# Ethylene Oxide Emission Standards for Sterilization Facilities (see also Hospital Ethylene Oxide Sterilizers) — EPA NESHAP Source Category Applicability Crosswalk

For Ethylene Oxide Emission Standards for Sterilization Facilities (see also Hospital Ethylene Oxide Sterilizers), cfr subpart is 40 CFR 63 Subpart O; source type is major sources; original final rule date is 1994-12-06; most recent amendment date is 2024-04-05; rtr status is completed, recorded from its source on 2026-08-15.

- **source category:** Ethylene Oxide Emission Standards for Sterilization Facilities (see also Hospital Ethylene Oxide Sterilizers)
- **cfr subpart:** 40 CFR 63 Subpart O
- **source type:** major sources _(our reading, not quoted from the source)_
- **original final rule date:** 1994-12-06
- **most recent amendment date:** 2024-04-05
- **rtr status:** completed
- **key haps regulated:** ethylene oxide _(verified: appears in the quote below)_
- **epa category url:** https://www.epa.gov/stationary-sources-air-pollution/ethylene-oxide-emissions-standards-sterilization-facilities _(our reading, not quoted from the source)_

## What the source says

> These standards implement section 112 of the Clean Air Act and are based on the Administrator's determination that commercial sterilization and fumigation operations emit ethylene oxide, a pollutant identified in the Act list of 189 hazardous air pollutants (HAP).

## Source

- https://www.epa.gov/stationary-sources-air-pollution/ethylene-oxide-emissions-standards-sterilization-facilities

Last verified: 2026-08-15. Review by: 2026-12-13.
Part of [EPA NESHAP Source Category Applicability Crosswalk](https://referencesource.org/neshap-source-category-crosswalk/).