The purpose of this chapter is to provide the authority for guiding and regulating the physical development of Clallam County as provided for in Chapter 36.70 RCW and the Clallam County Charter, as now or hereafter amended. A Planning Department, which shall be the Department of Community Development, is hereby created pursuant to RCW 36.70.040 and together with the Planning Commission, which is hereby created, shall be the planning agency for Clallam County. The authority for planning shall be as authorized in RCW 36.70.040 and the Clallam County Charter, as now or hereafter amended. The Clallam County Comprehensive Plan, as adopted by Ordinance No. 175, 1982, and all subsequent amendments, and all official controls which implement the Comprehensive Plan are hereby adopted under the authority of Chapters 36.70 and 36.70A RCW and the Clallam County Charter, as now or hereafter amended.