Controlled material placement uses a material slinger's high-speed conveyor to launch material to the target area in a controlled stream, rather than dumping it. The placement is precise, it needs far less handling by hand, and it can reach areas that are otherwise hard to access.
It fits the way OE works: excavations that start as small and neat as possible, and restoration that leaves the ground looking as good or better than before, including flagstone, interlocking brick, patio stone, wooden decking and sod.
Ontario municipal note: municipalities set how backfill is placed. In Toronto, for example, specification TS 4.60 calls for granular backfill under pavement in lifts no thicker than 150 mm, each compacted to at least 98% of standard Proctor maximum dry density, with pipe bedding and cover compacted to at least 98% and free of reclaimed asphalt. In boulevards, native material or Granular B Type II is placed in lifts up to 200 mm and compacted to 95%, and unshrinkable fill is not allowed in a Tree Protection Zone.