During post-excavation study, this feature was reinterpreted as a leveling fill likely associated with some type of flooring at the southern limit of the Phase 1B building.
The SU is a level of accumulation running throughout the southern part of the courtyard and the area, south of wall 2306. It is likely a colluvial deposit.
Light brown compact deposit E. of wall 2276, running beneath wall 2306, =2460