A nonconforming use may be changed to another nonconforming use of the same or a higher class by grant or special exception only upon determination by the Zoning Hearing Board, that the proposed use will be at least as acceptable to its neighborhood and surroundings as the use it is to replace. In determining acceptability, the Zoning Hearing Board shall take into consideration, among other things, erosion and sedimentation control, ecological impact, traffic generation, nuisance characteristics such as emission of noise, odor, dust and smoke, fire hazards and the hours and manner of operation.