All conservation futures on agricultural lands acquired pursuant to RCW 64.04.130 or 84.34.200 through 84.34.240, that are held by any nonprofit corporation or association, the primary purpose of which is conserving agricultural lands and preventing the conversion of such lands to nonagricultural uses, shall be exempt from ad valorem taxation if:
RCW 84.36.500
*Reviser's note:RCW 84.34.108 was amended by 1999 sp.s. c 4 s 706, changing subsection (3) to subsection (4).