(1) All burning to improve and maintain fire dependent ecosystems within Conservation Areas and Natural Area Preserves shall be accomplished under a burning plan that has been approved by the department's land and water conservation division and fire control division managers. The burning plan must be a part of a total management plan approved by the land and water conservation division.

(2) Burning for this purpose may be allowed inside nonattainment areas, or urban growth areas.

(3) Burning for this purpose shall not be allowed during periods of air pollution episodes or air quality impairment called under chapter 173-425 WAC.