# Approval and Promulgation of Air Quality Implementation Plans; Delaware; Reasonably Available Control Technology Under the 8-Hour Ozone National Ambient Air Quality Standard
> **Rule** · Final rule. · Published 2008-07-23 · Effective 2008-08-22 · 73 FR 42681
## Document
- **Document number:** E8-16833
- **Category:** air-emissions
- **Federal Register citation:** 73 FR 42681
- **CFR reference:** 40 CFR 52
- **Publication date:** 2008-07-23
- **Effective date:** 2008-08-22
- **State:** DE
- **EPA docket:** EPA-R03-OAR-2007-0449
## Abstract

EPA is approving a State Implementation Plan (SIP) revision submitted by the State of Delaware. This SIP revision pertains to the requirements in meeting the reasonably available control technology (RACT) under the 8-hour ozone national ambient air quality standard (NAAQS). These requirements are based on: Certification that previously adopted RACT controls in Delaware's SIP that were approved by EPA under the 1-hour ozone NAAQS are based on the currently available technically and economically feasible controls, and that they continue to represent RACT for the 8-hour implementation purposes; the adoption of new or more stringent regulations that represent RACT control levels; and a negative declaration that certain categories of sources do not exist in Delaware. This action is being taken under the Clean Air Act (CAA).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2008/07/23/E8-16833/approval-and-promulgation-of-air-quality-implementation-plans-delaware-reasonably-available-control)
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