The U.S. Environmental Protection Agency is extending the public comment period on its study of large mining impacts in the Bristol Bay region.
The comment period was scheduled to end Friday. EPA announced Thursday that it will now be June 30.
The agency, in a statement, said it got requests from people either wanting to extend or maintain the length of the comment period.
EPA last month released a revised watershed assessment that found construction of a large-scale mine near the headwaters of Bristol Bay could have major impacts even without a mishap.
The group behind the mine project has called the EPA report flawed and unnecessary.
The report is still expected to undergo peer review before a final report is released.