A phase-out of MTBE and other ether-based oxygenates
must be complete and total to be effective," the letter states.
The 1990 Clean Air Act Amendments required RFG, which is used in nine major US urban areas with ozone pollution problems, to contain two percent of oxygenates
Reduction in aromatics, including the mandated maximum benzene content of 1% should result in reduced fuel permeation through elastomers while increase in oxygenates
may increase permeation through elastomers and, in the case of ethanol, definitely will do so.
DEP said McGinty expressed that a phase-in period would also "ensure that a new oxygenate
could be produced and provided in volumes that refiners need to make the transition without disrupting fuel supplies.
Gallo said that originally Kelly Green Oxygenate
will be synthetically produced at a refinery.
Of this amount, the dominant portion will be attributable to oxygenates
, which will account for over 55 billion pounds, valued at almost $10 billion.
In California, ethanol is being blended into gasoline in areas that do not fall under the Clean Air Act oxygenate
According to EPA, New Hampshire's fuel program preserves "many" of the air quality benefits of the federal program while eliminating the oxygenate
requirement that has led many gasoline providers to add methyl tertiary butyl ether (MTBE) to gasoline.
The compound, called an oxygenate
, has long been viewed as potentially hazardous by environmentalists and even by some in the petroleum industry.
Gasoline must contain MTBE at 15 percent by volume to qualify as an oxygenate
EPA's concern for air quality and the implementation of the RFG program underscored its judgment subsequently to approve MTBE as an oxygenate
authorized for use.
Environmentalists claim the odorless oxygenate
has contaminated thousands of the state's drinking water wells through leaky underground tanks.