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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Massachusetts' Definitions of Hazardous Materials

Notice of administrative determination of preemption.

The Federal Hazmat Law does not preempt the definitions of "hazardous material" in M.G.L. chs. 21 E and 21 K. As applied and enforced, the challenged provisions of Massachusetts' laws are not an "obstacle" to accomplishing and carrying out the Federal Hazmat Law, the HMR, or a hazardous materials transportation security regulation or directive issued by the Secretary of Homeland Security. Because a regulated entity may comply with the State and Federal requirements at the same time the Massachusetts' laws are not preempted under the "dual compliance" test. These definitions and State requirements also do not concern any of the five subject areas in which State Authority is expressly preempted by the Federal Hazmat Law, and State enforcement of these laws does not otherwise frustrate Congressional intent.

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