(1) Purpose of supplemental directives. The department may issue supplemental directives to the forest landowner, timber owner and operator, advising them to take or not take as part of any forest practices operations specified actions the department determines to be preferred courses of action or minor changes in the operation to provide greater assurance that the purposes and policies set forth in RCW 76.09.010 of the act will be met.

(2) Content of supplemental directives. Supplemental directives shall indicate the reason for their issuance.

(3) Form, service. All supplemental directives shall either be in writing, or be confirmed in writing. The supplemental directive shall be given to the operator and a copy mailed promptly to the forest landowner and to the timber owner if different than the forest landowner.

(4) Directive constitutes approval. No other approval of the department shall be necessary to conduct forest practices operations in compliance with the terms of a supplemental directive.

(5) Informal discussions. The department shall provide an opportunity for an informal discussion before issuing, withdrawing or modifying a supplemental directive.