Heneb Clwyd Powys Archaeology were instructed by their clients to undertake archaeological monitoring and recording for the proposed conversion of a chapel into a residential property, as a condition of planning consent. It involved monitoring the excavation of new footings for a new extension, located directly within the foundations of the recently demolished previous extension. The archaeological supervision monitored the excavation of footings for a new extension into the remains of the previous modern extension, which was demolished prior to works commencing. During the excavation, a sandstone drain contemporary to the chapel was uncovered. The drain consisted of stones lining the cut with large sandstone slabs enclosing the top. There were no stones at the base as it was laid directly into the natural clay. The footings for the earlier extension had disturbed the stones slightly, but overall they were in good condition. In the layer above the stones, there was a heavy mix of sandstone fragments with modern building rubble, which was either masonry debris from the construction of the chapel or rubble from an unknown sandstone extension or outbuilding.
Sophie Cooledge (Wed,) studied this question.