|From:||Lenny Siegel <firstname.lastname@example.org>|
|Date:||14 Nov 2004 16:35:36 -0000|
|Subject:||[CPEO-MEF] Twin Cities perchlorate sampling|
Submitted by Christine Ziebold <email@example.com>|
The Minnesota Pollution Control Agency staff has shared results for perchlorate and chlorate analysis at Twin Cities Army Ammunition Plant (TCAAP). A total of eleven samples were taken on 6/24/04 and 7/2/04, analyzed by STL in Denver, CO and chlorate analyzed by STL in Savannah, GA.
All chlorate sample results were at non-detect. Six perchlorate sampling results were non-detect. However four perchlorate sample results showed low concentrations below the reporting limit .2 ug/l. One perchlorate sample result was at the reporting limit. The four samples with very low concentrations of perchlorate are downgradient of the so called "135 Primer Tracer Area (PTA).
Encouraged by my inquiry into the matter (ATSDR petition) MPCA had sampled for perchlorate on December 19 and 20, 2003 and March 19, 2004- not Army-. Since no chlorate or perchlorate samples exceeded the lab reporting limit, MPCA says it will not be doing additional sampling at these locations. Instead, MPCA and EPA recommend that Army follow up with additional upgradient sampling.
This recommendation comes at a time that land transfer is in full swing. It is questionable that the Army follows up with a recommendation it didn't offer to follow up with in the first place. I doubt the finding even registers on the city level, which is concerned with a myriad of legalistic issues.
Christine Ziebold MD PhD MPH TCAAP Restoration Advisory Board Minneapolis
-- 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 http://www.cpeo.org
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