1268.07 EFFECT OF ADOPTION.
   (a)   Code Appendix. The conceptual development plan for each SP district shall be adopted as an appendix to the Zoning Code and shall, upon its effective date, supersede any conflicting requirements of this Code. Where an SPD requirement is silent on a specific point, the appropriate sections of the Zoning Code shall apply.
   (b)   Site and Subdivision Plans. The approved conceptual development plan shall be the basis for preparation of more detailed site plans for individual development sites as required by Chapter 1278. The conceptual development plan shall also be the basis for preliminary and final subdivision plans as required by the Subdivision Regulations. With the approval of the Planning Commission, conceptual development plans, site plans and/or subdivision plans may be reviewed simultaneously.
   (c)   Changes. Changes to the conceptual development plan of more than a cosmetic nature shall also be approved by City Council by ordinance.
   (d)   Time Limit. Once an SP district is created, it may only be changed through the Charter provisions for zoning amendments. The conceptual development plan shall remain in effect until changed by ordinance of Council as required for the initial adoption in Section 1268.06 .