Re:Decades of diesel use in Europe have created a public hea...
by plorkyeran on Wednesday October 09, 2019 @05:41PM
(#21208453)
OSHA picking an acceptable limit does not mean that the harm when below that limit is zero, or that harm does not increase as you go higher above that limit. Being exposed to ten times the limit is worse than being exposed to twice the limit.
If you're above the acceptable limit, and you don't reduce exposure to below that limit, then there's no benefit.