[Southern Region]
5.2.3 Soils, Geology and Hydrogeology
Soils and water (including groundwater) are considered key environmental media for supporting life. Beyond that basic function soils also provide benefits not least in terms of their value as a material asset for building, agriculture, afforestation etc. The quality of soils and groundwater quality in Ireland are considered generally good although there are pressures impacting on its long term protection and maintenance particularly from land use changes, intensification of use, urbanisation and disposal of organic wastes to soils (EPA, 2008). Despite its importance, there is little in the way of direct EU or national legislation obliging Ireland to maintain soil quality, however indirectly issues such as contaminated land have been dealt with through other legislation (e.g. waste). In comparison implementation of the Water Framework Directive and the POMs provides for protection of our groundwater resource. The key issues associated with waste management and soils, geology and hydrogeology relate to:
Soils quality; Historic unregulated waste disposal sites, illegal landfills, closed landfills; Groundwater contamination leachate from poorly managed waste facilities; historic unregulated waste disposal sites, illegal landfills, closed landfills and illegal dump sites; Generation of waste from mining waste, quarries etc.; Potential impacts to drinking water sourced from groundwater; and Invasive species (discussed previously under biodiversity). Given the strategic nature of the RWMP, focus of the baseline for soils and geology is at a regional level. It is focussed on existing overall soil quality, presence of historic landfills, presence of quarries and mines and groundwater vulnerability for the Region and known activities which have the potential to impact on geology, soil and subsoil quality.
5.2.3.1 Soils Quality
The predominant soil types in the Southern Region are acid / basic deep well drained mineral soils, particularly in County Cork, while poorly drained mineral soils, shallow lithosolic podzolic types and peats are more common along the western Atlantic margins of the region (Kerry, Clare, west Cork and also Kilkenny). Scree sediments are also common in the region, reflecting the presence of hills and mountain belts such as the Blackstairs (Teagasc, EPA, Forest Service and GSI Soil Mapping, 2006).
An evaluation of soils was carried out as part of the National Soil Survey of Ireland (now known as Teagasc) for a number of counties in Ireland over a period of a number of years. Several of these surveys were carried out in counties within the Southern Region, the results of which are provided in Table 5 10. Soil suitability classification essentially consists of outlining the range of uses to which a given soil is adaptable, including determining the production potential of each soil for the normal range of farm or forest crops. This classification provides the essential link between the physical and economic aspects of the potential use of soils.