Site planning risk brief

Extension of permission for planning ref 12/1002: an electrical transmission substation and associated infrastructure and works, within and adjacent to the site of the existing 220/110kV Killonan substation. The development consists of (1) construction of a 220kV Gas Insulated Switchgear (GIS) substation building, of 1,856m2 gross floor area, with a maximum height of approximately 14 metres above ground level, (2) construction of a 110kV GIS substation building of 1,642m2 gross floor area, with a maximum height of approximately 12.5 metres above ground level, (3) construction of associated and ancillary outdoor electrical equipment and other apparatus; construction of three lightning masts of approximately 18.4 metres in height; internal access road, car parking areas, boundary treatment, associated drainage and site development works, (4) associated transfer of circuits from the existing 220/110kV Air Insulated Switchgear (AIS) substation to the proposed GIS substation, (5) construction of six 110kV end masts to facilitate connection of the existing overhead line transmission circuits to the proposed substation equipment by way of underground cable connections. These end masts will replace six existing end masts which are located within the existing ESB Killonan site. Two of the six end masts will be located adjacent to, but outside the western and southern boundaries of the existing substation complex. One of these two end masts will be located in the townland of Coolyhenan, the other will be in the townland of Milltown. The remaining 4 end masts and all other proposed works are located within the existing ESB Killonan substation in the townland of Milltown. The proposed end masts will measure up to a maximum of 21.5metres in height and will be of a similar form, scale and character to those existing and (6) all associated site development works (this application is for a 10 year permission)

Minor modifications to a previously permitted development (Ref. 12/1002). The proposed development comprises the extension of the existing Killonan 220/110 kV Electrical Substation compound by approx. 0.5ha along and adjacent to its existing western boundary. This will facilitate the proposed siting of a previously permitted Line Cable Interface Mast (LCIM) development includes the associated erection of 2.6m high palisade fencing along the extended western boundary of the substation compound and all associated and ancillary development at the existing Killonan 220/110 kV Electrical Substation

The development that will consist of: The installation of solar panels on 2 no. steel frames over each roof of 2 no. existing telecommunication cabins (covering an area of approx. 46 sq.m. and approx. 32 sq.m. respectively, each to a maximum height of 4.5 metres above ground level). Works to consist of all ancillary development works including steel uprights

The existing 30m high telecommunications support structure, with associated panel antenna and link dishes, equipment cabin, and compound enclosed by security fence, and access track previously granted temporary permission under planning ref 11/951. The development will continue to form part of Vodafone Ireland Ltd's existing GSM and 3G Broadband telecommunications network

Construction of dwelling, garage, modify an existing site entrance to create a dual combined entrance, install effluent treatment system including all associated site works

The construction of an extension to an existing dwelling, new septic tank, percolation area and all associated site works