What should you do if already carrying a hazardous material and instructed to carry another?

When carrying a hazardous material, safety is the utmost priority, and carrying an additional hazardous material without proper procedures can create significant risks. Informing someone and refraining from loading the new material is the correct course of action because it ensures that the situation is assessed appropriately before any further actions are taken.

By notifying the appropriate personnel, you help to maintain safety protocols and prevent potential incidents that could arise from combining incompatible materials. This step also allows for proper risk management and adherence to regulations regarding the transport of hazardous materials, which is crucial for the safety of yourself and others. It avoids any situation where dangerous interactions between the materials could occur, thereby potentially preventing accidents, spills, or exposures.

The other options do not prioritize safety adequately. Simply loading the new material on top of the existing one could lead to unforeseen dangers due to incompatibility. Discarding the first material neglects proper disposal protocols and could lead to environmental issues. Completing the delivery without addressing the situation first could compound risks already present. Therefore, the best action is to report the situation and ensure that all materials can be handled safely.