[CPEO-MEF] Spring Valley (DC) perchlorate

[Lenny Siegel <lsiegel@cpeo.org>]

NEWS RELEASE
U.S. Army Corps of Engineers
U.S. Environmental Protection Agency
DC Department of Health

February 15, 2006
Release No. SVJ-021506


Spring Valley partners release additional groundwater sampling results
3 of 6 results show elevated perchlorate; further evaluation planned

WASHINGTON - Analytical results for three of the groundwater samples
collected in December from six recently-installed monitoring wells show
elevated levels of perchlorate in the groundwater in two areas of the
Spring Valley Formerly Used Defense Site.  Preliminary results from
these six wells are being released jointly today by the U.S. Army Corps
of Engineers, the Environmental Protection Agency and the D.C.
Department of Health.  These new monitoring wells supplement the first
round of sampling reported in October from the 23 monitoring wells
installed last summer.

Spring Valley was the site of U.S. Army chemical weapons development and
testing during World War I.  A groundwater study is part of the ongoing
investigation and cleanup of the site.

The highest perchlorate concentration detected in the new monitoring
wells, 70 parts per billion (ppb), was found in groundwater from a
monitoring well located in the 4800 block of Glenbrook Road, on the
southeastern portion of the Spring Valley project area.  Groundwater
from an adjacent monitoring well in the same block returned a
perchlorate concentration of 60 ppb.  These two monitoring wells were
installed just to the west of three World War I-era ordnance and
laboratory glassware disposal pits.  Two of these pits have been
removed.  The third has been partially removed, and is scheduled to be
completed in 2007.  Perchlorate was also detected at a level of 48 ppb
in a third new monitoring well located at the intersection of Loughboro
Road and MacArthur Boulevard, about 1,000 feet south of the Dalecarlia
Reservoir.  A sampling point located about 400 feet to the east of this
monitoring well was tested in the August sampling round, and indicated a
perchlorate level of 24 ppb.

To download the entire press release, go to
http://www.nab.usace.army.mil/projects/WashingtonDC/springvalley/NewsRelease/SVJ-021506.pdf



-- 


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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