2010 CPEO Military List Archive

From: Lenny Siegel <lennysiegel@gmail.com>
Date: Fri, 8 Oct 2010 01:58:52 -0700 (PDT)
Reply: cpeo-military
Subject: [CPEO-MEF] CHROMIUM: EPA Toxicological Assessment
On September 30, U.S. EPA published a draft toxicological review for hexavalent chromium and announced a 60-day public comment period. The review concluded:

"hexavalent chromium is 'likely to be carcinogenic to humans' via the oral route of exposure based on a statistically significant increase in the incidence of tumors of the oral mucosa and tongue of rats and of the small intestine of mice, and evidence of an association between oral exposure to hexavalent chromium and stomach cancer in humans. Additionally, available evidence indicates that chromium interacts with DNA, resulting in DNA damage and mutagenesis. Based on the weight of the available evidence, hexavalent chromium is proposed to act through a mutagenic mode of carcinogenic action ..."

For the Federal Register announcement, go to

To download the toxicological review and related material, go to



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

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