# Revised Cross-State Air Pollution Rule Update for the 2008 Ozone NAAQS; Correction
> **Rule** · Final rule; correction. · Published 2021-06-04 · Effective 2021-06-29 · 86 FR 29948
## Document
- **Document number:** 2021-11740
- **Category:** air-emissions
- **Federal Register citation:** 86 FR 29948
- **CFR reference:** 40 CFR 51
- **Publication date:** 2021-06-04
- **Effective date:** 2021-06-29
- **EPA docket:** EPA-HQ-OAR-2020-0272
## Abstract

The Environmental Protection Agency (EPA) is correcting certain statements in the preamble of the Revised Cross-State Air Pollution Rule (CSAPR) Update for the 2008 Ozone NAAQS, which was published as a final rule in the Federal Register on April 30, 2021. The preamble describes a provision of the final regulatory text incorrectly by indicating that the provision applies if a satisfactory demonstration is made, when in fact no demonstration is required. This document corrects the preamble to accurately describe the regulatory text provision.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2021/06/04/2021-11740/revised-cross-state-air-pollution-rule-update-for-the-2008-ozone-naaqs-correction)
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