They're piledriving for the new Ocean going container base, if you look across the river from the car-park by FPR you will see two platforms and just behind a big crane, it seems the whole area is on the same rock strata, it was noisy yesterday (Fri).
They have managed to drive eight piles in so far mainly without much noise so presumably softer ground. The intermittent banging over the last two days has pushed a couple of "difficult" piles in, presumably where the rock is harder.
They have said that noise will be limited to daytime so that those of us living nearby should not be disturbed too much. Mind you there are a lot more piles to go in!