Wash. Rev. Code § 84.34.030
(1) An owner of land desiring current use classification under RCW 84.34.020 must make application as follows:
(b) Application for classification under:
[ 2014 c 137 s 6; 1989 c 378 s 10; 1973 1st ex.s. c 212 s 3; 1970 ex.s. c 87 s 3.]