I think it would, yes.
If you go back 20 years, when we still had leaded and unleaded gasoline, there was a regulatory level for the allowable level of lead in leaded gas. There was a regulatory level, a very low one, for the allowable level of lead in unleaded gas. It was a recognition of environmental contamination. You measure the unleaded gas and see if there's any lead in it. If it's very low, below that level, you know it's fine. If it's above, then the red flag is up and you want to investigate.