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Tree surgery and landscaping residue

The residue from tree surgery and other park and garden maintenance work (arboricultural arisings) is potentially suitable for woodfuel.

In Scotland, the Aboricultural Arisings Scotland Study 201 [PDF], commissioned by Forestry Commission Scotland, estimated that just over 700,000 tonnes of arboricultural arisings are produced in Scotland each year. However, much of this consists of green material which is unlikely to be suitable for woodfuel, and some is already used for woodfuel, for other products, or is composted.

Arboricultural arisings of suitable quality for woodfuel could make a valuable contribution to local woodfuel markets, particularly for local authorities. Local authorities carry out a large number of tree surgery operations but may not have enough woodland resources to fuel their own woodfuel installations - arisings could supplement their supply. Forestry Commission Scotland are currently examining possible ways to utilise this resource.

Arboricultural arisings can have a high moisture and bark content, generating a large amount of ash when burned. This may make some arisings unsuitable for some wood fuel systems, especially domestic and small scale ones. They also require careful screening for foreign particles such as stones and wire.

Untreated wood, such as arboricultural arisings, is exempt from the Waste Incineration Directive (WID), and can be handled in the same way as other virgin wood.

SEPA provides guidance on how waste is defined in the directive.