By Laura Barron-Lopez - 01/30/14 04:55 PM EST
A group of senators is pushing the Environmental Protection Agency to reconsider its proposed volume levels for the amount of biofuels that must be blended by refiners into the nation's oil supply.
In a letter to EPA chief Gina McCarthy on Thursday, 10 senators warned that if the proposed levels were finalized they would take away all motivation for investments in advanced biofuels.
"Our country requires a diverse and secure energy future that includes advanced biofuels," the letter spearheaded by Sens. Ben Cardin (D-Md.) and Susan Collins (R-Maine) states.
"It is imperative that the EPA encourage the continued expansion of advanced biofuels. Doing so will reduce carbon pollution and contribute to a more sustainable energy supply now and in the future by helping next-generation biofuels take on a larger share of the total [Renewable Fuel Standard]," the letter adds.
While Collins expressed concern over the possible damage corn-based ethanol could inflict on car, boat, or snowmobile engines, she said developing advanced biofuels would help the U.S. meet its energy and environmental challenges.