I'd say with respect to trace metals, it's probably better than something like a lead-zinc mine or a gold mine, because those are mining areas where metals are concentrated. One area where it's significantly worse is polycyclic aromatics and other organic compounds, because this area is much higher in those sorts of compounds than a typical base metal mine would be, for example. Of course, it's the reason why there's mining activity there, so it's really not a surprise that would be the case.
