9984 Federal Register / Vol. 76, No. 36 / Wednesday, February 23, 2011 / Proposed Rules 

outlet fitting containing red anodized 

threads. These MFCV do not provide 

adequate electrical bonding between the 

valve and the adjacent fitting. 

In the absence of proper electrical bonding 

within the motive flow system, the aeroplane 

fuel tank could be exposed to ignition 

sources in the case of a lightning strike. 

* * * * * 

The unsafe condition is the potential for 

ignition sources inside the fuel tanks, which, 

in combination with flammable fuel vapors, 

could result in a fuel tank explosion and 

consequent loss of the airplane. 

Compliance 

(f) You are responsible for having the 

actions required by this AD performed within 

the compliance times specified, unless the 

actions have already been done. 

Actions 

(g) Within 6,000 flight hours after the 

effective date of this AD, do a general visual 

inspection for red anodized threads of the 

outlet fitting of the MFCV having P/N 

2960018–101 installed in the left and right 

wing fuel tanks, in accordance with the 

Accomplishment Instructions of Bombardier 

Service Bulletin 84–28–08, dated March 11, 

2010. If the MFCV has a chemical film 

coating (gold color) outlet fitting, no further 

action is required by AD, except as required 

by paragraph (i) of this AD. 

(h) If during the inspection required by 

paragraph (g) of this AD, a MFCV having a 

red anodized check valve outlet fitting is 

found: Before further flight, replace the 

MFCV with a MFCV that has a chemical film 

coating (gold color) check valve outlet fitting, 

in accordance with the Accomplishment 

Instructions of Bombardier Service Bulletin 

84–28–08, dated March 11, 2010. 

(i) As of the effective date of this AD, no 

person may install a replacement MFCV 

having P/N 2960018–101, with a red 

anodized check valve outlet fitting, on any 

airplane. 

FAA AD Differences 

Note 1: This AD differs from the MCAI 

and/or service information as follows: No 

differences. 

Other FAA AD Provisions 

(j) The following provisions also apply to 

this AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, New York Aircraft 

Certification Office (ACO), ANE–170, FAA, 

has the authority to approve AMOCs for this 

AD, if requested using the procedures found 

in 14 CFR 39.19. Send information to ATTN: 

Program Manager, Continuing Operational 

Safety, FAA, New York ACO, 1600 Stewart 

Avenue, Suite 410, Westbury, New York 

11590; telephone 516–228–7300; fax 516– 

794–5531. Before using any approved AMOC 

on any airplane to which the AMOC applies, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local flight standards district office/ 

certificate holding district office. The AMOC 

approval letter must specifically reference 

this AD. 

(2) Airworthy Product: For any requirement 

in this AD to obtain corrective actions from 

a manufacturer or other source, use these 

actions if they are FAA-approved. Corrective 

actions are considered FAA-approved if they 

are approved by the State of Design Authority 

(or their delegated agent). You are required 

to assure the product is airworthy before it 

is returned to service. 

Related Information 

(k) Refer to TCCA Airworthiness Directive 

CF–2010–21, dated July 20, 2010; and 

Bombardier Service Bulletin 84–28–08, dated 

March 11, 2010; for related information. 

Issued in Renton, Washington on February 

14, 2011. 

Kalene C. Yanamura, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2011–4011 Filed 2–22–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2011–0139; Directorate 

Identifier 2010–CE–057–AD] 

RIN 2120–AA64 

Airworthiness Directives; B/E 

Aerospace, Continuous Flow 

Passenger Oxygen Mask Assembly, 

Part Numbers 174006–(), 174080–(), 

174085–(), 174095–(), 174097–(), and 

174098–() 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for the 

products listed above, except for those 

that are currently affected by similar 

action through any of five ADs 

applicable to Boeing products. This 

proposed AD would require an 

inspection/records check to determine 

the manufacturer and part number of 

the oxygen mask assemblies installed, 

an inspection to determine the 

manufacturing date and modification 

status if certain oxygen mask assemblies 

are installed, and corrective action for 

certain oxygen mask assemblies. This 

proposed AD was prompted by a report 

that several oxygen mask assemblies 

with broken in-line flow indicators were 

found following a mask deployment. We 

are proposing this AD to prevent the inline flow indicators of the oxygen mask 

assembly from fracturing and 

separating, which could inhibit oxygen 

flow to the masks. This condition could 

consequently result in occupants 

developing hypoxia following a 

depressurization event. 

DATES: We must receive comments on 

this proposed AD by April 11, 2011. 

ADDRESSES: You may send comments by 

any of the following methods: 

• Federal eRulemaking Portal: Go to 

http://www.regulations.gov. Follow the 

instructions for submitting comments. 

• Fax: 202–493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue, SE., 

Washington, DC 20590. 

• Hand Delivery: Deliver to Mail 

address above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

For service information identified in 

this proposed AD, contact B/E 

Aerospace, 10800 Pflumm Road, 

Lenexa, Kansas 66215; telephone: 913– 

888–9800; fax: 913–469–8419; Internet: 

http://www.beaerospace.com. You may 

review copies of the referenced service 

information at the FAA, Small Airplane 

Directorate, 901 Locust, Kansas City, 

Missouri 64106. For information on the 

availability of this material at the FAA, 

call 816–329–4148. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http:// 

www.regulations.gov; or in person at the 

Docket Management Facility between 9 

a.m. and 5 p.m., Monday through 

Friday, except Federal holidays. The AD 

docket contains this proposed AD, the 

regulatory evaluation, any comments 

received, and other information. The 

street address for the Docket Office 

(phone: 800–647–5527) is in the 

ADDRESSES section. Comments will be 

available in the AD docket shortly after 

receipt. 

FOR FURTHER INFORMATION CONTACT: 

David Fairback, Aerospace Engineer, 

Wichita Aircraft Certification Office, 

FAA, 1801 Airport Road, Room 100, 

Wichita, Kansas 67209; telephone: (316) 

946–4154; fax: (316) 946–4107; e-mail: 

david.fairback@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments about 

this proposal. Send your comments to 

an address listed under the ADDRESSES

section. Include ‘‘Docket No. FAA– 

2011–0139; Directorate Identifier 2010– 

CE–057–AD’’ at the beginning of your 

comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of this proposed AD. We will 

WReier-Aviles on DSKDVH8Z91PROD with PROPOSALS

Federal Register / Vol. 76, No. 36 / Wednesday, February 23, 2011 / Proposed Rules 9985 

consider all comments received by the 

closing date and may amend this 

proposed AD because of those 

comments. 

We will post all comments we 

receive, without change, to http:// 

www.regulations.gov, including any 

personal information you provide. We 

will also post a report summarizing each 

substantive verbal contact we receive 

about this proposed AD. 

Discussion 

We received a report that several 

oxygen mask assemblies with broken inline flow indicators were found 

following a mask deployment. That 

report prompted us to issue the 

following ADs: 

• AD 2007–26–06, amendment 39– 

15308 (72 FR 71210, December 17, 

2007), for certain Boeing Model 747– 

200B, 747–300, and 747–400 series 

airplanes identified in Boeing Service 

Bulletin 747–35–2119, dated November 

30, 2006; 

• AD 2008–08–08, amendment 39– 

15460 (73 FR 19982, April 14, 2008), for 

certain Boeing Model 757–200, 757– 

200CB, 757–200PF, and 757–300 series 

airplanes identified in Boeing Special 

Attention Service Bulletin 757–35– 

0028, dated April 9, 2007; 

• AD 2008–12–05, amendment 39– 

15548 (73 FR 32996, June 11, 2008), for 

certain Boeing Model 777–200, 777– 

200LR, 777–300, and 777–300ER series 

airplanes identified in Boeing Special 

Attention Service Bulletin 777–35– 

0019, dated March 9, 2006; 

• AD 2008–13–21, amendment 39– 

15584 (73 FR 37781, July 2, 2008), for 

certain Boeing Model 767–200, 767– 

300, and 767–400ER series airplanes 

identified in Boeing Special Attention 

Service Bulletin 767–35–0054, dated 

July 6, 2006; and 

• AD 2010–14–06, amendment 39– 

16351 (75 FR 38014, July 1, 2010), for 

certain Boeing Model 737–200, 737– 

300, 737–400, and 737–500 series 

airplanes identified in Boeing Special 

Attention Service Bulletin 737–35– 

1099, Revision 1, dated April 23, 2009. 

Those ADs require an inspection to 

determine the manufacturer and 

manufacture date of certain oxygen 

mask assemblies and corrective action if 

necessary. We issued those ADs to 

prevent the in-line flow indicators of the 

oxygen mask assembly from fracturing 

and separating, which could inhibit 

oxygen flow to the masks. This 

condition could consequently result in 

occupants developing hypoxia 

following a depressurization event. 

Actions Since Existing ADs Were Issued 

Since we issued the ADs listed in the 

previous section, we determined that 

the oxygen mask assemblies on the 

affected aircraft have the same flow 

indicators as those installed on certain 

oxygen mask assemblies manufactured 

under B/E Aerospace Technical 

Standard Order Authorization (TSOA) 

for Technical Standard Order (TSO) 

TSO–C64 and TSO–C64A. Articles 

manufactured under a TSOA may be 

installed on various aircraft by a 

supplemental type certificate or field 

approval. Therefore, we have 

determined that aircraft other than those 

identified in the ADs listed in the 

previous section may also be subject to 

the identified unsafe condition. 

This condition, if not corrected, could 

result in the in-line flow indicators of 

the oxygen mask assembly fracturing 

and separating, which could inhibit 

oxygen flow to the masks and 

consequently result in occupants 

developing hypoxia following a 

depressurization event. 

Relevant Service Information 

We reviewed B/E Aerospace Service 

Bulletin 174080–35–04, Rev 000, dated 

September 6, 2010. The service 

information describes procedures for 

identifying an affected oxygen mask 

assembly and modifying the oxygen 

mask assembly by replacing the in-line 

flow indicator with an improved in-line 

flow indicator. 

FAA’s Determination 

We are proposing this AD because we 

evaluated all the relevant information 

and determined the unsafe condition 

described previously is likely to exist or 

develop in other products of the same 

type design. 

Proposed AD Requirements 

This proposed AD would require 

accomplishing the actions specified in 

the service information described 

previously. 

Differences Between the Proposed AD 

and the Service Information 

B/E Aerospace Service Bulletin 

174080–35–04, Rev 000, dated 

September 6, 2010, lists all affected 

oxygen mask assembly part numbers; 

including part numbers listed in B/E 

Aerospace Service Bulletin 174080–35– 

01, February 6, 2006 (original issue); 

Revision 1, dated May 1, 2006; and 

Revision 2, dated May 28, 2008. The 

oxygen mask assemblies affected by AD 

2007–26–06, AD 2008–08–08, AD 2008– 

12–05, AD 2008–13–21, or AD 2010–14– 

06 are not affected by this proposed AD. 

Costs of Compliance 

We estimate that this proposed AD 

affects 400,000 oxygen mask assemblies. 

We estimate the following costs to 

comply with this proposed AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Replace the in-line flow indicator per 

mask.

0.5 work-hour × $85 per hour = $42.50 ... $6.00 $48.50 $19,400,000 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s authority to issue 

rules on aviation safety. Subtitle I, 

section 106, describes the authority of 

the FAA Administrator. Subtitle VII: 

Aviation Programs, describes in more 

detail the scope of the Agency’s 

authority. 

We are issuing this rulemaking under 

the authority described in subtitle VII, 

part A, subpart III, section 44701: 

‘‘General requirements.’’ Under that 

section, Congress charges the FAA with 

promoting safe flight of civil aircraft in 

air commerce by prescribing regulations 

for practices, methods, and procedures 

the Administrator finds necessary for 

safety in air commerce. This regulation 

is within the scope of that authority 

because it addresses an unsafe condition 

that is likely to exist or develop on 

products identified in this rulemaking 

action. 

Regulatory Findings 

We determined that this proposed AD 

would not have federalism implications 

under Executive Order 13132. This 

proposed AD would not have a 

substantial direct effect on the States, on 

the relationship between the national 

Government and the States, or on the 

distribution of power and 

responsibilities among the various 

levels of government. 

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9986 Federal Register / Vol. 76, No. 36 / Wednesday, February 23, 2011 / Proposed Rules 

For the reasons discussed above, I 

certify this proposed regulation: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

(2) Is not a ‘‘significant rule’’ under the 

DOT Regulatory Policies and Procedures 

(44 FR 11034, February 26, 1979), 

(3) Will not affect intrastate aviation 

in Alaska, and 

(4) Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

The Proposed Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA proposes to amend 14 CFR part 

39 as follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

1. The authority citation for part 39 

continues to read as follows: 

Authority: 49 U.S.C. 106(g), 40113, 44701. 

§ 39.13 [Amended] 

2. The FAA amends § 39.13 by adding 

the following new airworthiness 

directive (AD): 

B/E Aerospace: Docket No. FAA–2011–0139; 

Directorate Identifier 2010–CE–057–AD. 

Comments Due Date 

(a) We must receive comments by April 11, 

2011. 

Affected ADs 

(b) None. This AD does not revise or 

supersede any existing ADs. The following 

ADs address the unsafe condition described 

in paragraph (e) of this AD for certain 

installations on certain Boeing airplanes: 

(1) AD 2007–26–06, amendment 39–15308 

(72 FR 71210, December 17, 2007), for certain 

Boeing Model 747–200B, 747–300, and 747– 

400 series airplanes identified in Boeing 

Service Bulletin 747–35–2119, dated 

November 30, 2006; 

(2) AD 2008–08–08, amendment 39–15460 

(73 FR 19982, April 14, 2008), for certain 

Boeing Model 757–200, 757–200CB, 757– 

200PF, and 757–300 series airplanes 

identified in Boeing Special Attention 

Service Bulletin 757–35–0028, dated April 9, 

2007; 

(3) AD 2008–12–05, amendment 39–15548 

(73 FR 32996, June 11, 2008), for certain 

Boeing Model 777–200, 777–200LR, 777–300, 

and 777–300ER series airplanes identified in 

Boeing Special Attention Service Bulletin 

777–35–0019, dated March 9, 2006; 

(4) AD 2008–13–21, amendment 39–15584 

(73 FR 37781, July 2, 2008), for certain 

Boeing Model 767–200, 767–300, and 767– 

400ER series airplanes identified in Boeing 

Special Attention Service Bulletin 767–35– 

0054, dated July 6, 2006; and 

(5) AD 2010–14–06, amendment 39–16351 

(75 FR 38014, July 1, 2010), for certain The 

Boeing Company Model 737–200, 737–300, 

737–400, and 737–500 series airplanes 

identified in Boeing Special Attention 

Service Bulletin 737–35–1099, Revision 1, 

dated April 23, 2009. 

Applicability 

(c) This AD applies to B/E Aerospace, 

Continuous Flow Passenger Oxygen Mask 

Assembly; Part Numbers 174006–(), 174080– 

(), 174085–(), 174095–(), 174097–(), and 

174098–() as listed in B/E Aerospace Service 

Bulletin 174080–35–04, Rev 000, dated 

September 6, 2010, that are installed on any 

aircraft except for those Boeing airplanes 

specified in the ADs referenced in paragraphs 

(b)(1), (b)(2), (b)(3), (b)(4), and (b)(5) of this 

AD. 

Note: The service bulletin lists the part 

numbers with a suffix of ‘‘XX.’’ The TSO 

Index lists the part numbers with the suffix 

of ‘‘().’’ For the purposes of this AD, we have 

used ‘‘().’’ 

Subject 

(d) Joint Aircraft System Component 

(JASC)/Air Transport Association (ATA) of 

America Code 35: Oxygen. 

Unsafe Condition 

(e) This AD was prompted by a report that 

several oxygen mask assemblies with broken 

in-line flow indicators were found following 

a mask deployment. We are issuing this AD 

to prevent the in-line flow indicators of the 

oxygen mask assembly from fracturing and 

separating, which could inhibit oxygen flow 

to the masks. This condition could 

consequently result in occupants developing 

hypoxia following a depressurization event. 

Compliance 

(f) Comply with this AD within the 

compliance times specified, unless already 

done. 

Records Check/Inspection 

(g) Within 36 months after the effective 

date of this AD or within 6,500 hours timein-service after the effective date of this AD, 

whichever occurs first, do the following: 

(1) Do a records check to determine if any 

oxygen mask assembly part number listed in 

B/E Aerospace Service Bulletin 174080–35– 

04, Rev 000, dated September 6, 2010, is 

installed. If you cannot positively determine 

the manufacturer and part number of any 

oxygen mask assembly installed, do a general 

visual inspection to determine if any oxygen 

mask assembly part number listed in B/E 

Aerospace Service Bulletin 174080–35–04, 

Rev 000, dated September 6, 2010, is 

installed. If you can positively determine that 

no oxygen mask assembly part number listed 

in B/E Aerospace Service Bulletin 174080– 

35–04, Rev 000, dated September 6, 2010, is 

installed, no further action is required by this 

paragraph. 

(2) If, as a result of the records check/ 

inspection required in paragraph (g)(1) of this 

AD, you determine that an oxygen mask 

assembly part number listed in B/E 

Aerospace Service Bulletin 174080–35–04, 

Rev 000, dated September 6, 2010, is 

installed, inspect the oxygen mask assembly 

to determine if the in-line flow indicator 

must be replaced following paragraph II.A. of 

B/E Aerospace Service Bulletin 174080–35– 

04, Rev 000, dated September 6, 2010. If you 

can positively determine that the in-line flow 

indicator does not require replacement, no 

further action is required by this paragraph. 

Modification/Replacement 

(h) Before further flight after the inspection 

in paragraph (g)(2) of this AD where you 

determined the in-line flow indicator must be 

replaced, modify the oxygen mask assembly 

by replacing the in-line flow indicator 

following B/E Aerospace Service Bulletin 

174080–35–04, Rev 000, dated September 6, 

2010. As an alternative to modifying the 

oxygen mask assembly, you may replace the 

oxygen mask assembly with an airworthy 

oxygen mask assembly FAA-approved for 

installation on the aircraft. 

Parts Installation 

(i) As of the effective date of this AD, no 

person may install a B/E Aerospace oxygen 

mask assembly having a part number listed 

in B/E Aerospace Service Bulletin 174080– 

35–04, Rev 000, dated September 6, 2010, 

with a manufacturing date on or after January 

1, 2002, and before March 1, 2006, on any 

aircraft, unless it has been modified in 

accordance with the requirements of 

paragraph (h) of this AD. 

Alternative Methods of Compliance 

(AMOCs) 

(j)(1) The Manager, Wichita Aircraft 

Certification Office (ACO), FAA, has the 

authority to approve AMOCs for this AD, if 

requested using the procedures found in 14 

CFR 39.19. In accordance with 14 CFR 39.19, 

send your request to your principal inspector 

or local Flight Standards District Office, as 

appropriate. If sending information directly 

to the manager of the ACO, send it to the 

attention of the person identified in the 

Related Information section of this AD. 

(2) Before using any approved AMOC, 

notify your Principal Maintenance Inspector 

or Principal Avionics Inspector, as 

appropriate, or lacking a principal inspector, 

your local Flight Standards District Office. 

Related Information 

(k) For more information about this AD, 

contact David Fairback, Aerospace Engineer, 

Wichita ACO, FAA, 1801 Airport Road, 

Room 100, Wichita, Kansas 67209; telephone: 

(316) 946–4154; fax: (316) 946–4107; e-mail: 

david.fairback@faa.gov. 

(l) For service information identified in 

this AD, contact B/E Aerospace, 10800 

Pflumm Road, Lenexa, Kansas 66215; 

telephone: 913–888–9800; fax: 913–469– 

8419; Internet: http://www.beaerospace.com. 

You may review copies of the referenced 

service information at the FAA, Small 

Airplane Directorate, 901 Locust, Kansas 

City, Missouri 64106. For information on the 

availability of this material at the FAA, call 

816–329–4148. 

WReier-Aviles on DSKDVH8Z91PROD with PROPOSALS

Federal Register / Vol. 76, No. 36 / Wednesday, February 23, 2011 / Proposed Rules 9987 

Issued in Kansas City, Missouri, on 

February 15, 2011. 

Earl Lawrence, 

Manager, Small Airplane Directorate, Aircraft 

Certification Service. 

[FR Doc. 2011–4046 Filed 2–22–11; 8:45 am] 

BILLING CODE 4910–13–P 

ENVIRONMENTAL PROTECTION 

AGENCY 

40 CFR Part 82 

[EPA–HQ–OAR–2003–0167; FRL–9270–2] 

Protection of Stratospheric Ozone: 

Amendments to the Section 608 Leak 

Repair Requirements 

AGENCY: Environmental Protection 

Agency (EPA). 

ACTION: Proposed rule; reopening of 

public comment period. 

SUMMARY: EPA issued a proposed rule in 

the December 15, 2010, Federal Register 

proposing changes to the leak repair 

regulations promulgated under Section 

608 of the Clean Air Act Amendments 

of 1990. In response to stakeholder 

requests, this action reopens the public 

comment period through March 25, 

2011. 

DATES: Comments, identified by docket 

ID number EPA–HQ–OAR–2003–0167, 

must be received on or before March 25, 

2011. 

ADDRESSES: Submit your comments to 

docket EPA–HQ–OAR–2003–0167 by 

one of the following methods: 

Federal eRulemaking Portal: http:// 

www.regulations.gov. Follow the on-line 

instructions for submitting comments. 

E-mail: a-and-r-Docket@epa.gov. 

Mail: Environmental Protection 

Agency. EPA Docket Center (EPA/DC), 

Mailcode 6102T, Attention Docket ID 

No. EPA–HQ–OAR–2003–0167, 1200 

Pennsylvania Avenue, NW., 

Washington, DC 20460. 

Hand Delivery: Public Reading Room, 

Room 3334, EPA West Building, 1301 

Constitution Avenue, NW., Washington, 

DC. 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–HQ–OAR–2003– 

0167. EPA’s policy is that all comments 

received will be included in the public 

docket without change and may be 

made available online at http:// 

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 http:// 

www.regulations.gov or e-mail. The 

http://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 e-mail comment directly 

to EPA without going through http:// 

www.regulations.gov your e-mail 

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 and any form of 

encryption, and be free of any defects or 

viruses. 

Docket: All documents in the docket 

are listed in the http:// 

www.regulations.gov index. Although 

listed in the index, some information is 

not publicly available: e.g., CBI or other 

information whose disclosure is 

restricted by statute. Certain other 

material, such as copyrighted material, 

will be publicly available only in hard 

copy. 

Publicly available docket materials 

are available either electronically in 

http://www.regulations.gov or in hard 

copy at the Air Docket, EPA/DC, EPA 

West, Room 3334, 1301 Constitution 

Ave., NW., Washington, DC. This 

Docket Facility is open from 8:30 a.m. 

to 4:30 p.m., Monday through Friday, 

excluding legal holidays. The telephone 

number for the Public Reading Room is 

(202) 566–1744, and the telephone 

number for the Air Docket is (202) 566– 

1742. 

FOR FURTHER INFORMATION CONTACT: Ross 

Brennan, Stratospheric Protection 

Division, Office of Atmospheric 

Programs; Environmental Protection 

Agency, Mail Code 6205J, 1200 

Pennsylvania Ave., NW., Washington, 

DC 20460; telephone number (202) 343– 

9226; fax number (202) 343–2338; email address brennan.ross@epa.gov. 

More information about EPA’s leak 

repair requirements under Section 608, 

including a copy of the proposed rule, 

is available at http://epa.gov/ozone/ 

title6/608/leak.html. 

SUPPLEMENTARY INFORMATION: 

Background 

The statutory and regulatory 

background is described in detail in the 

December 15, 2010, notice of proposed 

rulemaking (75 FR 78558). EPA has 

proposed to lower the leak repair trigger 

rates for comfort cooling, commercial 

refrigeration, and industrial process 

refrigeration and air-conditioning 

equipment with refrigerant charges 

greater than 50 pounds of ozonedepleting substances. This action 

proposes to streamline existing required 

practices and associated reporting and 

recordkeeping requirements by 

establishing similar leak repair 

requirements for owners or operators of 

comfort cooling, commercial 

refrigeration, and industrial process 

refrigeration appliances. This action 

also proposes to reduce the use and 

emissions of class I and class II 

controlled substances (such as but not 

limited to CFC–11, CFC–12, HCFC–123, 

and HCFC–22) by requiring verification 

and documentation of all repairs, 

retrofit or retirement of appliances that 

cannot be sufficiently repaired; 

replacement of appliance components 

that have a history of failures; and 

recordkeeping of the determination of 

the full charge and the fate of recovered 

refrigerant. 

This Action 

EPA has received a request to provide 

additional time for public comment on 

the proposed rule. We believe that the 

request is reasonable and that a further 

30 days for additional public comment 

is appropriate, since it will provide 

affected entities with necessary time to 

complete analysis and comment on the 

proposal. This action therefore reopens 

the comment period for 30 days. We 

intend to issue a final rule as 

expeditiously as possible following 

consideration of the comments and 

information we receive. 

Dated: February 16, 2011. 

Gina McCarthy, 

Assistant Administrator, Office of Air and 

Radiation. 

[FR Doc. 2011–3992 Filed 2–22–11; 8:45 am] 

BILLING CODE 6560–50–P 

WReier-Aviles on DSKDVH8Z91PROD with PROPOSALS