Determination of Attainment for the Carbon Monoxide National Ambient Air Quality Standard for the Phoenix Metropolitan Area, Arizona
air-emissions · Rule · Published 2003-09-22 · Effective 2003-11-21 · AZ · 68 FR 55008
Document
Document number
03-24002
Federal Register citation
68 FR 55008
CFR reference
40 CFR 81
Type
Rule
Action
Direct final rule.
Category
air-emissions
Publication date
2003-09-22
Effective date
2003-11-21
State
AZ
EPA docket
AZ-094-FOAa
Abstract
EPA is taking direct final action to find that the Phoenix metropolitan nonattainment area in Arizona has attained the National Ambient Air Quality Standards (NAAQS) for carbon monoxide (CO) by its Clean Air Act deadline of December 31, 2000. The Phoenix area has had no qualifying exceedances of the CO standard since 1996, and has six years of clean air quality data.