(

a) Section 6051.3 shall be operative with respect to the sale of all tangible personal property sold at retail in this state on or after July 15, 1991, but shall cease to be operative during any period described in subdivision (

c) or (d). (

b) On or before November 1, 1993, and on or before every November thereafter, the Director of Finance shall determine and certify to the Governor, the Legislature, and the board both of the following:

(1) Whether the amount in the Special Fund for Economic Uncertainties, as established pursuant to

Section of the Government Code, as of June of the prior fiscal year exceeded percent of General Fund revenues for that prior fiscal year.

(2) Whether the estimated amount in the Special Fund for Economic Uncertainties as of June of the current fiscal year (without inclusion of any revenue derived pursuant to

Section 6051.3 on and after January of the current fiscal year) exceeds percent of General Fund revenues for the current fiscal year. (

c) Section 6051.3 shall cease to be operative on and after January 1, 1994, if on or before November 1, 1993, the Director of Finance certifies pursuant to subdivision (

b) that both amounts certified pursuant to paragraphs (1) and (2) of that subdivision exceed percent of General Fund revenues for the respective fiscal year for which each amount is determined and certified. (

d) Section 6051.3 shall cease to be operative on and after January following any November in which

Section 6051.3 is operative and the Director of Finance certifies pursuant to subdivision (

b) that both amounts certified pursuant to paragraphs (1) and (2) of that subdivision exceed percent of General Fund revenues for the respective fiscal year for which each amount is determined and certified. (

e) Section 6051.3 shall become operative on and after January following any November in which

Section 6051.3 is inoperative and the Director of Finance certifies pursuant to paragraph (2) of subdivision (

b) that the estimated amount does not exceed percent of the General Fund revenues as of June of the current fiscal year.