Pipeline and Hazardous Materials Safety Administration

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• Recent Changes in Rules and Regulations



• Conferences, Training Seminars, and Meetings



• PHMSA's Office of the Chief Counsel (external link)



• Hazmat Appeal Decisions



• Preemption Documents



• Hazmat Interpretations Issued by the Office of the Chief Counsel



• Letters of Interpretation (Clarifications)



• Interpretations sorted by corresponding month



• Informal Hazmat Interpretations Issued by the Office of the Chief Counsel (external link)



• Visit e-Hazmat to make on-line payments for civil and ticket penalties and FOIA requests.



• Training Information



• Special Permits and Approvals



• Current and Frequently Requested Special Permits Contains copies of the original documents including signature and date.



• Got A Question?



• Hazardous Materials Incident Summary Statistics, Data, and Biennial Reports



• Risk Management



• Available Documents and Files



• Hazmat Enforcement



• News in Brief