It looks like California is relatively clean on this scale, but what about the Superfund sites? I feel like those are gray areas that get much less attention th

It looks like California is relatively clean on this scale, but what about the Superfund sites? I feel like those are gray areas that get much less attention than I would expect. With former semiconductor fab sites and former military sites getting increasingly developed with sometimes only a few feet of topsoil removed for cleanup (plus some kind of shielding material?), and a seeming lack of hard data for long term health impact, count me among the concerned. (happy to have my worries put to rest by HN'ers!)