# Approval and Promulgation of Implementation Plans; Texas; Clean Air Interstate Rule Nitrogen Oxides Annual Trading Program
> **Rule** · Direct final rule. · Published 2007-07-30 · Effective 2007-09-28 · 72 FR 41453
## Document
- **Document number:** E7-14485
- **Category:** air-emissions
- **Federal Register citation:** 72 FR 41453
- **CFR reference:** 40 CFR 52
- **Publication date:** 2007-07-30
- **Effective date:** 2007-09-28
- **State:** TX
- **EPA docket:** EPA-R06-OAR-2007-0252
## Abstract

EPA is taking a direct final action to approve a revision to the Texas State Implementation Plan (SIP) submitted by the State of Texas on August 4, 2006, as the Texas Clean Air Interstate Rule (CAIR) Nitrogen Oxides (NO<INF>X</INF>) Annual Abbreviated SIP. The abbreviated SIP revision EPA is approving includes the Texas methodologies for allocation of annual NO<INF>X</INF> allowances for Phase 1 of CAIR, the control periods 2009 through 2014, and for allocating allowances from the compliance supplement pool (CSP) in the CAIR NO<INF>X</INF> annual trading program. EPA has determined that the Texas CAIR NO<INF>X</INF> Annual Abbreviated SIP revision satisfies the applicable requirements of a CAIR abbreviated SIP revision. Upon the effective date of approval of the Texas CAIR NO<INF>X</INF> Annual Abbreviated SIP revision, EPA by ministerial action will note in the Texas CAIR NO<INF>X</INF> Annual Federal Implementation Plan's (FIP) incorporated regulations that the Texas rules for annual NO<INF>X</INF> allowances under Phase 1 of CAIR and allocating allowances from the CSP apply, rather than the Federal FIP rules. The intended effect of this action is to reduce NO<INF>X</INF> emissions from the State of Texas that are contributing to nonattainment of the PM<INF>2.5</INF> National Ambient Air Quality Standard (NAAQS or standard) in downwind states. This action is being taken under section 110 of the Federal Clean Air Act (the Act or CAA).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2007/07/30/E7-14485/approval-and-promulgation-of-implementation-plans-texas-clean-air-interstate-rule-nitrogen-oxides)
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