From April to mid-July 2010, 411 controlled in-situ fires remediated approximately 265,000 bbl (11.1 million US gal; 42,100 m3).[116] The fires released small amounts of toxins, including cancer-causing dioxins. According to EPA's report, the released amount is not enough to pose an added cancer risk to workers and coastal residents, while a second research team concluded that there was only a small added risk.[154]