Hello. I have a question about leveling the ground for the pool. The pool will be on a small slope. I was planning on digging the high end out to match the low, but this is not possible due to the sprinkler system being in the way. I'm going to have to add dirt to bring up the low side. My plan was to build a small retaining wall on the low end and filling it with dirt then compacting it down. I will only need about 4 inches of fill. What do you guys think about this or recommend I should do?