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LANDFILL GAS MONITORING <br /> ` GEM 500 CALIBRATION AND PERTINENT DATA <br /> Date: 1 Site Name: <br /> Technician: Job No, M—L 01�S-'7. LYD <br /> WEATHER OBSERVATIONS <br /> Wind Speed: MPH Wind Direction: Barometric Pressure: B'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 aft-mating zero air <br /> and the calibration gas. Record the readings and caloulate the average algebraic difference <br /> F befK een 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. elm, 61010 <br /> Calibration Gas; %Cx SD.0 %CO2 '35 -D %02 b � <br /> Time CH4 002 02 <br /> Post- onitoring Calibration Check <br /> Time CH4 CO2 02 <br /> NOTES: <br /> Caiibmton Form GEM <br /> 42/12/03 9:08 AM <br />