2011 ORS § 646.910¹
Sale of gasoline blended with alcohol prohibited unless mixture meets federal specifications or requirements

(1) A wholesale or retail dealer may not sell or offer to sell any gasoline blended or mixed with:

(a) Ethanol unless the blend or mixture meets the specifications or registration requirements established by the United States Environmental Protection Agency pursuant to section 211 of the Clean Air Act, 42 U.S.C. section 7545 and 40 C.F.R. Part 79, and that complies with ASTM International specification D 4806;

(b) Methyl tertiary butyl ether in concentrations that exceed 0.15 percent by volume; or

(c) A total of all of the following oxygenates that exceeds one-tenth of one percent, by weight, of:

(A) Diisopropylether.

(B) Ethyl tert-butylether.

(C) Iso-butanol.

(D) Iso-propanol.

(E) N-butanol.

(F) N-propanol.

(G) Sec-butanol.

(H) Tert-amyl methyl ether.

(I) Tert-butanol.

(J) Tert-pentanol or tert-amyl alcohol.

(K) Any other additive that has not been approved by the California Air Resources Board or the United States Environmental Protection Agency.

(2) Nothing in this section shall prohibit transshipment through this state, or storage incident to the transshipment, of gasoline that contains methyl tertiary butyl ether in concentrations that exceed 0.15 percent by volume or any of the oxygenates listed in subsection (1)(c) of this section, provided:

(a) The gasoline is used or disposed of outside this state; and

(b) The gasoline is segregated from gasoline intended for use within this state. [1985 c.468 §2(1); 2007 c.739 §20]