WAC 16-231-912   What are the boundaries and restrictions for Grant County Area 1A?  (1) Area 1A description. Lands generally in the Mattawa area in the southwestern part of the county starting at the west end of the crest of Saddle Mountain at the Columbia River, south boundary line of Section 11, T15N, R23E; thence east along the crest of the Saddle Mountains approximately eighteen miles to the northwest boundary of the atomic energy reservation; thence southwesterly along the atomic energy reservation boundary to Highway 24; thence following Highway 24 to the Vernita Bridge at the Columbia River; thence northwesterly along the Columbia River to the point of beginning.

     (2) Area 1A restrictions.

     (a) The use or application of low volatile formulations of use restricted herbicides is prohibited on and after April 5 through October 31: Provided, That low volatile ester formulations of 2,4-DB may be applied to alfalfa and red clover seed crops on and after November 1 through April 30 of the following year.

     (b) On and after April 5 through October 31, ground applications of use restricted herbicides shall be made using nozzles having a minimum orifice diameter of 0.052 inches: Provided, That applications of use restricted herbicides on asparagus shall be made using nozzles having a minimum nozzle orifice diameter of 0.072 inches.

     (c) On and after November 1 through April 4 of the following year, aircraft applications of use restricted herbicides shall be made using the caution area restrictions (see WAC 16-230-675.)

     (d) On and after April 5 through October 31, aircraft applications of use restricted herbicides are prohibited except by written permit issued by the Washington state department of agriculture.



[Statutory Authority: Chapters 17.21, 15.58, and 34.05 RCW. 07-11-041A, § 16-231-912, filed 5/9/07, effective 6/9/07. Statutory Authority: Chapters 15.58 and 17.21 RCW. 88-05-033 (Order 1965), § 16-231-912, filed 2/12/88; 87-09-015 (Order 1923), § 16-231-912, filed 4/6/87.]