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Section §192.625: Odorization of gas

Below are the available interpretations and guidance for the given section. To return to the list of parts, use the Parts link above. If you do not see any guidance or interpretation information below, that means there is none available for the given part/section. Return to the search page to browse additional regulations sections.

PHMSA has published several Frequently Asked Questions (FAQ) documents on regulatory topics. Please review our FAQ documents below:

Additionally PHMSA has Hazardous Materials FAQs based on letters of interpretation on the following topics:

This section of the website provides the ability to find regulations information including regulations parts, content of sections, and interpretations for regulations sections. Below is a list of parts, identified by the part number and subject. 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.

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: 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.

The regulations text of the section can be found on the eCFR website. To view the regulations text, use the link below. For assistance, please send an email to

View section 192.625 on the ECFR website

Interpretation Responses

Ref ID Date Company Name Individual Name Response Document
PI-18-0002 Connecticut PURA Mr. Karl H. Baker View
PI-18-0005 Simplot Company Mr. Alan L. Prouty View
PI-17-0008 AmeriGas Propane, LP Mr. David Hedrick View
PI-78-004 Cities Service Gas Company Mr. Richard H. Ruth View
PI-71-004 Compressed Gas Association, Inc. Robert E. Lenhard View
PI-83-018 Memo: Internal View
PI-73-030 James H. Collins View
PI-01-0116 EFI Corporation John Jacobus View
PI-74-013 Virginia State Corporation Commission James H. Gray View
PI-01-0115 Alliance Pipeline Inc. Mr. Rick Gulstad View
PI-75-015 Commonwealth of Kentucky Roger Fletcher View
PI-75-018 Law Offices of Carpenter, Golding, Crews & Meekins Fred C. Meekins View
PI-82-007 Railroad Commission of Texas/Gas Utilities Division M. L. Fegenbush, Jr. View
PI-83-017 Memo: Internal View
PI-71-003 Alabama Public Service Commission James B. Williams View
PI-84-001 Memo: Internal View
PI-79-010 Memo: Internal View
PI-76-023 House of Representatives Honorable Richard Nolan View
PI-04-0103 Northern Border Pipeline Company Mr. Jose L. de la Fuente View
PI-79-0100 View
PI-80-015 Kentucky Energy & Utility Regulatory Commission F. Scott Smith View
PI-89-010 Colorado Public Utilities Commission Arnold H. Cook View