Perchlorate in San Martin

[Lenny Siegel <lsiegel@cpeo.org>]

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Chemical in Shallow Aquifer

Carol Holzgrafe
Morgan Hill Times
June 15, 2004

Seventeen months after South Valley residents discovered that
perchlorate was contaminating their drinking water supply, a picture of
the situation underground and possible cleanup methods have been announced.

And, in another move forward in the perchlorate fight, Sylvia Hamilton,
Perchlorate Community Advisory Group chairwoman, said she has been asked
to testify on June 23, before a House committee reviewing a bill
introduced by Rep. Richard Pombo, R-Tracy, asking for $25 million to
help pay for the effort.

Rick McClure, Olin Corp. project manager for the local cleanup, said
Friday at a meeting of the (PCAG) and two-dozen residents that Olin?s
consultants from Mactec had mapped the underground aquifer and found
perchlorate in mostly shallow areas, about 100-feet deep, leaving open
the possibility of drilling for clean water in deeper wells.

The Central Coast Regional Water Quality Control Board, the lead agency
in the South Valley cleanup effort, required Olin to produce the map and
a plan for water replacement.

Michael Burns, a geologist for Mactec, told PCAG the affected water does
not appear to be moving down - in a vertical direction - largely because
of deposits of clay, material that does not easily allow filtering
through, acting instead as a protective barrier.

...

for the entire article, see
http://morganhilltimes.com/news/newsview.asp?c=111538


-- 


Lenny Siegel
Director, Center for Public Environmental Oversight
c/o PSC, 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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