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LANDFILL GAS MONITORING <br /> GEM 500 CALIBRATION AND PERTINENT DATA <br /> Date: <br /> Site Name: a_ <br /> Technician: Job No. D'C�91On <br /> WEATHER OBSERVATIONS <br /> Wind Speed:0-6 MPH Wind Direction: Barometric Pressure <br /> Z�g <br /> Air Temperature:!� OF General Weather Conditions: <br /> CALIBRATION INFORMATION <br /> Pre-monitoring Calibration Precision Check <br /> Procedure. Calibrate the instrument. Make a total of three measurements by altemating 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%of the calibration gas value. <br /> Instrument Serial No. <br /> Calibration Gas: %CH4CD0,0%CO2 ,® %02 <br /> Time CH4 CO2 02 <br /> Post-monitoring Calibration Check <br /> Time CH4 CO2 O2 <br /> NOTES: <br /> Cdbration Porn GEM <br /> 1242103 9.08 AM <br />