Yes, soil everywhere that is contaminated with Al, Fe & Si should be replaced
with clean imported topsoil. Think of the children !
I hear helium is pretty inert? - perhaps use that as a growing medium?
Or maybe level (flood) the site with H2O?
....mmmm, maybe that's why the dutch are now building floating towns !
http://www.hollandtrade.com/vko/zoeken/ShowBouwsteen.asp?
bstnum=1233&location=&highlight=
(but the picture still shows nasty contaminated soils in the floating gardens...)
|