Copper kills fish. Pebble adds copper.

Copper kills fish. Pebble adds copper.

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:

Initial Impressions of the Draft Environmental Impact Statement

Initial Impressions of the Draft Environmental Impact Statement

What’s considered to be the most important document of the permitting project, the Draft Environmental Impact Statement, for the proposed Pebble mine was released last week. In it, the Army Corps of Engineers (Corps) fails to consider many pertinent issues and potential impacts from the project, largely ignores the established science regarding the mine, and overlooks many pertinent concerns with Pebble’s proposal.

Pebble says their mine will be small. Don't believe them.

The Pebble 12% Build is the most recent mine proposal presently being evaluated by the US Army Corps of Engineers in an Environmental Impact Statement.[1] The proposed mine would mine only 12% of the identified mineral resource over the 20-year life of the mine. The smaller, ‘environmentally friendly’ mine proposed by the Pebble Limited Partnership would put all of the acid-generating waste back into the open pit to minimize post-closure water treatment requirements, but perpetual water treatment would still be required.