A large proportion of the arisings are of the low density, branches and brash kind, and consequently many contractors use a chipper for convenience of handling the volume of material to be removed off site.

While the caveats (below) on the storage and handling of green wood chips apply, if handled carefully chips from arboricultural arisings can be either dried as chips, or used, in appropriate equipment as green chips.

There are potential problems with composting in heaps of chips that can lead to loss of biomass and raised temperatures that can cause spontaneous ignition. 

It is therefore advised that heaps of chips not be constructed greater than 10 m high to prevent excessive heat build up. If managed carefully, however, the heat from composting can help to drive moisture out from a pile of chips.

Storage of wood chips with a high moisture content can also lead to formation of moulds which can lead to health problems as a result of spores, and it is recommended that a P3 filter dust mask be used when working with stores or deliveries of chips.

It is important that if a tree surgeon or arboricultural contractor intends to supply wood chips for combustion or gasification (s)he invests in an appropriate chipper that produces suitable output.

The upcoming standard for solid biofuels is EN335, encompasses specifications for size distribution, including slivers which can cause bridging and blockages in fuel feed systems.