# Revisions to the Regional Haze Rule To Correct Mobile Source Provisions in Optional Program for Nine Western States and Eligible Indian Tribes Within That Geographic Area
> **Rule** · Final rule; amendments. · Published 2003-12-22 · Effective 2004-02-20 · 68 FR 71009
## Document
- **Document number:** 03-31471
- **Category:** other
- **Federal Register citation:** 68 FR 71009
- **CFR reference:** 40 CFR 51
- **Publication date:** 2003-12-22
- **Effective date:** 2004-02-20
- **EPA docket:** FRL-7601-4
## Abstract

The EPA is taking final action to approve a correction to the mobile source provisions of EPA's regional haze rule. This correction is consistent with recommendations of the Western Regional Air Partnership (WRAP). The amendments to the rule are intended to address an emissions projection scenario for mobile sources which was not addressed when EPA published the regional haze rule in 1999.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2003/12/22/03-31471/revisions-to-the-regional-haze-rule-to-correct-mobile-source-provisions-in-optional-program-for-nine)
---
*AI Analytics · CC0 1.0*