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TABLE 2 <br />First Quarter 2025 <br />Landfill Gas Perimeter Migration Monitoring Results <br />Foothill Sanitary Landfill <br />Monitoring Date: 1/22/25 Certified By: K. Espinoza <br />Monitoring Well <br />Probe(% <br />Methane <br />-Vol(% <br />CO2 <br />-Vol <br />Oxygen <br />%-V1(%-Vol) <br />Balance <br />Pressure <br />Inch WC <br />Note <br />SG -12 S <br />0.0 <br />0.6 <br />20.2 <br />79.2 <br />-0.30 <br />SG -121 <br />0.0 <br />0.5 <br />20.3 <br />79.2 <br />-0.27 <br />SG -12 D <br />0.0 <br />0.3 <br />20.3 <br />79.4 <br />-0.25 <br />SG -102 S <br />0.0 <br />0.6 <br />20.2 <br />79.2 <br />-0.63 <br />SG -1021 <br />0.0 <br />0.8 <br />20.0 <br />79.2 <br />-0.36 <br />SG -102 D <br />0.0 <br />0.5 <br />20.2 <br />79.3 <br />-0.73 <br />SG -103 S <br />0.0 <br />0.3 <br />20.4 <br />79.3 <br />-0.56 <br />SG -1031 <br />0.0 <br />0.4 <br />20.5 <br />79.1 <br />-0.37 <br />SG -103 D <br />0.0 <br />0.1 <br />20.9 <br />79.0 <br />-0.76 <br />SG -104 S <br />0.0 <br />0.2 <br />18.7 <br />81.1 <br />-0.19 <br />SG -1041 <br />0.0 <br />0.1 <br />20.9 <br />79.0 <br />-0.75 <br />SG -104 D <br />0.0 <br />0.5 <br />20.2 <br />79.3 <br />-0.79 <br />SG -105 S <br />0.0 <br />0.6 <br />19.9 <br />79.5 <br />-0.28 <br />SG -1051 <br />0.0 <br />0.7 <br />20.3 <br />79.0 <br />-0.58 <br />SG -105 D <br />0.0 <br />0.2 <br />20.9 <br />78.9 <br />-0.77 <br />SG -106 S <br />0.0 <br />0.1 <br />21.0 <br />78.9 <br />-0.49 <br />SG -1061 <br />0.0 <br />0.2 <br />20.7 <br />79.1 <br />-0.55 <br />SG -106 D <br />0.0 <br />0.2 <br />20.7 <br />79.1 <br />-0.86 <br />SG -107 S <br />0.0 <br />0.3 <br />20.2 <br />79.5 <br />-0.03 <br />SG -1071 <br />0.0 <br />0.3 <br />20.5 <br />79.2 <br />-0.21 <br />SG -107 D <br />0.0 <br />0.2 <br />20.5 <br />79.3 <br />-0.51 <br />SG -108 S <br />0.0 <br />0.2 <br />20.1 <br />79.7 <br />-0.23 <br />SG -1081 <br />0.0 <br />0.4 <br />19.8 <br />79.8 <br />-0.15 <br />SG -108 D <br />0.0 <br />0.1 <br />20.4 <br />79.5 <br />-0.65 <br />SG -109 S <br />0.0 <br />0.3 <br />20.1 <br />79.6 <br />-0.12 <br />SG -1091 <br />0.0 <br />0.3 <br />19.6 <br />80.1 <br />-0.24 <br />SG -109 D <br />0.0 <br />0.2 <br />20.3 <br />79.5 <br />-0.53 <br />SG -110 S <br />0.0 <br />0.4 <br />20.3 <br />79.3 <br />-0.02 <br />SG -1101 <br />0.0 <br />0.3 <br />20.5 <br />79.2 <br />-0.04 <br />SG -110 D <br />0.0 <br />0.0 <br />21.1 <br />78.9 <br />-1.09 <br />SG -111 S <br />0.0 <br />0.3 <br />20.5 <br />79.2 <br />-0.26 <br />SG -1111 <br />0.0 <br />0.5 <br />20.3 <br />79.2 <br />-0.08 <br />SG -111 D <br />0.0 <br />0.3 <br />20.7 <br />79.0 <br />-0.45 <br />SG -112 S <br />0.0 <br />0.5 <br />20.4 <br />79.1 <br />-0.08 <br />SG -1121 <br />0.0 <br />0.3 <br />20.8 <br />78.9 <br />-0.04 <br />SG -112 D <br />1 0.0 <br />1 0.4 <br />20.3 <br />79.3 <br />-0.48 <br />Revised 6-25-12 <br />NA1Foothill\LFG Migration Monitoring\2025\1st Qtr\ San Joaquin County <br />FH_1st Qtr LFG Perim Mig Monit 2025 Wells Sheet 1 of 3 Public Works\Solid Waste <br />