Very high quality work. Showed up on time initially, but subsequently were generally not sure when we would next see the workers. The Contractor gave time estimates based on time required for the job, not calendar days required. This was confusing to us since we were very anxious to complete the job. However, some of the delay was our fault because of design changes and additional work. One problem occurred when a worker failed to waterproof the retaining wall all the way to the top of the wall. The first time I watered my fruit trees on the bank above the wall, a significant amount of water leaked through the wall. I brought this to the attention of the contractor and he immediately without quibbling had workers remove the concrete water trough at the top of the wall that they had poured, excavate the wall down to the waterproofed part of the wall (about 2 '), and waterproof the rest of the wall all the way to the top. The water trough measured 4" X 12" X 85'. They then replaced the water trough with a slightly wider water trough 4" X 16" X 85'. This alone convinced I had hired a good contractor. Note: I have already contacted the contractor for bids for short stub block walls by a side gate and for steps to the top the retaining wall.