Chapter 17.54 REGIONAL COMMERCIAL (RC) ZONE This chapter is included in your selections. Sections: 17.54.010 Purpose. 17.54.020 Uses. 17.54.030 Site design and maintenance. 17.54.040 Development standards. 17.54.050 Architectural design. 17.54.060 Parking requirements. 17.54.070 Landscaping and screening. 17.54.080 Special provisions.