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LANDFILL GAS MONITORING <br /> GEM 500 CALIBRATION AND PERTINENT DATA <br /> Date: off <br /> Site Name: <br /> Technician: (Ak-e- (�RIOAeS Job No. <br /> WEATHER OBSERVATIONS <br /> Wind Speed: -7 MPH Wind Direction: v Barometric Pressure: +• "Hg <br /> Air Temperature: >0 °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.___q( Id <br /> Calibration Gas: %CH4 orb %CO2 %02 <br /> Time CH4 CO2 02 <br /> 5�,0 35.E <br /> Post-monitoring Calibration Check <br /> Time CH4 CO2 O2 <br /> NOTES: <br /> Calibration Form GEM <br /> 6/23/04 10:46 AM <br />