The effective date of a reservation established under the provisions of this chapter shall be the date when a regulation pertaining to a specific reservation has been adopted: Provided, That the effective date for any additional amount of reservation pursuant to the provisions of WAC 173-590-140 shall be the date when such subsequent amendments become effective.
Wash. Admin. Code § 173-590-150
Order DE 75-32, § 173-590-150, filed 3/10/76.