Mike Robicheux , a Louisiana physician , described the situation as " the biggest public health crisis from a chemical poisoning in the history of this country . " In July , after testing the blood of BP cleanup workers and residents in Louisiana , Mississippi , Alabama , and Florida for volatile organic compounds , environmental scientist Wilma Subra said she was " finding amounts 5 to 10 times in excess of the 95th percentile " ; she said that " the presence of these chemicals in the blood indicates exposure . " Riki Ott , a marine toxicologist with experience of the Exxon Valdez oil spill , advised families to evacuate the Gulf . She said that workers from the Valdez spill had suffered long-term health consequences
Exxon Valdez oil spill
Exxon Valdez oil spill
Deepwater Horizon oil spill