Everyone were expecting this result after some flooding at North Pattaya. The sewers tubes are clogged and the water spills out to the beach, draining the new sand with it. You cannot fix the beach without fixing the flood.
That is what you can see in these pictures the rehabilitation is still not finished that part of the beach is gone with the first episode of rain.
The engineering behind this project is made by clueless people.
Or maybe it is just a pretext to suck the people’s taxes into some fat cats pockets?