Frederick News-Post: Wind-borne pollution

Up to 70 percent of Maryland’s air pollution is from smog generated by coal-burning power plants, vehicles and industries carried on westerly winds from the Ohio River Valley along the I-95 corridor. No matter what the Old Line State does to clean up its homegrown air contamination, this blowback means Maryland will continue to violate federal standards for ground-level ozone pollution set by the Environmental Protection Agency.

And that’s despite any measures taken by the state, such as the Maryland Healthy Air Act and Maryland Clean Cars Program. While a 2012 study showed the state’s air quality has improved, recent measures of smog are at levels that already contravene those federal requirements, according to the Maryland Department of the Environment.

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