Final Answer:
At installations where firefighting is provided by contract, minimum staffing levels must be determined by a risk assessment accomplished by the authority having jurisdiction (AHJ).
Step-by-step explanation:
The authority having jurisdiction (AHJ) is responsible for ensuring that fire protection services, including staffing levels, meet the necessary safety standards. In installations where firefighting is outsourced through contracts, a risk assessment is conducted by the AHJ. This assessment evaluates various factors, such as the type of facility, potential hazards, occupancy, and the level of fire risk. Based on the risk assessment findings, the AHJ determines the minimum staffing levels required for effective fire protection and emergency response. This approach ensures that adequate resources are allocated to address specific risks and emergencies at the contracted facility.