Just finished this job after another sub bowed out. Pool was in place prior to us starting. Slope was in excess of 1:1. Only had 7' from edge of pool to property line on back wall. Wall was keystone angle standard and 14 courses tall (10.5'). Dug out and compacted base material to subsoil. Geo engineer ok'd base. Base level ended up being the 10' wide(yes went beyond property line but was within limits when wall appeared out of ground after final grading), dug a 12" deep by 30" wide sub base for first course to lay on. Fabric every 3 courses (6' wide per engineering). Filled totally with clean 57's...no soils. Front of buried 4 base courses was compacted soils to form the required wedge. Needed mini ex for 2 days to make initial cuts. Built plywood ramp to slide stone down for backfill. Brought stone from driveway to ramp with new holland skid steer. From that point all other work done by hand. Final tally 180 tons of 57's, 750 standard units at 100 pounds each (37.5 tons) and a few caps and fence posts. 5 men 8 days from start to final cleanup. Don't you hate winter work...Production slows down, but cash flow is a priority.