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EPA/AR

RIN: 2060-AL76

Publication ID: Fall 2005

Title: Clean Air Interstate Rule (Formerly Titled: Interstate Air Quality Rule)
Abstract: The Clean Air Act's "good neighbor" provisions require that a State take steps to prevent emissions from sources located within its boundaries from interfering with a downwind State's ability to meet national ambient air quality standards (NAAQS). On March 10, 2005, EPA signed the Clean Air Interstate Rule (CAIR) to address the interstate transport of sulfur dioxide (SO2) and nitrogen oxides (NOx) emissions that contribute significantly to nonattainment, or interfere with maintenance, of the fine particle (PM2.5) and/or 8-hour ozone NAAQS in downwind States. SO2 and NOx are precursors to fine particle formation and NOx is a precursor to ground-level ozone formation. Fine particles and ozone are associated with thousands of premature deaths and illnesses each year. The CAIR covers 23 States and the District of Columbia with respect to the PM2.5 NAAQS, and 25 States and the District of Columbia with respect to the 8-hour ozone NAAQS. Each upwind jurisdiction must revise its State implementation plan to include control measures to reduce emissions of SO2 and/or NOx. Reducing these upwind precursor emissions will assist downwind areas in achieving the NAAQS. The emissions reductions are to be implemented in 2 phases. The CAIR includes model cap and trade rules for power plants that States can choose to adopt to meet the CAIR requirements in a flexible, highly cost-effective manner.
Agency: Environmental Protection Agency(EPA)	Priority: Economically Significant
RIN Status: Previously published in the Unified Agenda	Agenda Stage of Rulemaking: Completed Actions
Major: Yes	Unfunded Mandates: No
CFR Citation: 40 CFR 51 40 CFR 72 40 CFR 73 40 CFR 74 40 CFR 77 40 CFR 78 40 CFR 96
Legal Authority: 42 USC 7410(a)

Legal Deadline: None

Timetable:

Action	Date	FR Cite
NPRM-	06/10/2004	69 FR 32684
Notice-	08/06/2004	69 FR 47828
Final Action-	05/12/2005	70 FR 25162

Additional Information: SAN No. 4794;
Regulatory Flexibility Analysis Required: No	Government Levels Affected: Federal, Local, State, Tribal
Small Entities Affected: No	Federalism: No
Energy Effects: Statement of Energy Effects planned as required by Executive Order 13211.	Included in the Regulatory Plan: No
RIN Information URL: www.epa.gov/interstateairquality
Agency Contact: Carla Oldham Environmental Protection Agency Air and Radiation 109 T.W. Alexander Drive, Mail Code C539-04, Research Triangle Park, NC 27711 Phone:919 541-3347 Fax:919 541-0824 Email: oldham.carla@epamail.epa.gov Joe Paisie Environmental Protection Agency Air and Radiation C504-02, Research Triangle Park, NC 27711 Phone:919 541-5556 Fax:919 541-0942 Email: Paisie.Joe@epa.gov