Wherever a lot in the Light Industrial Zone is less than one hundred (100) feet in width one (1) side yard area width may be reduced by one (1) foot for each whole five (5) foot interval for which the lot width is less than one hundred (100) feet. If the reduction results in a side yard area width of six (6) feet or less, the owner may build the building to the property line on the sideline where there would be a side yard of less than six (6) feet.