The blending of casinghead or natural gasoline is not permitted in an ethanol blend fuel product in quantities larger than required to denature the ethyl alcohol. Notwithstanding this prohibition, a natural gasoline blended product can be made by blending natural gasoline and ethyl alcohol. The natural gasoline blended product shall contain no more than twenty-five percent of natural gasoline and shall contain no less than seventy-five percent of ethyl alcohol. The natural gasoline blended product may only be further blended using gasoline.
S.D. Codified Laws § 10-47B-3.1
Blending of casinghead or natural gasoline with ethyl alcohol prohibited in quantities larger than required for denaturing--Natural gasoline blended products
Source: SL 2010, ch 66, § 2.
Official source: South Dakota Legislature. Reproduced from public-domain South Dakota statutes; confirm against the official source for the current text. Not legal advice.