A DuPont official on Tuesday called upon Congress to preserve a requirement for gasoline blending with advanced biofuels.

The U.S. Environmental Protection Agency in November proposed scaling back ethanol blend requirements for gasoline, citing lower-than-expected gasoline usage and gas stations and cars that cannot take on higher-ethanol fuels.

Jan Koninckx, global business director for Biorefineries at DuPont, appeared before the Senate Agriculture Committee on Tuesday, as part of a hearing on advanced biofuels.

“The bottom line here is that driven by the RFS” – the Renewable Fuel Standard” – “we have completely re-imagined how we fuel our planet. We do so with renewable resources without adding any additional CO2 into the atmosphere. It is a remarkable achievement. And when you look at this from the perspective of a science company – this has actually gone quite fast,” said Koninckx.

Koninckx pointed to DuPont’s investment in biofuels, which includes cellulosic technologies that use crop waste left over after a corn harvest to produce ethanol.

“The Renewable Fuel Standard is working as intended. 2014 is a watershed in our history as an industry – the year we take this technology commercial – and a critical year for all parties to remain steadfast in their commitment to biofuels,” Koninckx said.