OAR 340-220-0180: Late and Underpayment of Fees

(1) Notwithstanding any enforcement action, the owner or operator will be subject to a late payment fee of: (a) Two hundred dollars for payments received more than seven and less than 30 days late; and (b) Four hundred dollars for payments received on or after 30 days late. (2) Notwithstanding any enforcement action, DEQ may assess an additional fee of the greater of $400 or 20 percent of the amount underpaid for substantial underpayment.