Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Obama to Evaluate Oil Spill in Gulf of Mexico VOA News 02 May 2010 A dead sea turtle is seen along the shoreline in Breton National Wildlife Refuge, Louisiana, 1 May 2010 Photo: AP A dead sea turtle is seen along the shoreline in Breton National Wildlife Refuge, Louisiana, 1 May 2010. Wildlife in the region is vulnerable to the looming oil spill from last week's collapse and spill of the Deepwater Horizon oil rig. U.S. President Barack Obama is heading to the state of Louisiana to inspect damage and evaluate the threat from the large oil spill spreading from an undersea well. Officials say they are concerned about an environmental catastrophe in the Gulf of Mexico, where the oil slick has tripled in size in recent days. Speaking in televised interviews Sunday, U.S. Interior Secretary Ken Salazar said it could be 90 days before a "relief well" is completed to stop the flow of oil into the water. However, the chairman of British Petroleum, the company that owns the leaking well, told ABC News a system to contain the leak could be deployed in six to eight days. Â Lamar McKay said the system, which he called a containment dome, is in the final engineering phase. An April 20 oil rig explosion killed 11 workers and triggered leaks from the sea floor well-head, estimated at 800,000 liters of crude oil per day. Salazar said every effort is being made to stop the oil source, and federal officials are doing all they can to protect the U.S. coastline. But the interior secretary said the accident could potentially cause more damage than the 39-million liter oil spill from the Exxon Valdez tanker ship in Alaska in 1989. President Obama left Washington aboard Air Force One Sunday, heading for the Gulf Coast. The U.S. Coast Guard said Saturday high seas in the Gulf of Mexico have frustrated efforts to contain the spreading oil, and strong winds are blowing it toward the coast. The Coast Guard's Admiral Thad Allen said the depth of the water makes it almost impossible to know exactly how much oil is spewing from the well. A scientist at the University of Miami said satellite images show the oil slick grew from 2,600 square kilometers to 9,000 square kilometers between April 26 and April 29. President Obama has halted new offshore oil drilling until investigators have determined the cause of the accident. Some information for this report was provided by AP, AFP and Reuters. .