Emergency responders trained to the HAZWOPER 40-hour, Operations or Technician level training requirements should already understand the proper methods of personal protective equipment (PPE) selection. With this in mind, the Incident Commander (IC) shall ensure that the following procedures are followed:
- The IC shall ensure that everyone entering the Warm Zone and Hot Zone are wearing the predetermined PPE.
- The IC shall ensure that if vapor concentrations are unknown, the product vapors are hazardous at there current level or if the oxygen concentration is not between 19.5% to 23.5%, an approved supplied-air respirator is used by emergency responders.