Lower Tier is defined as an area where exposures may be incurred by people who have no knowledge or control of the hazard. Which option best represents this definition?

Lower Tier is defined as an area where exposures may be incurred by people who have no knowledge or control of the hazard. Which option best represents this definition?

• A. Upper Tier
• B. Lower Tier
• C. Non-Hazardous Exposures
• D. Ground Level Hazard Emitters

Answer: (B)

When organizing exposure control, areas are described by who may be exposed and how much control they have over the hazard. This description matches a zone meant for people who have no knowledge or control of the hazard, i.e., a lower-tier area. It specifically names the group at risk as untrained or unaware, so exposures can occur without deliberate precautions by those individuals. The term upper tier would imply a zone where more knowledge or control is present, which isn’t what the statement describes. Non-hazardous exposures doesn’t refer to a zone of exposure, and ground level hazard emitters describe the source rather than the setting of exposure. So the term that best fits the definition is the lower tier.

When organizing exposure control, areas are described by who may be exposed and how much control they have over the hazard. This description matches a zone meant for people who have no knowledge or control of the hazard, i.e., a lower-tier area. It specifically names the group at risk as untrained or unaware, so exposures can occur without deliberate precautions by those individuals. The term upper tier would imply a zone where more knowledge or control is present, which isn’t what the statement describes. Non-hazardous exposures doesn’t refer to a zone of exposure, and ground level hazard emitters describe the source rather than the setting of exposure. So the term that best fits the definition is the lower tier.