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LANDFILL GAS MONITORING <br /> / GEM 500 CALIBRATION ANIS PERTINENT DATA <br /> Date: .3�3alOG Site Name:_. <br /> Technician: Job No. 672D20.575-,p / <br /> WEATHER OBSERVATIONS <br /> Wind Speed: ? MPH Wind Direction: Barometric Pressure- J&') �Hg <br /> Air Temperature: .SZ °F General Weather Conditions: <br /> CALIBRATION INFORMATION <br /> Pre-monitoring Calibration Precision Check <br /> PraceduM, Calibrate the instrument. flake a total of three measurements by altemating 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 Z% orthe.calibration gas value. <br /> Instrument Serial No. / <br /> Calibration Gas: %CH4 ,o %CO2 % <br /> lime C F14 CO2 <br /> 02 <br /> r'✓ <br /> Post-monitorin2 Cafibration Check <br /> Tm� CH4 CO2 <br /> �is3t� S?j, O2 <br /> NOTES: <br /> Carrbratlon Form GEM <br /> 12/121M 9:08 AM <br />