3.C: Nevada

The gasoline sold across most of the state is a conventional formulation. The state has adopted ASTM D4814 Standard Specification for Spark-Ignition Engine Fuel as the state’s standard, with one important difference. Even though ASTM D4814 defines two separate sets of volatility classes for the state (one for areas north of the 38th parallel, one for areas south of it), state regulations require only that the more lenient, North-of-38° limits be met throughout the state. Fig. 1 details volatility requirements for the state’s conventional gasoline.

In addition to this conventional grade, there are two state fuels covering the state’s two main urban areas: