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121 <br /> LANDFILL GAS MONITORING <br /> OEM 500 CALIBRATION AND PERTINENT DATA <br /> Date: Oto Site Name: 'l` <br /> Technician: Job No. <br /> WEATHER OBSERVATIONS <br /> Wind Speed: 00- 'lP MPH Wind Direction: Barometric Pressure: �•�'''r"Hg <br /> Air Temperature: Utz j --.-. 'F General Weather Conditions: X))L'-( Ct�D:� <br /> CALIBRATION INFORMATION <br /> Pre-monitoring Calibration Precision Check <br /> Procedure: Calibrate the instrument. Make a total ofthree 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.Cw M 519"', <br /> Calibration Gas: %CH,4 ,'-51>D %CO2 350 %02 <br /> TIme C H4 C'02 02 <br /> Post-rnonitorin Calibration Check <br /> Time I CH4 CO2 02 <br /> ir&3� L-t`f_ pfy•`� ° <br /> NOTES: <br /> Gaitbra#ton Forth GEM <br /> 92/47/03 9:08 AM <br />