[CPEO-MEF] VOCs, DIOXANE: Tucson (AZ) treatment plant

[Lenny Siegel <lsiegel@cpeo.org>]

New plant to remove carcinogen from water
1,4-dioxane remains on south side despite city's cleanup of TCE, TCA

Tony Davis
Arizona Daily Star
July 7, 2011

Tucson hopes to start construction next year on a $10 million plant  
to clean up another cancer-causing chemical from south-side  
groundwater, more than 15 years after authorities began cleanup of  
TCE and TCA from that aquifer.

This time authorities are targeting 1,4-dioxane, which has not been  
removed from the groundwater as the other solvents were being cleaned  
up.

Treated water containing low amounts of that carcinogen has been  
delivered for years to homes and businesses in a wide area of Tucson  
(see map, Page A4). Federal officials say the health risk from  
drinking that water is "exceedingly low," but the compound is  
significantly more toxic than previously believed.

City officials hope to get reimbursed for money needed to build and  
to operate the plant - pegged at another $250,000 annually - by the  
Air Force. It was Air Force contractors who dumped the polluting  
solvents into the groundwater starting more than a half-century ago.


...

For the entire article, see
http://azstarnet.com/news/science/environment/article_9a717419- 
f32e-547e-af31-10924cec2b26.html

--

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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