What additional equipment is part of the Level C CPC ensemble?

The correct answer identifies that Level C Chemical Protective Clothing (CPC) ensembles include full-face air purifying respirators (APRs) as part of their equipment. Level C is used in situations where the concentration and type of airborne contaminants are known and can be controlled. The APR is crucial because it provides respiratory protection against specific chemicals in the environment.

In Level C situations, the use of full-face respirators is important for protecting the respiratory tract and eyes from chemical exposure, particularly when dealing with hazardous materials that could cause inhalation or contact injuries. This type of equipment is specifically designed to filter out contaminants from the air, allowing the wearer to breathe safely in environments where the level of contaminants is known to be above safe limits.

The other options do not accurately reflect the requirements of Level C CPC. For instance, positive pressure SCBA is utilized in more hazardous environments (Level A or sometimes Level B) where the respiratory hazards are unknown or cannot be managed with air-purifying devices. Standard respiratory masks alone would not provide adequate protection against the range of hazards typically encountered at this level. Thus, recognizing the importance of full-face APRs within the Level C framework is essential for ensuring safety in hazardous situations.