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LANDFILL GAS MONITORING <br /> GEM 2000 CALIBRATION AND PERTINENT DATA <br /> Date: Site Name: <br /> Technician: �® 1 job No. <br /> WEATHER OBSERVATIONS <br /> Wind Speed: MPH Wind Direction: Barometric Pressure "H <br /> g <br /> LOIN <br /> Air Temperature: °F General Weather Conditions: x _ <br /> CALIBRATION INFORMATION <br /> Pre-monitoring.Calibration Precision Check <br /> Procedure: Calibrate the instrument. Make a total of three measurements by alternating zero air and the <br /> calibration gas. Record the readings and calculate th6.average algebraic difference betwee0t <br /> instrument reading and the calibration gas as a percentage. The calibration precision must be s than <br /> or equal to 2% of the calibration gas value. <br /> Instrument Serial <br /> Calibration Gas: %CH a %CO2 � %02 <br /> Time CHA _ —` --- CO2 ,02 <br /> Post-monitoring Calibration C heck <br /> Time CH4 ^CO2 02 <br /> NOTES: <br /> Calibration Form GEM <br /> 10/30!06 7:36 AM <br />