Arboriculture Services
We offer a complete package of Arboricultural Services
WHAT WE OFFER
Tree Condition Survey
Dangerous Trees
The Roads Act 1993 requires owners or occupiers of land to take all reasonable steps to ensure that trees or other vegetation on their land are not a hazard to persons using a public road. Local authorities may issue notices to landowners requesting them to maintain or cut back trees or hedges.
Tree safety management is a matter of limiting the risk of harm from tree failure while maintaining the benefits conferred by trees. Although it may seem counter intuitive, the condition of trees should not be the first consideration. Instead, tree managers should consider first the usage of the land on which the trees stand, and in turn, this will inform the process of assessing the trees.
Basal Decay
Quantified Tree Risk Assessment (QTRA)
The Quantified Tree RiskAssessment (QTRA) method applies established and accepted risk management principles to tree safety.
The method moves the management of tree safety away from labelling trees as either ‘safe’ or ‘unsafe’ and thereby away from requiring definitive judgements from either tree assessors or tree managers.
Instead, QTRA quantifies the risk of harm from tree failure in a way that enables tree managers to balance safety with tree values and operate to predetermined limits of tolerable or acceptable risk.
By quantifying the risk from tree failure, QTRA enables a tree owner to manage the risk in accordance with widely applied and internationally recognised levels of risk tolerance. QTRA further provides a decision-making framework which considers the balance between the benefits provided by trees, levels of risk they pose, and costs of risk management.
GEOTREE Ltd are licensed users of the QTRA System and are able to undertake tree surveys which quantify risk. A figure representing the probability of significant harm occurring is included within the QTRA Tree Report.
This type of tree survey is often favoured by those responsible for a very large tree stock.
Ash Dieback (Hymenoscyphus fraxineus)
Specialist Decay Detection Tree Survey
This type of tree survey assesses the extent of decay deep within the tree.
GEOTREE Ltd uses specialist tree survey equipment including a resistograph, and an ultrasound Picus Tomograph machine that can be used to undertake a detailed Decay Detection Tree Survey.
