UNITED STATES ENVIRONMENTAL PROTECTION AGENCY 

NATIONAL CENTER FOR ENVIRONMENTAL ASSESSMENT 

WASHINGTON, DC 20460 

I r. 3 D ZD16 

OFFICE OF 

RESEARCH AND DEVELOPMENT 

MEMORANDUM 

SUBJECT: 

FROM: 

Thru: 

Posting EPA-HQ-ORD-2013-01 11 to Regulations.gov for Public Access 

Vicki Soto 

National Center for Environmental Assessment 

IRIS Division 

Gina 

Deputy 

Perovich 

Director, 

~~ IRIS Division 

Office of Research and Development 

National Center for Environmental Assessment 

This memorandum authorizes the opening of EPA-HQ-ORD-2013-0111 to 

Regulations.gov for public access from April 1, 2016 to December 31, 2016. 

EPA is actively working on the IRIS assessment oftert-butanol. During 2016 materials 

related to the tert-butanol assessment may be discussed at an IRIS public science meeting 

or other public meetings related to the IRIS assessment. As part of an effort to increase 

the opportunity for public input, this docket will be used to accept public comments 

related to the IRIS assessment of tert-butanol. 

Comments on the IRIS assessment oftert-butanol should be submitted to Docket ID No. 

EPA-HQ-ORD-2013 -0111 by one of the following methods: 

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

comments. 

• E-mail : Docket ORD@epa.gov. 

• Fax: 202-566-9744. 

• Mail : U.S. Environmental Protection Agency, EPA Docket Center, (ORD 

Docket), Mail Code: 28221 T, 1200 Pennsylvania Avenue, N.W., Washington, DC 

20460. 

• Hand Delivery: The ORD Docket is located in the EPA Headquarters Docket 

Center, EPA West Building, Room 3334, 1301 Constitution Avenue, N.W., 

Washington, DC 20004. 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://www2.epa.gov/dockets. 

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

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