643.350.  Inspection fee — contractor to remit portion, deposit in Missouri air emission reduction fund, use of, balance not to lapse — moneys may be deposited into general revenue fund, when — supplementation of funds. — 1.  A fee, not to exceed twenty-four dollars, may be charged for an emissions inspection conducted under the emissions inspection program established pursuant to sections 643.300 to 643.355.

  2.  The fee shall be conspicuously posted on the premises of each emissions inspection station.

  3.  The commission shall establish, by rule, the portion of the fee amount to be remitted by the emission inspection station to the director of revenue and the number of days allowed for remitting fees.

  4.  The official emission inspection station shall remit the portion of fees collected, as established by the commission pursuant to this section, to the state treasurer within the time period established by the commission.  The state treasurer shall deposit the fees received in the state treasury to the credit of the "Missouri Air Emission Reduction Fund", which is hereby created.  Moneys in the fund shall, subject to appropriation, be expended for the administration and enforcement of sections 643.300 to 643.355 by the department of natural resources, the Missouri highway patrol, and other appropriate agencies.  Any balance in the fund at the end of the biennium shall remain in the fund and shall not be subject to the provisions of section 33.080. All interest earned by moneys in the fund shall accrue to the fund.  If in the immediate previous fiscal year, the state's net general revenue did not increase by two percent or more, the state treasurer may deposit moneys, except for gifts, donations, or bequests, received under this section beginning January first of the current fiscal year into the state general revenue fund.  Otherwise, the state treasurer shall deposit such moneys in accordance with the provisions of this section.

  5.  In addition to funds from the Missouri air emission reduction fund, costs of capital or operations may be supplemented, upon appropriation, from the general revenue fund, the state highway department fund, federal funds or other funds available for that purpose.