### 73472 Federal Register / Vol. 78, No. 235 / Friday, December 6, 2013 / Proposed Rules

MSHA has received a subsequent request to further extend the comment period to allow time for NIOSH to finalize the studies and to provide a period for review. In response to this request, MSHA is extending the comment period to June 2, 2014.

Dated: December 4, 2013. Joseph A. Main, Assistant Secretary of Labor for Mine Safety and Health. [FR Doc. 2013–29306 Filed 12–4–13; 4:15 pm]

**BILLING CODE 4510–43–P**

**ENVIRONMENTAL PROTECTION AGENCY** 

**40 CFR Part 52**

**[EPA–R03–OAR–2013–0650; FRL–9903–77– Region 3]** 

**Approval and Promulgation of Air Quality Implementation Plans;**  **Maryland; State Boards Requirements**

**AGENCY :**  Environmental Protection Agency (EPA).

**ACTION :**  Proposed rule.

**SUMMARY :**  EPA proposes to approve the State Implementation Plan (SIP) revision submitted by the State of Maryland for the purpose of addressing the State Boards’ requirements for all criteria pollutants of the National Ambient Air Quality Standards (NAAQS). In the Final Rules section of this Federal Register, EPA is approving the State’s SIP submittal as a direct final rule without prior proposal because the Agency views this as a noncontroversial submittal and anticipates no adverse comments. A detailed rationale for the approval is set forth in the direct final rule. If no adverse comments are received in response to this action, no further activity is contemplated. If EPA receives adverse comments, the direct final rule will be withdrawn and all public comments received will be addressed in a subsequent final rule based on this proposed rule. EPA will not institute a second comment period. Any parties interested in commenting on this action should do so at this time.

**DATES :**  Comments must be received in writing by January 6, 2014.

**ADDRESSES :**  Submit your comments, identified by Docket ID Number EPA– R03–OAR–2013–0650 by one of the following methods:

A. www.regulations.gov. Follow the on-line instructions for submitting
comments.

B. Email: fernandez.cristina@epa.gov. C. Mail: EPA–R03–OAR–2013–0650, Cristina Fernandez, Associate Director, Office of Air Program Planning, Air Protection Division, Mailcode 3AP30, U.S. Environmental Protection Agency, Region III, 1650 Arch Street, Philadelphia, Pennsylvania 19103.

D. Hand Delivery: At the previously listed EPA Region III address. Such deliveries are only accepted during the Docket’s normal hours of operation, and special arrangements should be made for deliveries of boxed information.

Instructions: Direct your comments to Docket ID No. EPA–R03–OAR–2013– 0650. EPA’s policy is that all comments received 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 information claimed to be Confidential Business Information (CBI) or other information whose disclosure is restricted by statute. Do not submit information that you consider to be CBI or otherwise protected through www.regulations.gov or email. The www.regulations.gov Web site is an ‘‘anonymous access’’ system, which means EPA will not know your identity or contact information unless you provide it in the body of your comment. If you send an email comment directly to EPA without going through www.regulations.gov, your email address will be automatically captured and included as part of the comment that is placed in the public docket and made available on the Internet. If you submit an electronic comment, EPA recommends that you include your name and other contact information in the body of your comment and with any disk or CD–ROM you submit. 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: All documents in the electronic docket are listed in the www.regulations.gov index. Although listed in the index, some information is not publicly available, i.e., CBI or other information whose disclosure is restricted by statute. Certain other material, such as copyrighted material, is not placed on the Internet and will be publicly available only in hard copy form. Publicly available docket materials are available either electronically in www.regulations.gov or in hard copy during normal business hours at the Air Protection Division, U.S. Environmental Protection Agency, Region III, 1650 Arch Street, Philadelphia, Pennsylvania 19103. Copies of the State submittal are available at the Maryland Department of the Environment, 1800 Washington Boulevard, Suite 705, Baltimore, Maryland 21230.

**FOR FURTHER INFORMATION CONTACT :**  Ruth Knapp, (215) 814–2191, or by email at knapp.ruth@epa.gov.

**SUPPLEMENTARY INFORMATION :**  For further information, please see the information provided in the direct final action, with the same title, that is located in the ‘‘Rules and Regulations’’ section of this Federal Register publication. Please note that if EPA receives adverse comment on an amendment, paragraph, or section of this rule and if that provision may be severed from the remainder of the rule, EPA may adopt as final those provisions of the rule that are not the subject of an adverse comment.

Dated: November 14, 2013. W.C. Early, Acting Regional Administrator, Region III.
[FR Doc. 2013–28955 Filed 12–5–13; 8:45 am]

**BILLING CODE 6560–50–P**

**DEPARTMENT OF DEFENSE**

**Defense Acquisition Regulations System** 

**48 CFR Parts 211, 212, and 232**

**RIN 0750–AI13**

**Defense Federal Acquisition Regulation Supplement: Application of**  **Certain Clauses to Acquisitions of Commercial Items (DFARS Case 2013–**  **D035)**

**AGENCY :**  Defense Acquisition Regulations System, Department of Defense (DoD).

**ACTION :**  Proposed rule.

**SUMMARY :**  DoD is proposing to amend the Defense Federal Acquisition Regulation Supplement (DFARS) to clarify the applicability of two clauses to acquisitions of commercial items.

**DATES :**  Comment Date: Comments on the proposed rule should be submitted in writing to the address shown below on or before February 4, 2014, to be considered in the formation of a final rule.

**ADDRESSES :**  Submit comments identified by DFARS Case 2013–D035, using any of the following methods:

• Regulations.gov: http:// www.regulations.gov. Submit comments via the Federal eRulemaking portal by entering ‘‘DFARS Case 2013–D035’’ under the heading ‘‘Enter keyword or