UNITED STATES ENVIRONMENTAL PROTECTION AGENCY NATIONAL CENTER FOR ENVIRONMENTAL ASSESSMENT WASHINGTON, DC 20460 

### I**r.** 

### 3D ZD1 6 OFFICE OF RESEARCH AND DEVELOPMENT MEMORANDUM SUBJECT: FROM:



### Thru: Posting EPA-HQ-ORD-2013-01 1 1 to Regulations.gov for Public Access Vicki Soto National Center for Environmental Assessment IRIS Division Gina Perovich

# ~~ Deputy Director, IRIS Division Office of Research and Development National Center for Environmental Assessment This memorandum authorizes the opening ofEPA-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 ofan effort to increase the opportunity for public input, this docket will be used to accept public comments related to the IRIS assessment oftert-butanol. Comments on the IRIS assessment oftert

-butanol should be submitted to Docket ID No . EPA

-HQ-ORD-2013

-0111 by one ofthe 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 ofoperation, and special arrangements should be made for deliveries ofboxed 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 ofyour 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 ofthe comment that is placed in the public docket and made available on the Internet. Ifyou submit an electronic comment, EPA recommends that you include your name and other contact information in the body ofyour comment and with any disk or CD-ROM you submit. IfEPA 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 ofencryption, and be free ofany 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.