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levels only four times during the entire summer. This year we’ve already received high ozone pollution on eight separate days since late April,” said Rolf Gubler, the Park’s monitoring specialist. Shenandoah visitors can see 30 miles or more.
“These high ozone and poor visibility conditions were regionwide last weekend; it’s not just the Park that is experiencing this problem,” Thomas said. For example, the Virginia Department of Environmental Quality issued an ozone alert in Richmond on June 25; ozone levels were at 108 ppb in the early afternoon.
Visibility is often reduced in the summer because of heat, humidity and pollutants. Visitors touring the Park in late fall, winter and early spring seasons have a better chance of taking the panoramic view for long distances. “Clear days give us encouragement that with public action we can improve our visibility all year,” she said.
Thomas said that visitors can help control and lower pollution levels by turing off vehicle engines, reducing the use of air conditioning units, and properly inflating tires to increase fuel efficiency. “We can all help by conserving energy in the home and workplace so new’ pollution-producing power plants are not needed,” Thomas said.
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