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 Department of Health and Human Services Agency for Toxic Substances and Disease Registry [ATSDR-268]
 AGENCY: Agency for Toxic Substances and Disease Registry (ATSDR), Department of Health and Human Services (HHS).
 ACTION: Notice of availability.
 SUMMARY: This notice announces the availability of one new and six updated final toxicological profiles of priority hazardous substances comprising the twenty-first set prepared by ATSDR.
 FOR FURTHER INFORMATION CONTACT: Ms. Olga Dawkins, Division of Toxicology and Environmental Medicine, Agency for Toxic Substances and Disease Registry, Mailstop F-62, 1600 Clifton Road, NE., Atlanta, Georgia 30333, telephone (770) 488-3315. Electronic access to these documents is also available at the ATSDR Web site: 
                        *http://www.atsdr.cdc.gov/​toxprofiles/​index.asp*


SUPPLEMENTARY INFORMATION: The Superfund Amendments and Reauthorization Act of 1986 (SARA) (42 U.S.C. 9601 
                    *et seq.*) amended the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA or Superfund) (42 U.S.C. 9601 
                    *et seq.*) by establishing certain requirements for ATSDR and the U.S. Environmental Protection Agency (EPA) with regard to hazardous substances that are most commonly found at facilities on the CERCLA National Priorities List (NPL). Among these statutory requirements is a mandate for the Administrator of ATSDR to prepare toxicological profiles for each substance included on the priority lists of hazardous substances. These lists identified 275 hazardous substances that ATSDR and EPA determined pose the most significant potential threat to human health. The availability of the revised list of the 275 priority substances was announced in the 
                    **Federal Register**
                     on December 7, 2005 (70 FR 234). For prior versions of the list of substances, 
                    *see***Federal Register**
                     notices dated April 17, 1987 (52 FR 12866); October 20, 1988 (53 FR 41280); October 26, 1989 (54 FR 43619); October 17, 1990 (55 FR 42067); October 17, 1991 (56 FR 52166); October 28, 1992 (57 FR 48801); February 28, 1994 (59 FR 9486); April 29, 1996 (61 FR 18744; November 17, 1997 (62 FR 61332); October 21, 1999 (64 FR 56792); October 25, 2001 (66 FR 54014) and November 7, 2003 (68 FR 63098). Notice of the availability of drafts toxicological profiles for public review and comment was published in the 
                    **Federal Register**
                     on October 23rd, 2007, (72 FR 60020), with notice of a 90-day public comment period for each profile, starting from the actual release date. Following the close of the comment period, chemical-specific comments were addressed, and, where appropriate, changes were incorporated into each profile. The public comments and other data submitted in response to the 
                    **Federal Register**
                     notices bear the docket control number ATSDR-236. This material is available for public inspection at the Division of Toxicology and Environmental Medicine, Agency for Toxic Substances and Disease Registry, 4700 Buford Highway, Building 106, Second Floor, Chamblee, Georgia 30341 between 8 a.m. and 4:30 p.m., Monday through Friday, except legal holidays. Availability This notice announces the availability of one new and six updated final toxicological profiles of priority hazardous substances comprising the twenty-first set prepared by ATSDR. The following toxicological profiles are now available through the U.S. Department of Commerce, National Technical Information Service (NTIS), 5285 Port Royal Road, Springfield, Virginia 22161, telephone 1-800-553-6847. There is a charge for these profiles as determined by NTIS. Twenty-first Set
Toxicological profile
NTIS order No.
CAS No.1. Boron (Update)
PB2010-100001
7440-42-82. Chlorine
PB2010-100002
7782-50-53. Ethylbenzene (Update)
PB2010-100004
100-41-44. Ethylene Glycol (Update)
PB2010-100005
107-21-15. Plutonium (Update)
PB2010-100006
7440-07-56. Styrene (Update)
PB2010-100007
100-42-5
 Dated: November 23, 2010. Ken Rose, Director, Office of Policy, Planning and Evaluation, National Center for Environmental Health/Agency for Toxic Substances and Disease Registry.


[FR Doc. 2010-30009 Filed 11-29-10; 8:45 am] BILLING CODE 4163-70-P