HMR Clarification
Pipeline and Hazardous Materials Safety Administration · Mar 8, 1994 · Reference No. 94-0002
Reggie’s quick take
Someone asked PHMSA whether its September 28, 1992 response was based on the old Hazardous Materials Regulations or the current ones. PHMSA replied that the 1992 letter reflects the current requirements, which were adopted under Docket HM-181 on October 1, 1991. The letter gives no further detail, so it does not say which specific rules were covered.
Written by AI (Claude) on Oct 22, 2026. Robots make mistakes and leave things out, so the letter below is what counts. Not legal advice.
This is in response to your December 20, 1993 letter requesting a clarification of our response dated September 28, 1992. You asked whether our response refers to the old Hazardous Materials Regulations (HMR) or the current HMR.
Our September 28, 1992 letter reflects the current requirements which were adopted under Docket HM-181 on October 1, 1991. If we can be of further assistance, please do not hesitate to contact us.
A letter of interpretation applies the regulations to the facts the requester described. It isn’t a regulation and isn’t legal advice. The agency’s copy.