# Approval and Promulgation of Implementation Plans; California State Implementation Plan Revision; South Coast Air Quality Management District, San Diego County Air Pollution Control District, and Kern County Air Pollution Control District
> **Rule** · Final rule. · Published 1998-12-09 · Effective 1999-01-08 · 63 FR 67784
## Document
- **Document number:** 98-32563
- **Category:** air-emissions
- **Federal Register citation:** 63 FR 67784
- **CFR reference:** 40 CFR 52
- **Publication date:** 1998-12-09
- **Effective date:** 1999-01-08
- **State:** CA
- **EPA docket:** CA-198-0058
## Abstract

EPA is approving revisions to the California State Implementation Plan (SIP) which primarily concern the control of particulate matter (PM) emissions. The intended effect of these SIP revisions is principally to regulate PM emissions in accordance with the requirements of the Clean Air Act, as amended in 1990 (CAA or the Act). EPA's final approval of these revisions incorporates them into the federally approved SIP for the South Coast Air Quality Management District (SCAQMD), San Diego County Air Pollution Control District (SDCAPCD), and the Kern County Air Pollution Control District (KCAPCD). EPA has evaluated each of the revisions and is approving them under provisions of the CAA regarding EPA action on SIP submittals, SIPs for national primary and secondary ambient air quality standards, and plan requirements for nonattainment areas. EPA is granting simultaneous limited approval and limited disapproval of SCAQMD Rule 403 because, while it strengthens the SIP, it also does not fully meet the CAA provisions regarding plan submissions and requirements for nonattainment areas.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/12/09/98-32563/approval-and-promulgation-of-implementation-plans-california-state-implementation-plan-revision)
---
*AI Analytics · CC0 1.0*