What type of chemicals would likely require a Level III response?

A Level III response is typically required for incidents involving highly toxic substances that pose a significant threat to public safety, health, and the environment. This level of response indicates that the materials involved are not only dangerous but also require extensive resources for containment, cleanup, and possibly evacuation or protective measures for nearby populations.

Highly toxic substances can include materials such as nerve agents, certain carcinogens, or other chemicals that can cause severe health effects upon exposure. These situations demand specialized equipment, highly trained personnel, and coordinated efforts across multiple agencies to manage the emergency effectively.

In contrast, the other types of chemicals listed—non-toxic household cleaners, moderately hazardous agricultural pesticides, and slightly hazardous industrial lubricants—do not pose the same degree of risk and generally necessitate a lower level of response. Their hazards can often be managed with fewer resources and do not usually require extensive protective measures beyond the capabilities of standard operational procedures. Therefore, a Level III response is specifically aimed at addressing the complexities and dangers associated with highly toxic substances.