About 167,000 of the piston-driven airplanes flown in the U.S. burn leaded aviation fuel, which makes them the largest source of lead emissions in the country, according to this source. In a federal court case in Washington, D.C., Earthjustice attorney Marianne Engleman Lado aims to get the Environmental Protection Agency to crack down. "There are 20,000 airports around the country, including here in New York, where lead is still used, and studies have shown that people who live near these airports -- their kids are more likely to have heightened blood lead levels," said Lado, but the problem is that no alternative currently exists for avgas. The Aircraft Owners and Pilots Association says it's a decision for the Federal Aviation Administration, not the EPA.
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