Subtitle 30.2 This subtitle is included in your selections. Chapter 30.21 PURPOSE AND ESTABLISHMENT OF ZONES This chapter is included in your selections. Sections: 30.21.010 Purpose and applicability. 30.21.020 Establishment of zones. 30.21.025 Intent of zones. 30.21.030 Zoning maps and boundaries. 30.21.035 Repealed. 30.21.040 Flood hazard and noise impact areas.