Licorice Scent Of MCHM Lingers In WV, Along With General Ignorance On All Sides Re. Toxicity, Risks
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The most significant new information in the reports was a finding that humans can detect -- but not clearly identify -- the smell of Crude MCHM at concentrations as low as 0.15 parts per billion. State officials previously had thought the odor threshold was about 1.0 part per billion.
Under the WVTAP's new odor threshold, humans could smell MCHM at levels far below the controversial 1.0 part-per-million health "screening level" put together by the U.S. Centers for Disease Control and Prevention. One part per million equals 1,000 parts per billion.
However, a team of WVTAP experts has yet to meet to begin a separate review of how the CDC developed that health-screening number, and the CDC's work has been strongly criticized by independent public-health experts.
Craig Adams, a Utah State University environmental engineer working with WVTAP, said his literature review published Monday revealed far less data about MCHM's potential health effects than would normally be needed to set an official drinking-water standard for the chemical. "There is certainly much, much less [data] than for a compound for which they're making a regulatory determination," Adams said during a conference call Tuesday with members of the news media and some environmental-activist groups.
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http://www.wvgazette.com/News/201403180106
