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LANDFILL GAS MONITORING <br /> //GEM 500 CALIBRATION AND PERTINENT DATA <br /> Date: Site Name: �u � <br /> Technician: z, — Job No. <br /> WEATHER OBSERVATIONS <br /> Wind Speed: J-15--MPH Wind Direction: c l Barometric Pressure.-?'/'CZ"Hg <br /> Air Temperature: 5�'- OF General Weather Conditions: A',Q <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. &?J7 <br /> Calibration Gas: %CH4y %CO2 2,5--6) %02 <br /> Time CH4 CO2 02 <br /> �7 -0, 3�-v <br /> Post-monitoring Calibration Check <br /> Time CH4 I CO2 02 <br /> NOTES: <br /> Calibration Form GEM <br /> 12/12/03 9.08 AM <br />