The Zoning Code repeal and recreation of 2006 created special overlay zoning districts known as "design guide overlay districts." The design guide overlay districts shall be mapped as their originally approved borders. A design guide overlay district does become a part of the Zoning Ordinance and mapping when it is adopted by the Common Council as part of Chapter 380, Comprehensive Plan, of the City's Code, deeming it necessary to promote the public health, safety, morals and welfare, and further expresses the concepts, rationale and intent employed by the Plan Commission and planning staff when applying this chapter, deeming it necessary to promote the health, safety, morals and welfare.