All refuse shall be stored in watertight, insectproof, rodentproof containers. When central refuse pickup points are used, screening shall be provided as detailed herein, and no RV lot or space shall be more than 500 feet from a central refuse pickup point. All outdoor refuse storage areas shall be screened on all sides from public view and, at a minimum, shall be enclosed on three sides with a six-foot-high concrete block or masonry wall, or a solid fence, with a solid gate for access installed on the fourth side. The location to central waste receptacle containers may be increased when garbage collection services are provided and part of the management plans of the park.