(1) A person who, after written notice from the department, violates RCW 70A.220.020 is subject to a civil penalty of fifty dollars for each violation up to a maximum of five hundred dollars and may be enjoined from continuing violations. Each distribution constitutes a separate offense.

(2) Retailers and distributors shall have two years from May 21, 1991, to clear current inventory, delivered or received and held in their possession as of May 21, 1991.