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LANDFILL GAS MONITORING <br /> GEM 500 CALIBRATION AND PERTINENT DATA <br /> Date: Site Name: Q' <br /> Technician: Job Na. <br /> WEATHER OBSERVATIONS <br /> Wind Speed: D ) MPH Wind Direction: Barometric Pressure:�t-"Hg <br /> Air Temperature- (D's °F General Weather Conditions: <br /> CALIBRATION INIMORIVIATION <br /> Pre-monitoring Calibration Precision 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 calibration <br /> precision must be less than or equal to.2% ofthe calibration gas value. <br /> Instrument Serial No. (M 1 <br /> CalibrationGas: %CH •`' %CO2 �S `� %02 o.y' <br /> Time CH4 CO2 OZ <br /> Post-monitoring Calibration Check <br /> Time CH4 CO2 O2 <br /> NOTES: <br /> Caffbrdon Form GEM <br /> 12112JM P.,08 AM <br />