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<DIV><FONT size=2 face=Arial>I just condemned 5 C. poplars this week as
they were right beside a house, 80cm DBH. 50% dead now and more coming. We can
only manage the risk of others prior bad choices as best we can. I
retain them in parks and forests where they can do little
harm.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV>Stephen Smith<BR>Urban Forest Associates Inc.<BR>Urban Forestry and
Ecological Restoration<BR><A href="http://www.ufora.ca">www.ufora.ca</A></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px"
dir=ltr>
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=kmenounos@city.pg.bc.ca
href="mailto:kmenounos@city.pg.bc.ca">Menounos, Kim</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 2:22
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [CANUFNET] hybrid poplar
tree hazard</DIV>
<DIV><BR></DIV>
<DIV class=WordSection1>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">We
are constantly in the same philosophical debate about Cottonwood trees in a
local park. The trees are very large (same latitude as Thunder Bay!) and old.
There are no residents close by, so it’s a much lower risk.
<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">The
reason I am weighing in is just to mention that these trees appear to get to a
point/age when their limbs become a hazard from falling. It isn’t predictable,
ie. only after a windstorm, and they are huge! We can manage this risk because
their benefit to the local riparian ecosystem is important and the visitors to
the park are less frequent. However, I personally would not want to bear the
risk of one of these trees on my private property for this very reason! The
context has to be part of the discussion. Is the property/tree owner going to
be able to predict when a large limb is going to fall (and they will continue
to fall because of the species) and be able to mitigate the hazard by having
an arborist in in time to keep someone from being hurt? <o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Kim
Menounos, RPF<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">City
of Prince George<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><o:p> </o:p></SPAN></P>
<DIV>
<DIV
style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<P class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt">From:</SPAN></B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt">
canufnet-bounces@list.web.net [mailto:canufnet-bounces@list.web.net] <B>On
Behalf Of </B>Stephen Smith<BR><B>Sent:</B> June 16, 2010 9:28
AM<BR><B>To:</B> Canadian Urban Forest Network<BR><B>Subject:</B> Re:
[CANUFNET] hybrid poplar tree hazard<o:p></o:p></SPAN></P></DIV></DIV>
<P class=MsoNormal><o:p> </o:p></P>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">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. </SPAN><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal> <o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">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.</SPAN><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal> <o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">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.</SPAN><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal> <o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">Stephen
Smith<BR>Urban Forest Associates Inc.<BR>Urban Forestry and Ecological
Restoration<BR><A
href="http://www.ufora.ca">www.ufora.ca</A></SPAN><o:p></o:p></P></DIV>
<BLOCKQUOTE
style="BORDER-BOTTOM: medium none; BORDER-LEFT: black 1.5pt solid; PADDING-BOTTOM: 0cm; MARGIN: 5pt 0cm 5pt 3.75pt; PADDING-LEFT: 4pt; PADDING-RIGHT: 0cm; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0cm">
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">----- Original
Message ----- <o:p></o:p></SPAN></P></DIV>
<DIV>
<P style="BACKGROUND: #e4e4e4" class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">From:</SPAN></B><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt"> <A
title=vince@rutterurbanforestry.ca
href="mailto:vince@rutterurbanforestry.ca">Vince Rutter</A>
<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">To:</SPAN></B><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt"> <A
title=canufnet@list.web.net href="mailto:canufnet@list.web.net">Canadian
Urban Forest Network</A> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">Sent:</SPAN></B><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt"> Wednesday, June
16, 2010 9:52 AM<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">Subject:</SPAN></B><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt"> [CANUFNET]
hybrid poplar tree hazard<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><o:p> </o:p></P></DIV>
<P class=MsoNormal><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.<o:p></o:p></P>
<P class=MsoNormal>-- <BR>Vince Rutter, RPF<BR>ISA Certified Arborist<BR><A
href="http://www.rutterurbanforestry.ca">www.rutterurbanforestry.ca</A><BR>807-627-6201<o:p></o:p></P></BLOCKQUOTE></DIV></BLOCKQUOTE></BODY></HTML>