Chapter 18.30 COMMERCIAL/INDUSTRIAL DISTRICT (CI) This chapter is included in your selections. Sections: 18.30.010 Permitted uses. 18.30.020 Prohibited uses. 18.30.030 Junkyards. 18.30.040 Height limit. 18.30.050 Front yards, side yards and rear yards. 18.30.060 Dimensional standards – Minimum lot area. 18.30.070 Signs and sidewalks.