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- Query: `87 FR 16308`
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## 1. Notice and Request for Comments: FAQs - Applicability of the Hazardous Materials Regulations

**Citation:** PHMSA Guidance, Notice and Request for Comments: FAQs - Applicability of the Hazardous Materials Regulations  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective / published:** 2022-03-22 / 2022-03-22

Notice and Request for Comments: FAQs - Applicability of the Hazardous Materials Regulations Document FAQ Applicability of Hazardous Material Regulations 87 FR 16308 (March 22 2022).pdf (215.79 KB) PHMSA is conducting an initiative to convert historical letters

### Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/regulatory-compliance/phmsa-guidance/notice-and-request-comments-faqs-applicability-hazardous-0>
- Source ID: `phmsa-guidance`
- SHA-256: `25b95e733cd3b6fe8e22db08d070c42eb8aa41f698640caf631ed88daa848f78`
- Retrieved: 2026-08-20T00:43:06.968Z
- Document slug: `phmsa-guidance-notice-and-request-comments-faqs-applicability-hazardous-0-a8a64752`
- Related records: 3