# Approval and Promulgation of Air Quality Implementation Plans; Delaware; the 2002 Base Year Emissions Inventory for the Delaware Portion of the Philadelphia Nonattainment Area for the 1997 Annual Fine Particulate Matter National Ambient Air Quality Standard
> **Rule** · Final rule. · Published 2013-03-04 · Effective 2013-04-03 · 78 FR 14020
## Document
- **Document number:** 2013-04810
- **Category:** air-emissions
- **Federal Register citation:** 78 FR 14020
- **CFR reference:** 40 CFR 52
- **Publication date:** 2013-03-04
- **Effective date:** 2013-04-03
- **State:** DE
- **EPA docket:** EPA-R03-OAR-2010-0141
## Abstract

EPA is approving a revision to the Delaware State Implementation Plan (SIP) submitted by the State of Delaware, through the Delaware Department of Natural Resources and Environmental Control (DNREC) on April 3, 2008. The SIP revision pertains to the 2002 base year emissions inventory for the Delaware portion of the Philadelphia- Wilmington, Pennsylvania-New Jersey-Delaware (PA-NJ-DE) nonattainment area. The 2002 base year emissions inventory was submitted to meet nonattainment requirements related to the Delaware nonattainment area for the 1997 annual fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standard (NAAQS). EPA is approving the 2002 base year emissions inventory in accordance with the requirements of the Clean Air Act (CAA).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/03/04/2013-04810/approval-and-promulgation-of-air-quality-implementation-plans-delaware-the-2002-base-year-emissions)
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