# Revisions to Federal Implementation Plans To Reduce Interstate Transport of Fine Particulate Matter and Ozone
> **Rule** · Final rule. · Published 2012-02-21 · Effective 2012-04-23 · 77 FR 10324
## Document
- **Document number:** 2012-3706
- **Category:** air-emissions
- **Federal Register citation:** 77 FR 10324
- **CFR reference:** 40 CFR 52
- **Publication date:** 2012-02-21
- **Effective date:** 2012-04-23
- **EPA docket:** EPA-HQ-OAR-2009-0491
## Abstract

EPA is finalizing revisions to the Transport Rule that was published on August 8, 2011 (76 FR 48208). These revisions address discrepancies in unit-specific modeling assumptions that affect the proper calculation of Transport Rule state budgets and assurance levels in Florida, Louisiana, Michigan, Mississippi, Nebraska, New Jersey, New York, Texas, and Wisconsin, as well as new unit set-asides in Arkansas and Texas. EPA is also finalizing allowance allocation revisions to specific units covered by certain consent decrees that restrict the use of those allowances. The resulting budgets maintain substantial emission reductions from historic levels and are consistent with the final Transport Rule's methodology for defining significant contribution and interference with maintenance.\1\ ---------------------------------------------------------------------------

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/02/21/2012-3706/revisions-to-federal-implementation-plans-to-reduce-interstate-transport-of-fine-particulate-matter)
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