Did the Ozone Action Program help reduce air pollution last year?
State air quality officials believe the Ozone Action Program was a factor in limiting ozone levels in Charlotte and Winston-Salem last summer. Ozone levels in Winston-Salem stayed below the federal standard in 1997, despite exceedances at monitoring stations in other parts of the state. Charlotte was on the verge of violating federal clean air standards entering the 1997 ozone season and would be in “non-attainment” if ozone levels had topped the old federal standard of 0.12 parts per million (ppm) on any day at either of two monitoring stations in the metropolitan area. Ozone levels came within 1 part per billion of exceeding the standard in the Charlotte area in 1997, and air quality officials believe the Ozone Action Program may have made the difference in staying in compliance. Surveys conducted before and after the 1997 “ozone season” showed the program had a measurable impact on public awareness about air pollution, especially in Charlotte. For example, the percentage of people w
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