Ruddlesden geotechnical

Mining Assessment

Where areas of proposed development lie within a historical mining area, for example coal mining, metalliferous mining or stone quarrying, a mining assessment will often be required by the local authority to support a planning application or to satisfy a planning condition or warranty provider, e.g. NHBC.

Where a proposed development lies within a ‘high risk development zone’ as designated by the Coal Authority, a Coal Mining Risk Assessment would be required to support a planning application for development. Ruddlesden geotechnical produces Coal Mining Risk Assessments in accordance with the guidelines set out by the Coal Authority.

A mining risk assessment would entail a desk study of geological maps and memoirs, historical borehole records and, where available, mine abandonment plans. This data is used to produce a model of the anticipated ground and groundwater conditions beneath the site.

The risk assessment considers whether the proposed development site is likely to be affected by historical mining and hence whether further intrusive investigation, e.g. trial trenches and/ or rotary boreholes, and assessment is required.

Mining risk assessments may also be required for conveyancing purposes.

Case Study

Coal Mining Assessment, Somerset

A Phase 1 Geotechnical Assessment and Coal Mining Risk Assessment indicated that a proposed residential development site in Nailsea was potentially at risk from mining-related subsidence as a result of shallow mine workings within the coal seam beneath the site.