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.r�ps�. if" _�•�. � iL i. <br /> 3. NE <br /> Tustrument and Date Action Level Frequency/Duration <br /> of Calibration (Ambient Air) of Air Monitoring Action <br /> OZ meter Less than 19.5%OZ Do not enter <br /> More than 23%Oy <br /> 4. Pjhx r%tru gents N E <br /> Action Level <br /> Instrument and Date (Breathing Zone/ Duration/Frequency <br /> of Calibration Ambient Air) of Air Monitoring Action <br /> Date <br /> Draeger pump/tubes <br /> Radiation monitor <br /> Heal stress meter <br /> Noise meter <br /> 1425 meter <br /> pH analyzer <br /> Others <br /> B. AIR MOIVITORINQ FQR_UNKNOWN CONTAMINANTS For totally unknown contaminants, thr <br /> following levels of protection must be utilized. <br /> PID or FID in Breathing 7oue <br /> Readin [or one minute <br /> Background Level D <br /> >0-5 ppm above background Level C }f <br /> 5-500 ppm above background Level B <br /> 500.1,000 ppm above.background Level A <br /> i.� <br /> 1G <br />