Children living close to the airport serving leaded avgas were found to have a small but tangible increase in blood lead levels. General aviation itself has bee

Children living close to the airport serving leaded avgas were found to have a small but tangible increase in blood lead levels. General aviation itself has been on the decline for the past few decades and alternative fuel seems to be finally getting approved at last, so the problem seems to be a well managed one. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3230438/ http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3230438/