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PHMSA Interpretive Letters

Mitchell, Williams, Selig, Gates & Woodyard,...

Transportation/Hazardous Materials: Pipeline and Hazardous Materials Safety Administration Interpretive Letter Addressing Wet...

The United States Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in a June 10th interpretive letter the application of Hazardous Materials Regulations (“HMR”) applicable to wet batteries...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Transportation/Hazardous Materials: Pipeline and Hazardous Materials Safety Administration Interpretive Letter Addressing...

The Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in a July 16th Interpretive Letter the application of the federal Hazardous Materials Regulations (“HMR”) applicable to: …the size of a...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Transportation/Hazardous Materials: Pipeline and Hazardous Materials Safety Administration Interpretive Letter Addressing Training...

The Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in a November 22, 2022, Interpretive Letter the application of the Hazardous Materials Regulations to hazardous materials training for a forklift...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Transportation/Hazardous Materials: Pipeline and Hazardous Materials Safety Administration Interpretive Letter Addressing Medical...

The United States Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in a January 2nd interpretive letter a question regarding the application of the Hazardous Materials Regulations (“HMR”) to...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Transportation/Hazardous Materials: U.S. Pipeline and Hazardous Materials Safety Administration Interpretive Letter Addressing...

The United States Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in a January 17th letter a question regarding the applicability of the Hazardous Materials Regulations (“HMR”) applicable to the...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Transportation/Hazardous Materials: Pipeline and Hazardous Materials Safety Administration Guidance Letter Addressing Cargo Tank...

The United States Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in a December 6th letter the Hazardous Materials Regulation (“HMR”) applicable to the marking requirements for a Department of...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Transportation/Hazardous Materials: Pipeline and Hazardous Materials Safety Administration Addresses Question Involving MC 300...

The United States Department of Transportation Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in a November 26th letter a question addressing the Hazardous Materials Regulations (“HMR”) pressure...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Transportation/Hazardous Materials: Pipeline and Hazardous Materials Safety Administration Interpretive Letter Addressing...

The Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in an October 15th interpretive letter clarification of the Hazardous Material Regulation (“HMR”) pertaining to the classification of explosives. ...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Transportation/Hazardous Materials: Pipeline and Hazardous Materials Safety Administration Addresses Applicability to Cryogenic...

The United States Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in a September 20th interpretive letter a request for clarification of the Hazardous Materials Regulations (“HMR”) applicable to...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Transportation/Hazardous Materials: Pipeline and Hazardous Materials Safety Administration Interpretive Letter Addressing Flexible...

The Pipeline and Hazardous Materials Safety Administration (“PHMSA”) responded in a September 12th letter to a question seeking clarification of the Hazardous Materials Regulations (“HMR”) applicable to the testing...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Transportation/Hazardous Materials: Pipeline and Hazardous Materials Safety Administration Interpretive Letter Addressing Testing...

The United States Pipeline and Hazardous Materials Safety Administration (“PHMSA”) responded in a September 17th interpretive letter to a question seeking clarification of the Hazardous Materials Regulations (“HMR”)...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Transportation/Hazardous Materials: U.S. Pipeline and Hazardous Materials Safety Administration Interpretive Letter Addressing...

The United States Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in an August 1st interpretive letter a question regarding the Hazardous Materials Regulations (“HMR”) applicable to materials of...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Transportation/Hazardous Materials Regulations: June 3rd Pipeline and Hazardous Materials Safety Interpretive Letter Addressing...

The Pipeline and Hazardous Materials Safety Administration (“PHMSA”) responded in a June 3rd letter to a request for clarification of the Hazardous Materials Regulations (“HMR”) applicable to the design qualification testing...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Residue/Intermediate Bulk Containers: U.S. Pipeline and Hazardous Materials Safety Administration Interpretive Letter Addressing...

The United States Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in a May 30th interpretive letter a question regarding the application of the federal Hazardous Materials Regulations (“HMR”) to...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Transportation/Hazardous Materials Regulation: July 10 Interpretive Letter Addressing Intermediate Bulk Containers

The United States Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in a July 10th interpretive letter the application of the Hazardous Materials Regulations (“HMR”) to intermediate bulk containers...more

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