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Section §176.83: Segregation

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 176.83 on the ECFR website

Interpretation Responses

Ref ID Date Company Name Individual Name Response Document
22-0049 Linde Gas & Equipment Inc. Mike Stephens View
05-0275 Horizon Lines Mr. Cliff Bartley View
03-0091 NRS America Inc. Mr. Domenico Masi View
05-0161 Horizon Lines, LLC Mr. Cliff Bartley View
11-0173 Department of the Army- SDDC Mr. Daniel A. Maham View
07-0010 United States Coast Guard Mr. J.E. Pomajzl View
07-0195 CDM Technologies, Inc. Mr. Boone Pendergrast View
05-0164 The Procter & Gamble Company Mr. Steven L. Dishion View
13-0132 Maine Department of Transportation Environmental Office Mr. Dwight Doughty, Jr. View
00-0017 Mediterranean Shipping Company (USA) Inc. Mr. H. Dever Mahoney Jr View
12-0239 ATMI, Inc. Mr. James McManus View
16-0129 National Cargo Bureau Mr. Edward Walker View
04-0280 Holman Fenwick & Willan Mr. Rory Butle View
07-0063 U.S. Coast Guard Sector Juneau Lieutenant Rob Nakama View
16-0201 EnviroServices & Training Center, LLC Mr. Gregory Perry View
05-0124 U.S. Coast Guard MSO Jacksonville Lt. John Fitzgerald View
05-0203 U.S. Coast Guard Mr. P.A. Cooley, MSTC View