To ask the Scottish Executive how the authorities in Scotland exercise their responsibilities under the EU Habitats Directive in respect of (a) the assessment of plans or projects likely to have an effect on European wildlife sites and (b) the consideration of alternative solutions and of imperative reasons of over-riding public interest relating to plans or projects assessed as likely to have an adverse impact on the integrity of European wildlife sites, in instances when a plan or project is of a type not specified by regulations 53A to 85 of the Conservation (Natural Habitats, &c.)