STLtoday - News - Maplewood mall will cover toxic ground: "Past rules were too strict, he said. For example, a hardware store owner couldn't buy a vacant lot next door because he couldn't afford to clean up the groundwater to drinking-water standards. 'It doesn't make sense,' he said. 'No one will ever use it for drinking water.' "

Oh that's nice. I'm not going to drink the groundwater NOW, so let's just pave over it and forget there was ever any problem here.