4 ms·
They said "higher than healthy" not "higher than when everyone's car ran on it"
by wlesieutre 4y ago
They said "higher than healthy" not "higher than when everyone's car ran on it"
- AnimalMuppet 4y agoOK, but there's still the same question. What is the "healthy" ppb level of lead in air, and what is the concentration from avgas? Also, here's a plane flying at 4000 AGL. How much of the lead it puts out is going to affect the lead level at ground level? (I mean, it can raise the ppb of the entire atmosphere, which eventually affects everyone, but that's a huge mass to affect.) It might matter for those living downwind and close to heavily-used private plane fields, though.