While this has an obvious impact to fisheries (salmon can’t spawn if their headwaters streams are wiped out), there are less obvious - but extremely severe - risks as well, including metals that will be introduced through mining operations to the waters. Copper is one such metal.
The DEIS says copper will be present at levels above water quality standards for 80 miles (Koktuli to the Mulchatna). That is a major concern. Here’s why:








