This report analyzes the growing profits of California's major refiners in the second quarter of 2015, which saw a record price spike. In reviewing data from the California Energy Commission, researchers found that oil refiners were able to triple refiner margins the second week of July to a record $1.61 a gallon, representing the amount of money refiners receive for each gallon sold at the pump. The historical margin over the last fifteen years is 48 cents
http://consumerwatchdog.org/resources/thegoldenstategouge.pdf