# National Emission Standards for Hazardous Air Pollutants for Source Categories: Organic Hazardous Air Pollutants From the Synthetic Organic Chemical Manufacturing Industry and Other Processes Subject to the Negotiated Regulation for Equipments Leaks
> **Rule** · Direct final rule; amendments. · Published 2004-12-23 · Effective 2005-03-08 · 69 FR 76859
## Document
- **Document number:** 04-27992
- **Category:** air-emissions
- **Federal Register citation:** 69 FR 76859
- **CFR reference:** 40 CFR 63
- **Publication date:** 2004-12-23
- **Effective date:** 2005-03-08
- **EPA docket:** OAR-2003-0023
## Abstract

The EPA is taking direct final action to amend the National Emission Standards for Hazardous Air Pollutants (NESHAP) for Source Categories: Organic Hazardous Air Pollutants from the Synthetic Organic Chemical Manufacturing Industry and Other Processes Subject to the Negotiated Regulation for Equipment Leaks. The standards are commonly known as the Hazardous Organic NESHAP or the HON. This action amends the HON to allow vapor balancing in conjunction with the use of a pressure setting to comply with the storage tank control requirements of the standards.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2004/12/23/04-27992/national-emission-standards-for-hazardous-air-pollutants-for-source-categories-organic-hazardous-air)
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