GlennA said:
The difference is the first proposal was for the runway, apron and terminal area and the runway extension was to be on pilings. This bid is for the runway and apron on fill with a couple of culverts so Trellis won't turn into a cesspool.

For anyone intrested,Here is a simulation of the flow in Trellis Bay during tidal reversals with the proposed runway extension. Blue= 0 current