(1) Area 1A description. (Tieton-Naches Area.) That portion of T14N, R17E and those portions of Sections 31, 32 and 33, T15N, R17E, lying southwest of the Naches-Selah Canal; and that portion of T14N, R16E, and those portions of Sections 35 and 36 lying southeast of the Tieton and Naches rivers.

(2) Area 1A restrictions. On and after April 15th through October 31st, the use and application of low volatile formulations of use restricted herbicides is prohibited. On and after April 15th through October 31st, aircraft applications of use restricted herbicides are allowed on dry land wheat up to within one-quarter mile of susceptible crops.