DALLAS (AP) – The Environmental Protection Agency says the DFW area has some of the nation’s most polluted air.

EPA says the area on Tuesday will be designated a “serious” violator of federal air quality standards.

The Dallas Morning News reports that Ventura, Calif., is just as bad although five other regions are even worse, including the Houston metro area, which is a “severe” offender.

EPA spokesman David Bary says the Texas Commission on Environmental Quality will be required to develop a new clean-air plan for DFW by July 2012.

David Brymer, the state’s air quality division director, says the new EPA label will probably have little effect on North Texas since a plan to clean the air is already underway because of previous orders by the federal government to do so.

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