Geotechnical Desk Study - Islington Council

Geotechnical Desk Study
It is proposed that the following works are carried out:
• A Phase 1 contamination assessment to determine the potential contamination from previous
land uses.
• A ground investigation comprising three boreholes to a depth of around 20m in the area of
the proposed development and around three machine dug trial pits to a depth of 3m along the
area of cracked tarmac near the top of the cutting.
• Investigation of the integrity of the section of the east side retaining wall that could potentially
be retained, as well as the remainder of the existing wall. This proposed investigation should
include a series of horizontal trial cores through the (exposed) face of the retaining wall to
determine the wall geometry and fill material beyond, together with hand dug trial pits at the
base of the wall to expose and confirm the depth of the wall footings.
• Visual investigation of existing drainage routes within the site, to determine manhole
locations, direction/discharge of flow.
5044006/002 Geotechnical Desk Study (2).doc 23