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LANDFILL GAS MONITORING <br /> GEM. 500 CALIBRATION AND PERTINENT DATA <br /> Date: A-13-cGo A-13-cSite Name 1 "'f <br /> Technician: ,9) _yx,,aran Job No. �= f <br /> WEATHER OBSERVATIONS <br /> Wind Speed: ( MPH Wind Direction: Barometric Pressure- "Hg <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. <br /> Calibration Gas: %CH4 0/.0O2 %02 <br /> Time CH4 CO2 O2 <br /> Post- onitoring Calibration Check <br /> Time I CH4 CO2 O2 <br /> NOTES: <br /> Calibration Form GEM <br /> 12/12/03 9:08 AM <br />