Which of the following actions is NOT recommended if hazardous material is suspected but not identified?

Engaging in chemical testing is not recommended if hazardous material is suspected but not identified because this action poses significant risks. Chemical testing often requires specialized knowledge, equipment, and safety precautions. If emergency responders attempt to conduct tests without knowing what material is present, they could inadvertently expose themselves to toxic substances or create a hazardous situation.

In contrast, utilizing local fire department resources, activating emergency response procedures, and referring to Guide Number 111 are appropriate actions. These strategies prioritize safety by leveraging trained professionals and established emergency protocols to manage the situation effectively. Engaging those with specific expertise and resources helps ensure that the response is thorough and minimizes risk to first responders and the public.