Building on Foundations of Sand!!

From Janet Wallace of EDDC via www.trinitymatters.co.uk

"EDDC observations yesterday were that there were significant periods during the discharge when the noise levels were not as loud and were fully compliant. These periods appeared to coincide with the discharge of sand into the lagoon, rather than coarser material. It is the sand which forms the majority of the fill due to come from now on."

So I take it from this that the pipeline noise will no longer be a problem as they are going to build the platform mainly of sand. Can this really be true? As far as I know, you need to have a good mix of aggregate sizes to create a firm bound surface after compaction. Perhaps they will use piling for the store foundations, but how will this affect any potential hotel and residential development?

What do those who know more about these things think?

Pumping has once again started, and it does not appear that there have been any changes to the sound proofing around the pipe. Surely at 90dB this is excessive even for daytime operation. What is it like down there?