In addition to the provisions of Title Seven of this Part Eleven, the following standards shall be complied with:
(a) Any natural vegetation shall be kept in a neat and orderly manner as determined by the Zoning Inspector. This shall include periodic mowings, removal of dead trees, etc.;
(b) There shall be no outdoor storage of vehicles for more than forty-eight hours;
(c) There shall be no dumping of trash, refuse or other similar materials.