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LANDFILL GAS MONITORING <br /> GEM 500 CALIBRATION AND PERTINENT DATA <br /> Date: 115,/6 Site Name: iG�UA—_z <br /> Technician: Job No. <br /> WEATHER OBSERVATIONS <br /> Wind Speed: 1-3 MPH Wind Direction: 5 Barometric Pressure: 3),a Ng <br /> Air Temperature: / °F General Weather Conditions: otxz <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 ca/ibratioh"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. -,-3z7 <br /> Calibration Gas: %CH4,Z0 %CO2 3s',d %02 <br /> Time CH4 CO2 02 <br /> Post-monitoring Calibration Check <br /> Time CH4 CO2 02 <br /> NOTES: <br /> Calibration Form GEM <br />