# Approval and Promulgation of Implementation Plans; California State Implementation Plan Revision; Mojave Desert Air Quality Management District
> **Rule** · Direct final rule. · Published 1999-01-11 · Effective 1999-03-12 · 64 FR 1517
## Document
- **Document number:** 99-80
- **Category:** air-emissions
- **Federal Register citation:** 64 FR 1517
- **CFR reference:** 40 CFR 52
- **Publication date:** 1999-01-11
- **Effective date:** 1999-03-12
- **State:** CA
- **EPA docket:** CA 207-0106a
## Abstract

EPA is taking direct final action to approve revisions to the California State Implementation Plan (SIP). The revisions concern for approval of Mojave Desert Air Quality Management District's (MDAQMD) Rules 474, 475, and 476 and recision of MDAQMD Rule 68. These rules control oxides of nitrogen (NO<INF>X</INF>) from fuel burning equipment, electric power generating equipment, and steam generating equipment. This action will replace the current version of three rules now in the SIP and remove one rule from the SIP. The intended effect of approving these rules is to regulate emissions of NO<INF>X</INF> in accordance with the requirements of the Clean Air Act, as amended in 1990 (CAA or the Act). EPA is finalizing the approval of these rules 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/1999/01/11/99-80/approval-and-promulgation-of-implementation-plans-california-state-implementation-plan-revision)
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