120.4
The airlines are burning $5m per month going around in curcles and dumping CO2 needlessly into the atmosphere.
It is true that the 4rd strip will save that BUT ... only for a while.
That is because, BAA will immediately over sell the slots as they have the existing ones. That means that a/c will soon start stacking again. UNLESS the CAA manage the slots and the delays with instructions to minimise the pollution, nothing will change.