PHMSA has published several Frequently Asked Questions (FAQs) documents on programmatic topics. Please review these documents here at: https://www.phmsa.dot.gov/about-phmsa/phmsa-faqs.
Additionally, Office of Hazardous Materials Safety has published Hazardous Materials FAQs based on letters of interpretation on the following topics:
- Applicability of the Hazardous Materials Regulations
- Hazardous Materials Incident Reporting
- Training Requirements
Office of Hazardous Materials Safety: For questions about transporting hazardous materials, needing clarifications of the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180), or requesting a formal letter of interpretation, please go to the Hazardous Materials Information Center (HMIC) page for contact information (phone and email address).
Office of Pipeline Safety: A written regulatory interpretation, response to a question, or an opinion concerning a pipeline safety issue may be obtained by submitting a written request to the Office of Pipeline Safety (PHP–30), PHMSA, U.S. Department of Transportation, 1200 New Jersey Avenue SE., Washington, DC 20590–0001 or at the email address: pipeline_interp_submittal@dot.gov. In addition to email address, the requestor must include his or her return address and should also include a daytime telephone number. Requests should be submitted at least 120 days before the time the requestor needs a response. Note: electronic submission is provided as alternative to the 49 CFR Part 190.11(b) mail-in requirement.
This section of the website below provides the ability to find regulations information including regulations parts, content of sections, and interpretations for regulations sections. A list of parts, identified by the part number and subject is also provided. To browse sections by part, click on the subject link below. You will be taken to the eCFR website to view sections for a part.
The eCFR is also searchable by keyword and other available options on the eCFR website. To search and browse regulations using the eCFR website, use the link below. For assistance, please send an email to PHMSA.Webmaster@dot.gov.
Search the eCFR
Ref ID: | Date Sort ascending | Company Name | Individual Name | Response Document |
---|---|---|---|---|
22-0050 | Mayo Clinic | Mr. Travis Brandt | View | |
22-0072 | Coty Riverside Distribution Center | Ms. Janice Hayes | View | |
22-0113 | Totex Manufacturing, Inc. | Jim Sides | View | |
22-0138 | AllTranstek, L.L.C. | Mike Tait | View | |
22-0071 | W.E. Train Consulting | Mr. Gene Sanders | View | |
22-0111 | State Industrial Products | Travis Arledge | View | |
22-0133 | Usher Transport | Jerry Hudson | View | |
22-0131 | Powin | Thomas Kerr | View | |
22-0029 | Belshire Environmental Services Inc. | Bear Bridges | View | |
22-0037 | Linde Gas & Equipment Inc. | Mike Stephens | View | |
22-0064 | Total Compliance, LLC | Chris Heminger | View | |
21-0110 | Matson, Inc. | Cliff Bartley | View | |
22-0112 | Oak Harbor Freight Lines, Inc. | Jeff McLaughlin | View | |
22-0110 | Environmental Resource Center | Kristie Absher | View | |
22-0106 | Clean Earth | Nicholas Prevosti | View | |
22-0048 | Tom Morales | View | ||
22-0063 | M-Tac Trucking Compliance LLC | Brian A. McGuire | View | |
22-0035 | Linde Gas & Equipment Inc. | Mike Stephens | View | |
22-0034 | CTI and Associates, Inc. | Terri Zick | View | |
PI-22-0018 | XTO Energy, Inc. | Mr. Jameson Gowin | View | |
22-0066 | Ameristar Air Cargo, Inc. | Pat Hulsey | View | |
22-0086 | Fujitrans USA Inc. | Laura Warren | View | |
22-0102 | Transportation Development Group, LLC | Jim Powell | View | |
22-0120 | Hazmat Safety Consulting, LLC | Robert Richard | View | |
22-0083 | Pilot Chemical Company | Megan O’Connor | View | |
22-0090 | Hunting Titan | Joseph Murphy | View | |
22-0051 | Inliner Solutions | Wayne W. Carver | View | |
22-0007 | Consolidated Nuclear Security | Chris Carthel | View | |
22-0010 | CryoLogistics Refrigeration Technologies Ltd. | Rodger Talstra | View | |
22-0044 | Transportation Development Group, LLC | Jim Powell | View | |
22-0080 | Arkema – Health Environment and Safety | Steve Schulte | View | |
22-0040 | Rinchem Company, Inc | Joe Strelow | View | |
PI-22-0012 | IACX Roswell, LLC | Mr. Justin Wheeler | View | |
16-0166R | Haliburton HRD | Albert R. Vandeaver | View | |
22-0082 | TMC Engineering Services Inc. | R.G. Ashton | View | |
22-0027 | Entegris, Inc. | James V. McManus | View | |
22-0053 | Alston & Bird | Meaghan G. Boyd | View | |
22-0041 | Pilot Chemical Company | Megan O’Connor | View | |
22-0068 | Detroit Scrap Consulting Services | Ty Cox | View | |
22-0043 | Alabama Liquefied Petroleum Gas Board | W. Mark Nelson | View | |
22-0045 | Parker Hannifin Corporation | Erik Steinbeck | View | |
22-0046 | Entegris Inc. | Jim McManus | View | |
22-0015 | ICE Service Group & SPS Packaging Systems | Kurt Colborn | View | |
PI-22-0013 | BGC Engineering Inc. | Mr. Mark Zellman | View | |
22-0049 | Linde Gas & Equipment Inc. | Mike Stephens | View | |
22-0020 | Justin Lacy | View | ||
22-0011 | Betts Industries, Inc. | David J. Adams | View | |
22-0022 | Duke Energy Corporation | Charles Denny | View | |
21-0069 | UL LLC | Mr. Blake Shugarman | View | |
21-0098 | Dominion Energy | Mr. Tim Carter | View |