[CPEO-BIF] TCE Assessment Finalized

[Lenny Siegel <LSiegel@cpeo.org>]

Please excuse duplicate postings.

U.S. EPA has just released the final Integrated Risk Information  
System (IRIS) Assessment for trichloroethylene. The Assessment is  
available on line at http://www.epa.gov/ncea/iris/subst/0199.htm. It  
establishes for the first time official risk values for both cancer  
and non-cancer risk for both oral and inhalation exposures.

TCE is one of the most common contaminants at federal and civilian  
Superfund and other hazardous waste sites. I believe the new  
Assessment will lead directly to more protective exposure standards  
for vapor intrusion, and it is also likely to cause the re-evaluation  
and possibly lowering of the drinking water standard for TCE, often  
used as a remedial action objective for groundwater cleanup. As Joe  
Biden would say, this is a big deal!

For a little history on the development of the TCE IRIS Assessment,  
see http://switchboard.nrdc.org/blogs/jsass/epa_finalizes_long- 
delayed_tce.html

Monday night I posted a letter, signed by activists across the  
country, asking that the Assessment be immediately released.


Lenny

--

Lenny Siegel
Executive Director, Center for Public Environmental Oversight
a project of the Pacific Studies Center
278-A Hope St., Mountain View, CA 94041
Voice: 650/961-8918 or 650/969-1545
Fax: 650/961-8918
<lsiegel@cpeo.org>
http://www.cpeo.org

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