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LANDFILL GAS MONITORING <br /> /GEM 500 CALIBRATION AND PERTINENT DATA <br /> Date: 3A7/6' Site Name: <br /> Technician; Job No. p7-00703570/ <br /> WEATHER OBSERVATIONS <br /> Wind Speed:_.�ice" pH Wind Direction: -50 Barometric Pressure;�7�-Hg <br /> Air Temperature:` °F General Weather Conditions: <br /> CALIBRATION,INFORMATION <br /> Pre-monitoring Calibration Prebision 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 svcrage 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. c-'f <br /> Calibration Gas: %CH4- 0 °/QCQ2 J970 %Q2 <br /> Time C H4 G02 02 <br /> J. �-R57-0 <br /> Post-monitoring Calibration Check <br /> Time CHI CO2 <br /> 02 <br /> NOTES: <br /> calibration Form GEM <br /> 12f12/03 9:08 AM <br />