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LANDFILL GAS MONITORING <br /> GEM 500 CALIBRATION AND PERTINENT DATA <br /> Date: A i-L <br /> L Site Name: fy -,�i <br /> i a <br /> Technician: t O k Job No. — <br /> WEATHER OBSLRVATIONS <br /> Wind Speed: _MPH Wind Direction: Barometric Pressure <br /> Hg <br /> r <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 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� C7J <br /> Calibration Gas: %CH4¢ o%CO2 c,-�/002 <br /> Time CH4 CO2 O2 <br /> G)C�,f� <br /> Post-monitoring Calibration Check <br /> Time I CH4 CO2 O2 <br /> e <br /> NOTES. <br /> Calibration Form GEM <br /> 12/12/03 9:08 AM <br />