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[Header] PHMSA - U.S. Department of Transportation - Pipeline and Hazardous materials Safety Adminis
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Hazardous Substance
Hazmat Term
A material listed in Appendix A to ยง 172.101 and the quantity in one package equals or exceeds the reportable quantity (RQ). Material may be in solution or mixture. This definition does not apply to petroleum (lubricants or fuel) products.
Additional Info/Example:

Note: For radionuclides, refer to Table 2 of Appendix A to
the HMT.

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