The HAZWOPER Standard applies to:

The HAZWOPER Standard is designed to address a broad range of operations involving hazardous substances, which is why the correct choice encompasses all the mentioned scenarios.

Cleanup operations at uncontrolled hazardous waste sites are explicitly covered under HAZWOPER, as these sites often pose significant risks to human health and the environment due to their unmanaged hazardous materials. The standard provides guidelines to ensure safety during assessment, cleanup, and restoration activities.

Corrective actions at RCRA (Resource Conservation and Recovery Act) sites also fall under the HAZWOPER framework. These sites involve the treatment, storage, and disposal of hazardous waste, where regulations aim to minimize risks associated with hazardous waste management and are implemented in conjunction with HAZWOPER training to ensure compliance and safety.

Emergency response operations for hazardous substance releases are another critical aspect of HAZWOPER. The standard outlines the necessary procedures and training for first responders to safely manage incidents involving hazardous materials, ensuring that personnel can effectively respond to emergencies while protecting themselves and the public.

Due to its comprehensive coverage of these various operations, the HAZWOPER Standard indeed applies to all the scenarios presented, making the choice encompassing every option the correct selection.