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LANDFILL GAS MONITORING <br /> GEM 500 CALIBRATION AND PERTINENT DATA <br /> Date: Site Name: c` f t1 <br /> Technician: Job No. <br /> WEATHER OBSERVATIONS <br /> Wind Speed: 3 MPH Wind Direction: U" Barometric Pressure: 2q '1"Hg <br /> Air Temperature: __Li±2�°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. 81 Ro <br /> Calibration Gas: %CH4_!�70 %CO2 %02 <br /> Time CH4 CO2 <br /> 02 <br /> Post-monitoring Calibration Check <br /> Time CH4 CO2 02 <br /> NOTES: <br /> Calibration Form GEM <br /> 6/23/04 10:46 AM <br />