Nearly 75 Percent Of Oil Still Lingering in Gulf Coast, Says Expert

Answering a question from Rep. Edward Merkey, Dr Bill Lehr, Senior Scientist at the National Oceanic and Atmospheric Administration, says that nearly 75% of the 4.1 million barrels that spewed into the Gulf of Mexico remain present in the environment and are subject to natural dispersion. (0:40)

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4.1 Million Barrels Of Crude Officially Spilled Into Gulf, Says Expert

Dr. Bill Lehr, Senior Scientist at the National Oceanic and Atmospheric Administration verifies that, disregarding the 800,000 barrels of oil captured by containment ships, nearly 4.1 million barrels of crude oil spilled into the Gulf of Mexico. (0:15)

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