Site plan review by the Planning Board is required when changing the use of a property from one use classification to another on the Use Table, unless the new use requires a special permit, in which case a special permit shall be required. Where a change of use is proposed and site plan review is required, the Planning Board shall require the correction of any zoning violations and may require reasonable improvements in landscaping, access, drainage, lighting, and buffers that are proportionate in scope to the impact of the change in use. Improvements with a cumulative cost of no more than 10% of the pre-change assessed value shall be deemed to be proportionate in scope.