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). Pending interpretation letters that are under review by the Office of Hazardous Materials Safety can be found at Pending Hazardous Materials (Hazmat) Interpretations.
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.
Interpretation letters under review are available at the Office of Pipeline Safety’s Interpretation Review page. To submit comments on an interpretation under review, proceed to the Interpretation Review page, locate the interpretation to comment on, and click the appropriate link to submit a comment on the corresponding interpretation. Comment submissions will be accepted for 30-days after the interpretation letter is posted.
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 |
---|---|---|---|---|
15-0082 | Schlumberger Technology Corporation | Mr. Paul Lezak | View | |
15-0022 | Mihama Corporation | MS. Andrea Kornbluth | View | |
15-0086 | HMT Associates, L.L.C. | Mr. Andy Altemos | View | |
15-0108 | W. J. Byrnes & Co | Ms. Daisy Tate | View | |
15-0032 | Air Liquide (USA) LLC | Mr. Jerry Freeman | View | |
15-0110 | Mace Tactical Solution, LLC | Mr. Garnett Meador | View | |
15-0065 | SOLARIS | Mr. Keane Lao | View | |
15-0053 | Mr. Kevin Skerrett | View | ||
15-0080 | Chemours Company FC, LLC | Mr. Randolph Martin | View | |
15-0015 | FedEx Express | Mr. Marvin Sudduth | View | |
15-0049 | Thompson Tank, Inc. | Mr. David Thompson | View | |
14-0238 | Surface Deployment and distribution Command | Mr. Marco Boasso | View | |
15-0071 | Professional Emergency Resource Services (PERS) | Mr. Rick Heylmun | View | |
15-0091 | Ammunition Surveillance Division | Mr. James Gibson | View | |
14-0237 | Textron Systems, Weapons & Sensor Systems | Mr. James Baustert | View | |
14-0157 | Alaska Airlines | Mr. Mike Tobin | View | |
15-0034 | Crowley Liner Service | Mr. Michael Lesser | View | |
15-0076 | The Lane Construction Corporation | Ms. Michele Jacobs | View | |
14-0235 | Trinity Containers, LLC | Mr. Greg McRae | View | |
15-0074 | SGS North America, Inc. | Mr. Jason Sherrier | View | |
14-0246 | Wiley Rein LLP | Mr. George Kerchner | View | |
14-0178 | South Carolina State Transport Police | First Sergeant Dean Dill | View | |
15-0005 | Traffic Stripes, LLC. | Mr. Paul Anderson | View | |
14-0146 | Det-Tronics | Mr. Lee Zwiefelhofer | View | |
15-0078 | Maryland Department of Environment | Mr. Michael Polinski | View | |
15-0048 | Oak Harbor Freight Lines, Inc. | Mr. Tom Mueller | View | |
15-0098 | United States Department of Interior | Mr. Greg Lawler | View | |
15-0042 | Transport Canada, TDG | Ms. Nida Chaudhary | View | |
15-0035 | Hedrick, Gardner, Kincheloe & Garofalo, LLP | Ms. Lindsey L. Smith | View | |
14-0248 | R&S Compliance group, LLC. | Mr. David Rivers | View | |
15-0003 | Tech Ord | Mr. Ken Martinmaas | View | |
15-0056 | Regulatory Resources, Inc. | Mr. W.A. Winters | View | |
14-0242 | Bureau of Radiation Protection | Ms. Celia Rajkovich | View | |
15-0051 | Scientific Innovations, LLC | Mr. Steve Foster | View | |
15-0010 | Hexagon Ragasco North America Inc. | Mr. Jonas Berglund | View | |
15-0061 | Currie Associates, Inc. | Ms. L'Gena Shaffer | View | |
15-0069 | Mr. Joseph Tsiyoni | View | ||
15-0028 | Duke Energy Corporation | Mr. Chuck Denny | View | |
15-0087 | Con-way Freight | Ms. Marie Easley-Cook | View | |
14-0216 | Savethesituation | Ms. Eva Glimsche | View | |
15-0046 | Dangerous Goods Department | Mr. Sergio Bustamante M | View | |
15-0095 | AECOM | Ms. Erin Jarman | View | |
15-0081 | LabelMaster Services | Mr. Robert Richard | View | |
15-0036 | U.S. Department of Energy | Mr. Dennis Claussen | View | |
15-0050 | URS Corporation | Mr. Andrew Romach | View | |
14-0138R | Polytek Development Corp. | Ms. Cynthia Salisbury | View | |
15-0075 | Dexsil Corporation | Mr. Andrew Lynn | View | |
15-0045 | Northern Air Cargo | Mr. Mark Smith | View | |
14-0234 | Club Assit, North America | Ms. Shelley Elzer | View | |
15-0004 | LPS Industries | Mr. Gary Flaherty | View |