|
Ê
|
|
Dioxin and Related Compounds
 |
|
 |
 |
| 2,3,7,8-Tetrachlorodibenzo-p-dioxin |
2,3,7,8-Tetrachlorodibenzofuran |
3,3',4,4',5,5'-Hexachlorobiphenyl |
|
|
|
Dioxin:ÊÊFrequently Asked Questions (FAQs)
|
|
|
These FAQs provide
information about dioxins. Topic areas include: general information,
overview of the EPA dioxin report, food safety, and risk assessment.
They were prepared by the Interagency Working Group on Dioxin.
|
|
|
|
|
Dioxin Reassessment (Draft Documents, September 2000)
|
|
|
NOTICE:ÊÊTHESE DOCUMENTS ARE PRELIMINARY
DRAFTS. They have not been formally released by the U.S. Environmental
Protection Agency and should not at this stage be construed
to represent Agency policy or factual conclusions. These documents
are being provided now for review to EPA's Science Advisory
Board.ÊÊThey should not be cited or referred to as
EPA's final assessment of dioxin risks. |
|
|
|
|
The EPA Dioxin
Reassessment effort began in 1991, when EPA announced that it
would conduct a scientific reassessment of the health risks
resulting from exposure to 2,3,7,8-tetrachlorodibenzo-p-dioxin
(TCDD) and chemically similar compounds collectively known as
dioxin. The process for developing the Dioxin Reassessment has
been open and participatory. Each portion of the reassessment
has been developed in collaboration with scientists from inside
and outside the Federal Government. In September, 1994, EPA
released the public review draft of the Dioxin Reassessment
Documents which included three major reports: Estimating Exposure
to Dioxin-Like Compounds, Health Assessment Document for 2,3,7,8-Tetrachlorodibenzo-p-dioxin
(TCDD) and Related Compounds, and Risk Characterization of 2,3,7,8-Tetrachlorodibenzo-p-dioxin
(TCDD) and Related Compounds. The September 1994 release of
the draft Dioxin Reassessment Documents was followed by a 150-day
comment period and 11 public meetings around the country to
receive oral and written comments. In addition to this public
review each document was reviewed by EPA's Science Advisory
Board (SAB). In response to the SAB, public comments, and newly
available scientific information EPA has been working to revise
and updated the 1994 draft and is committed to completing and
releasing a final dioxin reassessment early in calendar year
2001. Information on the current status of development of the
dioxin reassessment and access to the current working drafts
of selected portions of the reassessment is available here.
|
|
|
|
|
Dioxin
Exposure Initiative (DEI) |
|
|
|
|
In 1994, the
EPA embarked upon a research program to further evaluate the
exposure of Americans to this class of compounds. This program
is called, The Dioxin Exposure Initiative, abbreviated the DEI.
The DEI is a research program jointly funded and managed by
the Office of Research and Development and the Office of Prevention,
Pesticides, and Toxic Substances. Further information on the
DEI is available here. |
|
|
|
|
Database
of Sources of Environmental Releases of Dioxin-like Compounds
in the United StatesÊ(EPA/600/C-01/012, March,
2001) |
|
|
|
|
The purpose
of this database is to document congener-specific emissions
and environmental releases of polychlorinated dibenzo-para-dioxins
(CDDs) and polychlorinated dibenzofurans (CDFs) from known source
activities in the U.S. Included within the database are facility-specific
emissions for a variety of CDD/CDF sources, and congener-specific
I-TEQ and WHODF-TEQ emission factors. The database contains
information that can be used to track CDD/CDF emissions over
time; develop and compare congener-specific and homologue profiles
for source categories; and to develop congener-specific emission
factors that can then be used to undertake an emissions inventory
of sources. The database is associated with two reference years:
1995 and 1987.
|
|
|
|
|
EPA
Analytical Methods |
|
|
|
|
The published
EPA analytical method for analysis of dioxin and related compounds
is Method 1613. Information on how to obtain copies of the EPA
analytical methods for dioxins and other contaminants is available
here. |
|
|
|
|
EPA
Regulations |
|
|
|
|
Information
on EPA regulations and related activities is available here.
|
|
|
|
Ê
|
