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Updated Jan 16, 2014 - 12:07 pm

EPA set to approve Maricopa County dust plan

PHOENIX — Federal environmental regulators are poised to approve an air quality plan that has demonstrated Maricopa County meeting federal health
standards for dust levels.

The Environmental Protection Agency announced Wednesday that it would approve
the county’s Five Percent Plan.

The plan, which was submitted to the EPA in 2012 with revisions, sought to
reduce dust emissions of at least 5 percent each year between 2007 and 2013.

Officials in Phoenix and surrounding cities said they have been implementing
aggressive dust control policies.

Maricopa County air quality officials said the county had failed to meet federal
standards for dust since the Clean Air Act was amended in 1970.

The EPA said dust is a public health concern because particulate matter affects
the respiratory system.

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