Final answer:
The statement 'hazardous materials must be filed with the state' is False. Hazardous materials are regulated by the DOT and EPA, but the filing requirement may vary by state.
Step-by-step explanation:
The statement 'hazardous materials must be filed with the state' is False.
Hazardous materials are regulated by the United States Department of Transportation (DOT) and the Environmental Protection Agency (EPA) through their respective regulations. Depending on the type and quantity of hazardous materials, they may require special handling, storage, transportation, and disposal methods.
However, the requirement to file hazardous materials with the state may vary depending on the specific state's regulations. Some states may have additional reporting or permitting requirements, while others may rely on federal regulations. It is important to consult the regulations of the specific state in question to determine the filing requirements for hazardous materials.