The Environmental Protection Agency in its non-cancer dioxin assessment states dioxin levels in air emissions have decreased by 90 percent since 1987. The agency on Friday released the assessment, a long promised report on dioxins, a family of chemicals found in the environment worldwide and those that are found in the Tittabawassee and Saginaw rivers. "Dioxins are toxic chemicals that naturally exist in the environment and can be released into the environment through forest fires, backyard burning of trash, certain industrial activities, and residue from past commercial burning of waste. Today’s findings show that generally, over a person’s lifetime, current exposure to dioxins does not pose a significant health risk," the report states.
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