When shipping hazardous materials, what must the shipper certify?

The shipper must certify that the hazardous materials have been packaged according to the regulations. This certification is crucial because it ensures that the packaging meets the safety standards set by the Department of Transportation (DOT) and other regulatory bodies. Properly packaging hazardous materials helps prevent leaks, spills, and accidents during transport, which is vital for protecting public safety and the environment.

Certifying compliance with regulations also involves confirming that the materials have undergone the necessary assessments regarding their classification, labeling, and containment. This certification is often reflected in shipping papers—documents that accompany the hazardous materials and provide critical information to all parties involved in the transportation process, including carriers and emergency responders.

The other options do not accurately represent the shipper's responsibilities under HAZMAT regulations. For instance, stating that the materials can be packed in any manner does not reflect the strict guidelines that must be followed. Acknowledging the carrier is aware of all contents does not encompass the comprehensive requirements for safety and compliance. Additionally, certifying that the shipment is not hazardous waste does not pertain directly to the required certification for shipping hazardous materials. Therefore, the requirement to certify that packaging complies with established regulations is essential for safe and legal transportation.