PHMSA: Notification of Conforming Amendments

Hazardous Materials: Liquefied Natural Gas by Rail

For those of you who have been following Liquified Natural Gas (LNG) by Rail rule its been quite the journey thus far. Recently on June 23, 2025, the Department of Transportation (DOT) Pipeline and Hazardous Materials Administration (PHMSA) published a notice of confirming amendments which amends the Hazardous Materials Regulations in response to United States Court of Appeals for the District of Columbia Circuit in Sierra Club, et al. v. DOT, et al., No. 20-1317 (Jan. 17, 2025).

These amendments simply restore the text of the HMR to what it originally said prior to the effective date of the LNG by Rail Rule. The following sections will revert to the effective version prior to August 24, 2020. Those texts that did not exist prior to this effective date will be deleted. Those sections affected are listed below:

Reverting Back:

• 49 CFR 172.101,
• 102,
• 820,
• 319,
• 400-5, and
• 400-8.

Being Deleted:

• § 174.200(d),
• 400-26, and
• 515(d)

It should be noted that these changes do not affect the transportation of LNG by highway, vessel, and rail by UN T75 portable tanks or those who seek special permit authorization in DOT 113C120W9 specification rail tank cars. These amendments also have an effective date of June 23, 2025. To view this notification in its entirety you can click HERE!

If you enjoyed this short read, make sure to check out our other blogs on our website. You can also sign up for our monthly newsletter where you can get even more regulatory news, industry trends, and exclusives! If you want to be the first to know when new content like this drops, make sure to follow us at Facebook, X (Twitter), and LinkedIn.

Lastly,  if you’re in need of immediate help, you can always contact us directly through our  website at  www.learnhazmat.com or give us a call at 412.249.1111 for a 100% FREE CONSULTATION and one of our dedicated team members will help you decide what industry leading training or compliance solution best fits your needs.