Site Event/Activity record ESF19061 - Monitoring - Ex-Slaughter House

Monitoring of redevelopment of ex-slaughter house, 25 earsham street. The footing trenches were open to a depth of c.800mm except along the north side where they were slightly shallower. An auger survey was conducted to investigate the depths of deposit along the western edge to identify where the castle ditch might be. In total eight separate holes were made, but all these hit obstructions at a depth of 1.5m-1.7m from present ground surface. The auger hit hard mortat. Two other attemps were made reaching 2.7m before hitting an obstruction. The top fills were dark grey clay sands before becoming more silty sand. At 2.6m depth soil was pale yellow brown clay with chalk flecks. All the lower deposits were very wet (S1).