"We certainly will work with legislative leadership to develop whatever legislation is needed," he said.
Senate President Earl Ray Tomblin and House Speaker Bob Kiss said Tuesday that the portion of the law increasing the size of unmitigated valley fills probably will be rescinded.
But they agreed with Underwood that other portions of the law should be retained.
Kiss said the House of Delegates passed the bill because it allowed the Legislature, instead of a state agency, to spend the money that coal companies pay in mitigation fees like it spends other state money.
The bill also required a study of the effects of valley fills on streams.
"Why would you want to stop studying the effects on streams? It's ridiculous," Kiss said.
Tomblin agreed both those sections should be kept.
Underwood said, "We'll follow generally the recommendations of the commission."