MIN6 Development at Risk of Subsidence due to past or present underground mineral extraction

Closeddate_range16 Oct, 2019, 9:30am - 11 Dec, 2019, 5:00pm

Policy MIN6 Development at Risk of Subsidence due to past or present underground mineral extraction

Areas of Potential Subsidence associated with salt mining to the east and northwest of Carrickfergus are designated as identified on Map 7.1.

Planning permission will not be granted for any new built development within Areas of Potential Subsidence associated with the Carrickfergus disused salt mines in the interests of public safety.

Other known abandoned mines, shafts and adits are identified on the GSNI GeoIndex map viewer, currently accessible at: http://mapapps2.bgs.ac.uk/GSNI Geoindex/home.html

Planning permission will only be granted for new built development in proximity to other known abandoned mines, shafts and adits, where a Mine Risk Assessment is submitted with the application which confirms to the satisfaction of the council the suitability of the site for the development and addresses any health and safety issues.

Justification and Amplification

Areas of potential subsidence associated with disused salt mines in the Carrickfergus Area are carried forward from draft BMAP. These areas should not be developed for buildings intended for human habitation in the interests of public safety.

Elsewhere this policy will be applied where there are abandoned or disused mines, shafts and adits. These areas are largely related to historical iron ore and bauxite exploitation, particularly in the Cargan area, in the north of the Borough. Land instability, mine gas migration and water emissions can all present risks in these areas. Accordingly, in the interests of public health and safety it is necessary that applicants can demonstrate there is no risk to the proposed development. A Mine Risk Assessment must be submitted with the planning application to ascertain and mitigate, if possible, any risk to the public, the structure(s) and during development. GSNI will be consulted for any proposed development that entails major ground works within 100 metres of an abandoned mine working or area of undermining. GSNI would welcome pre-application discussions on any proposed development in such areas.

Map 7.1 Areas of potential subsidence - Carrickfergus

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