American Coalition for Ethanol officials say EPA is misinterpreting a rule put in 24 years ago that doesn’t mention E15 because it wasn’t around at the time.  That regulation involves reid vapor pressure or R-V-P which is a generic term for gasoline volatility. The rule allows one pound higher of R-V-P if using E 10 fuel. ACE  Senior Vice President Ron Lamberty says the EPA interpretation leaving out E 15 effectively limits the sale of E 15 to only flex fuel vehicle owners from June 1 to  September 15.

Lamberty says gas stations are shying away from selling E 15 because of the rule misinterpretation.

Lamberty says EPA’s refusal to change the rule is effectively mandating higher evaporative emissions and higher prices during the busiest driving time of the year.