(a) The Commission shall conduct a site plan review for the following types of projects and developments:
(1) New construction of all uses within the U-3, U-4, U-4d and U-8 Districts, and their accessory or subordinate uses.
(2) Conversion of an existing structure to another use within the U-3, U-4, U- 4d, and U-8 Districts and except for single family or two (2) family uses, projects that are contemplated in addition or expansion which have any of the following effects:
A. Increase the floor area by fifteen percent (15%) or more of the existing floor area.
B. Alterations or re-arrangement of on-site parking which results in a reduction or increase in the number of parking spaces or placement within a required front yard.
C. Alteration of traffic flow by way of ingress and egress, or within the site itself.
D. Construction of public or private off-street parking areas where permitted in this Zoning Ordinance.
(3) Site plan amendment.
A. Any approved site plan may be amended by request of the applicant for site plan amendment.
B. Alterations or re-arrangement of on-site parking which results in a reduction or increase in the number of parking spaces or placement within a required front yard.
(b) No development or change of use described in Section 1167.02 shall be permitted until the site plan has been reviewed and approved by the Commission, and in the case of U-11 uses by Council, and they determine that the plan is consistent with the purposes and requirements of this Planning and Zoning Code, and that the requirements of this chapter have been satisfied.