# DELTA Analytical Corporation — Hazardous Materials Safety Interpretation

**Citation:** 99-0177  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 1999-10-07

99-0177 response to DELTA Analytical Corporation concerning 172.101.

## Document text

99-0177. Organizations: DELTA Analytical Corporation. Recipients: Mr. Jeff Jones. Cataloged sections: 172.101. The official response PDF is image-only or otherwise non-extractable; open it for the complete text.

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/1999/990177.pdf>
- Source ID: `phmsa`
- SHA-256: `85e519e45f8a1e4ec6688ea0b7f4dea10f798121955cb60fe5219a1f2a409255`
- Retrieved: 2026-08-20T00:59:31.977Z
- Exported: 2026-08-24T21:30:18.592Z
- Document slug: `phmsa-interpretation-99-0177`

### Source metadata

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  "caveat": "Interpretations apply regulations to the facts presented and do not create independently enforceable requirements.",
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```