When a petition signed by not less than twenty percent of the qualified electors of the county, as determined by the vote cast for governor in the last preceding gubernatorial election, requesting an election upon the abolishment of a weather modification authority as created in sections 61-04.1-27 and 61-04.1-29 is presented to the board of county commissioners, not later than sixty days prior to the next countywide election, the board of county commissioners shall submit the question to the qualified electors of the county at the next countywide election. Upon approval by a majority of the votes cast on the question, the board of county commissioners shall abolish the weather modification authority as of December thirty-first following the election. All unexpended funds remaining in the name of the weather modification authority, after all proper bills and expenses have been paid, shall be deposited in the general fund of the county.