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OEt--TECt-1 <br /> DEL-TECH GEOTECHNICAL SUPPORT,INC. <br /> (209)232-7967 (OFFICE) cassandra@deltechl.com (EMAIL) <br /> LANDFILL GAS MONITORING - FIELD LOG SHEET 2026 <br /> CITY OF RIVERBANK WWTP / RIVERBANK, CA. <br /> CH4 CO2 02 N2 Temp VAC./PRES. WELL FIELD <br /> LOCATION DATE TIME % % % % de F IN-WATER DEPTH FT./IN COMMENTS TECH. <br /> SECOND QUARTER 2026 <br /> LFG#1A 6/16/2026 9:15 0.0% 0.8% 19.3% 75.9% 83.7 0.0 9.0' Baro.-29.80' A.M. <br /> 6/16/2026 9:20 0.0% 1.9% 18.3% 79.8% 83.7 0.0 9.0' <br /> LFG#1 B 6/16/2026 9:30 0.0% 1.7% 18.2% 80.1% 88.0 0.0 19.0' Baro.-29.80' A.M. <br /> 6/16/2026 9:35 0.0% 7.9% 10.9% 81.2% 88.0 0.0 19.0' <br /> LFG#2A 6/16/2026 9:44 0.0% 2.1% 18.3% 79.6% 85.0 0.0 9.0' Baro.-29.82' A.M. <br /> 6/16/2026 9:49 0.0% 2.6% 18.0% 79.1% 85.0 0.0 9.0' <br /> LFG#213 6/16/2026 9:55 0.0% 3.2% 17.0% 79.3% 91.6 0.0 19.0' Baro.-29.82' A.M. <br /> 6/16/2026 10:00 0.0% 3.9% 16.5% 79.6% 91.6 0.0 19.0' <br /> OFFICE 6/16/2026 10:15 0.0% 0.0% 20.3% 79.7% 76.0 N/A N/A Baro.-29.84' 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/WARM 75 29.92 <br /> Inventory Paper Red Pens Blue Pens Baking Soda Other <br /> Sample Technician Antonio Morales <br /> NOTES: <br />