Protection offset restrictions. No building or structure shall hereafter be erected, structurally altered, or relocated within the wetland protection offsets. This includes, but is not limited to, any building (including sheds and accessory structures), deck, pool, any hard surface (asphalt, concrete, pavers, gravel, etc.), or any other feature deemed a structure or building by the Public Works and Development Director or his/her designee. Landscape features (including but not limited to fences, retaining walls, planting beds, plantings, etc.) are allowed within the wetland protection offset area as long as they do not cross into and/or impact the wetlands. Grading, excavation, and filling are allowed within the wetland protection areas as long as they do not cross into and/or impact the wetlands. Per the discretion of the Public Works and Development Director or his/her designee, the only exceptions to these requirements shall be work associated with approved DNR wetland disturbance activities (examples: wetland boardwalks and wetland crossings).