Approval and Promulgation of Implementation Plans; Designation of Areas for Air Quality Planning Purposes; State of Arizona; Finding of Attainment for Ajo Particulate Matter of 10 Microns or Less (PM10) Nonattainment Area; Determination Regarding Applicability of Certain Clean Air Act Requirements
air-emissions · Rule · Published 2006-02-08 · Effective 2006-04-10 · AZ · 71 FR 6352
Document
Document number
06-1174
Federal Register citation
71 FR 6352
CFR reference
40 CFR 52
Type
Rule
Action
Direct final rule.
Category
air-emissions
Publication date
2006-02-08
Effective date
2006-04-10
State
AZ
EPA docket
EPA-R09-OAR-2005-AZ-0006
Abstract
EPA is taking direct final action to determine that the Ajo moderate PM<INF>10</INF> nonattainment area in Arizona has attained the National Ambient Air Quality Standards (NAAQS) for particulate matter with an aerodynamic diameter less than or equal to a nominal 10 micrometers (PM<INF>10</INF>). This determination is based upon monitored air quality data for the PM<INF>10</INF> NAAQS during the years 2002-2004. EPA also finds that the Ajo area has continued to attain the PM<INF>10</INF> NAAQS since 2004. Based on this determination, EPA is also determining that certain Clean Air Act requirements are not applicable for so long as the Ajo area continues to attain the PM<INF>10</INF> NAAQS.