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Coshla Quarry, Co Galway

MKO was commissioned by Coshla Quarries Ltd to prepare an Environmental Impact Assessment Report (EIAR), to accompany a planning application to expand the extraction area of the existing Coshla Quarry in the townland of Barrettspark, Co. Galway. MKO acted as overall project managers, with responsibility for the preparation of the EIAR and planning application. Input from a number of specialists was also required during the course of the project. Planning permission for the quarry extension was granted by Galway County Council in April 2020. The decision is under appeal with An Bord Pleanála.

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Project challenges

The hydrogeological conditions beneath the site were complex. The underlying bedrock strata at the site is mapped as the Burren Formation which is classified by the Geological Survey Ireland as a Regionally Important Karstified Aquifer with conduit groundwater flow characteristics. The existing quarry and the proposed extension area are below the groundwater table and therefore extensive ground investigations were undertaken to provide clarity in respect of the hydrogeological regime present on the site and support additional assessment of the risks to the wider hydrogeological setting.

MKO and the project teams detailed understanding of the ground conditions allowed us to support the quarry operator to overcome the hydrological and hydrogeological challenges at the site. The assessments undertaken considered the effect of the quarry operation with respect to groundwater impacts and concluded that all effects were assessed as not significant.

Main services provided


Strategic planning advice


Pre-application consultation


EIAR preparation


Planning application preparation and management


Response to Further Information (FI) request

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