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Developers say Pebble Mine won’t hurt Alaska's Bristol Bay.

A gold and copper mine proposed for the headwaters of Bristol Bay would dig up roughly 60 million dump trucks worth of material, construct massive storage structures for toxic waste, build a power plant large enough to power a small city, and bulldoze an 86-mile transportation corridor through pristine ecosystems—but the federal agency assigned to evaluate the mining company’s plan says there’s no risk to the watershed.

The U.S. Army Corps of Engineers has been on the fast-track to permitting the Pebble Mine project and part of that process is determining what impact mining will have on the region’s critically important freshwater resources.

Here’s why the Corps’ assessment doesn’t stand up to a fact check.

The risk is real

Nature and people can’t live without fresh water, and Bristol Bay is the lifeblood that sustains every species calling the region home.

There are more than 190 bird species in Bristol Bay, and all of them depend on a healthy water supply. So do roughly 400 rare freshwater harbor seals that live permanently in Iliamna Lake, where developers want to ship ore concentrate and other materials via a barge system. Brown bears migrate around the region in search of food and depend heavily on salmon. In fact, the salmon that thrive in Bristol Bay’s clean, cold tributaries are critical to the region’s remarkable abundance as mature fish distribute marine nutrients from the Bering Sea and North Pacific throughout the Bristol Bay watershed. This summer, more than 56 million salmon returned to their natal streams to complete their epic life cycles.

The communities of Bristol Bay need a healthy, freshwater-filled environment to thrive, too. Brown bear viewing supports a vibrant tourism industry worth tens of millions every year and salmon fishing supports an industry worth at least one $1 billion every year. Native communities rely on the harvest of salmon and other wild species for most of the protein consumed each year.

The environmental, economic, and cultural risks of this massive open-pit mine located at the headwaters of two of the planet’s most important salmon producing rivers are well documented. And an abundance of care is required to protect Bristol Bay’s irreplaceable resources.

Speed over science

During a comment period on a draft environmental impact statement prepared by the Army Corps, the EPA’s own scientists warned “critical” details about the project are missing and that the overall environmental impact of approving Pebble Mine has not been fully considered. Those missing details mean any of the project’s plans to mitigate potential risks and stave off ecological disaster are also not up to the task.

“Why is the Army Corps rushing a timeline that does not match up with any of the realities of Bristol Bay?” Alannah Hurley, Executive Director, United Tribes of Bristol Bay, asked lawmakers during a hearing on Capitol Hill. “Studies remain undone, data gaps remain unfilled and the draft (environmental impact statement) has been universally condemned by the scientific community, by other federal agencies, and by our people for its lack of thorough analysis of this project and its impact on the people of Bristol Bay."

Congress can act

Congress has an opportunity to protect this crucial habitat.

We cannot let the Pebble Mine happen. This has been a decade-long battle and in the last five years alone, more than half a million Americans have joined WWF in urging the US government to stop the Pebble Mine from moving forward. We cannot stop our fight to protect Bristol Bay, Alaska.

Add your name to the petition we'll be hand-delivering to members of Congress and help us tell elected officials NO to the Pebble Mine.