I would like to create a vineyard on what is currently a grass field. A quick walk over of the grassland suggests it has been improved at some point but there is no records to prove this. The site would be 2 acres or below. And would sit next to a current vineyard over the hedge. The site is situated in a national park. Should I do an EIA screening or is it not required due to the size of the site? If it requires one how much time can I expect the application to take?