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In this Jan. 27, 2005 file photo rubber mats cover the ground of the playground at Gail Corvello's daycare center, so children won't be exposed to contaminated soil, Thursday, Jan. 27, 2005, in Tiverton, R.I. A routine sewer project led to the discovery of high levels of arsenic, cyanide, lead and suspected carcinogens in the neighborhood's soil. Lawyers for dozens of residents of the polluted Rhode Island neighborhood said Wednesday, April 23, 2008, that an energy company has agreed to pay their clients and clean up the area where toxins turned the soil blue.(AP Photo/Stew Milne, File)
