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17EL-TECH! <br /> DEL-TECH GEOTECHNICAL SUPPORT,INC. <br /> (209)232-7967 (OFFICE) cassandra@deltech1.com (EMAIL) <br /> LANDFILL GAS MONITORING - FIELD LOG SHEET 2026 <br /> CITY OF RIVERBANK WWTP / RIVERBANK, CA. <br /> CH4 CO2 02 N2 Temp VAC./FRES. WELL FIELD <br /> LOCATION DATE TIME % % % % COMMENTS <br /> de F IN-WATER DEPTH FT./IN. TECH. <br /> SECOND QUARTER 2026 <br /> LFG#1A 4/23/2026 9:30 0.0% 6.8% 12.1% 81.0% 73.0 0.0 9.0' Baro.-29.94' A.M. <br /> 4/23/2026 9:35 0.0% 3.5% 16.7% 79.8% 73.0 0.0 9.0' <br /> LFG#1 B 4/23/2026 9:42 0.0% 0.1% 20.7% 79.2% 69.0 0.0 19.0' Baro.-29.94' A.M. <br /> 4/23/2026 9:47 0.0% 1 7.3% 12.0% 80.7% 1 68.0 0.0 19.0' <br /> LFG#2A 4/23/2026 9:54 0.0% 2.6% 18.0% 79.4% 72.0 0.0 9.0' Baro.-29.96' A.M. <br /> 4/23/2026 10:01 0.0% 2.0% 19.0% 79.0% 71.0 0.0 9.0' <br /> LFG#2B 4/23/2026 10:07 0.0% 0.1% 20.5% 79.4% 75.0 0.0 19.0' Baro.-29.96' A.M. <br /> 4/23/2026 10:12 0.0% 3.3% 17.2% 79.0% 75.0 0.0 19.0' <br /> OFFICE 4/23/2026 10:20 0.0% 0.0% 20.4% 79.7% 71.0 N/A N/A Baro.-29.96' A.M. <br /> Flare Station Measurements Ambient Conditions <br /> Intake Pressure N/A Stack temp. N/A Weather Temp.(F) Pressure <br /> Exhaust Pressure N/A Flow rate N/A CLEAR/COLD 65 29.94 <br /> Inventory Paper Red Pens Blue Pens Baking Soda Other <br /> Sample Technician Antonio Morales <br /> NOTES: <br />