A portion of the surcharge received under RCW 70A.384.110 shall be remitted monthly to the county in which the low-level radioactive waste disposal facility is located in the following manner:
(1) During 1993, six dollars and fifty cents per cubic foot of waste;
(2) During 1994, three dollars and twenty-five cents per cubic foot of waste; and
(3) During 1995 and thereafter, two dollars per cubic foot of waste.