This Act shall apply to all projects which may involve significant environmental effects, whether they are on land, in Icelandic territorial waters or air space, or in Icelandic pollution zone (not defined). The objectives of this Act are: a) to ensure that, before consent is granted for a project which may, due to its location, the activities which it will involve, its nature or extent, have significant effects on the environment, an assessment of the environmental impact of the project is carr