Environmental Protection Agency Administrator Gina McCarthy held a conference call with media this morning in advance of her trip to Missouri this week to talk about the proposed Waters of the United States rule, or WOTUS.

I had the last question on the press conference and took the liberty of going off topic to ask about when the final rule on the volume obligations under the Renewable Fuel Standard (RFS) would be released. “I’m hoping it will come out soon,” she said. Explaining about the delay in releasing the final rule, which was expected by the end of June, McCarthy said it has become clear that there is concern “not only about what the volumes of the fuels are but the way in which we are adjusting those volumes.”

McCarthy stressed that the administration “continues to have a strong commitment to biofuels” and they want to make sure the final rule “clearly reflects that interest.”

“My goal is always to make sure we get it right,” she concluded.

Listen to McCarthy answer the question here. EPA Administrator Gina McCarthy on RFS rule release