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LANDFILL GAS MONITORING <br /> GEM 500 CALIBRATION AND PERTINENT DATA <br /> Date: 11;47106 Site Name: <br /> Technician: Job No. <br /> WEATHER OBSERVATIONS <br /> Wind Speed: J'- MPH Wind Direction: 5W Barometric Pressure: /2"Hg <br /> Air Temperature: 16D OF General Weather Conditions: OQyt�lc"I . <br /> CALIBRATION INFORMATION <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% of the calibration gas value. <br /> Instrument Serial No. 9'327 <br /> Calibration Gas: %CH4 %CO2 %02 <br /> Time CH4 O2 <br /> 05co ( ��CO2 <br /> 3 <br /> Post-monitoring Calibration Check <br /> Time I CH4 CO2 O2 <br /> NOTES: <br /> Calibration Form GEM <br />