The DuPont Co.'s failure to report widespread exposures to a potentially toxic chemical used to manufacture nonstick pans, stain-resistant carpet and hamburger wrappers will cost the company $16.5 million in fines and compensatory payouts... Still pending is a federal criminal probe of the company's handling of federal requests for information... The company established a $108 million reserve last year to pay settlements in a West Virginia class action lawsuit involving citizen water pollution claims in Ohio and West Virginia. The settlement includes a medical monitoring agreement that could cost the company up to $235 million. [also refers to 3M]