<<DL: A planning decision ought to take account of the existing value of
trees on the site. This is why the trees should be categorised in the
context of the current land use (as explained in the 2005 version of BS 5837
but not in the 1991 version, which was not clear in this respect). The
proposed context should then be taken into account in order to identify the
constraints.>>
Hi David,
I think I agree....at least until your last point.
As I see it, the process falls neatly into three separate stages. What have
we got?, what will we have? And what is the difference?
Stage 1. An assessment of the trees in the current context. It is this
assessment that identifies the constraints and as suggested at 4.4.1.1 of
BS5837: 2012 should be made 'independently of any specific proposals for
development'.
(In this regard, the guidance at 4.4.2.2 that at this stage
'...trees.....should be assessed.....within the context of proposed
development' for me is problematic; because it is premature. This should
come at section 5)
Stage 2. A similar assessment of the trees in the proposed context.
Identifying all of the various positive and negative effects.
Stage 3. A comparison of the Stage 1 and Stage 2 assessments. The
difference between the two being the overall impact of the development on
trees. It is this evaluation that feeds into the planning process and
informs decisions.
Your last point seems to infer that the proposed context influences the
constraints, but it shouldn't because the constraints are set at Stage 1.
Regards
Glyn Thomas
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