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LANDFILL GAS MONITORING <br /> GEM 500 CALIBRATION AND PERTINENT DATA <br /> Date: 4 , D(,-,) Site Name: r, (I�,��fc) <br /> Technician: Ab'1 IJS I I cA Job No. <br /> WEATHER OBSERVATIONS <br /> Wind Speed: _MPH Wind Direction: Barometric Pressure: 1,0"H. <br /> Air Temperature: OF 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. <br /> Calibration Gas: %CH4_56 _ %CO2 3s %02 <br /> Time CH4 CO2 02 <br /> Post-monitoring Calibration Check <br /> Time CH4 CO2 02 <br /> NOTES: <br /> Calibration Form GEM <br /> sn.,vn4 1n•aF ann <br />