Wash. Rev. Code § 90.44.445
In any acreage expansion program adopted by the department as an element of a groundwater management program, the authorization for a water right certificate holder to participate in the program shall be on an annual basis for the first two years. After the two-year period, the department may authorize participation for ten-year periods. The department may authorize participation for ten-year periods for certificate holders who have already participated in an acreage expansion program for two years. The department may require annual certification that the certificate holder has complied with all requirements of the program. The department may terminate the authority of a certificate holder to participate in the program for one calendar year if the certificate holder fails to comply with the requirements of the program.
RCW 90.44.445