WAC 16-231-420   What are the boundaries and restrictions for Area 4 for Columbia County?  (1) Area 4 description. This area includes all remaining lands in Columbia County not included in WAC 16-231-413 and 16-231-415.

     (2) Area 4 restrictions.

     (a) On and after May 1 through October 31, ground applications of use restricted herbicides shall be made using nozzles having a minimum orifice diameter of 0.031 inches.

     (b) On and after May 1 through October 31, aircraft applications of use restricted herbicides shall be made using the caution area restrictions (see WAC 16-230-675).



[Statutory Authority: Chapters 17.21, 15.58, and 34.05 RCW. 07-11-041A, § 16-231-420, filed 5/9/07, effective 6/9/07. Statutory Authority: Chapters 15.58 and 17.21 RCW. 91-06-019 (Order 2073), § 16-231-420, filed 2/26/91, effective 3/29/91; 80-03-034 (Order 1673), § 16-231-420, filed 2/20/80.]