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CALIBRATION RECORD <br /> 1 Project Name <br /> • Project No <br /> ' Instrument <br /> Span Gas Used <br /> ' Span Setting Calibrated <br /> Date Calibrated by Compound Achieved Remarks <br /> Concentration YIN <br /> 1 <br /> TreaftiAKMb <br /> 1 <br /> li <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> • Environmental and Geotechnical Consultantsj <br /> 1 Notes <br /> 1) Instrument must be calibrated at beginning and ending of each 8-hour shift or use <br /> 2)Note which compound and concentration has been set for calibration(i e, benzene/52 6ppm)using designated span gas <br /> 1 <br />