Document Headings

                    Document headings vary by document type but may contain                    the following:                  
                -                       the agency or agencies that issued and signed a document                    
                -                       the number of the CFR title and the number of each part                      the document amends, proposes to amend, or is directly                      related to                    
                -                       the agency docket number / agency internal file number                    
                -                       the RIN which identifies each regulatory action listed in                      the Unified Agenda of Federal Regulatory and Deregulatory                      Actions                    

                    See the                                          Document Drafting Handbook                                        for more details.                  

###### Environmental Protection Agency

          - 40 CFR Part 52 
          - [EPA-R07-OAR-2007-0249; FRL-8310-5] 

# AGENCY:

Environmental Protection Agency (EPA). 

# ACTION:

Proposed rule. 

# SUMMARY:

EPA is proposing a revision to the Missouri State Implementation Plan (SIP) for the purpose of approving the Missouri Department of Natural Resources' (MDNR) actions to address requirements of section 110(a)(2)(D)(i) of the Clean Air Act. Section 110(a)(2)(D)(i) requires each state to submit a SIP that prohibits emissions that adversely affect another state's air quality through interstate transport. MDNR has adequately addressed the four distinct elements related to the impact of interstate transport of air pollutants. These include prohibiting significant contribution to downwind nonattainment of the National Ambient Air Quality Standards (NAAQS), interference with maintenance of the NAAQS, interference with plans in another state to prevent significant deterioration of air quality, and interference with efforts of other states to protect visibility. The requirements for public notification were also met by MDNR. 

# DATES:

Comments on this proposed action must be received in writing by June 7, 2007. 

# ADDRESSES:

Submit your comments, identified by Docket ID No. EPA-R07-OAR-2007-0249 by one of the following methods: 

                        1.                         *http://www.regulations.gov:*                         Follow the on-line instructions for submitting comments.                     

                        2.                         *E-mail: hamilton.heather@epa.gov.*

                        3.                         *Mail:*                         Heather Hamilton, Environmental Protection Agency, Air Planning and Development Branch, 901 North 5th Street, Kansas City, Kansas 66101.                     

                        4.                         *Hand Delivery or Courier.*                         Deliver your comments to Heather Hamilton, Environmental Protection Agency, Air Planning and Development Branch, 901 North 5th Street, Kansas City, Kansas                               ( print page 26046)                            66101. Such deliveries are only accepted during the Regional Office's normal hours of operation. The Regional Office's official hours of business are Monday through Friday, 8 a.m. to 4:30 p.m., excluding legal holidays.                     

                        Please see the direct final rule that is located in the Rules section of this                         **Federal Register**                         for detailed instructions on how to submit comments.                     

# FOR FURTHER INFORMATION CONTACT:

                        Heather Hamilton at (913) 551-7039, or by e-mail at                         *Hamilton.heather@epa.gov*.                     

# 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 that is located in the rules section of this                     **Federal Register**                    .                 

Dated: April 30, 2007. 

John B. Askew, 

Regional Administrator, Region 7.

[FR Doc. E7-8775 Filed 5-7-07; 8:45 am] 

BILLING CODE 6560-50-P