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LANDFILL GAS MONITORING <br /> GEM 500 CALIBRATION AND'PERTiNENT DATA <br /> Date: t-C' z`� Site Name: <br /> Technician: Job No. t <br /> WEATHER OBSERVATIONS <br /> Wind Speed: MPH Wind Direction: Barometric Pressure:2l-I "Hg <br /> Air Temperature: ^°F General Weather Conditions: <br /> CALIBRATION INFORMATION <br /> Pre-monitoring Caiibration 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. <br /> Calibration Gas: %C1-14 0D•L%CO2 �9S-,= %02 (f)- 0 <br /> Time CH44, CO2 02 <br /> Post-monitoring Calibration Check <br /> Time CH4 CO2 02 <br /> �z O - <br /> NOTES: <br /> 0211bra#lon Form GERM <br /> 121121{33 9-06 AM <br />