# 49 CFR 171.15(b)(4) — Federal incident notification deadlines by regulation

For 49 CFR 171.15(b)(4), governing statute is Hazardous Materials Transportation Act; triggering event is a release of a marine pollutant occurs in a quantity exceeding 450 L (119 gallons) for a liquid or 400 kg (882 pounds) for a solid during transportation; notification deadline is as soon as practical but no later than 12 hours after the occurrence; notification recipient is National Response Center (NRC) on 800-424-8802 (toll free) or 202-267-2675 (toll call); required method is telephone to the National Response Center (NRC), recorded from its source on 2026-08-12.

- **Regulation:** 49 CFR 171.15(b)(4)
- **Governing statute:** Hazardous Materials Transportation Act _(our reading, not quoted from the source)_
- **Triggering event:** a release of a marine pollutant occurs in a quantity exceeding 450 L (119 gallons) for a liquid or 400 kg (882 pounds) for a solid during transportation
- **Notification deadline:** as soon as practical but no later than 12 hours after the occurrence
- **Notification recipient:** National Response Center (NRC) on 800-424-8802 (toll free) or 202-267-2675 (toll call)
- **Required method:** telephone to the National Response Center (NRC)
- **Follow-up requirement:** written Hazardous Materials Incident Report on DOT Form F 5800.1 within 30 days per 49 CFR 171.16

## What the source says

> A release of a

## Source

- https://www.law.cornell.edu/cfr/text/49/171.15

Last verified: 2026-08-12. Review by: 2027-02-08.
Part of [Federal incident notification deadlines by regulation](https://referencesource.org/incident-notification-deadlines/).