The agency submitted its recommendation to the Environmental Protection Agency on Friday. The EPA could make a final decision later this year. The DEQ made the recommendation because the valley has exceeded the federal ozone standard for the past three years. Under federal rules, an area that has high ozone readings must be listed as non-attainment until it take steps to reduce ozone levels. Exceeding the ozone standard means the level of ozone in the air is more than 85 parts per billion in an eight-hour period.
Ozone is caused by chemicals released from cars, industries and household products.
These chemicals react with sunlight and form ozone, an odorless gas that can cause respiratory and heart problems. Having a non-attainment designation could affect future transportation projects like the proposed Interstate 73 and industrial development, state officials said. He said any new industries moving into the area would have to have their permits reviewed as well, to ensure that they don't increase ozone levels. The Roanoke Valley might also be required to have vehicle emissions testing stations, similar to areas in Northern Virginia, to make sure that emissions equipment in cars and other vehicles is operating properly.