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TABLE 2 - Continued <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 -113 S <br />0.0 <br />0.6 <br />19.9 <br />79.5 <br />-0.61 <br />SG -1131 <br />0.0 <br />0.1 <br />20.7 <br />79.2 <br />-0.41 <br />SG -113 D <br />0.0 <br />0.2 <br />20.6 <br />79.2 <br />-0.17 <br />SG -114 S <br />0.0 <br />0.5 <br />19.9 <br />79.6 <br />-0.03 <br />SG -1141 <br />0.0 <br />0.4 <br />19.7 <br />79.9 <br />-0.08 <br />SG -114 D <br />0.0 <br />0.7 <br />19.8 <br />79.5 <br />-0.11 <br />SG -115 S <br />0.0 <br />0.7 <br />19.4 <br />79.9 <br />-0.55 <br />SG -1151 <br />0.0 <br />0.9 <br />19.8 <br />79.3 <br />-0.31 <br />SG -115 D <br />0.0 <br />0.5 <br />19.9 <br />79.6 <br />-0.28 <br />SG -116 S <br />0.0 <br />0.4 <br />19.9 <br />79.7 <br />-0.09 <br />SG -1161 <br />0.0 <br />0.5 <br />19.7 <br />79.8 <br />-0.20 <br />SG -116 D <br />0.0 <br />0.6 <br />19.4 <br />80.0 <br />-0.23 <br />SG -117 S <br />0.0 <br />0.4 <br />20.2 <br />79.4 <br />-1.39 <br />SG -1171 <br />0.0 <br />0.6 <br />20.4 <br />79.0 <br />-0.17 <br />SG -117 D <br />0.0 <br />0.3 <br />19.8 <br />79.9 <br />-0.24 <br />SG -118 S <br />0.0 <br />0.5 <br />20.1 <br />79.4 <br />-0.27 <br />SG -1181 <br />0.0 <br />0.4 <br />19.8 <br />79.8 <br />-2.46 <br />SG -118 D <br />0.0 <br />0.3 <br />20.4 <br />79.3 <br />-0.25 <br />SG -119 S <br />0.0 <br />0.2 <br />20.5 <br />79.3 <br />-0.15 <br />SG -1191 <br />0.0 <br />0.3 <br />20.4 <br />79.3 <br />-0.52 <br />SG -119 D <br />0.0 <br />0.4 <br />19.9 <br />79.7 <br />-0.49 <br />SG -120 S <br />0.0 <br />0.7 <br />18.7 <br />80.6 <br />-0.18 <br />SG -1201 <br />0.0 <br />0.6 <br />18.9 <br />80.5 <br />-0.21 <br />SG -120 D <br />0.0 <br />0.4 <br />19.1 <br />80.5 <br />-0.22 <br />SG -121 S <br />0.0 <br />0.4 <br />19.2 <br />80.4 <br />-0.19 <br />SG -1211 <br />0.0 <br />0.8 <br />19.7 <br />79.5 <br />-0.20 <br />SG -121 D <br />0.0 <br />0.5 <br />20.2 <br />79.3 <br />-0.42 <br />SG -122 S <br />0.0 <br />0.3 <br />19.1 <br />80.6 <br />-0.25 <br />SG -1221 <br />0.0 <br />0.5 <br />19.5 <br />80.0 <br />-0.23 <br />SG -122 D <br />0.0 <br />0.4 <br />19.7 <br />79.9 <br />-0.21 <br />SG -123 S <br />0.0 <br />0.2 <br />19.3 <br />80.5 <br />-0.08 <br />SG -1231 <br />0.0 <br />0.3 <br />18.9 <br />80.8 <br />-0.11 <br />SG -123 D <br />0.0 <br />0.7 <br />19.5 <br />79.8 <br />-0.15 <br />SG -124 S <br />0.0 <br />0.5 <br />20.1 <br />79.4 <br />-0.18 <br />SG -1241 <br />0.0 <br />0.6 <br />19.9 <br />79.5 <br />-0.22 <br />SG -124 D <br />0.0 <br />0.9 <br />20.4 <br />78.7 <br />-0.20 <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 2 of 3 Public Works\Solid Waste <br />