Below, is an unedited email from Kate Pitt, Audience Development Manager and Head of Landscape and Gardens, English Heritage, received 22nd September 2017.
‘There are 1837 trees in Marble Hill Park. We are proposing to remove 347, of which 326 come from the woodland quarters. The 347 tree removals equate to 18.9% of the tree stock. We will be planting 401 new trees, this is a 2.2% increase in the number of trees on site. It is estimated that after all the proposed tree removals and the proposed re-planting programme is completed, tree cover will extend by 0.5 ha to 42% of the site.
The tree survey exercise has focused on the proposed areas of park improvements and identified 66 (sixty six) individual specimen trees and 24 (twenty four) groups of trees. Within these groups, 234 (two hundred and thirty four) trees were considered worthy of note. The development works focus on three areas of the park; improving the existing café facilities within the stable block area; improving the play facilities adjacent to the stable block and reinstating the landscaping around Marble Hill House and down to the River Thames.
Improvements to the café facilities at the stable block will require the removal of 3 (three) trees, an additional group of 9 (nine)trees to the right of the café , and 1 (one) low grade tree to the south of the café will be removed to improve the growing conditions for the remaining trees within the group. Next to the house 3 (three) trees are proposed for removal and amongst the Western avenue towards the Thames a further 4 (four) trees are proposed for removal.
There are 609 trees within the four woodland quarters south of the house of these 326 are proposed for removal to reduce the significant overcrowding and enable the remaining and newly planted trees to grow under better light conditions and the generation of a ground flora which will improve biodiversity.
Improvements to the play area adjacent to the stable block do not require any trees to be removed as a direct result of the works. One poor quality tree (Sambucus nigra) will be removed due to its condition. The proposed play equipment is to be positioned to avoid tree protection zones.
The landscape reinstatement works to the four quarters around Marble Hill House and part of the grounds down towards the River Thames will require the management of these areas through the removal of a number of trees, the coppicing of trees, the retention of trees and the replanting of trees.
The south-east quadrant (Group 7) will require the removal of 88 (eighty eight) trees, the retention of 73 (seventy three) trees and the coppicing of 44 (forty four) trees.
The north-east quadrant (Group 8) will require the removal of 74 (seventy four) trees, the retention of 21 (twenty one) trees and the coppicing of 7 (seven) trees. (One tree has been removed since the original survey).
The north-west quadrant (Group 9) will require the removal of 86 (eighty six) trees, the retention of 55 (fifty five) trees and the coppicing of 15 (fifteen) trees. (One tree has been removed since the original survey and one was a duplicate tree).
The south-west quadrant (Group 10) will require the removal of 83 (eight three) trees, the retention of 32 (thirty two) trees and the coppicing of 31 (thirty one) trees.
Five trees are recommended for removal for reasons of sound arboricultural management regardless of any development proposals. Therefore the removal of these poor quality trees should not have a bearing on this development proposal.’