# Ariel Corporation — Hazardous Materials Safety Interpretation

**Citation:** 07-0021  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2007-03-26

07-0021 response to Ariel Corporation concerning 172.101.

## Document text

<<<PAGE 1>>>

Mar 26, 2007
Ms. Betty Hicks Ariel Corporation
Eastman Building, P2
137 Regional Park I)rive
Kingsport, Tennessee 37660
Reference No. 07-0021
Dear Ms. Hicks:
This is in response to your February 6, 2007 letter requesting clarification of the
Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180) applicable to marine
pollutants. Specifically, you ask if a material is considered to be a listed man e pollutant
if the technical name of the material does not specifically appear in the table of marine
pollutants (172.101, Appendix B) but a synonym does.
The answer is yes. Under the HMR, a material is considered a listed marine pollutant if
either its technical name or a synonym appears in the table of marine pollutants.
Sincerely,
John A. Gale
Standards Development
Office of Hazardous Materials Standards
172.101 App.B

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/2007/070021.pdf>
- Source ID: `phmsa`
- SHA-256: `8b5a1f10581ef4fa67988b2c44c3f348acd09e640d5b7753902ecc90e613aca1`
- Retrieved: 2026-08-20T00:59:31.977Z
- Exported: 2026-08-23T06:03:36.902Z
- Document slug: `phmsa-interpretation-07-0021`

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