Structures, or impervious surfaces, existing as of the effective date of this article,
and as amended, shall be deemed existing nonconforming for the purposes of this article.
No structure or impervious surface shall be horizontally expanded to occupy greater
land area inside the buffer; altered in a manner that changes the quantity, velocity,
or quality of stormwater runoff; or moved in whole or in part to any other portion
of the buffer without an authorized encroachment. Any replacement or reconstruction
activity within the buffer shall occur within the original footprint or shall require
compliance with the provisions of this article. No authorized encroachment is required
by this article for repairs, restoration, and renovation performed upon existing structures
and impervious surfaces which are considered to be existing nonconforming as of the
effective date of this article.
