the limited depth of the foundation layer of the surface and the presence of painted stucco on the delimiting walls suggest that the SU served as a simple floor surface rather than the bottom of a pool or water reservoir; a possible spoliation cut centered within the floor (SU2027) may suggest that the center of the SU featured a more elaborate surface (perahaps opus scutulatum, as attested by a single irregular tessera at the Southwest corner SU2027)