Amendments and modifications to the permitted data centre development granted under Reg. Ref. SD18A/0134 - ABP Ref. ABP-302813-18 and the temporary substation permission granted under SD19A/0300 to include: Demolition of the two storey dwelling of Weston House; single storey dwelling and outbuildings/ stables of Weston Lodge; and the single storey dwelling and converted garage of Kent Cottage. Retention of sprinkler tank and pump house to the south-west of Building A Data Centre to replace 4 sprinkler tanks; Retention of 40kW(p) PV panels on the roof of Building A Data Centre; Retention of revised size of northern attenuation pond and loss of permitted landscaping to its south; Retention of ramped access to rear of temporary substation permitted under SD19A/0300; Retention of revised flue arrangement for Building A Data Centre from 2 associated flues per generator to 1 associated flue per generator (16 in total) and grouped into 8 towers of two flues each (each 20m high); Retention of revised position of security fence to north, west and south of Building A Data Centre; and retention and modifications of landscape berm along Baldonnel Road and to east of Weston House. Development will consist of new works to include: Modifications of permitted vehicular entrance to the data centre to include a new single storey guard house (37sq.m) and two internal entrance gates; Modification to car parking so that the permitted entrance to the parking area from the east is closed off; Modifications of flue arrangement for Building B Data Centre from 2 associated flues per generator to 1 associated flue per generator (16 in total) and grouped into 8 towers of two flues each (each 20m high); Modifications to permitted landscape scheme to north and south of Building A Data Centre; Removal of roadside entrance to Erganagh House (demolished), Kent Cottage, and the former scaffolding yard; and removal of roadside entrance to Weston House and its replacement with a new agricultural gate and fence to be erected to facilitate access for maintenance and security purposes only all on a site of 9.7Ha located within lands in the Grange Castle South Business Park and the residential properties of Weston House, Kent Cottage and Weston Lodge as well as the former scaffolding yard on land within the townlands of Aungierstown and Ballybane; Ballybane; and Milltown and bounding Baldonnel Road to the west and south and Grange Castle South access road to the north, Baldonnel, Dublin 22.

Demolition of the existing single storey house of 'Erganagh' and the construction of a two storey data centre and delivery bays with associated three storey office block and services that will have a gross floor area of 35,426sq.m on an overall site of 9.2 hectares. The two storey data centre facility and delivery bay (32,419sq.m) will be separated into two adjoined blocks over two floors with a single data hall on each floor of each data centre with service and technical space around each data hall (4 data halls overall) with a two storey delivery bay attached to the east of the data centre block. A three storey office block and delivery bay (2,882sq.m) is attached to the west of the data centre block. The data centre will be served by services and plant to the north of the data centre blocks that will include 32 standby generators with 2 associated flues per generator (64 in total) and grouped into 16 towers of flour flues each (each 20m high). There are proposed to be 32 acoustically attenuated chillers located on the upper level plant gantries to the north of the data hall blocks (eight on each gantry). The development will also include a new substation with associated transformer yard and single storey transformer building (125sq.m) that will be located to the northeast of the site. The development will be accessed from the Grange Castle South Access Road from the north via the Baldonnel Road and will also include ancillary site development works, including 2 attenuation ponds, to connect to existing Grange Castle infrastructural services as well as fencing, signage, services road, entrance gate, 70 car parking spaces including 3 disabled car parking spaces, and 30 sheltered bicycle parking spaces. The development will be enclosed with landscaping to all frontages including a wetland to the west all on a site (9.2ha) located within lands in the Grange Castle Business Park South and the residential properties of Erganagh, Kent Cottage and Weston Lodge on land with the townlands of Aungierstown and Ballybane; Ballybane; and Milltown and bounding Baldonnel Road to the west and south and Grange Castle South Access Road to the north, Baldonnel, Dublin 22. An Environmental Impact Assessment Report (EIAR) has been submitted with this application.

Demolition of the existing single storey house of 'Erganagh' and the construction of a two storey data centre and delivery bays with associated three storey office block and services that will have a gross floor area of 35,426sq.m on an overall site of 9.2 hectares. The two storey data centre facility and delivery bay (32,419sq.m) will be separated into two adjoined blocks over two floors with a single data hall on each floor of each data centre with service and technical space around each data hall (4 data halls overall) with a two storey delivery bay attached to the east of the data centre block. A three storey office block and delivery bay (2,882sq.m) is attached to the west of the data centre block. The data centre will be served by services and plant to the north of the data centre blocks that will include 32 standby generators with 2 associated flues per generator (64 in total) and grouped into 16 towers of flour flues each (each 20m high). There are proposed to be 32 acoustically attenuated chillers located on the upper level plant gantries to the north of the data hall blocks (eight on each gantry). The development will also include a new substation with associated transformer yard and single storey transformer building (125sq.m) that will be located to the northeast of the site. The development will be accessed from the Grange Castle South Access Road from the north via the Baldonnel Road and will also include ancillary site development works, including 2 attenuation ponds, to connect to existing Grange Castle infrastructural services as well as fencing, signage, services road, entrance gate, 70 car parking spaces including 3 disabled car parking spaces, and 30 sheltered bicycle parking spaces. The development will be enclosed with landscaping to all frontages including a wetland to the west all on a site (9.2ha) located within lands in the Grange Castle Business Park South and the residential properties of Erganagh, Kent Cottage and Weston Lodge on land with the townlands of Aungierstown and Ballybane; Ballybane; and Milltown and bounding Baldonnel Road to the west and south and Grange Castle South Access Road to the north, Baldonnel, Dublin 22. An Environmental Impact Assessment Report (EIAR) has been submitted with this application.

The proposed development primarily comprises the provision of two 110kV transmission lines and a 110kV Gas Insulated Switchgear (GIS) substation compound along with associated and ancillary works and is described as follows: The proposed 110kV GIS Substation Compound is to be located on lands to the north-east of the two storey data centre facility and associated three storey office block that was permitted under SDCC Reg. Ref. SD18A/0134/An Bord Pleanála Ref. ABP-302813-18, and within an overall landholding bound to the north by the Grange Castle South Business Park access road; to the west by the Baldonnel Road and to the south by 3 residential properties and the Baldonnel Road; and to the east by the Google data centre facility within the Grange Castle South Business Park, Baldonnel, Dublin 22. The site of the proposed development has an area of c. 0.9163 hectares. The proposed 110kV Gas Insulated Switchgear (GIS) Substation Compound includes the provision of a two storey GIS Substation building (with a gross floor area of 1,307.2sqm) (known as the Aungierstown Substation), two transformers, lighting and lightning masts, car parking, associated underground services and roads within a 2.6m high fenced compound and all associated construction and ancillary works. Two proposed underground single circuit 110kV transmission lines will connect the proposed Aungierstown 110kV GIS Substation to the existing 220kV / 110kV Castlebaggot Substation to the immediate north-east. The proposed transmission lines cover a distance of approximately 120m and 140m within the townlands of Ballybane, and Aungierstown and Ballybane. The development includes the connections to the two substations (existing and proposed), changes to landscaping permitted under SDCC Reg. Ref. SD18A/0134 / An Bord Pleanála Ref. ABP-302813-18 and all associated construction and ancillary works. An Environmental Impact Assessment Report has been prepared in respect of this application. The planning application and the Environmental Impact Assessment Report may be inspected free of charge or purchased on payment of a specified fee (which fee shall not exceed the reasonable cost of making such copy) during public opening hours for a period of seven weeks commencing on the 21st January 2021 at the following locations: The Offices of An Bord Pleanála, 64 Marlborough Street, Dublin 1. South Dublin County Council, County Hall, Town Centre, Tallaght, Dublin 24. The application may also be viewed/downloaded on the following website: www.aungierstown-substation.com Submissions or observations may be made only to An Bord Pleanála ('the Board'), 64 Marlborough Street, Dublin 1 during the above-mentioned period of seven weeks relating to: the implications of the proposed development for proper planning and sustainable development, and the likely effects on the environment of the proposed development, and the likely significant effects of the proposed development on a European site, if carried out. Any submissions/observations must be accompanied by a fee of €50 (except for certain prescribed bodies) and must be received by the Board not later than 5.30p.m. on the 10th March 2021. Such submissions/observations must also include the following information: The name of the person making the submission or observation, the name of the person acting on his or her behalf, if any, and the address to which any correspondence relating to the application should be sent, The subject matter of the submission or observation, and The reasons, considerations and arguments on which the submission or observation is based in full. (Article 217 of the Planning & Development Regulations refers). Any submissions or observations which do not comply with the above requirements cannot be considered by the Board. The Board may at its absolute discretion hold an oral hearing on the application. (For further details see ‘A Guide to Public Participation in Strategic Infrastructure Development' on the Board’s website www.pleanala.ie). The Board may in respect of an application for permission/ approval decide to (a) (i) grant the permission/approval, or (ii) make such modifications to the proposed development as it specifies in its decision and grant permission/approval in respect of the proposed development as so modified, or (iii) grant permission/approval in respect of part of the proposed development (with or without specified modifications of it of the foregoing kind), and any of the above decisions may be subject to or without conditions, or (b) refuse to grant the permission/approval. Any enquiries relating to the application process should be directed to the Strategic Infrastructure Development Section of a Bord Pleanála (Tel. 01- 8588100). A person may question the validity of any such decision by the Board by way of an application for judicial review, under Order 84 of the Rules of the Superior Courts (S. I. No.15 of 1986, as amended), in accordance with section 50 of the Planning and Development Act, 2000, as amended. Practical information on the review mechanism can be accessed under the heading Information on cases / Weekly lists - Judicial review of planning decisions on the Board's website www.pleanala.ie or on the Citizens Information Service website www.citizensinformation.ie.

Amendments and modifications to the permitted data centre development granted under Reg. Ref. SD18A/0134 - ABP Ref. ABP-302813-18 and the temporary substation permission granted under SD19A/0300 to include: Demolition of the two storey dwelling of Weston House; single storey dwelling and outbuildings/ stables of Weston Lodge; and the single storey dwelling and converted garage of Kent Cottage. Retention of sprinkler tank and pump house to the south-west of Building A Data Centre to replace 4 sprinkler tanks; Retention of 40kW(p) PV panels on the roof of Building A Data Centre; Retention of revised size of northern attenuation pond and loss of permitted landscaping to its south; Retention of ramped access to rear of temporary substation permitted under SD19A/0300; Retention of revised flue arrangement for Building A Data Centre from 2 associated flues per generator to 1 associated flue per generator (16 in total) and grouped into 8 towers of two flues each (each 20m high); Retention of revised position of security fence to north, west and south of Building A Data Centre; and retention and modifications of landscape berm along Baldonnel Road and to east of Weston House. Development will consist of new works to include: Modifications of permitted vehicular entrance to the data centre to include a new single storey guard house (37sq.m) and two internal entrance gates; Modification to car parking so that the permitted entrance to the parking area from the east is closed off; Modifications of flue arrangement for Building B Data Centre from 2 associated flues per generator to 1 associated flue per generator (16 in total) and grouped into 8 towers of two flues each (each 20m high); Modifications to permitted landscape scheme to north and south of Building A Data Centre; Removal of roadside entrance to Erganagh House (demolished), Kent Cottage, and the former scaffolding yard; and removal of roadside entrance to Weston House and its replacement with a new agricultural gate and fence to be erected to facilitate access for maintenance and security purposes only all on a site of 9.7Ha located within lands in the Grange Castle South Business Park and the residential properties of Weston House, Kent Cottage and Weston Lodge as well as the former scaffolding yard on land within the townlands of Aungierstown and Ballybane; Ballybane; and Milltown and bounding Baldonnel Road to the west and south and Grange Castle South access road to the north, Baldonnel, Dublin 22.

Retention of single storey client control room (248.5sq.m) associated with the planned future substation that will be located to the north-east of the permitted data centre development granted under Reg. Ref. SD18A/0134/ABP Ref. ABP-302813-18; the development will form an amendment and modification of the permission granted for a single storey transformer building (125sq.m) under Reg. Ref. SD18A/0134/ABP Ref. ABP-302813-18; no other changes to the permission granted under this decision are proposed under this application on a site within the townland of Aungierstown & Ballybane.

Permission for a period of ten years for development at this site of 16.5 hectares that is located within lands in the Grange Castle South Business Park and includes the residential property of Ballybane, Old Nangor Road on land within the townlands of Milltown; Ballybane and; Aungierstown and Ballybane; and bounding Baldonnel Road to the west; both the Old and New Nangor Road to the north; and Grange Castle South Access Road to the South, Baldonnel, Dublin 22. The development will consist of the following: (1) The demolition of the existing two storey dwelling of Ballybane and associated farm buildings (565sq.m) and the construction of 3 two storey data centres with mezzanine floors at each level of each facility and associated ancillary development that will have a gross floor area of 80,269sq.m on an overall site of 16.5hectares. (2) 1 two storey data centre (Building A) that will be located to the south-west of the site and will have a gross floor area of 28,573sq.m. and will include 26 emergency generators located at ground floor level within a compound to the northern side of the data centre with associated flues that will be 25m in height. The facility will also include 26 ventilation shafts which will be located above the northern end of each emergency generator that will measure 20m in height. (3) 1 two storey data centre (Building B) which will be located to the north-west of the site, and to the immediate north of Building A and will have a gross floor area of 21,725sq.m and which will include 18 emergency generators located at ground floor level within a compound to the northern side of the data centre with associated flues that will be 25m in height. The facility will also include 18 ventilation shafts which will be located above the southern end of each emergency generator that will measure 20m in height. (4) 1 two storey data centre (Building C) which will be constructed last, will be located to the eastern part of the site on a north-south axis and will have a gross floor area of 28,573sq.m. It will include 26 emergency generators located at ground floor level within a compound to the western side of the data centre with associated flues that will be 25m in height. The facility will also include 26 ventilation shafts that will be located above the western end of each emergency generator that will measure 20m in height. (5) Each of the three data centres will include data storage rooms, associated electrical and mechanical plant rooms, loading bays, maintenance and storage spaces, office administration areas, and plant including PV panels at roof level as well as a separate house generator for each facility which will provide emergency power to the admin and ancillary spaces. Each data centre will also include a diesel tank and a refuelling area to serve the proposed emergency generators. (6) The overall height of each data centre apart from the flues and plant at roof level is c. 19.85m above the finished floor level. (7) 1 temporary and single storey substation (29sq.m). (8) 3 single storey MV buildings (each 249sq.m - 747sq.m in total) which manage the supply of electricity from the substations to each data centre and are located to the immediate west of the generator compound within buildings A and B, and to the south of the generator compound withing building C. (9) 8 prefabricated containerised electrical rooms (65sq.m each and 520sq.m overall) that are stacked in pairs to the immediate south of the temporary substation. (10) Ancillary site development works, which will include attenuation ponds and the installation and connection to the underground foul and storm water drainage network and installation of utility ducts and cables which will include the drilling and laying of ducts and cables under Baldonnel stream. Other ancillary site development works will include hard and soft landscaping, lighting, fencing, signage, service road, entrance gate, sprinkler tank house (72sq.m), security hut (30sq.m) and 150 car parking spaces and 78 sheltered bicycle parking spaces. The development will be enclosed with landscaping to all frontages including a wetland to the west. The development will be accessed from the Grange Castle South Access Road from the south via the Baldonnel Road. An Environmental Impact Assessment Report (EIAR) has been submitted with this application.