"Land disturbing activity" means any activity that will result in movement of earth or a change in the existing soil cover or the existing soil topography (both vegetative and non-vegetative), including the creation and/or replacement of impervious surfaces. Land disturbing activities include, but are not limited to, clearing, filling, excavation and grading. Land disturbing activities do not include agricultural plowing and tilling exempt from stormwater regulations pursuant to SCC 30.63A.200. Compaction that is associated with stabilization of structures and road construction also is a land disturbing activity. Vegetation and drainage facility maintenance practices are not land disturbing activities, provided that the maintenance is performed according to standards adopted by Snohomish County. (Added by Amended Ord. 10-026, June 9, 2010, Eff date Sept. 30, 2010; Amended by Ord. 15-103, Jan. 11, 2016, Eff date Jan. 22, 2016).