Today, and with the Phase I complex model, there is effectively a 1 RVP difference between the Region 1 and 2 standards. In Phase II, this difference basically drops to 0 RVP. Was this intended, and why?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help. The Phase 2 Volatility Standards (55 FR 23658 (June 11, 1990)) provided the basis for the different RVP standards, depending on VOC Control Region, for reformulated gasoline under the Simple Model. The standards for VOC emissions performance for Phase…