Environmental Impact Statement (EIS) that proposed a 11.5 km four-lane Castlereagh Freeway between Pennant Hills Road and Lane Cove River at North Ryde, known as F2 Stage 1. In the proposal, the link to Epping Road at Marsfield, and the link to Fig Tree Bridge at Hunters Hill were abandoned.

Subsequently, a Commission of Inquiry on the 1989 proposal was set up and chaired by the commissioner John Woodward. In July 1990, the commissioner released