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Class I Area
According to Jacobsen. Shenandoah National Park and the James River Wilderness are the only Class I air quality areas in the state of Virginia. Rappahannock County, he said, falls under the park's class I “umbrella". The designation means that air quality can only get "this much worse” than it was on August 7, 1977, explained Jacobsen, holding his finger and thumb just a hair's breadth apart to indicate the allowance for deterioration in air quality.
The park’s air is protected against three classes of pollutants: total suspended particulars (for instance, soot from burning fossil fuels), sulfur dioxides and nitrogen oxides. Tests on plants have shown that the park's problems center primarily around ozone. Jacobsen said. “Pine trees in the park are being killed by ozone right now,” he reported.
Environmental Protection Agency personnel took air samples this past summer at Overall. Jacobsen said. “General Motors was there, too. They were probably gathering information to fight the controls that are bung under modern' automobiles." he joked.
The park has contracted with VPI and UVa to conduct research on Shenandoah's air quality, the superintendent continued. In addition to trying to connect visibility with pollutants, researchers are trying to determine the regionality of the park's air. The air has been traced as far back as Chicago. Cleveland and Akron. Jacobsen said, and as far south as New Orleans.
“The Great Valley of Virginia is essentially an air conduit...We’ve learned a great deal but we don't have any answers yet on how to make the air sweeter." he said. "But we're working with you." he told the court
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