[CPEO-BIF] (no subject)

[Lenny Siegel <lsiegel@cpeo.org>]

Topock cleanup outlined

By JENNIFER DENEVAN
Mohave Daily News (CA)
May 28, 2015

NEEDLES - A recent meeting on the subsequent environmental impact  
report related to the groundwater cleanup project at the Topock  
Compressor Station didn’t garner much public input, but there are  
still opportunities to submit comments.

...

The cleanup project stems from Pacific Gas and Electric’s use of  
hexavalent chromium as a means of protecting equipment while cooling  
compressed gas. The discarded chromium seeped into groundwater,  
creating an underground plume.

PG&E self-reported the need to clean up the plume and has since  
worked with the lead agency, DTSC, to determine a remedy. The company  
chose to use ethanol that helps create a natural filtering system in  
which a bacteria occurs. That bacteria creates an anaerobic zone that  
changes the hexavalent chromium to trivalent chromium, a nontoxic,  
insoluable form of chromium.

...

New information included finding out PG&E will be using Arizona water  
that has slightly higher levels of arsenic than is allowed in  
California, Yue said. The DTSC will evaluate the use of that water.

...

For the entire article, see
http://www.mohavedailynews.com/news/topock-cleanup-outlined/ 
article_4b693e4c-050c-11e5-930c-57074e396eaa.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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