What constitutes a “hazardous substance” in the context of fuel storage?

A "hazardous substance" is defined as any material that can pose a potential threat to human health or the environment if it is released or improperly managed. This broad definition encompasses a wide range of substances, including chemicals that may be toxic, corrosive, reactive, or flammable. The key aspect is the potential risk associated with the substance, rather than solely its physical properties or the quantity present.

In this context, it is crucial to understand that hazardous substances are not limited to those that are toxic to humans or only dangerous at high concentrations. A substance can be classified as hazardous due to various attributes, such as its environmental impact, ability to cause health problems upon exposure, or propensity to create dangerous situations when released. This recognition of a wider array of risks emphasizes the importance of safety measures and regulations in fuel storage.

By identifying option A as the correct answer, the definition aligns with established regulatory frameworks that govern the management of hazardous materials.