Change of use on nonconforming (substandard) lots: site plan review. A change of use in an existing structure on a lot of record at the time of adoption of this chapter which is less than the required minimum lot size, or has less than the minimum setbacks, shall be required to obtain site plan review approval by the Planning Board to ensure that the substandard lot is of adequate size and suitability for the new use. The Planning Board shall take into consideration site impacts of the new use, including but not limited to traffic volume, traffic circulation, outdoor lighting, off-street parking and loading, landscaping and screening.