2 Va. Admin. Code § 5-480-9999
ASTM D 4814-95c, Standard Specification for Automotive Spark-Ignition Engine Fuel, published February 1996.
ASTM D 4815-94a, Standard Test Method for Determination of MTBE, ETBE, TAME, DIPE, Tertiary-Amyl Alcohol and C1 to C4 Alcohols by Gas Chromatography, published September 1994.