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EPA/AR

RIN: 2060-AI43

Publication ID: Fall 2006

Title: Review of the National Ambient Air Quality Standards for Carbon Monoxide
Abstract: Review of the National Ambient Air Quality Standards (NAAQS) for carbon monoxide (CO) every 5 years is mandated by the Clean Air Act. This review assesses the available scientific data about the health and environmental effects of CO and translates the science into terms that can be used in making recommendations about whether or how the standards should be changed. The last review of the CO NAAQS was completed in 1994 with a final decision that revisions were not appropriate at that time.
Agency: Environmental Protection Agency(EPA)	Priority: Other Significant
RIN Status: Previously published in the Unified Agenda	Agenda Stage of Rulemaking: Proposed Rule Stage
Major: No	Unfunded Mandates: No
CFR Citation: 40 CFR 50
Legal Authority: 42 USC 7409

Legal Deadline:

Action	Source	Description	Date
Final	Statutory	Clean Air Act requires reviews every 5 years.	05/31/2001

Statement of Need: As new health research becomes available on the effects of carbon monoxide, the Clean Air Act requires EPA to review the adequacy of the existing NAAQS at 5-year intervals.

Summary of the Legal Basis: The Clean Air Act requires review and revision of the NAAQS every five years.

Alternatives: Alternatives for revising or maintaining the NAAQS will be assessed at a later point in the review cycle, after the scientific assessment of risk is completed.

Anticipated Costs and Benefits: Costs and benefits will be evaluated later in the review cycle.

Risks: Risk information will be available later in the review cycle.

Timetable:

Action	Date	FR Cite
NPRM	01/00/2009
Final Action	11/00/2009

Additional Information: SAN No. 4266
Regulatory Flexibility Analysis Required: No	Government Levels Affected: Undetermined
Small Entities Affected: No	Federalism: No
Included in the Regulatory Plan: Yes
Agency Contact: Dave McKee Environmental Protection Agency Air and Radiation C504-06, RTP, NC 27711 Phone:919 541-5288 Email: mckee.dave@epa.gov Harvey Richmond Environmental Protection Agency Air and Radiation C504-06, Washington, DC 20460 Phone:919 541-5271 Email: Richmond.Harvey@epa.gov