Exemption for Site Plans Proposing Minor Use Changes. All site plans proposing building additions under 5,000 gross square feet of additional floor area and/or changes in parking lot configuration only shall be reviewed and acted upon by the Zoning Officer within 90 days of a complete submission. The Zoning Officer shall either approve, conditionally approve or deny the site plan. Any denial shall state the reasons for denial and reference the sections of this chapter which are in violation. Following approval of a site plan, the applicant may apply for other required permits, including, but not limited to, building permits, grading permits and sign permits.