### Question
Can you define what baseline gasoline means?


### Answer
**Baseline gasoline** is defined as the following in *42 U.S.C. § 7545*:

> in the case of gasoline sold during the high ozone period (as defined by the Administrator) a gasoline which meets the following specifications:


  


 BASELINE GASOLINE FUEL
  PROPERTIES
  API Gravity57.4 
  Sulfur, ppm339   
  Benzene, %1.53
  RVP, psi8.7 
  Octane, R+M/287.3 
  IBP, F91   
  10%, F128   
  50%, F218   
  90%, F330   
  End Point, F415   
  Aromatics, %32.0 
  Olefins, %9.2 
  Saturates, %58.8 

        


#### (ii) Wintertime


The Administrator shall establish the specifications of "baseline gasoline" for gasoline sold at times other than the high ozone period (as defined by the Administrator)

#### Citation:
  - *42 U.S.C. § 7545*
  - Heading: **CHAPTER 85-AIR POLLUTION PREVENTION AND CONTROL > SUBCHAPTER II-EMISSION STANDARDS FOR MOVING SOURCES > Part A-Motor Vehicle Emission and Fuel Standards**

