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-R09-OAR-2012-0180; FRL-9652-3]

# AGENCY:

Environmental Protection Agency (EPA).

# ACTION:

Proposed rule.

# SUMMARY:

EPA is proposing to approve revisions to the Yolo-Solano Air Quality Management District portion of the California State Implementation Plan (SIP). These revisions concern particulate matter (PM) emissions from any source that emits visible air contaminants. We are proposing to approve and rescind local rules to regulate these emission sources under the Clean Air Act as amended in 1990 (CAA or the Act).

# DATES:

Any comments on this proposal must arrive by May 18, 2012.

# ADDRESSES:

Submit comments, identified by docket number EPA-R09-OAR-2012-0180, by one of the following methods:

                        1.                         *Federal eRulemaking Portal: www.regulations.gov.*                         Follow the on-line instructions.                    

                        2.                         *Email: steckel.andrew@epa.gov.*

                        3.                         *Mail or deliver:*                         Andrew Steckel (Air-4), 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                         *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                         *www.regulations.gov*                         or email.                         *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 email directly to EPA, your email 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:*                         Generally, documents in the docket for this action are available electronically at                         *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 at                         *www.regulations.gov,*                         some information may be publicly available only at the hard copy location (e.g., copyrighted material, large maps), 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:

                        Christine Vineyard, EPA Region IX, (415) 947-4125,                         *vineyard.christine@epa.gov.*

# SUPPLEMENTARY INFORMATION:

                    This proposal addresses the following local rules: Rule 2.3, Ringelmann Chart; 2.4, Exceptions (rescinded); Rule 2.7, Wet Plumes (rescinded); Rule 2.11, Particulate Matter Concentrations; and Rule 2.12, Specific Contaminants. 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: March 8, 2012.

Jared Blumenfeld,

Regional Administrator, Region IX.

[FR Doc. 2012-8948 Filed 4-17-12; 8:45 am]

BILLING CODE 6560-50-P