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LANDFILL GAS MONITORING <br /> GEM 500 CALIBRATION AND PERTINENT DATA <br /> Date: Site Name: <br /> Technician: <br /> jobNo. l <br /> WEATHER OBSERVATIONS <br /> Wind Speed;_/�/Q MPH Wind Direction: U Barometric Pressure:a�: 2Cyg <br /> Air Temperature:_ �2?, OF General Weather Conditions: 441 r4. <br /> CALIBRATION INFORMATION <br /> Pre-monitoring Calibration Precision Check <br /> Pracedure;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. 777e calibration <br /> precision must be less than or equal to 2% of the calibration gas value. <br /> Instrument Serial No. G / <br /> Calibration Lias: %CH4 66,10 %CO2 _ .ZZ�;y %02 f <br /> Time CH4 CO2 O2 <br /> Post-monitoring Caliibratron Check <br /> Time CH4 ' rQ2 <br /> f ra C�G �c r 2 `c? 02 <br /> NOTES: <br /> Catibravon Form GSM <br /> 'l2J12M 9;08 AM <br />