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This report examines four potential scenarios with lower sulfur and lower RVP requirements than current gasoline specifications. In two, summertime RVP is reduced nationwide (excluding California) to 7 pounds per square inch absolute (psia). In the other two, summer time RVP’s are limited to 7.8 psia and 8.8 psia (including a 1 psia waiver for ethanol blending) in regions that currently allow the waiver for conventional gasoline. Reformulated gasoline (RFG) maintains an RVP of 7.0 psia. In three of the cases, sulfur in individual batches is limited to 20 parts per million (ppm) with a company annual average limit of 10 ppm. In one case, the sulfur limits are 10 and 5 ppm, respectively . . .