# Exxon Company, U.S.A. — Hazardous Materials Safety Interpretation

**Citation:** 98-0280  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 1998-10-19

98-0280 response to Exxon Company, U.S.A. concerning 171.4, 172.301.

## Document text

<<<PAGE 1>>>

pull letter longie
172:322
400 Seventh Street, S.W.
of Transportation
US. Department
Washinglon, D.C. 20590
OCT | 9 1998
Research and
Administration
Special Programs
• -
MI. Robert A. Casbill
Ref. No. 98-0280
Field Environmental Specialist
Exxon Company, U.S.A.
1 Avenue J
Bayonne, NJ
07002
Dear Mr. Casbill:
This is in reference to your inquiry concerning the
pollutants under the Hazardous Materials Regulations (HMR; 49
requirements for non-bulk packagings containing marine
CFR Parts 171-180).
Specifically, you state that the material, an aviation
hydraulic fluid, contains triaryl phosphate, isopropylated in a
quantity that meets the definition in $ 171.8 of a marine
pollutant when transported by vessel. The material is packaged
in quantities ranging from one quart cans to 55 gallon drums.
You ask if it is acceptable to describe and mark the packages
in accordance with the marine pollutant requirements and to
mark the packages with a notation stating that they are not
regulated by highway, rail or air.
The answer is yes.
do so.
You may want to consider revising the wording of your
the HMR; "Non-bulk packages |< 119 gallons) ARE NOT REGULATED
171.4)."
It is unnecessary to show the notation on your
regulated bulk packages.
I hope this information is helpful. If I can be of further
assistance, please contact me.
Sincerely,
Hattee z. mitchel
-
Hattie I. Mitchell
Chief, Regulatory Review and Reinvention
Office of Hazardous Materials Standards

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/1998/980280.pdf>
- Source ID: `phmsa`
- SHA-256: `3771bba04705b708386a94b367ee08eb4cbfd78d4ce5a24e948910998522c716`
- Retrieved: 2026-08-20T00:59:31.977Z
- Exported: 2026-08-22T19:26:02.488Z
- Document slug: `phmsa-interpretation-98-0280`

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