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LANDFILL GAS MONITORING <br /> GEM 500 CALIBRATION AND PERTINENT DATA <br /> Date: 'Z 1b lv Site Name: <br /> Technician: Job No. �7�.� �u� <br /> WEATHER OBSERVATIONS <br /> Wind Speed: 03 MPH Wind Direction: `^J Barometric Pressure: 3L,),OI'Hg <br /> Air Temperature:�_°F General Weather Conditions: CA-` <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.t1kk lbtQo <br /> Calibration Gas: %CH4 %CO2 2� %02 6 <br /> Time CH4 CO2 02 <br /> C ;C) `b a, <br /> ED- <br /> Post-monitoring Calibration Check <br /> Time CH4 CO2 \ 02 <br /> NOTES: <br /> Calibration Form GEM <br /> 1 211 2/03 9:08 AM <br />