The RFS was originally intended not to codify a 10% blend wall for biofuels, but instead to actually help break through the blend wall by incentivizing investments in higher blends of ethanol, drop-ins and biodiesel as well as new advanced biofuels. The proposed rule is a drastic change in direction and can result in codifying the blend-wall. If finalized, these rules will undercut continued development of advanced biofuels and impact investments already made.

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