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`. *./ <br /> Hazard Level Survey Analyzer Identified Air Task Specific Requirements <br /> Reading a Containment b <br /> Level D < 1 ppm <'/h PEL(TWA) Routine material handlin <br /> Level C <5 ppm <5 times the PEL Sampling containers of known materials. <br /> (TWA)&<PEL Opening or unloading hazardous waste <br /> C container for r ac <br /> Level B < 500 ppm <IDLH Sampling containers of unknown materials <br /> of high or low volatility. High hazard spill <br /> or emergency response situations. High <br /> robability of skin hazard. <br /> Level A >Soo ppm At the IDLH or Extremely hazardous emergency response <br /> greater situations involving materials whose gases <br /> or vapors can be absorbed through the skin <br /> or can damage the skin. <br /> "Note: <br /> IDLH—Immediately Dangerous to Life and Health,a maximum airborne contaminant concentration from <br /> which,in the event of a respirator failure,one could escape within 30 minutes without experiencing any <br /> escape-impairing or irreversible health effects. <br /> (a) The analytical response of a suitably calibration checked Survey Analyzer(i.e. one typically <br /> employing either a flame ionization detector[FID],or a photo ionization detector[PID],or both) <br /> —in all cases,with the analyzer reading out in units of parts per million by volume. <br /> Note: The FID must have been calibration checked using a methane standard;and the PID,using <br /> an isobutylene standard. <br /> (b) If the specific potentially toxic contaminant can be identified,then the indicated readings on the <br /> Survey Analyzer must have been developed after applying the analyzer manufacturer's Relative <br /> Response Factor for that specific contaminant. <br /> In <br />