Section 568.810 - Purpose of ORS 568.810 to 568.890; types of wind erosion(1) The purpose of ORS 568.810 to 568.890 is to effectuate the control of wind erosion by forming districts in which all land owners affected shall carry out wind erosion control measures whenever serious wind erosion conditions prevail.(2) Two types of wind erosion conditions shall be recognized:(a) The actual movement of soil by wind to such a degree that the topsoil is being noticeably destroyed.(b) Conditions which will result in a noticeable movement of the topsoil by wind action.