@phykell all the above is great advice. Just to add, the deep bore report is great for water extraction but not much use for a pool, hence the 5m bores. With a above ground pool the mass (weight) of the pool and water are very important but with an in ground pool it’s very different, the mass off the soil you remove is generally much less than the big concrete tank and fill with water. When you empty the pool the ground wants to push the walls in and any water in the first few metres wants to float your pool out of the ground. If you have a high water table you will be looking at anchoring the pool down rather than supporting it.