In August 2010, the Texas Attorney General charged BP with illegally emitting harmful air pollutants from its Texas City refinery for more than a month. BP has admitted that malfunctioning equipment led to the release of over 530,000 pounds (240,000 kg) of chemicals into the air of Texas City and surrounding areas from 6 April to 16 May 2010. The leak included 17,000 pounds (7,700 kg) of benzene, 37,000 pounds (17,000 kg) of nitrogen oxides, and 186,000 pounds (84,000 kg) of carbon monoxide.