The minimum area for any project in the Del Coronado PRO zone shall be thirty-four hundredths (0.34) of an acre. One-family dwellings may be subdivided from the overall project area subject to the lot width, lot depth and lot frontage provisions of this Chapter. Each project within the Del Coronado PRO zone shall be permitted two (2) one-family dwellings and twenty-one (21) multifamily dwelling units.