Wash. Admin. Code § 16-575-015
(1) Beginning on July 1, 2007, the assessment rate for vinifera grapes grown in this state shall not be less than three dollars per ton nor more than twelve dollars per ton. The assessment rate for wine producers shall not be less than $0.02 per gallon nor more than $0.08 per gallon. The Washington wine commission may adjust the assessment amount levied on wine producers and grape growers as needed to fund necessary commission activities. Provided, that any adjustment in the assessment rate by the commission be levied in an equal and proportional manner upon both the wine producers and grape growers. In determining whether to adjust the assessment amount the commission shall consider the following factors:
[Statutory Authority: RCW 15.88.110, 66.24.215 and chapter 34.05 RCW. WSR 07-08-079, § 16-575-015, filed 4/2/07, effective 5/3/07. Statutory Authority: Chapter 15.88 RCW and 1997 c 303. WSR 99-12-104, § 16-575-015, filed 6/2/99, effective 7/3/99.]