Purpose. The purpose of this section is to provide standards for the location, development and operation of adult-oriented businesses that, because of their nature, are recognized as having serious objectionable characteristics, particularly when several of them are located in close proximity, thereby having a deleterious effect upon adjacent areas. Special regulation of these uses is necessary to ensure that these adverse effects will not contribute to blighting or downgrading of the surrounding neighborhood. It is, therefore, the purpose of this regulation to prevent the improper location or over concentration of these uses in any area in order to preserve the health, safety and welfare of the citizenry.