This deposit was excavated below the stones that comprised the french drain (15029) within cut 15028. It does not equal 15039 (earthen surface over natural clay geology) but instead is likely equal to 15031, the clay deposit into which the channel for the french drain was cut. This soil was churned up by water that passed through the drain during a storm.

Equal to 15039 but looser compaction because of its location underneath drain. (ALF)