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L21 <br /> LANDFILL GAS MONITORING <br /> GEM 500 CALIBRATION AND PERTINENT DATA <br /> Date: lot, Site Name: —1*a 9r4 - <br /> Technician: Job No. <br /> WEATHER OBSERVATIONS <br /> Wind Speed: 06''P MPH Wind Direction: Barometric Pressure: V.R''S"Hg <br /> AIr Temperature: CO"I --,,-, OF General Weather Conditions: <br /> CALIBRATION INFORMATION <br /> Pre-monitoring Calibration Precision Check <br /> Procedure: Calibrate the instrument. Make a total ofthree 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.Ci 5 9 c) <br /> Calibration Gas: %CJi4�D °/®CO2 35 0 %02 <br /> TIFn C!f4 C'02 O2 <br /> YQ{ 3, <br /> Post-monitorin Calibration Check <br /> Timej CH4 CO2 02 <br /> ao <br /> NOTES: <br /> Caitbration Forst GEM <br /> 92(421D3 9.08 AM <br />