62024 Federal Register / Vol. 75, No. 194 / Thursday, October 7, 2010 / Proposed Rules 

consideration, the Commission 

establishes a period for filing reply 

comments in this proceeding, which 

will run to and including November 12, 

2010. 

Any interested person may file a reply 

to initial comments made by other 

interested persons in this proceeding. 

Reply comments should not raise new 

arguments that are not directly 

responsive to arguments presented in 

initial comments, nor should a reply be 

repetitive of arguments that an 

interested person made in its initial 

comments. 

Kimberly D. Bose, 

Secretary. 

[FR Doc. 2010–24976 Filed 10–6–10; 8:45 am] 

BILLING CODE 6717–01–P 

DEPARTMENT OF LABOR 

Mine Safety and Health Administration 

30 CFR Parts 56 and 57 

RIN 1219–AB70 

Metal and Nonmetal Dams 

AGENCY: Mine Safety and Health 

Administration, Labor. 

ACTION: Extension of comment period. 

SUMMARY: The Mine Safety and Health 

Administration (MSHA) is extending 

the comment period for its Advance 

Notice of Proposed Rulemaking 

(ANPRM) published on August 13, 

2010. This extension gives commenters 

additional time to develop responses to 

questions the Agency asked in the 

ANPRM concerning the design, 

construction, operation, and 

maintenance of safe dams which can 

assure miners are protected from the 

hazards of dam failures. 

DATES: The comment period will close 

midnight, Eastern Standard Time, 

December 13, 2010. 

ADDRESSES: Comments must be clearly 

identified and may be submitted by any 

of the following methods: 

(1) Federal Rulemaking Portal: http://

www.regulations.gov. Follow the 

instructions for submitting comments. 

(2) Electronic mail: zzMSHAComments@dol.gov. Include ‘‘RIN 1219– 

AB56’’ in the subject line of the message. 

(3) Telefax: (202) 693–9441. Include 

‘‘RIN 1219–AB56’’ in the subject. 

(4) Regular Mail: MSHA, Office of 

Standards, Regulations, and Variances, 

1100 Wilson Blvd., Room 2350, 

Arlington, Virginia, 22209–3939. 

(5) Hand Delivery or Courier: MSHA, 

Office of Standards, Regulations, and 

Variances, 1100 Wilson Blvd., Room 

2350, Arlington, Virginia 22209–3939. 

Sign in at the receptionist’s desk on the 

21st floor. 

(6) Docket: Comments can be accessed 

electronically at http://www.msha.gov/ 

regsinfo.htm. MSHA will post all 

comments on the Internet without 

change, including any personal 

information provided. Comments may 

also be reviewed at the Office of 

Standards, Regulations, and Variances, 

1100 Wilson Blvd., Room 2350, 

Arlington, Virginia. Sign in at the 

receptionist’s desk on the 21st floor. 

MSHA maintains a list that enables 

subscribers to receive e-mail notification 

when the Agency publishes rulemaking 

documents in the Federal Register. To 

subscribe, go to http://www.msha.gov/ 

subscriptions/subscribe.aspx. 

FOR FURTHER INFORMATION CONTACT: 

Patricia W. Silvey, Director, Office of 

Standards, Regulations, and Variances, 

MSHA, 1100 Wilson Boulevard, Room 

2350, Arlington, Virginia 22209–3939. 

Ms. Silvey can be reached at 

Silvey.Patricia@dol.gov (Internet Email), (202) 693–9440 (voice), or (202) 

693–9441 (facsimile). This notice is 

available on the Internet at http://

www.msha.gov/REGSINFO.HTM. 

SUPPLEMENTARY INFORMATION: On August 

13, 2010, MSHA published an Advance 

Notice of Proposed Rulemaking (75 FR 

49429) asking interested parties to 

comment on measures to assure that 

metal and nonmetal mine operators 

design, construct, operate and maintain 

dams in a safe manner to protect miners 

against the hazards of a dam failure. 

In response to requests, MSHA is 

extending the comment period from 

October 12, 2010 to December 13, 2010. 

This allows commenters additional time 

to review the questions and submit 

responses. All comments and other 

appropriate data must be submitted by 

midnight, Eastern Standard Time, 

December 13, 2010. 

Dated: October 1, 2010. 

Joseph A. Main, 

Assistant Secretary for Mine Safety and 

Health. 

[FR Doc. 2010–25248 Filed 10–6–10; 8:45 am] 

BILLING CODE 4510–43–P 

ENVIRONMENTAL PROTECTION 

AGENCY 

40 CFR Part 52 

[EPA–R04–OAR–2009–0041–200902; FRL– 

9211–4] 

Approval and Promulgation of 

Implementation Plans; State of 

Mississippi: Prevention of Significant 

Deterioration Rules: Nitrogen Oxide as 

a Precursor to Ozone 

AGENCY: Environmental Protection 

Agency (EPA). 

ACTION: Proposed rule. 

SUMMARY: EPA is proposing to approve 

a portion of a revision to the Mississippi 

State Implementation Plan (SIP), 

submitted by the Mississippi 

Department of Environmental Quality 

(MDEQ), to EPA on November 28, 2007. 

The revision modifies Mississippi’s 

prevention of significant deterioration 

(PSD) permitting regulations in the SIP 

to address permit requirements 

promulgated in the 1997 8–Hour Ozone 

National Ambient Air Quality Standards 

(NAAQS) Implementation Rule-Phase II 

(hereafter referred to as the ‘‘Ozone 

Implementation New Source Review 

(NSR) Update’’). The Ozone 

Implementation NSR Update revised 

permit requirements relating to the 

implementation of the 1997 8-hour 

ozone NAAQS specifically 

incorporating nitrogen oxides (NOX) as 

a precursor to ozone. Specifically, this 

SIP revision incorporates by reference 

the Ozone Implementation NSR Update 

federal regulations into the Mississippi 

SIP through Air Pollution Control 

Section 5 (APC–S–5) ‘‘Regulations for 

the Prevention of Significant 

Deterioration of Air Quality.’’ EPA’s 

approval of Mississippi’s incorporation 

by reference of the Ozone 

Implementation NSR Update federal 

regulations, including provisions to 

recognize NOX as an ozone precursor, 

into the Mississippi SIP, is based on 

EPA’s determination that Mississippi’s 

revision related to these provisions 

complies with current Federal 

requirements and section 110 of the 

Clean Air Act (CAA). 

EPA is not taking action on two 

portions of Mississippi’s November 28, 

2007 submittal. The first is regarding 

Mississippi’s incorporation by reference 

of provisions promulgated by EPA on 

May 1, 2007, which exclude from the 

NSR major source permitting 

requirements ‘‘chemical process plants’’ 

that produce ethanol through a natural 

fermentation process (hereafter referred 

to as the ‘‘Ethanol Rule’’). See 72 FR 

24060. EPA may consider further action 


jdjones on DSK8KYBLC1PROD with PROPOSALS-1