News Update A confluence of rare events batters risk management decisions concerning how short-term or acute exposure to trichloroethylene (TCE) vapors are addressed at thousands of contaminated sites across the country. A perfect storm of an update to the 1987 human health risk assessment for TCE, including controversial short-term limits based on non-cancer inhalation endpoints; highly scrutinized revisions to U.S. EPA's 2002 draft federal vapor intrusion policy; and recent recommendations of major public health and environmental regulatory agencies fuel the controversy with diverging short-term limits for TCE vapors....more West Virginia state agencies have taken enforcement action against Freedom Industries, the chemical distributor involved in a Jan. 9 leak of at least 3,000 gallons of 4-Methylcyclohexane Methanol, known as "Crude MCHM," from one of its storage tanks. The chemical has contaminated the drinking water supply to Charleston, the state capital, and surrounding counties, affecting 300,000 residents who have been told not to drink or use their tap water except for flushing toilets. Water testing continued Sunday, and schools are closed....more The Clark County Commission approved John Entsminger as general manager of the Las Vegas Valley Water District and the Southern Nevada Water Authority, replacing Patricia Mulroy. Entsminger has been senior deputy general manager for both and won approval Jan. 7, both Las Vegas newspapers reported....more |
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