WAC 16-230-160   Desiccants and defoliants -- Ground equipment -- Nozzle and pressure requirements for the entire area under order.  The following requirements apply to the entire area under order as listed in WAC 16-230-150:

     (1) Nozzle requirements - a minimum orifice diameter of .052 inches shall be used for application of all use restricted desiccants and defoliants: Provided, That a RD-2 Raindrop nozzle shall be allowed.

     (2) Pressure requirements - maximum pressure at the nozzles for all applications of use restricted desiccants and defoliants shall be 30 psi.

     (3) The Washington state department of agriculture may issue a permit upon receipt of a written request to apply use restricted desiccants and defoliants within the area as described in WAC 16-230-150 with nozzles, nozzle type, drift control additives, and/or arrangements other than those allowed herein. The director will consider safety factors and the possible exposure to susceptible crops in the areas of proposed application before a permit will be issued.

     (4) Diesel and other fuel oils are prohibited in all tank mixes with desiccants and defoliants.



[Statutory Authority: Chapters 17.21, 15.58, and 34.05 RCW. 07-11-041A, § 16-230-160, filed 5/9/07, effective 6/9/07. Statutory Authority: Chapters 15.58 and 17.21 RCW. 91-08-058 (Order 2081), § 16-230-160, filed 4/2/91, effective 5/3/91; 87-15-001 (Order 1938), § 16-230-160, filed 7/2/87; 80-05-005 (Order 1682), § 16-230-160, filed 4/4/80; 79-02-046 (Order 1591), § 16-230-160, filed 1/29/79; Order 1545, § 16-230-160, filed 11/30/77.]