Which agency is responsible for setting the permissible exposure limits (PELs) for fumigants?

The Occupational Safety and Health Administration (OSHA) is the agency responsible for setting permissible exposure limits (PELs) for various hazardous substances in the workplace, including fumigants. These limits are designed to protect workers by ensuring that exposure to hazardous chemicals remains at safe levels. OSHA establishes PELs based on research and recommendations from various scientific sources, and they are implemented as part of workplace safety regulations.

In contrast, the Environmental Protection Agency (EPA) focuses on environmental protection and regulation of pesticides and toxic substances, but it does not specifically set PELs for workplace exposures. The Food and Drug Administration (FDA) oversees food safety and drug regulations, not occupational safety limits. The Department of Health Services (DHS), while involved in public health matters, does not specifically set exposure limits in a workplace context. Therefore, OSHA's role in establishing PELs makes it the correct answer for this question.