At least 13% of all affordable units in the Borough, within each bedroom distribution, with the exception of units constructed as of July 1, 2008, and units subject to preliminary or final site plan approval as of July 1, 2008, shall be designated as very-low-income units at 30% of the median income, with at least 50% of all very-low-income units being available to families. Very-low-income units shall be considered low-income units for the purposes of evaluating compliance with the required low-/moderate-income unit splits, bedroom distribution, and phasing requirements of this section.