HomeMy WebLinkAbout2002-11-12 Arborist Email Re Tree Inventory & Landscape PlanKris Danielson
From: K.D. Widi
Sent: Tuesday November 12.2OO28:16AM
To' kdanielson@cityofoakparkheights.com
Sub CanturyPower - Trea|nventoxry & Landscape Plan
Kris -
There are continuing issues with the tree inventory tree
removal and replacement calculations for the Centur Power pro
After receivin a new version of the tree inventor map and list of
trees from Alan Kretman, Ja Johnson and I visited the site on
Thursda Nov. 7th to tr to determine the actual location of the
erosion control fencin and look at the trees in and near the
construction area. I wanted to determine which trees within the
clear limits had been removed and which were still remaining inor
near the clearing limits and would not survive the construction
impacts. We found aowe tried to match the existing trees to the
tree inventory map that we were having a difficult time, similar to
the problems | had with verifying the first tree inventory. Some
trees were there which had not been indicated on the plan, some trees
indicated on the plan could not be found and the clearing limits on
the new map did not match the work done onsite. VVe drew the
appropriate limits and also the location of trees found in and near
the construction area. Based on our observations Nov. 7th.|have
made changes to the tree removal and replacement calculations made bv
Alan Kretman the landscape architect responsible forthe tree
inventory list, map and landscape plan. At this point, adding
additional trees found in and near the construction zone, and
subtracting trees removed for construction and those which are
remaining but will die from construction impacts is probably the
most efficient and accurate calculation which can be made using the
existing tree inventory information. By this procedure, |added:
1.32 diameter inches of trees which were found at the edge ofthe
clearing limits, but which were not on the tree inventory,
2.34 diameter inches of trees which were found (not mn the original
inventory) and retained within the clearing |imite, but which will
die due to construction impacts,
3. 75 diameter inches of trees on the original inventory which were
retained within the clearing limits but which will die due to
construction impacts,
4.36 diameter inches of trees which were originally to have been
removed, but which were saved due toa change in the slope tothe
west ofthe addition, and
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ina|hdesi hmbeooved
The resulting requirement for ere are
subtracted and a1O96credit is included for sav >5O96of trees on
the site, =29Oinches
Re-doing the tree inventory at this point would onl be
accurate for trees remaining within the protected area, not trees
removed in the clearing operation, and | recommend that we use the
information that has already been submitted. By using the above
method, we could also save the City and the developer time and money
spent to re-do and re-check the tree inventory
Because of changes iothe grading and resultant ohangein
tree removal and slope, the current |andoaoe plan for the proj
will not work and needs tobere'done. This should be finished and
at City Hall no later than Fri. Nov. 22nd. After that time final
tree replacement calculations can be made and additional planting or
"cash in lieu of planting" can be requested from Century Power. Any
planting or receipt of cash payment should be approved before final
funds are released to the developer upon project completion.
In the future I would also suggest, given the problems we
have had with this project, that building permits not be issued until
all the required information has been submitted to City Hall and
accepted.
Kathy Widin
Arborist
City of oak Park Heights