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

## DEC 11**201~** 

### MEMORANDUM SUBJECT: FROM: Thru: Posting EPA-HQ-ORD-20 Joe DeSantis ORD/NCEA/IRIS Divisi Vince Cogliano Director, IRIS Division Otlice of Research and Development National Center for Environmental Assessment OFFICE OF RESEARCH AND DEVELOPMENT

This memorandum authorizes the extension ofEPA-HQ-ORD-2013 -0783, IRIS Assessment Materials for 1-lexabromocyclododecane (HBCD), to Regulations .gov for public access from January I, 2015 to October 3 I, 2015. EPA will hold a series ofpublic meetings during calendar year 2015 to obtain public input on IRIS assessments . The purpose ofthe public meetings is to allow all interested parties to present scientitic and technical comments on problem formulation and preliminary materials, and on draft IRIS health assessments , to EPA and other interested parties attending the meeting. These materials are made available on the IRIS website at http ://www .epa.gov/iris/publicmeeting/ approximately 2 months before each public meeting. Comments on assessment materials and dratl assessments should be submitted to the appropriate docket as indicated below. In addition, information and meeting materials that interested parties are scheduled to discuss at an IRIS bimonthly public meeting on HBCD should be submitted to this docket before the public meeting. Submit your comments and meeting materials related to IRIS Assessment Materials for 1-lexabromocyclododecane (HBCD) identified by Docket ID No. EPA-HQ-ORD-20 I 3- 0783 by one ofthe following methods : • www.regulations.gov: Follow the on-line instructions for submitting comments. • Email: Docket ORD @.epa.gov. • Fax: 202-566-9744

Internet Address (URL) • http://www.epa .gov Recycled/Recyclable •Printed with Vegetable 011 Based Inks on 100% Postconsumer, Process Chlorine Free Recycled Paper• Mail: Office ofEnvironmental Information (OEI) Docket, U.S. Environmental Protection Agency, Mail code 28221 T, 1200 Pennsylvania Ave, NW, Washington, DC 20460. • Hand Delivery: The OEI Docket is located in the EPA Headquarters Docket Center, EPA West Building, Room 3334, 1301 Constitution Ave, NW., Washington DC. The EPA Docket Center's Public Reading Room is open from 8:30a.m. to 4:30p.m., Monday through Friday, excluding legal holidays. The telephone number for the Public Reading Room is 202-566-1744 . 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 (CBl) 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. Ifyou 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. 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 ofspecial 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 ://www.cpa.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.