COMHAIRLE CONTAE ÁTHA CLIATH THEAS
SOUTH DUBLIN COUNTY COUNCIL

MEETING OF DEVELOPMENT PLAN MEETING

Tuesday, May 04, 2010

HEADED ITEM NO. 90

Schedule 5

To amendSchedule 5 to read as follows (additional text in bold, deleted text struck through):

 

‘Weston Aerodrome, Lucan

Introduction

This Safeguarding Policy must be read in conjunction with Drawing Number EDAX 9702/C09 Revision 2 (to a scale of 1:10,000) prepared by Aer Rianta Technical Consultants. This Aerodrome Safeguarding Map has been lodged by Weston Aerodrome with South Dublin County Council in pursuance of a direction issued by the Irish Aviation Authority (NR T.02 dated 27.08.98) in pursuance of Articles 5 and 21 of the Air Navigation (Aerodromes and Visual Ground Aids) Order 1970 (S.I. 291 of 1970) as adopted by Section 75 of the Irish Aviation Authority Act 1993 (No. 29 of 1993). Details from this drawing are reproduced on Development Plan Index Map.

 

This safeguarding policy must be read in conjunction with Drawing ‘Safeguarding Map for Weston Aerodrome’ (to a scale of 1/10560) prepared by GPS Surveying Ltd. of Newmarket House, Co. Cork, dated 10 January 2003.  This aerodrome safeguarding map has been lodged by Weston Aerodrome with South Dublin County Council in pursuance of a direction issued by the Irish Aviation Authority (NR T.02 Issue 4 Date 02.09.04 – Aerodrome Safeguarding Maps) in pursuance of Articles 8 and 23 of the Irish Aviation Authority (Aerodromes and Visual Aids) Order, 2000, (S.I. No. 334 of 2000).  Details from this drawing are reproduced on the Development Plan Index Map.’

Where the Weston Aerodrome Safeguarding area overlaps with that of Casement Aerodrome, Baldonnell the more stringent requirement of the two shall apply. In most instances this would be the criteria relevant to Casement Aerodrome (See Schedule 4 of this document).

 

Approach Zone

 

(a)           Solid Red Area.

               Generally, no buildings, overhead lines or structures to be erected. Permission may be granted for small individual buildings, or structures or additions to existing buildings provided their highest point does not penetrate the approach surface as defined below.

 

(b)           Hatched Red Area.

               The maximum elevation of any building, overhead line or structure should not penetrate the approach surface as defined below.

NOTE: The approach surface is a plane surface commencing at ground level at the runway ends as detailed on drawing no. EDAX 9702/CO9 Drawing ‘Safeguarding Map for Weston Aerodrome’ dated 10 January 2003 and rising upwards and outwards within the Approach Zone boundaries at a gradient of 4 per cent (slope of 1:25).’

Within the Approach Zone all planning applications for buildings, overhead lines or structures with the potential to infringe the approach surface will be referred to the Irish Aviation Authority. The I.A.A. would normally object to any obstacle extending above a 1.2% gradient from the flight strip on a runway approach.

 

Inner Horizontal Zone and Conical Zone Restricted Area excluding the Approach Zone.

 

There are variable restrictions on height of buildings, overhead lines or structures depending on location within the Inner Horizontal Zone. The highest point of any structure should not penetrate the transitional surface as defined below.

 

NOTE: The transitional surface is a plane surface commencing at ground level at the runway side boundaries and rising upwards and outwards at a gradient of 20 per cent (slope of 1:5), to an elevation of 91.3m OD where it meets the Inner Horizontal Surface (at 45m above the aerodrome elevation), which extends horizontally at that level, to a radius of 2.5km.

 

Beyond the Inner Horizontal Zone is a Conical Zone which extends to a further 1,100m on all sides, with varying height restrictions rising (at 1 in 20) from 91.3m OD to 146.3m OD.

 

Within the Inner Zone all planning applications for buildings, overhead lines or structures within 265m of the runway centreline (or extended centreline), or exceeding 25 metres in height (as measured on site) will be referred to the Irish Aviation Authority.

Noise

The approximate boundary of the zone in which aircraft noise may be significant is indicated by a blue solid line on Drawing No. EDAX 9702/CO9 Drawing Safeguarding Map for Weston Aerodrome’ dated 10 January 2003. Noise is not uniform throughout the zone. It is more significant in the vicinity of the runway thresholds and in the line of runways. Buildings likely to be most affected by noise include residences, schools, hospitals, and conference centres. The noise contour indicated represents a level of 57dB(A) Leq16.

Siting Of Industrial Development/ Refuse Dumps

 

Industrial development in the vicinity of the aerodrome should not involve processes which produce atmospheric obscuration, or attract bird concentrations, which might interfere with aircraft operations.

 

Proposed refuse dumps within a radius of 8km of the centre of the aerodrome should be notified to the Irish Aviation Authority.

 

Criteria for the Protection of Radio Facilities and Radio Navaids from Interference

 

(1)           Industrial processes which involve radio frequency energy, e.g. induction furnaces, radio frequency heating, radio frequency welding, transmission masts,

               etc., should not cause interference to radio navaids.

(2)           ESB or Eircom overhead lines serving the Aerodrome or Navaid sites should be buried underground for a minimum distance of 100 metres, from the edge of the runway strip or from the radio installations NDB/ DME facility, VHF Communications Antennae, etc. - at the aerodrome, whichever is the greater. Overhead lines beyond 100m should approach from a direction perpendicular to the runway centreline and be referred to the Irish Aviation Authority for assessment.

 

General

 

Detailed criteria relating to the subject of Obstacle Limitation Surfaces appropriate to various classifications of airport runways are contained in Annex 14 to the Convention on International Civil Aviation, as published by the International Civil Aviation Organisation.’

 

 

 

Reason

In order to reflect amendments recommended on behalf of Weston Airport to update the information contained in Schedule 5.

 

 

Recommendation

That the amendment be adopted.