Okla. Stat. tit. 17, § 327

A. Any Petroleum Storage Tank Indemnity Fund bill which would change the distribution of the assessment imposed pursuant to the provisions of Section 327.1 of this title and decrease the amount required to be deposited in the Petroleum Storage Tank Indemnity Fund shall require approval of not less than two-thirds (2/3) of the membership of each House of the Legislature to become law. B. The provisions of subsection A of this section shall not apply to any Petroleum Storage Tank Indemnity Fund bill that appropriates monies from the Petroleum Storage Tank Indemnity Fund for purposes of increasing the costs of administering the Indemnity Fund or related administrative functions of the Corporation Commission. C. For purposes of this section, a "Petroleum Storage Tank Indemnity Fund bill" shall mean any bill which amends any or all of Section 328 of this title or any bill that impacts the distribution of the assessment set forth in Section 328 of this title.