# Approval and Promulgation of Implementation Plans; California State Implementation Plan Revision, San Diego County Air Pollution Control District
> **Rule** · Direct final rule. · Published 1998-09-23 · Effective 1998-11-23 · 63 FR 50764
## Document
- **Document number:** 98-25328
- **Category:** air-emissions
- **Federal Register citation:** 63 FR 50764
- **CFR reference:** 40 CFR 52
- **Publication date:** 1998-09-23
- **Effective date:** 1998-11-23
- **State:** CA
- **EPA docket:** CA 206-0095a
## Abstract

EPA is taking direct final action on revisions to the California State Implementation Plan. The revisions concern negative declarations from the San Diego County Air Pollution Control District (SDCAPCD) for nine source categories that emit volatile organic compounds (VOC). The SDCAPCD has certified that major sources in these source categories are not present in the District and this information is being added to the federally approved State Implementation Plan (SIP). The intended effect of approving these negative declarations is to meet the requirements of the Clean Air Act, as amended in 1990 (CAA or the Act). Thus, EPA is finalizing the approval of these revisions into the California SIP 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.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/09/23/98-25328/approval-and-promulgation-of-implementation-plans-california-state-implementation-plan-revision-san)
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