(1) In the event an applicant or permittee should desire to amend the terms of his application or permit regarding source, quantity, point of diversion, purpose, or place of use, the procedure shall be as outlined in RCW 90.03.380 excepting that no certificate of change will issue but the amendments shall be incorporated in the terms of the permit.

(2) Amendment of a permit may be made without affecting priority, only after full consideration of the proposed changes in accordance with the provisions outlined in RCW 90.03.290.