The SU is a compact surface, possibly part of leveling for floor above or part of an earlier floor. During post-excavation study, this feature was reinterpreted as a compact deposit of soil abutting the linear stone feature 2514, is a leveling/construction fill likely associated with a floor surface of the Phase 1A building.
Compact brown deposit with orange and black inclusions, S. of 2239, N.of 2514