ACTIVITY

Any form of draining, dumping, dredging, damming, discharging, excavating, filling or grading; the erection, reconstruction, or expansion of any building or structure; the driving of pilings; the construction or improvement of roads and other ways; the changing of runoff characteristics; the intercepting or diverging of ground or surface water systems; the discharging of pollutants; the destruction of plant life including cutting or pruning, the application of fertilizer, pesticides or insecticides; and any other changing of the physical characteristics of land, or of the physical or chemical characteristics of water. Structures shall include, but not be limited to, dwellings, garages, patios, tennis courts, playgrounds, mobile homes, swimming pools, pavement, signs, fences, retaining walls, antennae, utilities, conduits, fuel storage tanks, air-conditioning units, subsurface sewage disposal systems, or other temporary or permanent construction or facility.