WAC 16-230-470   When is the application of use restricted herbicides prohibited due to wind conditions?  The use or application of use restricted herbicides shall be prohibited in the area under order when the mean sustained wind velocity is over twelve miles per hour throughout the year: Provided, That applications of use restricted herbicides shall be allowed in winds up to and including twenty miles per hour when an approved ground apparatus is used and allowed by the label. Ground apparatus shall be approved by the department of agriculture. Approval will be based on research data.



[Statutory Authority: Chapters 17.21, 15.58, and 34.05 RCW. 07-11-041A, § 16-230-470, filed 5/9/07, effective 6/9/07. Statutory Authority: Chapters 15.58 and 17.21 RCW. 91-06-019 (Order 2073), § 16-230-470, filed 2/26/91, effective 3/29/91; 87-09-015 (Order 1923), § 16-230-470, filed 4/6/87; 79-01-038 (Order 1585), § 16-230-470, filed 12/20/78.]