Tree survey and Constrains Plan
A qualified arboriculturist will undertake a survey of the existing tree stock recorded features such as species, height, canopy spread, stem diameter and physiological and structural condition.
This information is then presented on a Tree Constraints Plan (TCP); a scaled drawing showing the position of the trees, their canopy spreads and Root Protection Areas (minimal rooting zone required to sustain the tree based on their steam/trunk diameter). The TCP is supplemented by a Tree Survey Schedule; a table which includes the details of each tree.
The tree survey should be undertaken early in the design process so that any development design can be informed by the constraints posed by the trees, thereby creating a more arboriculturally sustainable proposal and avoiding the need for costly re-designs later in the design process.
Arboricultural Impact Assessment (AIA)
Where a development has the potential to impact trees, the local planning authority will request an AIA is prepared to assess the potential impacts of the development on the existing trees and how the trees may impact on the development.
The AIA often forms part of the Local Authority’s validation checklist for planning applications near trees. Factors considered as part of the assessment include tree loss, tree pruning, Root Protection Area (RPA) encroachment, shading and future pressure posed to trees as a result of the new development.
As part of the AIA, a Tree Retention Plan (TRP) is produced. This is where the TCP is overlaid onto the development proposals and any tree losses and conflicts clearly illustrated in plan form. The TCP and TRP provide a clear graphical representation of before and after development, illustrating how trees have been incorporated into the development and those which require removal.
Arboricultural Method Statement (AMS)
Required to either accompany a planning application or as part of a planning condition. The AMS sets out how the trees highlighted for retention will be protected during construction and operation of the development. Protection measures may include fencing, ground protection and/or specialist construction techniques. The AMS will also set out any further requirements for arboricultural supervision.
Tree Protection Plan (TPP)
A key part of the AMS is the Tree Protection Plan (TPP). This is the based on the TRP but with the addition of the tree protection measures. The TPP, when read in conjunction with the AMS, provides in detail, the steps required to be undertaken by contractors to ensure the protection of trees. Failure to abide by the AMS could result in planning enforcement action, or prosecution should the trees in question by protected by a Tree Preservation Order.
At Sylvan Southwest, we provide expert advice to guide you through the planning process, helping you achieve your development goals, whilst retaining and protecting those most valuable trees. Most successful and arboriculturally sustainable developments are achieved through collaboration, therefore at Sylvan Southwest we are keen to be an active part of the design team.