U.S. Sen. Chuck Grassley (R-Iowa) will play host to a pair of EPA officials at an Iowa biodiesel plant this coming Thursday at 3 pm. Let’s hope he can use the opportunity to teach them the REAL math behind the amount of corn and soybeans it takes to make ethanol and biodiesel.

This story from Biodiesel Magazine says Grassley will talk biofuels at the 30-million-gallon-a-year Central Iowa Energy biodiesel plant in Newton, Iowa with EPA assistant administrator of the Office of Air and Radiation, Gina McCarthy, and EPA director of the Office of Transportation and Air Quality, Margo Oge, who will also visit a family farm and agricultural businesses:

The purpose of Grassley’s invitation was to highlight how EPA policies and regulations impact his constituents in Iowa. Jeff Stroburg, CEO and chairman of Renewable Energy Group Inc., the plant’s managing company, and others in the business will discuss the proposed RFS2 ruling with the senator and two EPA officials.

Many in the industry are calling on EPA to install interim rules to trigger the biomass-based diesel volume requirements sooner rather than later, and to reconsider how the agency negatively views soy-based biodiesel in its faulty indirect land use assumptions.

As you might remember… and you can see in the clip below… Oge is the goofus who believes that it takes 64 acres of corn to make one gallon of ethanol and 400 acres of soybeans for each gallon of biodiesel. Actually, one acre of soybeans makes 64 gallons of biodiesel and one acre of corn makes over 400 gallons of ethanol. And these are the folks deciding Indirect Land Use formulas? Let’s hope Grassley sets her straight.