can an IG pool be built under grade 3 inches and graded so that water from rains to not get in? the pb seems to think it will be fine because it's "almost level" and it's in a yard that is surrounded by block wall. we can get some heavy rains in the monsoons in AZ and some houses flooded last year. i'm hoping that the pb knows what he is talking about. he says that the small amount of water that is collect in that area should go where it needs to if i make a small gully in that area. i have 3 1/2 feet to work with for the growing bed area from the block wall, where i plan on growing desert plants most likely. then there will be a 16" coping (coping only pool). having probs posting pics and it doesn't seem to show justice in pics. i took a level and used it to figure out how much room we'd have about the boards the install to form the pool. if i understood correctly, there is 3" of concrete and marbella above that form board? the marbella is 1 3/4". i think the pb is going a bit crazy with me because i'm not confident in the plan and maybe i don't understand it well enough. i worry about grading and i wonder if i'm making a bigger deal of it than i need to due to how it makes sense to me. thanku!!