# Approval and Promulgation of Air Quality Implementation Plans; Delaware; Amendments to Delaware's Ambient Air Quality Standards
> **Rule** · Direct final rule. · Published 2014-06-17 · Effective 2014-08-18 · 79 FR 34441
## Document
- **Document number:** 2014-14029
- **Category:** air-emissions
- **Federal Register citation:** 79 FR 34441
- **CFR reference:** 40 CFR 52
- **Publication date:** 2014-06-17
- **Effective date:** 2014-08-18
- **State:** DE
- **EPA docket:** EPA-R03-OAR-2014-0245
## Abstract

The Environmental Protection Agency (EPA) is taking direct final action to approve revisions to the Delaware State Implementation Plan (SIP). These amendments will bring Delaware's ambient air quality standards for sulfur dioxide (SO<INF>2</INF>), ozone, nitrogen dioxide (NO<INF>2</INF>), lead, and particulate matter (PM) up to date with current Federal requirements. EPA is approving these SIP revisions in accordance with the requirements of the Clean Air Act (CAA).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2014/06/17/2014-14029/approval-and-promulgation-of-air-quality-implementation-plans-delaware-amendments-to-delawares)
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