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<p>Thanks Jim for the excellent advice. <br>
</p>
<p>Now we just have to get the field crews, bean counters, and
bureaucrats on board, but it can be done, as you have so often
shown. It would be great if the landscape architects would adopt
these ideas and specify them regularly instead of the often all
too dubious soil mixes of unknown provenance. <br>
</p>
<pre class="moz-signature" cols="72">On Behalf of Dunster and Associates Environmental Consultants Ltd.
Dr. Julian A Dunster R.P.F., R.P.P.., M.C.I.P., ISA Certified Arborist,
ASCA Registered Consulting Arborist # 378,
ISA Tree Risk Assessment Qualified
Honourary Life Member ISA + PNWISA
North American distributor for Rinntech
<a class="moz-txt-link-abbreviated" href="http://www.dunster.ca">www.dunster.ca</a>
<a class="moz-txt-link-abbreviated" href="http://www.treelaw.info">www.treelaw.info</a>
<a class="moz-txt-link-abbreviated" href="http://www.rinntech.info">www.rinntech.info</a>
</pre>
<div class="moz-cite-prefix">On Sun/10/10/2021 2:00 PM, james urban
via CANUFNET wrote:<br>
</div>
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<p class="MsoNormal"><span style="font-family: Arial,
sans-serif;" class="">To my Canadian Friends:<o:p class=""></o:p></span></p>
<p class="MsoNormal"><span style="font-family: Arial, sans-serif;"
class="">Stock piling and Reusing soil does maintain a
serviceable soil for urban trees. It has been the standard for
as long as I
have been in the profession. Ecological perfection is not the
goal just
reasonably good tree growth which we see in these soils. Note
that I will
not using the term “topsoil”, a highly abused term. I will
use organic soil referring to the
layer that was harvested from the top of the soil profile and
with a higher
organic content. 2-3% dry weight is fine for trees and wordy
shrubs.</span></p>
<p class="MsoNormal"><span style="font-family: Arial, sans-serif;"
class="">The number one issue is stopping the soil
screening process, particularly damaging in the silt soils in
southern Ontario.
The other issues are how the sub grade is prepared or abused,
how the organic
soil is spread and how deep and how it is compacted. Too often
the sub grade is
compacted and or graded with a smooth sub grade surface. Then
a thin layer of organic soil maybe 4-6
inches deep is spread to support grass and small shrubs. </span></p>
<p class="MsoNormal"><span style="font-family: Arial, sans-serif;"
class="">Solutions:
<o:p class=""></o:p></span></p>
<p class="MsoNormal"><font class="" face="Arial, sans-serif">Idea
one is too spread and or grade the last foot
of subsoil with a rough chunky surface. This
upper subsoil layer should not be compacted greater than
85-90%. It is difficult to control this idea since
the engineers write the grading specification.
Spread the unscreened organic soil at least a foot deep and to
the depth
of the rootball for a distance of at least 15 feet diameter at
each tree. Or
better, make the entire soil profile of organic soil the depth
of the root ball.
You can add compost to the surface but don’t overdo it below
4-6” deep. Preventing
compaction across the soil profile or loosening what is there
in a way that
keeps chunks and lumps in all the soil is critical. </font></p>
<p class="MsoNormal"><span style="font-family: Arial, sans-serif;"
class="">STOP using soil mixes! FULL STOP! If you have to buy
soil, get it from the
supplier’s soil pile of the soil, they collect to use in their
soil mixes. Do
not worry about the organic soil quality. These soils are all
local soils and
as-long-as they are brown or dark brown with the minimum soil
organic matter
and a pH that is appropriate for the plants.
In southern Ontario that will be a very high pH 7.5-8.5. The
tighter you make the soil spec the more
things will get screwed up and go south.
The project manager will reject the sample and testing
results. I
would just call your soil supplier and ask them for test
results from their recent
soil collections and use the numbers in those soils as the
basis for the spec. then widen out the windows of each
testing
parameter enough to accept just about any soil in southern
Ontario. Accept the roots, wood chunks, rocks, and
construction debris that will be in that pile. It is the
removal of debris that
kills the soil. A rebar or chunk or concrete or asphalt never
harmed a tree. I
have written specifications for all this for Toronto many
years ago but not
sure how the evolved after that My thinking has evolved on
that
specification. <o:p class=""></o:p></span></p>
<p class="MsoNormal"><span style="font-family: Arial, sans-serif;"
class="">Dealing with deep compaction is the most
difficult part. Do not use a roto tiller. Tillers never go
deep enough and are
very damaging to the soil, as bad as the soil screener. Use
the “soil profile
rebuilding” process developed by Susan Day at UBC in Vancouver
for sites where
there is soil even compacted subsoils. She has lots of
information and specifications
for this process. She just digs up the
soil profile with a backhoe and drops it back into place.
Your soils are organic enough, even your
subsoils, that you might not need to add compost but that
would be a project-by-project
decision.</span></p>
<p class="MsoNormal"><span style="font-family: Arial, sans-serif;"
class="">You might think that this will add to the cost
for all that organic soil. Actually,
unscreened soils from stockpile is much cheaper per Cubic
meter than soil mixes
currently being used. And you might say
well we would quickly use up all the soil available. If I
start with a native soil site there is
at least a foot or more of organic soil.
Most development projects will cover at least 75% of the site
with
buildings and paving. If you spread a
foot of the soil or even two feet of soil at the end of the
project you will the
net at 50-75% of the site area with left over organic soil to
use on another project. If you can stockpile the initial
organic soil
on site, the soil cost is free and it is just the installation
cost.</span></p>
<p class="MsoNormal"><span style="font-family: Arial, sans-serif;"
class="">This introduces a different type of soil problem,
that fact that there is typically not enough space to store
the needed soil. The organic soil needs to be harvested at
the
beginning of the project and re-spread at the very end. Here
is where you need the soil
supplier. Do not try to have them save
your soil for your job. It adds too much
complexity for very little or no gain.
Work with your supplier and establish a relationship to get
what you
need when you need it.</span></p>
<p class="MsoNormal"><span style="font-family: Arial, sans-serif;"
class="">Here are my summary recommendations:</span></p>
<blockquote style="margin: 0 0 0 40px; border: none; padding:
0px;" class="">
<p class="MsoListParagraphCxSpFirst"
style="text-indent:-.25in;mso-list:l0 level1 lfo1"><span
style="font-family: Arial, sans-serif;" class="">1.<span
style="font-stretch: normal; font-size: 7pt; line-height:
normal; font-family: "Times New Roman";"
class="">
</span></span><!--[endif]--><span style="font-family: Arial,
sans-serif;" class="">Where you can design the
site grading to preserve existing soil resources in place.<o:p
class=""></o:p></span></p>
<p class="MsoListParagraphCxSpMiddle"
style="text-indent:-.25in;mso-list:l0 level1 lfo1"><span
style="font-family: Arial, sans-serif;" class="">2.<span
style="font-stretch: normal; font-size: 7pt; line-height:
normal; font-family: "Times New Roman";"
class="">
</span></span><!--[endif]--><span style="font-family: Arial,
sans-serif;" class="">If you have the room
stockpile existing soil on site.<o:p class=""></o:p></span></p>
<p class="MsoListParagraphCxSpMiddle"
style="text-indent:-.25in;mso-list:l0 level1 lfo1"><span
style="font-family: Arial, sans-serif;" class="">3.<span
style="font-stretch: normal; font-size: 7pt; line-height:
normal; font-family: "Times New Roman";"
class="">
</span></span><!--[endif]--><span style="font-family: Arial,
sans-serif;" class="">Where possible use soil
profile rebuilding to prepare the subgrade and upper soil
profile layers.<o:p class=""></o:p></span></p>
<p class="MsoListParagraphCxSpMiddle"
style="text-indent:-.25in;mso-list:l0 level1 lfo1"><span
style="font-family: Arial, sans-serif;" class="">4.<span
style="font-stretch: normal; font-size: 7pt; line-height:
normal; font-family: "Times New Roman";"
class="">
</span></span><!--[endif]--><span style="font-family: Arial,
sans-serif;" class="">If you need additional
organic soil purchase unscreened soil.<o:p class=""></o:p></span></p>
<p class="MsoListParagraphCxSpMiddle"
style="text-indent:-.25in;mso-list:l0 level1 lfo1"><span
style="font-family: Arial, sans-serif;" class="">5.<span
style="font-stretch: normal; font-size: 7pt; line-height:
normal; font-family: "Times New Roman";"
class="">
</span></span><!--[endif]--><span style="font-family: Arial,
sans-serif;" class="">If the subgrade has been
graded and or compacted use soil profile rebuilding (SPR) to
prepare the
subgrade. Add more organic soil either
before you do SPR or after.<o:p class=""></o:p></span></p>
<p class="MsoListParagraphCxSpMiddle"
style="text-indent:-.25in;mso-list:l0 level1 lfo1"><span
style="font-family: Arial, sans-serif;" class="">6.<span
style="font-stretch: normal; font-size: 7pt; line-height:
normal; font-family: "Times New Roman";"
class="">
</span></span><!--[endif]--><span style="font-family: Arial,
sans-serif;" class="">If there is no soil on site
use the same methodology as above only with unscreened
imported soils.<o:p class=""></o:p></span></p>
<p class="MsoListParagraphCxSpMiddle"
style="text-indent:-.25in;mso-list:l0 level1 lfo1"><span
style="font-family: Arial, sans-serif;" class="">7.<span
style="font-stretch: normal; font-size: 7pt; line-height:
normal; font-family: "Times New Roman";"
class="">
</span></span><!--[endif]--><span style="font-family: Arial,
sans-serif;" class="">For soil over structure
take all the above principles and use them, but with greater
care to get very
chunky soils which will drain well. In southern
Ontario there is very little sandy loams.
You may have to resort to soil mixes to convince the
architect that the
soil will drain but there are ways to make it work it is
just more complex.<o:p class=""></o:p></span></p>
<p class="MsoListParagraphCxSpMiddle"
style="text-indent:-.25in;mso-list:l0 level1 lfo1"><span
style="font-family: Arial, sans-serif;" class="">8.<span
style="font-stretch: normal; font-size: 7pt; line-height:
normal; font-family: "Times New Roman";"
class="">
</span></span><!--[endif]--><span style="font-family: Arial,
sans-serif;" class="">For storm water
management soils, the above ideas do work but we have a long
way to go to
convince the engineers that unscreened soils will drain fast
enough. They actually do! I will leave that political
problem to some of the more interested people on this
thread.<o:p class=""></o:p></span></p>
<p class="MsoListParagraphCxSpMiddle"
style="text-indent:-.25in;mso-list:l0 level1 lfo1"><span
style="font-family: Arial, sans-serif;" class="">9.<span
style="font-stretch: normal; font-size: 7pt; line-height:
normal; font-family: "Times New Roman";"
class="">
</span></span><!--[endif]--><span style="font-family: Arial,
sans-serif;" class="">Fight hard to get rid of
overly complicated soil spects. There are
almost no soils in southern Ontario that will not work.
This will take quite a bit of education with
government people to move the bar on public projects.<o:p
class=""></o:p></span></p>
<p class="MsoListParagraphCxSpMiddle"
style="text-indent:-.25in;mso-list:l0 level1 lfo1"><span
style="font-family: Arial, sans-serif;" class="">10.<span
style="font-stretch: normal; font-size: 7pt; line-height:
normal; font-family: "Times New Roman";"
class=""> </span></span><!--[endif]--><span
style="font-family: Arial, sans-serif;" class="">Learn more
about soil and become proficient on the important parts
of soil that should be included in the discussion.
Rudimentary soil testing should be at the end
of the list. Subgrade conditions, soil samples with the
clumps
intact, should be the top of the process.
Touch, feel, smell the soil at the source supply before you
buy it.</span></p>
</blockquote>
<p class="MsoNormal"><span style="font-family: Arial, sans-serif;"
class="">Call or email me if you need to discuss further.<o:p
class=""></o:p></span></p>
<p class="MsoNormal"><span style="font-family: Arial, sans-serif;"
class="">Jim Urban, FASLA, ISA<o:p class=""></o:p></span></p>
<p class="MsoNormal"><span style="font-family: Arial, sans-serif;"
class="">410 693 9053<o:p class=""></o:p></span></p>
<p class="MsoNormal"><span style="font-family: Arial, sans-serif;"
class=""><a href="mailto:Jimtree123@gmail.com"
class="moz-txt-link-freetext" moz-do-not-send="true">Jimtree123@gmail.com</a><o:p
class=""></o:p></span></p>
<p class="MsoNormal"><span style="font-family: Arial, sans-serif;"
class=""> </span></p>
<p class="MsoNormal"><span style="font-family: Arial, sans-serif;"
class=""> </span></p>
<p class="MsoNormal"><span
style="font-family:"Arial",sans-serif" class=""> </span></p>
<!--EndFragment-->
<div><br class="">
<blockquote type="cite" class="">
<div class="">On Oct 5, 2021, at 1:55 PM, pwassenaer1022---
via CANUFNET <<a href="mailto:canufnet@list.web.net"
class="moz-txt-link-freetext" moz-do-not-send="true">canufnet@list.web.net</a>>
wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<meta charset="UTF-8" class="">
<div class="WordSection1" style="page: WordSection1;
caret-color: rgb(0, 0, 0); font-family: ArialMT;
font-size: 14px; font-style: normal; font-variant-caps:
normal; font-weight: normal; letter-spacing: normal;
text-align: start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; text-decoration: none;">
<div style="margin: 0cm; font-size: 11pt; font-family:
Calibri, sans-serif;" class="">Not in my experience but
perhaps others on this list could indicate if they have
seen it in their jurisdictions.<o:p class=""></o:p></div>
<div style="margin: 0cm; font-size: 11pt; font-family:
Calibri, sans-serif;" class=""><o:p class=""> </o:p></div>
<div style="margin: 0cm; font-size: 11pt; font-family:
Calibri, sans-serif;" class="">Philip<o:p class=""></o:p></div>
<div style="margin: 0cm; font-size: 11pt; font-family:
Calibri, sans-serif;" class=""><o:p class=""> </o:p></div>
<div style="margin: 0cm; font-size: 11pt; font-family:
Calibri, sans-serif;" class=""><b class=""><span
class="" lang="EN-US">Philip van Wassenaer, B.SC.,
MFC<o:p class=""></o:p></span></b></div>
<div style="margin: 0cm; font-size: 11pt; font-family:
Calibri, sans-serif;" class="">Urban Forest Innovations
Inc.<o:p class=""></o:p></div>
<div style="margin: 0cm; font-size: 11pt; font-family:
Calibri, sans-serif;" class="">1331 Northaven Drive<o:p
class=""></o:p></div>
<div style="margin: 0cm; font-size: 11pt; font-family:
Calibri, sans-serif;" class="">Mississauga ON L5G 4E8<o:p
class=""></o:p></div>
<div style="margin: 0cm; font-size: 11pt; font-family:
Calibri, sans-serif;" class=""><span class=""
lang="EN-US">Tel: (905) 274-1022<o:p class=""></o:p></span></div>
<div style="margin: 0cm; font-size: 11pt; font-family:
Calibri, sans-serif;" class=""><span class=""
lang="EN-US">Cell: (647) 221-3046<o:p class=""></o:p></span></div>
<div style="margin: 0cm; font-size: 11pt; font-family:
Calibri, sans-serif;" class=""><span class=""
lang="EN-US">Fax: (905) 274-2170<o:p class=""></o:p></span></div>
<div style="margin: 0cm; font-size: 11pt; font-family:
Calibri, sans-serif;" class=""><span style="color:
rgb(31, 73, 125);" class=""><span
id="cid:image002.jpg@01D7B9F0.B5ACA880"><image002.jpg></span><o:p
class=""></o:p></span></div>
<div style="margin: 0cm; font-size: 11pt; font-family:
Calibri, sans-serif;" class=""><span style="color:
rgb(31, 73, 125);" class=""><o:p class=""> </o:p></span></div>
<div style="margin: 0cm; font-size: 11pt; font-family:
Calibri, sans-serif;" class=""><span style="color:
rgb(31, 73, 125);" class=""><a
href="http://www.urbanforestinnovations.com/"
style="color: blue; text-decoration: underline;"
class="" moz-do-not-send="true">www.urbanforestinnovations.com</a><o:p
class=""></o:p></span></div>
<div style="margin: 0cm; font-size: 11pt; font-family:
Calibri, sans-serif;" class=""><o:p class=""> </o:p></div>
<div style="margin: 0cm; font-size: 11pt; font-family:
Calibri, sans-serif;" class=""><o:p class=""> </o:p></div>
<div style="margin: 0cm; font-size: 11pt; font-family:
Calibri, sans-serif;" class=""><o:p class=""> </o:p></div>
<div class="">
<div style="border-style: solid none none;
border-top-width: 1pt; border-top-color: rgb(225, 225,
225); padding: 3pt 0cm 0cm;" class="">
<div style="margin: 0cm; font-size: 11pt; font-family:
Calibri, sans-serif;" class=""><b class=""><span
class="" lang="EN-US">From:</span></b><span
class="" lang="EN-US"><span
class="Apple-converted-space"> </span>CANUFNET
<<a href="mailto:canufnet-bounces@list.web.net"
style="color: blue; text-decoration: underline;"
class="moz-txt-link-freetext"
moz-do-not-send="true">canufnet-bounces@list.web.net</a>><span
class="Apple-converted-space"> </span><b
class="">On Behalf Of<span
class="Apple-converted-space"> </span></b>Naomi
Zurcher via CANUFNET<br class="">
<b class="">Sent:</b><span
class="Apple-converted-space"> </span>October 5,
2021 2:31 AM<br class="">
<b class="">To:</b><span
class="Apple-converted-space"> </span>Canadian
Urban Forest Network <<a
href="mailto:canufnet@list.web.net"
style="color: blue; text-decoration: underline;"
class="moz-txt-link-freetext"
moz-do-not-send="true">canufnet@list.web.net</a>><br
class="">
<b class="">Cc:</b><span
class="Apple-converted-space"> </span>Naomi
Zurcher <<a
href="mailto:treerap@sprintmail.com"
style="color: blue; text-decoration: underline;"
class="moz-txt-link-freetext"
moz-do-not-send="true">treerap@sprintmail.com</a>><br
class="">
<b class="">Subject:</b><span
class="Apple-converted-space"> </span>Re:
[CANUFNET] Trees and boulevards<o:p class=""></o:p></span></div>
</div>
</div>
<div style="margin: 0cm; font-size: 11pt; font-family:
Calibri, sans-serif;" class=""><o:p class=""> </o:p></div>
<div style="margin: 0cm; font-size: 11pt; font-family:
Calibri, sans-serif;" class="">Philip - as I had
indicated, I thought this should at least be possible
with Public Infrastructure projects.<o:p class=""></o:p></div>
<div class="">
<div style="margin: 0cm; font-size: 11pt; font-family:
Calibri, sans-serif;" class=""><o:p class=""> </o:p></div>
</div>
<div class="">
<div style="margin: 0cm; font-size: 11pt; font-family:
Calibri, sans-serif;" class="">Is it being required
for projects on public lands?<o:p class=""></o:p></div>
<div class="">
<div style="margin: 0cm; font-size: 11pt; font-family:
Calibri, sans-serif;" class=""><br class="">
<br class="">
<o:p class=""></o:p></div>
<blockquote style="margin-top: 5pt; margin-bottom:
5pt;" class="" type="cite">
<div class="">
<div style="margin: 0cm; font-size: 11pt;
font-family: Calibri, sans-serif;" class="">On
Oct 4, 2021, at 10:37 AM, pwassenaer1022--- via
CANUFNET <<a
href="mailto:canufnet@list.web.net"
style="color: blue; text-decoration:
underline;" class="moz-txt-link-freetext"
moz-do-not-send="true">canufnet@list.web.net</a>>
wrote:<o:p class=""></o:p></div>
</div>
<div style="margin: 0cm; font-size: 11pt;
font-family: Calibri, sans-serif;" class=""><o:p
class=""> </o:p></div>
<div class="">
<div class="">
<div style="margin: 0cm; font-size: 11pt;
font-family: Calibri, sans-serif;" class="">Ha
ha ha….entirely possible but who will impose
that and enforce it on the development
community?<o:p class=""></o:p></div>
</div>
<div class="">
<div style="margin: 0cm; font-size: 11pt;
font-family: Calibri, sans-serif;" class=""> <o:p
class=""></o:p></div>
</div>
<div class="">
<div style="margin: 0cm; font-size: 11pt;
font-family: Calibri, sans-serif;" class="">In
my experience the development community has an
inordinate amount of sway over municipalities
and things related to development. Until that
changes, these things will remain “possible”
but will not be implemented…<o:p class=""></o:p></div>
</div>
<div class="">
<div style="margin: 0cm; font-size: 11pt;
font-family: Calibri, sans-serif;" class=""> <o:p
class=""></o:p></div>
</div>
<div class="">
<div style="margin: 0cm; font-size: 11pt;
font-family: Calibri, sans-serif;" class="">Philip<o:p
class=""></o:p></div>
</div>
<div class="">
<div style="margin: 0cm; font-size: 11pt;
font-family: Calibri, sans-serif;" class=""> <o:p
class=""></o:p></div>
</div>
<div class="">
<div style="border-style: solid none none;
border-top-width: 1pt; border-top-color:
rgb(225, 225, 225); padding: 3pt 0cm 0cm;"
class="">
<div class="">
<div style="margin: 0cm; font-size: 11pt;
font-family: Calibri, sans-serif;"
class=""><b class=""><span class=""
lang="EN-US">From:</span></b><span
class="apple-converted-space"><span
class="" lang="EN-US"> </span></span><span
class="" lang="EN-US">CANUFNET <<a
href="mailto:canufnet-bounces@list.web.net"
style="color: blue; text-decoration:
underline;"
class="moz-txt-link-freetext"
moz-do-not-send="true">canufnet-bounces@list.web.net</a>><span
class="apple-converted-space"> </span><b
class="">On Behalf Of<span
class="apple-converted-space"> </span></b>Naomi
Zurcher via CANUFNET<br class="">
<b class="">Sent:</b><span
class="apple-converted-space"> </span>October
4, 2021 10:08 AM<br class="">
<b class="">To:</b><span
class="apple-converted-space"> </span>Canadian
Urban Forest Network <<a
href="mailto:canufnet@list.web.net"
style="color: blue; text-decoration:
underline;"
class="moz-txt-link-freetext"
moz-do-not-send="true">canufnet@list.web.net</a>><br
class="">
<b class="">Cc:</b><span
class="apple-converted-space"> </span>Naomi
Zurcher <<a
href="mailto:treerap@sprintmail.com"
style="color: blue; text-decoration:
underline;"
class="moz-txt-link-freetext"
moz-do-not-send="true">treerap@sprintmail.com</a>><br
class="">
<b class="">Subject:</b><span
class="apple-converted-space"> </span>Re:
[CANUFNET] Trees and boulevards</span><o:p
class=""></o:p></div>
</div>
</div>
</div>
<div class="">
<div style="margin: 0cm; font-size: 11pt;
font-family: Calibri, sans-serif;" class=""> <o:p
class=""></o:p></div>
</div>
<div class="">
<div style="margin: 0cm; font-size: 11pt;
font-family: Calibri, sans-serif;" class="">Why
can’t municipalities require that any and all
construction must remove existing topsoil in
lifts and thoughtfully store that topsoil for
re-installation on the same site. This should
be entirely possible at least on public
infrastructure projects.<o:p class=""></o:p></div>
</div>
<div class="">
<div class="">
<div style="margin: 0cm; font-size: 11pt;
font-family: Calibri, sans-serif;" class=""><br
class="">
<br class="">
<br class="">
<o:p class=""></o:p></div>
</div>
<blockquote style="margin-top: 5pt;
margin-bottom: 5pt;" class="" type="cite">
<div class="">
<div class="">
<div style="margin: 0cm; font-size: 11pt;
font-family: Calibri, sans-serif;"
class="">On Oct 1, 2021, at 1:34 PM,
Oliver Reichl via CANUFNET <<a
href="mailto:canufnet@list.web.net"
style="color: blue; text-decoration:
underline;"
class="moz-txt-link-freetext"
moz-do-not-send="true">canufnet@list.web.net</a>>
wrote:<o:p class=""></o:p></div>
</div>
</div>
<div class="">
<div style="margin: 0cm; font-size: 11pt;
font-family: Calibri, sans-serif;"
class=""> <o:p class=""></o:p></div>
</div>
<div class="">
<div class="">
<div class="">
<div style="margin: 0cm; font-size:
11pt; font-family: Calibri,
sans-serif;" class=""><span
style="color: rgb(49, 49, 49);"
class="">“Nowadays developers remove
all of the precious topsoil from the
land before building a new
subdivision, then bring back enough
topsoil to support the new sod.“</span><o:p
class=""></o:p></div>
</div>
</div>
<div class="">
<div class="">
<div style="margin: 0cm; font-size:
11pt; font-family: Calibri,
sans-serif;" class=""><span
style="color: rgb(49, 49, 49);"
class=""><br class="">
<br class="">
<br class="">
</span><o:p class=""></o:p></div>
</div>
</div>
<div class="">
<div class="">
<div style="margin: 0cm; font-size:
11pt; font-family: Calibri,
sans-serif;" class=""><span
style="color: rgb(49, 49, 49);"
class="">That’s been standard
practice in the GTA for decades. Can
a municipality regulate soil
volumes?</span><o:p class=""></o:p></div>
</div>
</div>
<div class="">
<div class="">
<div style="margin: 0cm; font-size:
11pt; font-family: Calibri,
sans-serif;" class=""> <o:p class=""></o:p></div>
</div>
<div class="">
<div class="">
<div class="">
<div style="margin: 0cm; font-size:
11pt; font-family: Calibri,
sans-serif;" class="">On Fri, Oct
1, 2021 at 11:12 AM Trevor Thistle
via CANUFNET <<a
href="mailto:canufnet@list.web.net"
style="color: blue;
text-decoration: underline;"
class="moz-txt-link-freetext"
moz-do-not-send="true">canufnet@list.web.net</a>>
wrote:<o:p class=""></o:p></div>
</div>
</div>
<blockquote style="border-style: none
none none solid; border-left-width:
1pt; border-left-color: rgb(204, 204,
204); padding: 0cm 0cm 0cm 6pt;
margin: 5pt 0cm 5pt 48pt;" class=""
type="cite">
<div class="">
<div class="">
<div style="margin: 0cm;
font-size: 11pt; font-family:
Calibri, sans-serif;" class="">Hi
Ian, <o:p class=""></o:p></div>
</div>
<div class="">
<div class="">
<div style="margin: 0cm;
font-size: 11pt; font-family:
Calibri, sans-serif;" class=""> <o:p
class=""></o:p></div>
</div>
</div>
<div class="">
<div class="">
<div style="margin: 0cm;
font-size: 11pt; font-family:
Calibri, sans-serif;" class="">Here
in Edmonton I have been
working almost
exclusively with tree
conservation during
Neighborhood Renewal (NR) for
13 years. NR is the process of
reconstructing all sidewalks,
curbs and streets in a
neighborhood, as well as
adding missing
infrastructure. <o:p class=""></o:p></div>
</div>
</div>
<div class="">
<div class="">
<div style="margin: 0cm;
font-size: 11pt; font-family:
Calibri, sans-serif;" class=""> <o:p
class=""></o:p></div>
</div>
</div>
<div class="">
<div class="">
<div style="margin: 0cm;
font-size: 11pt; font-family:
Calibri, sans-serif;" class="">In
our oldest neighborhoods I
feel that trees growing in
boulevards with
separate sidewalks (curb on
one side, sidewalk on the
other side of the tree) have
not really been impacted by
the
perceived restricted growing
area, with the exception of
roots literally
engulfing curbs or overlapping
sidewalks. I believe that the
reason for this is that the
construction standards that
were in place decades ago
(between neighborhood
establishment and the time the
sidewalk was last replaced)
allowed for the
construction of sidewalks on
top of organic soil. So, in
most cases, the trees had
little challenge accessing
soil beyond the boulevard. <o:p
class=""></o:p></div>
</div>
</div>
<div class="">
<div class="">
<div style="margin: 0cm;
font-size: 11pt; font-family:
Calibri, sans-serif;" class=""> <o:p
class=""></o:p></div>
</div>
</div>
<div class="">
<div class="">
<div style="margin: 0cm;
font-size: 11pt; font-family:
Calibri, sans-serif;" class="">However,
new construction standards
include a gravel base and
mechanical compaction under
sidewalks. Also,
greenfield construction is not
what it used to be. Nowadays
developers remove all of the
precious topsoil from the land
before building a new
subdivision, then bring back
enough topsoil to support the
new sod. In these cases,
regardless of the sidewalk
design (mono or seperate) the
trees do not have enough soil
volume to support them. We do
amend soil volumes with
trenches in
separate boulevards, but these
are trenches in clay with
still inadequate soil volumes.
So my point is, depending on
construction practices
and standards, the
configuration of the sidewalks
in relation to the trees may
have less impact on soil
growing space than we think. <o:p
class=""></o:p></div>
</div>
</div>
<div class="">
<div class="">
<div style="margin: 0cm;
font-size: 11pt; font-family:
Calibri, sans-serif;" class=""> <o:p
class=""></o:p></div>
</div>
</div>
<div class="">
<div class="">
<div style="margin: 0cm;
font-size: 11pt; font-family:
Calibri, sans-serif;" class="">but
I would agree that trees in a
more free to grow state, with
little or no barriers to
quality soil will outperform a
tree in restricted growing
space, and there will be fewer
infrastructure / tree
conflicts. This means that we
will minimize tree
related damages to
infrastructure and
construction related damages
to trees in order to maintain
that infrastructure. <o:p
class=""></o:p></div>
</div>
</div>
<div class="">
<div class="">
<div style="margin: 0cm;
font-size: 11pt; font-family:
Calibri, sans-serif;" class=""> <o:p
class=""></o:p></div>
</div>
</div>
<div class="">
<div class="">
<div style="margin: 0cm;
font-size: 11pt; font-family:
Calibri, sans-serif;" class=""> <o:p
class=""></o:p></div>
</div>
</div>
<div class="">
<div class="">
<div class="">
<div class="">
<div class="">
<div class="">
<div class="">
<div class="">
<div class="">
<div class="">
<div class="">
<div class="">
<div
style="margin:
0cm;
font-size:
11pt;
font-family:
Calibri,
sans-serif;"
class=""><b
class=""><span
style="font-size: 12pt; font-family: Arial, sans-serif; color: rgb(32,
33, 36);"
class="">Trevor
Thistle</span></b><span
class="apple-converted-space"><b class=""><span style="font-size: 10pt;
font-family:
Arial,
sans-serif;
color: rgb(32,
33, 36);"
class=""> </span></b></span><b
class=""><span
style="font-size: 7.5pt; font-family: Arial, sans-serif; color: rgb(32,
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class="">Bsc.
Forestry</span></b><o:p
class=""></o:p></div>
</div>
</div>
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<div class="">
<div
style="margin:
0cm;
font-size:
11pt;
font-family:
Calibri,
sans-serif;"
class=""><b
class="">Urban
Forester | PR-4760AM | Tree Risk Assessment Qualified</b><o:p class=""></o:p></div>
</div>
</div>
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<div class="">
<div class="">
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underline;"
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of Edmonton </a></span><o:p
class=""></o:p></div>
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style="margin:
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style="color:
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underline;"
class=""
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58 Street NW</a></span><o:p
class=""></o:p></div>
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style="margin:
0cm;
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style="margin:
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sans-serif;"
class=""><span
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<div style="margin: 0cm;
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<div style="margin: 0cm;
font-size: 11pt; font-family:
Calibri, sans-serif;" class="">On
Wed, Sep 29, 2021 at 9:21 AM
Ian Wilson via CANUFNET <<a
href="mailto:canufnet@list.web.net" target="_blank" style="color: blue;
text-decoration: underline;"
class="moz-txt-link-freetext" moz-do-not-send="true">canufnet@list.web.net</a>>
wrote:<o:p class=""></o:p></div>
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<div style="margin: 0cm;
font-size: 11pt;
font-family: Calibri,
sans-serif;" class=""><span
class="" lang="EN-US">All,
we are having a bit of
an internal debate about
standards for
local/residential roads
and boulevards. My
observation is that
trees that are planted
in a boulevard behind a
monolithic sidewalk
(sidewalk up against the
curb and planting area
next to the property)
generally do better.
They have access to more
soil volume in the front
yard, they get more
water and the boulevard
is tidier since the
homeowner treats it like
part of their yard. Also
fewer issues with roots
lifting sidewalks. Some
of our staff prefer the
separated treed
boulevard, for various
reasons. Note, I’m not
talking about busier
roads where the trees in
boulevards help to form
a barrier from traffic.</span><o:p
class=""></o:p></div>
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<div style="margin: 0cm;
font-size: 11pt;
font-family: Calibri,
sans-serif;" class=""><span
class="" lang="EN-US"> </span><o:p
class=""></o:p></div>
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<div style="margin: 0cm;
font-size: 11pt;
font-family: Calibri,
sans-serif;" class=""><span
class="" lang="EN-US">We
don’t have a lot of good
examples here that
directly show a
comparison. Does anybody
have some photos that
might show the
performance of trees on
one side of the road in
a separated boulevard,
vs. trees on the other
side behind the
sidewalk?</span><o:p
class=""></o:p></div>
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<div style="margin: 0cm;
font-size: 11pt;
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sans-serif;" class=""><span
class="" lang="EN-US"> </span><o:p
class=""></o:p></div>
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<div style="margin: 0cm;
font-size: 11pt;
font-family: Calibri,
sans-serif;" class=""><span
class="" lang="EN-US">Below
is an example that
doesn’t exactly show
this, but it does show
the value of soil
volume, with the trees
on the left side being
able to access the lawn
area behind the
sidewalk, vs. the trees
in “coffins” on the
right. These are lindens
planted at the same
time.</span><o:p
class=""></o:p></div>
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<div style="margin: 0cm;
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class="" lang="EN-US"><span
id="cid:image003.jpg@01D7B9F0.B5ACA880"><image003.jpg></span></span><o:p
class=""></o:p></div>
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<div style="margin: 0cm;
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class="" lang="EN-US"> </span><o:p
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<div class="">
<div style="margin: 0cm;
font-size: 11pt;
font-family: Calibri,
sans-serif;" class=""><span
class="" lang="EN-US"> </span><o:p
class=""></o:p></div>
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<p class="MsoNormal"
style="margin: 0cm 0cm 12pt;
font-size: 11pt;
font-family: Calibri,
sans-serif;"><b class=""><span
style="font-family:
Corbel, sans-serif;
color: rgb(0, 115,
207);" class=""
lang="EN-US">Ian Wilson</span></b><span
style="font-family:
Corbel, sans-serif; color:
rgb(38, 38, 38);" class=""
lang="EN"><br class="">
</span><span
style="font-family:
Corbel, sans-serif;"
class="" lang="EN">Infrastructure
Operations Manager | City
of Kelowna<br class="">
250-469-8842 |<span
class="apple-converted-space"> </span><a
href="mailto:iwilson@kelowna.ca" target="_blank" style="color: blue;
text-decoration:
underline;" class=""
moz-do-not-send="true"><span
style="color: rgb(5,
99, 193);" class="">iwilson@kelowna.ca</span></a></span><span
style="font-family:
Corbel, sans-serif;"
class="" lang="EN-US"><br
class="">
</span><span
style="font-family:
Corbel, sans-serif;"
class="" lang="EN">Submit
a request for service on
the go |<span
class="apple-converted-space"> </span><a
href="http://kelowna.ca/" target="_blank" style="color: blue;
text-decoration:
underline;" class=""
moz-do-not-send="true">kelowna.ca</a></span><o:p
class=""></o:p></p>
<p class="MsoNormal"
style="margin: 0cm 0cm 12pt;
font-size: 11pt;
font-family: Calibri,
sans-serif;"><i class=""><span
style="font-family:
Corbel, sans-serif;
background-color:
white;" class=""
lang="EN-US">I
acknowledge that my
workplace is located on
the traditional,
ancestral, unceded
territory of the
syilx/Okanagan people</span></i><i
class=""><span
style="font-family:
Corbel, sans-serif;"
class="">.</span></i><o:p
class=""></o:p></p>
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<div style="margin: 0cm;
font-size: 11pt;
font-family: Calibri,
sans-serif;" class=""><span
class="" lang="EN-US"> </span><o:p
class=""></o:p></div>
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11pt; font-family: Calibri,
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confidential, proprietary to
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addressed recipient. If you
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class=""></o:p></div>
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<div style="margin: 0cm; font-size: 11pt;
font-family: Calibri, sans-serif;"
class="">--<span
class="apple-converted-space"> </span><o:p
class=""></o:p></div>
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<div class="">
<div style="margin: 0cm; font-size:
11pt; font-family: Calibri,
sans-serif;" class="">Oliver K.
Reichl, B.E.S.(Hons)<br class="">
-----------<br class="">
Sent from my mobile phone.</div>
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