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SEM FORM 1 <br /> SURFACE EMISSIONS MONITORING <br /> CALIBRATION AND PERTINENT DATA <br /> Date:/Q'Z/_0S Site Name: c6rn6l IJ 6" <br /> Technician: 1`°/cAa G4(/ttt3 instrument:6Al68 <br /> Job No. AQ/071,bl- <br /> WEATHER OBSERVATIONS <br /> Wind Speed: _MPH Wind Direction:__91�j_ Barometric Pressure: 303 "WC <br /> Air Temperatdre: �'F General Weather Conditions: �00C <br /> CALIBRATION INFORMATION <br /> Pre-monitoring Calibration Precision Check <br /> Procedure: 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. The calibration <br /> precision must be less than or equal to 10%of the calibration gas value. <br /> Instrument Serial No. Cal Gas Concentration: 5ft pprn <br /> Trial Zero Air Readin Cal Gas Reading Cal Gas Conc.—Cal Gas Readin <br /> 1 0 T60 6 <br /> 2 ® 4562 2 <br /> 3 C7 E�A3 <br /> Average Difference: (j 7 <br /> Calibration Precision =Average Difference/Cal Gas Conc. X 100% <br /> to X100% <br /> 7 % <br /> Post-monitoring Calibration Check <br /> Zero Air Reading:____0 ppm Cal Gas Reading:_2'Z,— Pm <br /> BACKGROUND CONCENTRATION CHECKS <br /> Upwind Location Description: Reading: ppm <br /> Downwind Location Description: Reading:__ppm <br /> NOTES: <br />