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Corrol Hollow,1162 <br />LANDFILL GAS MONITORING <br />GEM 2000 CALIBRATION AND PERTINENT DATA <br />DATE: 07/28/2011 <br />TECHNICIAN: Mcalmes <br />TEMPERATURE: 90 <br />BAR. PRESSURE: 29.50 <br />WEATHER: Clear <br />WIND DIRECTION: East SPEED: 3 <br />SITE ID: 1,162 <br />JOB NO.: <br />Pre -monitoring Calibration Precision Check <br />Procedure: Calibrate the instrument. Make a total of three measurements by alternating zero air and the <br />calibration gas. Record the readings and calculate the average algebraic difference between the instrument <br />reading and the calibration gas as a percentage. The calibration precision must be less than or equal to 2% of <br />the calibration gas value. <br />Instrument Type: GEM 2000 Instrument Serial No. 8238 <br />Calibration Gas: <br />CH4 % <br />CO2 % <br />02% <br />15.0 <br />15.0 <br />4.0 <br />Pre-monitorine Calibration Check <br />Time <br />CH4 % <br />CO2 % <br />02% <br />09:30:00 AM <br />15.0 <br />15.0 <br />4.0 <br />Post-monitorine Calibration Check <br />Time <br />CH4 % <br />CO2 % 02% <br />04:49:23 PM <br />15.0 <br />15.0 4.0 <br />COMMENT 1: <br />COMMENT 2: <br />REVIEWED BY: DATE: <br />