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 of public meetings during calendar year 2015 to obtain public 

input on IRIS assessments. The purpose of the 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 of the 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 of Environmental 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 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 (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 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 .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.