 80.7 -0.38 <br />SG-115 I 0.1 0.5 19.6 79.8 0.18 <br />SG-115 D 0.1 0.3 20.3 79.3 0.22 <br />SG-116 S 0.1 0.3 19.7 79.9 0.06 <br />SG-116 I 0.1 0.4 19.9 79.6 0.37 <br />SG-116 D 0.1 0.4 19.9 79.6 0.35 <br />SG-117 S 0.1 0.1 20.8 79.0 -1.50 <br />SG-117 I 0.1 0.3 20.3 79.3 -0.15 <br />SG-117 D 0.1 0.4 20.0 79.5 -0.05 <br />SG-118 S 0.1 0.5 19.6 79.8 -1.20 <br />SG-118 I 0.1 0.5 19.6 79.8 -3.30 <br />SG-118 D 0.1 0.2 20.5 79.2 0.25 <br />SG-119 S 0.1 0.3 19.8 79.8 0.11 <br />SG-119 I 0.1 0.3 20.0 79.6 0.18 <br />SG-119 D 0.1 0.3 19.9 79.7 0.07 <br />SG-120 S 0.0 0.4 20.0 79.6 0.14 <br />SG-120 I 0.0 0.4 20.4 79.2 0.24 <br />SG-120 D 0.0 0.3 20.3 79.4 0.28 <br />SG-121 S 0.0 0.0 21.3 78.7 0.30 <br />SG-121 I 0.0 0.0 21.2 78.8 -0.14 <br />SG-121 D 0.0 0.2 20.2 79.6 0.12 <br />SG-122 S 0.0 0.2 19.3 80.5 0.14 <br />SG-122 I 0.0 0.2 20.1 79.7 0.17 <br />SG-122 D 0.0 0.3 20.4 79.3 0.11 <br />SG-123 S 0.0 0.3 20.3 79.4 -0.39 <br />SG-123 I 0.0 0.3 20.4 79.3 0.16 <br />SG-123 D 0.0 0.3 20.5 79.2 -0.08 <br />SG-124 S 0.0 0.2 20.8 79.0 0.07 <br />SG-124 I 0.0 0.2 20.6 79.2 0.32 <br />SG-124 D 0.0 0.2 20.4 79.4 -0.15 <br />Note <br />TABLE 2 - Continued <br />Landfill Gas Perimeter Migration Monitoring Results <br />Foothill Sanitary Landfill <br />Second Quarter 2025 <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 2 of 3 San Joaquin County <br />Public Works\Solid Waste