All land uses for which development (site plan or subdivision) approval is granted subsequent to the adoption of this chapter or for which site plan or subdivision approval was previously granted under regulations heretofore in effect shall be required to maintain all sight triangles, structures, and improvements, including stormwater collection structures, piping, and stormwater management facilities shown on the approved site plan or subdivision plan in a safe and orderly condition. In addition to the maintenance responsibilities specified above, additional maintenance responsibilities shall include, but are not limited to, the following:
(a) All ground cover and plantings within screening and landscaping areas shown on an approved site plan or subdivision shall be regularly maintained. When plant material shown on an approved site plan or subdivision dies, it shall be replaced within the first 30 days of the next planting season.
(b) Where a site plan specifies an outdoor refuse storage area, refuse shall only be stored outdoors in such areas. Refuse containers located elsewhere on the site shall not be permitted.