true the land is leased from a very friendly local farmer, if 29 Grass was to be removed there is the possibility for large problems.
currently 29 Tarmac (from memory) is subject to movement restrictions whereas 29 Grass is not; so in theory 29 Tarmac can currently be operated with no limitations - thats also not to mention the easier change over when a TD requests the grass
(although with the lack of flying at that place lately i doubt they would reach the quota anyway
)