Lucas believes that the decision breaches European environment and local planning law. Outline permission was granted by Scottish ministers last December, after the council rejected it.
Earlier this year, the council granted five supplementary applications another 40ha of land (Planning, 4 September, p2). Lucas said a new environmental impact assessment should have been carried out.
An application agreed this week to plant maram grass to stabilise the dunes should also have had an impact assessment and a full council hearing, she said. A council spokesman described her remarks as unfounded and said its lawyers are looking at the comments.