The ethanol industry hit both the Environmental Protection Agency and Energy Secretary Rick Perry with lawsuits on Thursday over the dozens of waivers granted to oil refiners allowing them not to blend ethanol in the nation’s gasoline supply.

Growth Energy and The Renewable Fuels Association, two groups that represent the ethanol industry, sued the agencies to get access to records detailing how the administration decided to grant refineries “hardship” waivers, exempting them from EPA’s Renewable Fuel Standard program.