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LANDFILL GAS MONITORING <br /> I GEM 500 CALIBRATION AND"PERTINENT DATA <br /> Date: 7n ( a.0 Site Name: R- <br /> Technician- 1 _ -- "� Job No. <br /> WEATHER OBSERVATIONS <br /> Wind Speed: MPH Wind Direction: � Barometric Pressure:2-1- "Ho <br /> Air Temperature: ( °F General Weather Conditions- <br /> CALIBRATION <br /> onditions:CALIB TION INFORMATION <br /> Pre-monitoring Caffbration Precision Check <br /> Procedure: Calibrate the instrument. Make a total of three measurements by alternating zern 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. c V ' Z� <br /> Calibration Gas: %CH4 '�%CO2 '_9S-<:, %02 �• a <br /> Time CH44 CO2 02 <br /> Post-monitorin Calibration Check <br /> Time CH4 cot 02 <br /> NOTES: <br /> Calibratlon Form GEM <br /> 12112/03 s:oa ars <br />