The bottom of the floor slab of a basement or cellar shall be a minimum of two feet above the seasonal high-water table based on mottling data prior to the construction of a new basement and/or cellar. The bottom of any proposed sump pit shall also be located a minimum of two feet above the seasonal high-water table. Soil boring logs and/or soil pit profiles shall be provided to document the seasonal high-water elevation to the satisfaction of the Zoning Officer, Construction Official and/or Borough Engineer. The soil borings and/or pits shall be located within the footprint of the principal structure.