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LANDFILL GAS MONITORING <br /> GEM 500 CALIBRATION AND PERTINENT DATA <br /> Date: 3/Z z-/01, Site Name: <br /> Technician: Tob No_ 7�0 2aS' p <br /> WEATHER OBSERVATIONS <br /> Wind Speed;1J10 MPH Wind Direction: Eco Barometric Pressure:oi'. 7JHg <br /> Air Temperature.. 61 °F General Weather Conditions: 4-/ tg,:�,D <br /> CALIBRATION INFORMATION <br /> Pre-monitoring Calibration Precision Check <br /> Pmcedure;Calibrate the instrument_ Make a total of three measurements by altemating zero air <br /> and the calibration gas. Record the readings and calculate the a verage 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.- j <br /> Calibration Gas: %CH4 rd %CO2 %02 <br /> Time CH4 CO2 <br /> 02 <br /> r 015-( <br /> POst-monitorin Calibration Check <br /> Time CH4 COz <br /> 02 <br /> SO, 2— cc? <br /> NOTES: <br /> carbr2fti For,GEM <br /> 12JI2I03 9:08 AM <br /> i <br />