# Air Plan Approval; North Carolina; Update to Materials Incorporated by Reference
> **Rule** · Final rule; notification of administrative change. · Published 2018-10-26 · Effective 2018-10-26 · 83 FR 54032
## Document
- **Document number:** 2018-23246
- **Category:** other
- **Federal Register citation:** 83 FR 54032
- **CFR reference:** 40 CFR 52
- **Publication date:** 2018-10-26
- **Effective date:** 2018-10-26
- **State:** NC
- **EPA docket:** NC-2018
## Abstract

The Environmental Protection Agency (EPA) is updating the materials that are incorporated by reference (IBR) into the North Carolina state implementation plan (SIP). EPA is also revising the format for materials submitted by the local agency "Western North Carolina" that have been incorporated by reference into the SIP. The regulations affected by this update have been previously submitted by North Carolina and the local agencies, and have been previously approved by EPA. This update affects the materials that are available for public inspection at the National Archives and Records Administration (NARA) and the EPA Regional Office.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/10/26/2018-23246/air-plan-approval-north-carolina-update-to-materials-incorporated-by-reference)
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