[Code of Federal Regulations]
[Title 49, Volume 2]
[Revised as of October 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR105.20]

[Page 9]
 
                        TITLE 49--TRANSPORTATION
 
   CHAPTER I--PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, 
                      DEPARTMENT OF TRANSPORTATION
 
PART 105_HAZARDOUS MATERIALS PROGRAM DEFINITIONS AND GENERAL PROCEDURES--
Table of Contents
 
                      Subpart B_General Procedures
 
Sec.  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 
infocntr@dot.gov.
    (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: Office of Hazardous Materials Standards, 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]