The finding zeroes in on leaded aviation fuel used primarily in small piston-engine aircraft, where the metal provides octane critical for performance.
A worker fills a Cessna 172 with 100 low lead aviation gas at Long Beach Airport in Long Beach, CA, on Monday, September 12, 2022. Small planes are the largest source of airborne lead emissions in the United States. The Biden administration on Wednesday declared emissions from airplanes running on leaded aviation fuel a threat to public health — a first step toward stamping out a major source of metal pollution linked to developmental delays, kidney disease and other health concerns.
The EPA finding doesn’t itself ban or restrict the use, sale or availability of leaded aviation fuel. However, it does trigger a legal obligation under the Clean Air Act to propose standards addressing lead emissions from the affected aircraft engines. And the Federal Aviation Administration can move separately to impose requirements addressing fuels and additives that can limit lead emissions.
Any new standards could have an outsize effect in Alaska, Colorado, Florida and other states where piston-engine aircraft are more prevalent.California poised for big climate moves after Newsom backs new laws There is no known safe amount of lead exposure, with just a small amount in blood tied to impaired cognitive ability, putting children at particular risk.
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