A. Conformity with conceptual design elements. Building design and materials shall substantially conform to the approved Gateway Center North conceptual design elements. The Planning Commission shall be required to make a determination of substantial conformity to the approved design elements. The required design elements shall include:
1. Variation of building roofline, angle, and height;
2. Variation of building materials and colors;
3. Combined use of stone, siding and windows; and
4. Articulation of elevations to reduce mass. (Ord. 2021-05-1519 § 5 (part))