Wis. Admin. Code § WEM 1.05
An owner or operator who fails to pay a fee under s. WEM 1.03 or 1.04 on or before its due date shall pay a surcharge of 20% of the unpaid balance of the fee due.
History: Cr. Register, January, 1990, No. 409, eff. 2-1-90; am. Register, April, 1994, No. 460, eff. 5-1-94; correction made under s. 13.93 (2m) (b) 7., Stats., Register, September, 1994, No. 465.