OSHA PLANS TO CUT BUTADIENE EXPOSURE LIMIT

The U.S. Occupational Safety and Health Administration has proposed a sharply lower exposure limit for butadiene. The agency's permissible exposure limit would drop from 1,000 ppm in air to 2 ppm as an 8 hr time weighted average. OSHA also proposed a short term exposure limit of 10 ppm for 15 min. U.S. companies produced 3 billion lb of butadiene in 1989. It has been linked to various types of cancer in animals. The proposal would cover nearly 100 plants, more than half of which produce

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