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LANDFILL GAS MONITORING <br /> GEM 500 CALIBRATION AND PERTINENT DATA <br /> Date: <br /> Site Name: 0700 a d51;5,-00 <br /> Technician: Job No. <br /> WEATHER OBSERVATIONS <br /> Wind Speed: "d MPH Wind Direction. Sr`e�� Barometric Pressure��Hg <br /> Air Temperature:--�°F General Weather Conditions: <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 anal calculate the average algebraic difference <br /> between the instrument reading and the oallbration 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, 3CG <br /> Calibration Gas: %CH4 ��D %CO2 �Q %02 <br /> Tirn e CH4 <br /> CC32 02 <br /> Post-monitorin Caii6 anon Check <br /> i 1me I CH4 CO2 <br /> 2207 02 <br /> NOTES: <br /> Cafibratlori Form GENT <br /> 1}12/03 2.06 AM <br /> a <br /> c�� <br />