WAC 16-231-840   What are restrictions due to wind conditions?  The use or application of use restricted herbicides is prohibited in Areas 2, 3 and 4 when the mean sustained wind velocity is over twelve miles per hour throughout the year and in Area 1 when the mean sustained wind velocity is over twelve miles per hour on and after November 1 through April 15 of the following year, and over seven miles per hour from April 16 through October 31: Provided, That applications of use restricted herbicides are 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, § 16-231-840, filed 5/9/07, effective 6/9/07. Statutory Authority: Chapters 15.58 and 17.21 RCW. 91-06-019 (Order 2073), § 16-231-840, filed 2/26/91, effective 3/29/91; 87-09-015 (Order 1923), § 16-231-840, filed 4/6/87; 80-03-028 (Order 1667), § 16-231-840, filed 2/20/80.]