No person who has any ownership or possessory interest in, or control of, a parcel of land shall allow to exist thereon any hazardous refuse or hazardous weeds, trees, or other vegetation which, by reason of proximity to a building or structure, constitutes a fire hazard. For purposes of this section hazardous weeds, trees, or other vegetation are defined as weeds, trees, or other vegetation which are in such condition and location as to provide a ready fuel supply to augment the spread or intensity of a fire. Nothing contained in this subsection shall be deemed to preclude the Chief from requiring more than the minimum specific requirements set forth above when the Chief determines that conditions exist which necessitate greater fire protection measures.