[Federal Register Volume 71, Number 49 (Tuesday, March 14, 2006)]
[Proposed Rules]
[Page 13063]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 06-2429]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Parts 52 and 81

[EPA-R09-OAR-2006-0041; FRL-8045-2]


Approval and Promulgation of Implementation Plans; Designation of 
Areas for Air Quality Planning Purposes; State of Arizona; Particulate 
Matter of 10 Microns or Less; Finding of Attainment for Yuma 
Nonattainment Area; Determination Regarding Applicability of Certain 
Clean Air Act Requirements

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule.

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SUMMARY: EPA is proposing, under the Clean Air Act, to determine that 
the Yuma 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 
(PM10). This proposed determination is based upon monitored 
air quality data for the PM10 NAAQS during the years 1998-
2000. EPA is also proposing to find that the Yuma area is currently in 
attainment of the PM10 NAAQS, and based on this finding, EPA 
is proposing to determine that certain Clean Air Act requirements are 
not applicable for so long as the Yuma area continues to attain the 
PM10 NAAQS.

DATES: Any comments on this proposal must arrive by April 13, 2006.

ADDRESSES: Submit comments, identified by docket number EPA-R09-OAR-
2006-0041, by one of the following methods:
    (1) Federal eRulemaking portal: http://www.regulations.gov. Follow 
the on-line instructions.
    (2) E-mail: [email protected].
    (3) Mail or deliver: Rebecca Rosen (AIR-2), U.S. Environmental 
Protection Agency Region IX, 75 Hawthorne Street, San Francisco, CA 
94105-3901.
    Instructions: All comments will be included in the public docket 
without change and may be made available online at http://www.regulations.gov, including any personal information provided, 
unless the comment includes Confidential Business Information (CBI) or 
other information whose disclosure is restricted by statute. 
Information that you consider CBI or otherwise protected should be 
clearly identified as such and should not be submitted through the 
http://www.regulations.gov or e-mail. http://www.regulations.gov is an 
``anonymous access'' system, and EPA will not know your identity or 
contact information unless you provide it in the body of your comment. 
If you send e-mail directly to EPA, your e-mail address will be 
automatically captured and included as part of the public comment. If 
EPA cannot read your comment due to technical difficulties and cannot 
contact you for clarification, EPA may not be able to consider your 
comment.
    Docket: The index to the docket for this action is available 
electronically at http://www.regulations.gov and in hard copy at EPA 
Region IX, 75 Hawthorne Street, San Francisco, California. While all 
documents in the docket are listed in the index, some information may 
be publicly available only at the hard copy location (e.g., copyrighted 
material), and some may not be publicly available in either location 
(e.g., CBI). To inspect the hard copy materials, please schedule an 
appointment during normal business hours with the contact listed in the 
FOR FURTHER INFORMATION CONTACT section.

FOR FURTHER INFORMATION CONTACT: Rebecca Rosen, EPA Region IX, (415) 
947-4152, [email protected].

SUPPLEMENTARY INFORMATION: This proposal addresses the determination 
that the Yuma nonattainment area in Arizona has attained the NAAQS for 
particulate matter with an aerodynamic diameter less than or equal to a 
nominal 10 micrometers (PM10). This determination is based 
upon monitored air quality data for PM10 during the years 
1998-2000. EPA also proposes to find that the Yuma area is currently 
attaining the standard, and based on this finding, EPA is proposing to 
determine that certain requirements that otherwise apply under the 
Clean Air Act to moderate PM10 nonattainment areas, such as 
the Yuma area, are not applicable for so long as the area continues to 
attain the PM10 NAAQS.
    In the Rules and Regulations section of this Federal Register, we 
are taking direct final action to make these determinations because we 
believe this action is not controversial. If we receive adverse 
comments, however, we will publish a timely withdrawal of the direct 
final rule and address the comments in subsequent action based on this 
proposed rule. We do not plan to open a second comment period, so 
anyone interested in commenting should do so at this time. If we do not 
receive comments, no further activity is planned. For further 
information on this proposal and the rationale underlying our proposed 
action, please see the direct final action.

    Dated: March 1, 2006.
Wayne Nastri,
Regional Administrator, Region IX.
[FR Doc. 06-2429 Filed 3-13-06; 8:45 am]
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