It is the intent of the legislature that:
(1) STATUTORY GOAL. The soil erosion rate on each individual cropland field in the state does not exceed the tolerable erosion level on or after January 1, 2000.
(2) INTERIM GOALS; COUNTIES. The soil erosion rate in each county in the state does not exceed 1.5 times the tolerable erosion level on or after July 1, 1990 and does not exceed the tolerable erosion level on or after July 1, 1993.
(3) INTERIM GOALS; INDIVIDUAL CROPLAND FIELDS. The soil erosion rate in each individual cropland field in the state does not exceed 3 times the tolerable erosion level on or after July 1, 1990, and does not exceed 2 times the tolerable erosion level on or after July 1, 1995.
(4) INTERIM GOAL; STATE-RUN FARMS. The soil erosion rate on individual cropland fields of farms owned by the University of Wisconsin System or any other department or agency of state government does not exceed the tolerable soil erosion level on or after July 1, 1990.