(1) The presiding officer for brief adjudicative proceedings shall not issue an oral order.

(2) Within ten days of the final date for submission of materials or oral argument, if any, the presiding officer shall enter a written initial order. The initial order will contain a brief written statement of the reasons for the decision and information about any internal review available.

(3) If a party does not request administrative review of an initial order in accordance with WAC 16-08-148, the initial order becomes a final order on the twenty-first calendar day after service of the initial order.