Dumps recorded in sewer heading; either infilling of robbed 17th c cellar immediately to SE in Area E sewer shaft, or possibly backfill of Area E sewer shaft
Mid Greyish Brown sandy silt layer within sewer heading shaft. Only observed in sewer heading section. Probably infill of robbed 17thc cellar (may be backfill of Area E sewer shaft! Upper level not observed, seen from 10.58m OD (max) to base at 10.08m OD
Mid Greyish yellow silty sand dump layer. Only seen in section in sewer heading.Upper contact at 10.08m OD. Infill of robbed 17thc cellar (or possibly backfill of Area E shaft)
Dark Brownish Black sandy, clay silt dump layer within sewer heading. Construction waste layer, due to high level of CBM. Only seen in section. Upper contact at 10.08m OD. Probable backfill of robbed 17thc cellar (possibly backfill of Area E sewer shaft)
