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LANDFILL GAS MONITORING <br /> GEM 500 CALIBRATION AND PERTINENT DATA <br /> Date: Site Name: r''W'LC,fc4 <br /> Technician: —AA JI6 IC'h Job No. <br /> WEATHER OBSERVATIONS <br /> Wind Speed: _MPH Wind Direction: 4 Barometric Pressure: 310"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. 13ecpr_d.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 %CO2 3s %02 c <br /> Time CH4 CO2 02 <br /> 3j0 <br /> Post-monitoring Calibration Check <br /> Time CH4 CO2 02 <br /> NOTES: <br /> Calibration Form GEM <br /> 6/23In4 in-aF ann <br />