# Approval and Promulgation of Implementation Plans; State of Iowa
**AGENCY:**
Environmental Protection Agency (EPA).
**ACTION:**
Proposed rule.
**SUMMARY:**
The Environmental Protection Agency (EPA) is proposing to approve the State Implementation Plan (SIP) revision submitted by the state of Iowa for the purpose of approving the 2008, 2009, 2011, 2012, and 2013 updates to the Linn County Air Quality Ordinance. EPA is proposing approval of Iowa's request to include revisions to the Linn County Air Quality Ordinance, Chapter 10, because the revisions improve the stringency of the Iowa SIP.
**DATES:**
Comments on this proposed action must be received in writing by November 20, 2014.
**ADDRESSES:**
Submit your comments, identified by Docket ID No. EPA-R07-OAR-2014-0300, by mail to Amy Algoe-Eakin, Environmental Protection Agency, Air Planning and Development Branch, 11201 Renner Boulevard, Lenexa, Kansas 66219. Comments may also be submitted electronically or through hand delivery/courier by following the detailed instructions in the *ADDRESSES* section of the direct final rule located in the rules section of this *Federal Register.*
**FOR FURTHER INFORMATION CONTACT:**
Amy Algoe-Eakin, Environmental Protection Agency, Air Planning and Development Branch, 11201 Renner Boulevard, Lenexa, Kansas 66219 at 913-551-7942, or by email at *[email protected].*
**SUPPLEMENTARY INFORMATION:**
In the final rules section of the *Federal 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 If EPA receives relevant adverse comments, the direct final rule will be withdrawn and all public comments received will be addressed in a subsequent final rule based on this proposed action.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 this *Federal Register.*
**List of Subjects in 40 CFR Part 52**
Environmental protection, Air pollution control, Carbon monoxide, Incorporation by reference, Intergovernmental relations, Lead, Nitrogen dioxide, Ozone, Particulate matter, Reporting and recordkeeping requirements, Sulfur oxides, Volatile organic compounds.
Dated: September 30, 2014.
Rebecca Weber,
Acting Regional Administrator, Region 7.