Warning signs must be posted around which of the following storage areas?

The requirement for posting warning signs is specifically tied to the presence of hazardous materials, such as pesticides, in storage areas. Pesticides can pose significant risks to human health and the environment, requiring clear communication of these hazards to anyone who may come into contact with them.

Pesticide storage areas are subject to strict regulations to ensure safety. Warning signs serve to alert people to the potential dangers associated with the substances stored there, such as toxicity, volatility, or potential environmental harm. These signs help prevent accidental exposure and ensure that safety protocols are followed when working near these materials.

In contrast, while chemical mixing areas may also be hazardous, the primary focus of the question is on storage areas specifically dedicated to pesticides. Nutrient storage areas and water storage areas do not have the same regulatory requirements for warning signs pertaining to toxicity, as they typically do not contain the same level of risk associated with hazardous pesticides. Therefore, the emphasis on pesticide storage areas makes the posting of warning signs in those locations crucial for safety and compliance with pesticide regulations.