What is a key feature of a Level II HazMat situation?

A key feature of a Level II HazMat situation is indeed the need for evacuation of areas affected by moderately hazardous substances. In these situations, the potential risks to public health and safety are significant enough to warrant the evacuation of individuals from the affected zones. This level reflects a more serious threat, where moderately hazardous materials can pose health risks if exposure occurs, thus necessitating a precautionary approach.

In contrast, the other options describe scenarios that do not align with the characteristics of a Level II HazMat event. For instance, the absence of specialized equipment is not a feature of a Level II situation; instead, responders typically require certain tools and technologies to manage the hazards appropriately. Likewise, minimal decontamination would not be sufficient in a scenario involving moderately hazardous substances, as thorough decontamination processes are often essential to ensure public safety. Lastly, the idea that first responders can manage the situation alone does not accurately reflect the complexity and potential severity of a Level II event, which often requires the involvement of specialized teams and resources to ensure an effective response.