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CM0 <br /> Personal Protective Equipment <br /> Management Program 2.15 <br /> not allow supplied air respirators (SARs) or self-contained breathing apparatus (SCBA). At no time will <br /> Level A work be performed without the consent of the CHSD and OM. <br /> The following conditions warrant the use of Level A protection: <br /> • Hazardous substances have been identified and require the highest level of protection for skin, <br /> eyes, and the respiratory system; <br /> • The atmosphere contains less than 19.5%oxygen or an atmosphere immediately dangerous to life <br /> and health (IDLH)that have not been ruled out; <br /> • Site operations involve a high potential for splash, skin immersion, or exposure to suspected skin <br /> hazards; <br /> • Direct-reading instruments indicate high levels of unidentified but potentially hazardous vapors or <br /> gases in the air (e.g., Total atmospheric readings on the Photoionization Detector (PID), Flame <br /> Ionization Detector (FID), and similar instruments indicate 500 to 1,000 ppm of unidentified <br /> substances); and <br /> • Direct-reading instruments are not available to test the air and suspected highly toxic substances <br /> may be present. <br /> It may be necessary to base the decision to use Level A protection on indirect evidence. Other conditions <br /> that may indicate the need for Level A protection include: <br /> • Confined spaces; <br /> • Sites containing known skin hazards; <br /> • Sites with no established history to rule out skin and other absorption hazards; <br /> • Site exhibiting signs of acute mammalian toxicity(e.g.,dead animals, illnesses associated with past <br /> entry into the site by humans); <br /> • Sites at which sealed drums of unknown materials must be opened; <br /> • Visible indicators such as leaking containers or smoking chemical fires; and <br /> • Extremely hazardous substances (e.g., cyanide compounds, concentrated pesticides, Department <br /> of Transportation Poison "A" materials, suspected carcinogens, and infectious substances) are <br /> known or suspected to be present, and skin contact is possible. <br /> 03/2025 Corporate Health and Safety Management Program I ROUX 18 <br />