Conservative London Assembly member Andrew Boff said it still wasn't clear where the cash was coming from and who's paying for the transformation of the stadium.
Andrew Boff added: "We still don't really know, but chances are we're all contributing. Taxpayers shouldn't be paying for Premiership football clubs.
"The £154 million has to come from an already stretched LLDC budget and the knock-on effect is that the rest of the transformation of the park - the really important stuff such as housing - will suffer as a result.
"Only by ditching the requirement for the athletics track, are we likely to see more bids from the private sector, for a proper football stadium rather than the hybrid fudge we currently have."
More top news
Paramedics were on standby outside the police cordon as armed officers stood by the property.
A team of researchers has taken samples from the ten busiest London Underground lines to work out which are the dirtiest.
The action comes on top of an emergency timetable which has seen hundreds of trains a day being axed.