York Historic Environment Record

Phase 2 of borehole survey involving excavation and recording of three Trial Trenches (TT), 2 Cable Percussion (CP) drilled boreholes and nine lightweight windowless dynamic rig (WS) drilled boreholes, four of which were designated as water monitoring points (MP), used for data gathering as part of a five year monitoring programme for analysis of water quality and hydrology. This report is the first in a series of Interims pertaining to the Phase 2 borehole survey works and deals solely with the monitoring and logging of Site Investigation (SI) works. Forthcoming reporting will cover water quality and hydrology monitoring at regular intervals as stated in the Written Scheme of Investigation (WSI). The Phase 2 borehole programme lends further detail to, and closely supports, the results of the Phase 1 works. The pattern of deposition observed across both Phases 1 and 2 was very similar, considering that together with the comprehensive sampling strategy undertaken in Phase 1 no additional samples retrieved during Phase 2 have been selected for study.