Wayne Barfield moved to the outer edge of Summerville to get away from the city. But every working day the respiratory therapist finds himself breathing some of the worst air pollution in the Lowcountry: Sitting in rush hour traffic.
The three counties around Charleston are on the verge of violating federal Clean Air standards for ozone, the greenhouse gas emitted by carbon fuel engines. If they violate the standard, vehicles could be forced to undergo emission inspections and road building could be restricted.
Just how much pollution vehicles cause isn't specifically tracked by health agencies. An estimate compiled by The Post and Courier suggests it may be more than people realize. More than a half million vehicles are registered in the three counties around Charleston; on an average day, about 140,000 vehicles travel the congested I-26 stretch alone.
Vehicle exhaust is main pollution threat
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Vehicle exhaust main pollution threat...
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