According to Wikpedia,
Lead is a poisonous metal that can damage nervous connections (especially in young children) and cause blood and brain disorders. Long term exposure to lead or its salts (especially soluble salts or the strong oxidant PbO2) can cause nephropathy, and colic-like abdominal pains. The historical use of lead acetate (also known as sugar of lead) by the Roman Empire as a sweetener for wine is considered by some to be the cause of the dementia which affected many of the Roman Emperors. At one point in time, some lead compounds, because of their sweetness, were used by candy makers. Although this has been banned in industrialized nations, there was a 2004 scandal involving lead-laced Mexican candy being eaten by children in California.We have created tons of laws and rules to reduce the amount of lead in our environment, to remove lead from paint and gas, to educate the public on the dangerous of lead in the body......we even worked to remove it from the air. And this measures appear to have worked.
The concern about lead's role in mental retardation in children has brought about widespread reduction in its use (lead exposure has been linked to schizophrenia). Lead-white paint has been withdrawn from sale in industralised countries. The yellow lead chromate is still in use; for example, Holland Colours Holcolan Yellow. Many older houses may still contain substantial lead in their old paint; it is generally recommended that old paint should not be stripped by sanding, as this generates inhalable dust.
So can someone tell me why we would remove lead from the Regulated Pollutant List (as it applies to the Clean Air Act)?
Perhaps I am just missing something.
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