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4 <br /> d <br /> SEM (FORM 1 <br /> SURFACE EMISSIONS MONITORING <br /> CALIBRATION AND PERTINENT DATA <br /> Date: j_ Site Name: Jjr�/„.4,,., <br /> Inspector(s): h .1: Instrument:_; � S 6 <br /> WEATHER OBSERVATIONS <br /> Wind Speed: _MPH Wind Direction: 4. Barometric Pressure:_jc.j;r Hg <br /> Air Temperature: ss °F General Weather Conditions:41zZ _ <br /> CALIBRATION INFORMATION <br /> Pre-monitoring Calibration Precision Check <br /> Procedure:Calibrate the instrument. Make a total of three measurements by alternating aero air <br /> and the calibration gas. Record the readings and calculate the average algebraic difference <br /> between the instrument reading and the calibrafion gas as a percentage. The calibration <br /> precision must be less than or equal to 10%of the calibration gas value_ <br /> Instrument ID: 6S.Y211.1,&23 Cal Gas Concentration:gd_ppm <br /> Trial Zero Air Readl Cal Gas Readi Cal Gas Conc.—Cal Gas Readin <br /> 1 <br /> 2 <br /> 3 S'9 i <br /> Average Difference: <br /> Calibration Precision =Average Difference/Cal Gas Conc. X 100% <br /> X 100% <br /> Post-monitoring Calibration Check <br /> Zero Air Reading: ppm Cal Gas Reading: pm <br /> BACKGROUND CONCENTRATION CHECKS <br /> Upwind Location Description: Aa Reading:=ppm <br /> Downwind Location Description: N1,44 Reading:_,,_Ppm <br /> NOTES: <br />