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LANDFILL GAS MONITORING <br /> GEM 500 CALIBRATION AND PERTINENT DATA <br /> Date: Site Name: <br /> Technician: NAS < Job No. UTZD-?,n�S 3 <br /> WEATHER OBSERVATIONS <br /> Wind Speed: D") MPH Wind Direction: VJ Barometric Pressure: <br /> Air Temperature: (-D� "F General Weather Conditions: <br /> CALIBRATION INFORMATION <br /> Pre-monitoring Calibration Predsion Check <br /> Procedure: Calibrate the instrument. Make a total of three measurements by alternating zero air <br /> and the calibration gas. Record the readings and calculate the average algebraic difference <br /> between the instrument reading and the calibration gas as a percentage. The callbration <br /> precision must be less than or equal to 2% of the calibration gas value. <br /> instrument Serial No. <br /> Calibration Gas: %CH4SV-0 %CO2 %02 <br /> Time CH4 CO2 02 <br /> DO <br /> Post-monitoring Calibration Check <br /> I <br /> Time—I CH4 -1 CC2 02 <br /> NOTES: <br /> Calibration Form GEM <br /> 1 211 2103 9:08 AM <br />