The US Environmental Protection Agency (EPA) has released its proposed determination in the Clean Water Act 404(c) process, issuing draft protections for the Bristol Bay watershed related to the proposed Pebble Mine.

The Alaska-based Bristol Bay Regional Seafood Development Association (BBRSDA) has commended the determination, which if finalised, will restrict mining developments in Bristol Bay that would have “unacceptable adverse impacts” to the watershed and health of the sockeye salmon fishery.

The Bristol Bay salmon fishery produces over 50% of the world’s sockeye and is the most valuable commercial salmon fishery on earth, estimated at $1.5 billion annually. After a three-year independent study, EPA has determined that if constructed, the Pebble Mine would negatively impact salmon due to its location and deposit type. “We have seen another incredible salmon run this season, which further highlights the importance of protecting Bristol Bay’s unique fisheries resources,” said Sue Aspelund, executive director of BBRSDA.

“We are pleased that EPA has listened to Alaskans, and following vigorous scientific review and consistent with its authority, to see it move forward with the 404(c) process to protect the fishing industry in Bristol Bay, and adhere to the watershed standards the Clean Water Act put in place over 40 years ago for this very purpose.”

In addition to releasing its proposed determination, the EPA launched another open, public 60-day comment period in its transparent and inclusive process to oversee watershed protections. “The science is extremely clear that large-scale mining and healthy salmon habitat cannot coexist in Bristol Bay. For this reason, we hope that all Alaskans will comment, asking the EPA to see the process through and implement strong protections for salmon and those that depend on them,” said Katherine Carscallen, BBRSDA board member.