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Title 49

Displaying title 49, up to date as of 10/13/2026. Title 49 was last amended 10/13/2026.
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Obtaining Guidance and Public Information

§ 105.20 Guidance and interpretations.

(a) Hazardous materials regulations. You can obtain information and answers to your questions on compliance with the hazardous materials regulations (49 CFR parts 171 through 180) and interpretations of those regulations by contacting PHMSA's Office of Hazardous Materials Safety as follows:

(1) Call the Hazardous Materials Information Center at 1-800-467-4922 (in Washington, DC, call (202) 366-4488). The Center is staffed from 9 a.m. through 5 p.m. Eastern time, Monday through Friday except Federal holidays. After hours, you can leave a recorded message and your call will be returned by the next business day.

(2) E-mail the Hazardous Materials Information Center at .

(3) Obtain hazardous materials safety information via the Internet at http://www.phmsa.dot.gov.

(4) Send a letter, with your return address and a daytime telephone number, to: Standards and Rulemaking Division, Pipeline and Hazardous Materials Safety Administration, Attn: PHH-10, U.S. Department of Transportation, East Building, 1200 New Jersey Avenue, SE., Washington, DC 20590-0001.

(b) Federal hazardous materials transportation law and preemption. You can obtain information and answers to your questions on Federal hazardous materials transportation law, 49 U.S.C. 5101 et seq., and Federal preemption of State, local, and Indian tribe hazardous material transportation requirements, by contacting PHMSA's Office of the Chief Counsel as follows:

(1) Call the office of the Chief Counsel at (202) 366-4400 from 9 a.m. to 5 p.m. Eastern time, Monday through Friday except Federal holidays.

(2) Access information from the Office of the Chief Counsel via the Internet at http://www.phmsa.dot.gov.

(3) Send a letter, with your return address and a daytime telephone number, to: Office of the Chief Counsel, Pipeline and Hazardous Materials Safety Administration, Attn: PHC-10, U.S. Department of Transportation, East Building, 1200 New Jersey Avenue, SE., Washington, DC 20590-0001.

(4) Contact the Office of the Chief Counsel for a copy of applications for preemption determinations, waiver of preemption determinations, and inconsistency rulings received by PHMSA before February 1, 1997.

[70 FR 56087, Sept. 23, 2005, as amended at 72 FR 55682, Oct. 1, 2007; 76 FR 56310, Sept. 13, 2011]

§ 105.25 Reviewing public documents.

PHMSA is required by statute to make certain documents and information available to the public. You can review and copy publicly available documents and information at the locations described in this section.

(a) DOT Docket Management System. Unless a particular document says otherwise, the following documents are available for public review and copying at the Department of Transportation's Docket Management System, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue, SE., Washington, DC 20590-0001, or for review and downloading through the Internet at http://www.regulations.gov.

(1) Rulemaking documents in proceedings started after February 1, 1997, including notices of proposed rulemaking, advance notices of proposed rulemaking, public comments, related Federal Register notices, final rules, appeals, and PHMSA's decisions in response to appeals.

(2) Applications for special permits numbered DOT-E or DOT-SP 11832 and above. Also available are supporting data, memoranda of any informal meetings with applicants, related Federal Register notices, public comments, and decisions granting or denying applications for special permits.

(3) Applications for preemption determinations and waiver of preemption determinations received by PHMSA after February 1, 1997. Also available are public comments, Federal Register notices, and PHMSA's rulings, determinations, decisions on reconsideration, and orders issued in response to those applications.

(b) Office of Pipeline and Hazardous Materials Safety Administration's Office of Hazardous Materials Safety.

(1) You may obtain documents (e.g., proposed and final rules, notices, letters of clarification, safety notices, DOT forms and other documents) by contacting the Hazardous Materials Information Center at 1-800-467-4922 or through the Internet at http://www.phmsa.dot.gov.

(2) Upon your written request, we will make the following documents and information available to you:

(i) Appeals under 49 CFR part 107 and PHMSA's decisions issued in response to those appeals.

(ii) Records of compliance order proceedings and PHMSA compliance orders.

(iii) Applications for approvals, including supporting data, memoranda of any informal meetings with applicants, and decisions granting or denying approvals applications.

(iv) Applications for special permits numbered below DOT-E or DOT-SP 11832 and related background information are available for public review and copying at the Office of Hazardous Materials Safety, Approvals and Permits Division, U.S. Department of Transportation, PHH-30, East Building, 1200 New Jersey Avenue, SE., Washington, DC 20590-0001.

(v) Other information about PHMSA's hazardous materials program required by statute to be made available to the public for review and copying and any other information PHMSA decides should be available to the public.

(3) Your written request to review documents should include the following:

(i) A detailed description of the documents you wish to review.

(ii) Your name, address, and telephone number.

(4) Send your written request to: Associate Administrator for Hazardous Materials Safety, Pipeline and Hazardous Materials Safety Administration, Attn: PHH-1, U.S. Department of Transportation, East Building, 1200 New Jersey Avenue, SE., Washington, DC 20590-0001.

[70 FR 56088, Sept. 23, 2005, as amended at 70 FR 73159, Dec. 9, 2005; 72 FR 55682, Oct. 1, 2007; 76 FR 56310, Sept. 13, 2011]

§ 105.26 Obtaining records on file with PHMSA.

To obtain records on file with PHMSA, other than those described in § 105.25, you must file a request with PHMSA under the Freedom of Information Act (FOIA) (5 U.S.C. 552). The procedures for filing a FOIA request are contained in 49 CFR part 7.

§ 105.30 Information made available to the public and request for confidential treatment.

When you submit information to PHMSA during a rulemaking proceeding, as part of your application for special permit or approval, or for any other reason, we may make that information publicly available unless you ask that we keep the information confidential.

(a) Asking for confidential treatment. You may ask us to give confidential treatment to information you give to the agency by taking the following steps:

(1) Mark “confidential” on each page of the original document you would like to keep confidential.

(2) Send us, along with the original document, a second copy of the original document with the confidential information deleted.

(3) Explain why the information you are submitting is confidential (for example, it is exempt from mandatory public disclosure under the Freedom of Information Act, 5 U.S.C. 552 or it is information referred to in 18 U.S.C. 1905).

(b) PHMSA Decision. PHMSA will decide whether or not to treat your information as confidential. We will notify you, in writing, of a decision to grant or deny confidentiality at least five days before the information is publicly disclosed, and give you an opportunity to respond.

[67 FR 42951, June 25, 2002, as amended at 70 FR 73159, Dec. 9, 2005]