Chapter 18E.70 FLOOD HAZARD AREAS This chapter is included in your selections. Sections: 18E.70.010 Purpose. 18E.70.020 Flood Hazard Areas. 18E.70.030 Flood Hazard Area Review Procedures. 18E.70.040 Flood Hazard Area Standards. 18E.70.050 Appendices. A. Floodplain/Floodway Analysis.