(a) Effective July 1, 1991, the fees herein established shall be assessed at a rate of 66 percent on reports submitted and/or required to have been submitted in 1991 covering the 1990 calendar year.
(b) For the following years, beginning with reports submitted under § 6306 of this title in 1992 covering activities during the 1991 calendar year, the fees herein established shall be assessed at a rate of 100 percent on reports submitted or required to have been submitted under § 6306 of this title by March 1 of each year covering the previous calendar year.
(c) At the conclusion of each 2-year period, the fees imposed under this chapter shall be reevaluated by the State Emergency Response Commission which shall propose to the General Assembly adjustments as necessary to meet current and future needs.