# Approval and Promulgation of Implementation Plans; State of Missouri
> **Rule** · Final rule. · Published 2006-08-15 · Effective 2006-09-14 · 71 FR 46860
## Document
- **Document number:** E6-13347
- **Category:** air-emissions
- **Federal Register citation:** 71 FR 46860
- **CFR reference:** 40 CFR 52
- **Publication date:** 2006-08-15
- **Effective date:** 2006-09-14
- **State:** MO
- **EPA docket:** EPA-R07-OAR-2006-0467
## Abstract

EPA is taking final action to approve Missouri's nitrogen oxides (NO<INF>X</INF>) plan for the eastern one-third of the state. The plan consists of three rules, a budget demonstration, and supporting documentation. The plan will contribute to attainment and maintenance of the 8-hour ozone standard in several downwind areas. Missouri's plan, which focuses on large electric generating units, large industrial boilers, large stationary internal combustion engines, and large cement kilns, was developed to meet the requirements of EPA's April 21, 2004, Phase II NO<INF>X</INF> State Implementation Plan (SIP) Call. EPA is taking final action to approve the plan as a SIP revision fulfilling the NO<INF>X</INF> SIP Call requirements. The initial period for compliance under the plan will begin in 2007, and the emission monitoring and reporting requirements for sources holding allowances under the plan began on May 1, 2006.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2006/08/15/E6-13347/approval-and-promulgation-of-implementation-plans-state-of-missouri)
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