U.S. Sen. Mark Begich says he didn’t support a federal decision extending the comment period on a study of large mining impacts in the Bristol Bay region.

The U.S. Environmental Protection Agency extended until June 30 the comment period on its revised watershed assessment. The comment period originally was to end May 31.

Begich told a town hall Friday that EPA has plenty of material to work with, without the extended comment period. He said more time can mean more politics added to the process.