Annually, on or before January 15, the Board of Supervisors shall adopt the budget, appropriate the sums which it deems necessary to operate and carry out the District's functions for the next ensuing fiscal year, and assess each member municipality for its proportionate share of the sums so appropriated, and adopt a schedule designating when such assessments are due and payable by the member municipalities. (Amended 2011, No. M-11 (Adj. Sess.), § 2, eff. July 12, 2012.)