If a county, city, or state agency subject to a determination of invalidity has taken action amending the invalidated plan, regulation or part thereof, the county, city, or state agency may move for a hearing to modify or rescind invalidity. Pursuant to RCW 36.70A.302
(7), the board shall expeditiously schedule a hearing on the motion. Not later than thirty days after the hearing on the motion, the board shall issue an order continuing, modifying, or rescinding the determination of invalidity depending upon whether the city, county, or state agency's action has removed the basis for invalidity so that it no longer substantially interferes with the goals of the act. The board may rescind a determination of invalidity but find continuing noncompliance, in which case the board shall establish a new compliance schedule.