WAC 16-231-235   What are the restrictions due to wind conditions?  The use or application of use restricted herbicides are prohibited in Areas 1, 1A and 2 when the mean sustained wind velocity is over twelve miles per hour throughout the year: Provided, That such applications are prohibited in Areas 1 and 1A on and after April 1 through October 31 when the mean sustained wind velocity is over ten miles per hour: Provided further, 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. 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, § 16-231-235, filed 5/9/07, effective 6/9/07. Statutory Authority: Chapters 15.58 and 17.21 RCW. 91-06-019 (Order 2073), § 16-231-235, filed 2/26/91, effective 3/29/91; 87-09-015 (Order 1923), § 16-231-235, filed 4/6/87; 80-03-036 (Order 1675), § 16-231-235, filed 2/20/80.]