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<DIV><FONT size=2 face=Arial>I wouldn't condemn a tree just because of risk that
something might/will happen sometime in the future based on species alone. It
has to demonstrate an imminent risk of failure now. </FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>That said, I wouldn't recommend planting them if I
know of these characteristics, subject to other goals for planting that might be
more important at the time.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>If I want to remove one because of species, say a
large Manitoba maple because it's an invasive species, I will remove it on that
basis not future presumed risk, even if it has future risk of failure too
but isn't imminent now. If your municipality doesn't make allowances for
invasive species or other reasons for removal than imminent hazard, then it
might get more complicated.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Stephen Smith<BR>Urban Forest Associates
Inc.<BR>Urban Forestry and Ecological Restoration<BR><A
href="http://www.ufora.ca">www.ufora.ca</A></FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=vince@rutterurbanforestry.ca
href="mailto:vince@rutterurbanforestry.ca">Vince Rutter</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=canufnet@list.web.net
href="mailto:canufnet@list.web.net">Canadian Urban Forest Network</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, June 16, 2010 9:52
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [CANUFNET] hybrid poplar tree
hazard</DIV>
<DIV><BR></DIV><BR clear=all>A client's neighbour owns two large hybrid poplar
(similar to cottonwood) trees that overhang his property. They are
healthy vigourous trees, both with many codominant stems and are quite large
(2 metre DBH). That's pretty big for here in Thunder Bay! Over the
past several years there have been many occasions where branches have snapped
and fallen which is typical of the species. The branches are anywhere
from 2 inches to 5 or 6 in diameter. They are truly concerned about the
tree and would like to compel the owners to take action.<BR>At best, we could
clean the crown, reduce long branches and support included branch connections
by cabling but I don't feel that would greatly reduce the risk of occasional
limb breakage. That said, have any of you condemned a tree based on its
species characteristics like these poplars? <BR>This problem comes up
fairly frequently here and it usually leads to tree removal but in this case
all parties involved can't come to an agreement. <BR><BR>Any insight
would be greatly appreciated.<BR>
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-- <BR>Vince Rutter, RPF<BR>ISA Certified Arborist<BR><A
href="http://www.rutterurbanforestry.ca">www.rutterurbanforestry.ca</A><BR>807-627-6201<BR></BLOCKQUOTE></BODY></HTML>