Who may order a person to cease the operation of unsuitable equipment or facilities?

The correct response is that the commissioner or director has the authority to order a person to cease the operation of unsuitable equipment or facilities. This role typically encompasses regulatory enforcement responsibilities, which include ensuring compliance with safety and operational standards within their jurisdiction.

The commissioner or director is tasked with overseeing that public health and safety regulations are upheld, which includes taking action against entities that operate unsuitable or hazardous equipment and facilities. This ability to issue commands to cease operations is an essential part of maintaining the integrity of environmental regulations and protecting the community at large.

The other options listed do not hold the same level of authority or specific mandate concerning the regulation of equipment or facility operations. While entities such as county counsel or the district attorney may play roles in enforcement of other legal aspects, including prosecuting violations, they do not have direct operational oversight regarding equipment safety in the same manner as the commissioner or director. The Board of Supervisors may have authority in local legislation or policy-making but typically does not engage directly with operational enforcement issues like this scenario describes.