UNITED STATES ENVIRONMENTAL PROTECTION AGENCY 

NATIONAL VEHICLE AND FUEL EMISSIONS LABORATORY 

2565 PLYMOUTH ROAD 

ANN ARBOR, MICHIGAN 48105-2498 

MEMORANDUM 

OFFICE OF 

AIR AND RADIATION 

SUBJECT: Posting EPA-HQ-OAR-2011-0135 to Regulations.gov for Public Access 

FROM: 

THRU: 

DATE: 

Christine Brunner LL~/J~ Assessment and Standards Division 

Office ofTransportation and Air Quality 

Kathryn Sargeant r--LL Jl.t \J~ //\ _ ~ o.dActing Deputy Di~ \i U · V\ CJ- Assessment and Standards Division 

Office ofTransportation and Air Quality 

April18, 2013 

This memorandum authorizes the posting ofEPA-HQ-OAR-2011 -0135 to 

Regulations.gov for public access and comment on Monday, April 15, 2013. The 

comment period ends on June 13,2013. Comments received prior to April 15, 2013, 

shall be considered "on time" and shall be included in this docket. 

We are soliciting public comment on the proposed rulemaking "Control of Air Pollution 

From New Motor Vehicles: Tier 3 Motor Vehicle Emission and Fuel Standards," also 

commonly referred to as "Tier 3'" and "the Tier 3 rule." Though the proposed rule is not 

yet published in the Federal Register, we are holding two public hearings on the 

rulemaking which will likely occur before publication. We want to make the contents of 

the docket available to the public prior to the hearings. 

Submit your comments, identified by Docket ID No. EPA-HQ-OAR-2011-0135, by one 

of the following methods: 

• www.regulations.gov: Follow the on-line instructions for submitting 

comments. 

• Email: A-and-R-Docket@epamail.epa.gov. 

• Mail: Air and Radiation Docket and Information Center, Environmental 

Protection Agency, Mailcode 28221 T, 1200 Pennsylvania Ave., NW, 

lntemet Address (URL) • http:/lwww.epa.gov 

Recycled/Recyclable • Printed with Vegetable Oil Based Inks on 100% Postconsumer. Process Chlorine Free Recycled Paper 
Washington, DC 20460. In addition, please mail a copy of your 

comments on the information qollection provisions to the Office of 

Information and Regulatory Affairs, Office of Management and Budget 

(OMB), Attn: Desk Officer for EPA, 725 17th St., NW, Washington, DC 

20503. 

• Hand Delivery: EPA Docket Center, EPA West Building, Room 3334, 

1301 Constitution Ave., NW, Washington, DC 20460. Such deliveries are 

only accepted during the Docket's normal hours of operation, and special 

arrangements should be made for deliveries of boxed information. 

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, avoid any form of encryption, 

and be free of any defects or viruses. For additional information about EPA's public 

docket, visit the EPA Docket Center homepage at 

http://www.epa.gov/epahome/dockets.htm. 

Should you have any questions regarding this memorandum, please contact Eric Shultz at 

(202) 566-1883, or via email at schultz.eric@.epa.gov.