Which of the following is NOT a responsibility of HAZMAT employees?

The responsibility of HAZMAT employees primarily revolves around the handling, documentation, and training regarding hazardous materials in compliance with regulatory standards. Each of those stated responsibilities—handling hazardous materials appropriately, documenting safety procedures, and training other employees—directly relates to ensuring safety and compliance in the management of hazardous substances.

On the other hand, performing vehicle maintenance in the transport fleet does not typically fall under the direct responsibilities of HAZMAT employees. While maintenance may be essential for safe transportation, it is more related to general vehicle operation and logistics rather than the specific management of hazardous materials. HAZMAT roles focus on what is necessary to ensure the safety and compliance of hazardous materials through training, documentation, and proper handling techniques. Thus, the responsibility that does not align with the HAZMAT employee’s role is vehicle maintenance.