Borehamwood, WD6
North London
A 1.2 metre inspection pit was dug, taking care not to interfere with services. A 3-metre hole was drilled with casing to protect the gravel from collapsing. The drill continued to 6 metres. The hole was reinstated using bentonite pellets, and the turf was put back in place. The task was repeated at the front of the property, with block paving being reinstalled and all arisings removed.