“Environmental management system” defined. As used in ORS 468.173, “environmental management system” means a continual cycle of planning, implementing, reviewing and improving the actions undertaken at the facility to meet environmental obligations and improve environmental performance that meet

(1) The standards established by the International Organization for Standardization under ISO 14001;

(2) The standards established in the Green Permit program established under ORS 468.501 to 468.521; or

(3) Other standards that meet criteria established by the Environmental Quality Commission by rule. [2001 c.928 §6a]