[Federal Register Volume 74, Number 197 (Wednesday, October 14, 2009)]
[Proposed Rules]
[Page 52717]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: E9-24548]



40 CFR Part 52

[EPA-R09-OAR-2009-0339; FRL-8947-3]

Revisions to the Arizona State Implementation Plan, Maricopa 
County Air Quality Department

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule.


SUMMARY: EPA is proposing to approve revisions to the Maricopa County 
Air Quality Department (MCAQD) portion of the Arizona State 
Implementation Plan (SIP). These revisions concern particulate matter 
(PM) emissions and precursors from steam generating units, cogeneration 
units, stationary gas turbines, process heaters and internal combustion 
engines. We are proposing to approve local rules to regulate these 
emission sources under the Clean Air Act as amended in 1990 (CAA or the 

DATES: Any comments on this proposal must arrive by November 13, 2009.

ADDRESSES: Submit comments, identified by docket number [EPA-R09-OAR-
2009-0339], by one of the following methods:
    1. Federal eRulemaking Portal: www.regulations.gov. Follow the on-
line instructions.
    2. E-mail: [email protected].
    3. Mail or deliver: Andrew Steckel (Air-4), U.S. Environmental 
Protection Agency Region IX, 75 Hawthorne Street, San Francisco, CA 
    Instructions: All comments will be included in the public docket 
without change and may be made available online at 
http:[sol][sol]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 
http:[sol][sol]www.regulations.gov or e-mail. 
http:[sol][sol]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. Electronic files should avoid 
the use of special characters, any form of encryption, and be free of 
any defects or viruses.
    Docket: The index to the docket for this action is available 
electronically at http:[sol][sol]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 

972-3248, [email protected].

SUPPLEMENTARY INFORMATION: This proposal addresses the following local 
rules: 322, Power Plant Operations, 323, Fuel Burning Equipment from 
Industrial/Commercial/Institutional (ICI) Sources and 324, Stationary 
Internal Combustion (IC) Engines. In the Rules and Regulations section 
of this Federal Register, we are approving these local rules in a 
direct final action without prior proposal because we believe these SIP 
revisions are 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. Please note that if we receive adverse comment on an amendment, 
paragraph, or section of this rule and if that provision may be severed 
from the remainder of the rule, we may adopt as final those provisions 
of the rule that are not the subject of an adverse comment.
    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 adverse comments, no further activity is planned. For further 
information, please see the direct final action.

    Dated: July 10, 2009.
Jane Diamond,
Deputy Regional Administrator, Region IX.
[FR Doc. E9-24548 Filed 10-13-09; 8:45 am]