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U.S. DOT/PHMSA (PHH-10)
1200 New Jersey Avenue
SE East Building, 2nd Floor
Washington, DC 20590
1-800-HMR-4922
1-800-467-4922
For Washington, DC / Metro area residents: 202-366-4488

Hazardous Materials Information Center

This is a list of links to contacts for the various groups under this topic (international, interpretations, Preemptions, etc)...

Special Permits

202-366-4535

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202-366-4512
202-366-4535

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