EPA Administrator Lisa P. Jackson determined that, as a result of effects of Hurricane Sandy, extreme and unusual supply circumstances exist, which may result in a temporary shortage of gasoline compliant with federal regulations. The federal waiver will help ensure an adequate supply of fuels in the impacted states.
The waiver allows the sale and distribution of conventional gasoline in a number of Eastern states that are required to use reformulated gasoline, and allows a number of additional states to mix reformulated gasoline and conventional gasoline to remove potential barriers to the supply of gasoline to the region.
More information: http://epa.gov/enforcement/air/fuel-waivers.html