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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[EPA-R07-OAR-2012-0596; FRL 9731-2]

Approval and Promulgation of Implementation Plans; State of Missouri

AGENCY: Environmental Protection Agency (EPA).
ACTION: Proposed rule.
SUMMARY: EPA proposes to approve the State Implementation Plan (SIP) revision submitted by the state of Missouri on September 21, 2010. This revision proposes to amend the ambient air quality standards table to reflect revised National Ambient Air Quality Standards (NAAQS), update reference methods associated with the revised NAAQS, and update the breakpoint values for the Air Quality Index. These revisions would make Missouri's rules consistent with Federal regulations and improve the clarity of the rules.
DATES: Comments on this proposed action must be received in writing by October 22, 2012.
ADDRESSES: Submit your comments, identified by Docket ID No. EPA-R07-OAR-2012-0596, by mail to Amy Bhesania, Environmental Protection Agency, Air Planning and Development Branch, 901 North 5th Street, Kansas City, Kansas 66101. Comments may also be submitted electronically or through hand delivery/courier by following the detailed instructions in theADDRESSESsection of the direct final rule located in the rules section of thisFederal Register.
FOR FURTHER INFORMATION CONTACT: Amy Bhesania at (913) 551-7147, or by email atbhesania.amy@epa.gov.
SUPPLEMENTARY INFORMATION:

In the final rules section of theFederal Register, EPA is approving the state's SIP revision as a direct final rule without prior proposal because the Agency views this as a noncontroversial revision amendment and anticipates no relevant adverse comments to this action. A detailed rationale for the approval is set forth in the direct final rule. If no relevant adverse comments are received in response to this action, no further activity is contemplated in relation to this action. If EPA receives relevant adverse comments, the direct final rule will be withdrawn and all public comments received will be addressed in a subsequent final rule based on this proposed action. EPA will not institute a second comment period on this action. Any parties interested in commenting on this action should do so at this time. Please note that if EPA receives adverse comment on part of this rule and if that part can be severed from the remainder of the rule, EPA may adopt as final those parts of the rule that are not the subject of an adverse comment. For additional information, see the direct final rule which is located in the rules section of thisFederal Register.

Dated: September 11, 2012. Karl Brooks, Regional Administrator, Region 7.