EPA Releases Reports on Dioxin Emitted During Deepwater Horizon BP Spill
"The U.S. Environmental Protection Agency today released two peer reviewed reports concerning dioxins emitted during the controlled burns of oil during the Deepwater Horizon BP spill. Dioxins describe a group of hundreds of potentially cancer-causing chemicals that can be formed during combustion or burning. The reports found that while small amounts of dioxins were created by the burns, the levels that workers and residents would have been exposed to were below EPA’s levels of concern.

Controlled burning of oil on the surface of the ocean (also called in situ burning) was one method used by the Unified Command during the Deepwater Horizon BP oil spill, to reduce the spread of oil and environmental impacts at the shoreline. A total of 411 controlled burn events occurred of which 410 could be quantified, resulting in the combustion of an estimated 222,000 to 313,000 barrels of oil (or 9.3 to 13.1 million gallons).

With support from the U.S. Coast Guard, EPA conducted sampling of emissions at the source of the controlled burns in the Gulf of Mexico to determine if dioxins were present. The sampling was conducted to identify potential dioxin exposures and determine the potential risks from inhalation to workers in the vicinity of the fires, risks from inhalation to the general population and risks to the general population from consuming fish caught in the area..."