Category II refers to a classification system used in various fields, including environmental science and regulatory frameworks. It typically denotes a level of risk or impact that is moderate, requiring specific management or oversight. This category often includes activities or substances that are not as hazardous as those in Category I but still necessitate attention to ensure safety and compliance. In the context of hazardous waste management, Category II materials may include certain chemicals or waste products that pose a lower risk to human health and the environment. These materials often require proper handling and disposal methods, but the regulations are less stringent compared to those for Category I substances.