d. Exact location on map and location of geographical co-ordinates to the nearest second

The nominated property is the St Kilda archipelago and the surrounding sea, lying 64 km west of North Uist in the Outer Hebrides, the central point is located at 57º 50’ N, 08º34’W (NGR –NA095995). The area proposed for inscription is contained within the square with co-ordinates: 57º54‘36”N, 08º42‘00”W; 57º46‘00”N, 08º42‘00”W; 57º46‘00”N, 08º25‘42”W; 57º54‘36”N, 08º25‘42”W.

e. Maps and/or plans showing boundary of area proposed for inscription and of any buffer zone

f. Area of site proposed for inscription (ha) and proposed buffer zone (ha) if any

The total area of the proposed site measures 24,201.4ha, comprising a land area of the St Kilda archipelago above Mean High Water Spring mark of 854.6ha, and a sea area measured from Mean High Water Spring mark out to the boundary of the site of 23,346.8ha.

Paragraph 17 of the Operational Guidelines for the Implementation of the World Heritage Convention makes provision for the identification of a buffer zone to protect World Heritage Sites from threats beyond their boundaries. An independent assessment of potential risks to the nominated site identified a number of possible threats from outside the site boundary. Careful consideration was given by the UK authorities to whether the identification of a buffer zone would be an effective tool in managing such risks. The physical cultural heritage features of the nominated site are restricted to the terrestrial areas and therefore the marine areas of the site constitute, in effect, a buffer zone for these areas. Through the appropriate existing measures of protection any risks are minimised by the measures outlined in the Management Plan, and by the statutory protection offered by the area's designation as a National Nature Reserve and Special Protection Area and prospective designations of Special Area of Conservation and (marine) Special Protection Area. The natural heritage and landscape properties of the site are also afforded strong protection through the UK's statutory planning system that directs statutory policies in relation to Scotland's coasts. This is further complemented by the powers and duties vested in Scottish Natural Heritage, the Government's statutory advisor on nature conservation and the UK Government's commitment to carry out a Strategic Environmental Assessment in advance of any developments (soon to be enshrined in statute). The whole nominated site also lies completely within sites separately identified for protection under European Law (The ‘Birds Directive’ and ’Habitats Directive’) for their natural heritage value which affords protection against any action, within and outwith the site, that may have an adverse effect on the features of the site. This range of conservation designations ensures statutory protection for a greater area than any possible buffer zone outwith the nominated site, and protects its setting adequately. The conclusion was that a buffer zone would not add to the protection afforded by other designations and existing regulatory regimes, reinforced by advocacy to respect the site. Further information on the range of protective designations and actions is provided elsewhere in the nomination document and in the Management Plan.