The commission has for months now been considering a proposal that would roll back its oversight of water pollution control standards along the Ohio River.
The 8-state body says standards set by member states will protect water quality in the Ohio. And the board argues the federal EPA will provide adequate oversight.
But at a meeting Thursday, the committee tasked with making recommendations to the commission said it needed more time.
ORSANCO Director Richard Harrison says thousands of people have weighed in on the proposal.