Nonconforming signs and lots, structures or uses that do not conform to critical area or shoreline regulations are not subject to the provisions of this chapter. Nonconforming signs are regulated pursuant to Chapter 17.80, Signs. Lots subject to "reasonable use provisions" and lots, structures or signs that do not conform to critical area or shoreline regulations are regulated pursuant to the provisions of Chapters 17.52, 17.52A, 17.52B, 17.52C, 17.52D, 17.52E and Title 17B as exist or as modified in the future.