I have a 20 X 30 foot rectangular area behind my house where I plan to put in a concrete paver patio. The home is newly built. I had a contractor excavate 6 inches and then put in a truckload of sand. I think I got the wrong type of sand. It is like sea sand. I later read that I should have used gravel for the base. Will I have to get rid of the sand and start over with gravel, or can I try to compact the sand and place the pavers? I would appreciate any help. It would be a pain to have to remove the sand, but I will try to do whatever is best.