In all cases, this development shall be permitted only if it is landward of the vegetation line or pre-project vegetation line, whichever is applicable; involves no alteration or removal of primary or frontal dunes which would compromise the integrity of the dune as a protective landform or the dune vegetation; is not essential to the continued existence or use of an associated principal development; and meets all other non-setback requirements of this Subchapter.
15A N.C. Admin. Code 07H .0309