<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman",serif;
color:black;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p
{mso-style-priority:99;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman",serif;
color:black;}
pre
{mso-style-priority:99;
mso-style-link:"HTML Preformatted Char";
margin:0in;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:"Courier New";
color:black;}
p.msonormal0, li.msonormal0, div.msonormal0
{mso-style-name:msonormal;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman",serif;
color:black;}
span.HTMLPreformattedChar
{mso-style-name:"HTML Preformatted Char";
mso-style-priority:99;
mso-style-link:"HTML Preformatted";
font-family:"Consolas",serif;
color:black;}
span.EmailStyle21
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body bgcolor="white" lang="EN-CA" link="blue" vlink="purple">
<div class="WordSection1">
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">FYI, in Vancouver we have a database of our street trees going back to 1990. Condition ratings are, as mentioned, very subjective
and changeable, but the system we’ve used over the years is:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">0 dead<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">1 very poor<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">2 very poor/poor<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">3 poor<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">4 poor/fair<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">5 fair<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">6 good<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">7 very good<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">8 very good/excellent<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">9 excellent<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Filtering out all stumps and trees designated for removal, our average condition rating as of September 2021 was 7.048. This may be
skewed toward the high end because it includes a lot of new plantings that are usually put in as condition 9 at first, until we visit the tree again, which might not be for a few years. Generally speaking, we consider a 7 to be equivalent to 70%, etc. We
have no 100% rating, in other words. It’s the system we are familiar with, so it works reasonably well for us, mostly as a risk-management tool.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">We’ve never set a ‘target condition rating’ for our trees. Tree condition ratings do, on rare occasions, improve for individual trees
if our pruning or other tree care efforts yield results, but usually they stay the same or go down.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Cabot Lyford (he/him)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Arboriculture Technician<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Vancouver Park Board<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">604 257 8587<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Cabot.lyford@vancouver.ca<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext"> CANUFNET <canufnet-bounces@list.web.net>
<b>On Behalf Of </b>Julian Dunster via CANUFNET<br>
<b>Sent:</b> Thursday, January 6, 2022 1:44 PM<br>
<b>To:</b> canufnet@list.web.net<br>
<b>Cc:</b> Julian Dunster <jd@dunster.ca><br>
<b>Subject:</b> [EXT] Re: [CANUFNET] Optimal Tree Health Condition Rating<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span style="font-family:"Arial",sans-serif;color:red">City of Vancouver security warning:
</span></b><span style="font-family:"Arial",sans-serif">Do not click on links or open attachments unless you were expecting the email and know the content is safe.</span><o:p></o:p></p>
<div class="MsoNormal" align="center" style="text-align:center">
<hr size="2" width="100%" align="center">
</div>
<p>Bonjour Bruno<o:p></o:p></p>
<p>I think you are looking for a suggested health rating. Using the word target may be confusing as that is usually reserved for the target of concern in the event of failure. I am not sure there is such a thing as a suggested health rating that can be equitably
applied in all cases. Many of us use a very broad scheme: Good (no obvious problems of concern), Fair (some problems but none of them too serious right now, but a downward trend is likely), and Poor (obvious problems that the tree will not overcome and mortality
is likely sooner not later). I try to avoid splitting it down into really fine components because they never ever work in every situation, most of it is very subjective, and it can change quite rapidly. I really don't know what the percentage figures would
tell you (I am assuming that you did not mean percentage of canopy cover). With climate change (prolonged summer drought and heat domes year after year) overall tree health in urban and rural areas is trending downwards very rapidly on the west coast, especially
on Vancouver Island. <o:p></o:p></p>
<pre>Yours sincerely,<o:p></o:p></pre>
<pre>On Behalf of Dunster and Associates Environmental Consultants Ltd.<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre><o:p> </o:p></pre>
<pre>Dr. Julian A Dunster R.P.F., R.P.P.., M.C.I.P., ISA Certified Arborist,<o:p></o:p></pre>
<pre>ASCA Registered Consulting Arborist # 378, <o:p></o:p></pre>
<pre>ISA Tree Risk Assessment Qualified<o:p></o:p></pre>
<pre>Honourary Life Member ISA + PNWISA<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre><a href="https://urldefense.com/v3/__http:/www.dunster.ca__;!!G4oVokrRG-Im!6hI8-gIP-vXp7hvCRDGkt9KWNIkGhMPBvpBddaX38b4facTaHuNK-H0zCIu3QvBWSs62MjI$">www.dunster.ca [dunster.ca]</a><o:p></o:p></pre>
<pre><a href="https://urldefense.com/v3/__http:/www.treelaw.info__;!!G4oVokrRG-Im!6hI8-gIP-vXp7hvCRDGkt9KWNIkGhMPBvpBddaX38b4facTaHuNK-H0zCIu3QvBWUqQ_yAU$">www.treelaw.info [treelaw.info]</a><o:p></o:p></pre>
<pre>North American distributor for Rinntech <a href="https://urldefense.com/v3/__http:/www.rinntech.info__;!!G4oVokrRG-Im!6hI8-gIP-vXp7hvCRDGkt9KWNIkGhMPBvpBddaX38b4facTaHuNK-H0zCIu3QvBWvwB42TE$">www.rinntech.info [rinntech.info]</a><o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre><o:p> </o:p></pre>
<div>
<p class="MsoNormal">On Thu/1/6/2022 9:57 AM, Bruno PAQUET via CANUFNET wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<div>
<p class="MsoNormal" style="margin-bottom:8.0pt;line-height:106%"><span style="font-size:11.0pt;line-height:106%;font-family:"Calibri",sans-serif">Hello everyone,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:8.0pt;line-height:106%"><span style="font-size:11.0pt;line-height:106%;font-family:"Calibri",sans-serif">Best wishes for the year ahead with hopefully less COVID considerations.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:8.0pt;line-height:106%"><span style="font-size:11.0pt;line-height:106%;font-family:"Calibri",sans-serif">Being responsible for the urban forest of a borough on the Montreal Island, I am looking for references on the
optimal target rating for the health condition of public trees.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:8.0pt;line-height:106%"><span style="font-size:11.0pt;line-height:106%;font-family:"Calibri",sans-serif">A recent study I commissioned (2021) showed, based on a sampling of 10% of our public tree population, that the
condition rating of our trees along streets and in parks was 67%.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:8.0pt;line-height:106%"><span style="font-size:11.0pt;line-height:106%;font-family:"Calibri",sans-serif">I have consulted many documents and have not found anything specific about a target for such an optimal rating,
which would be recognized by the community as desirable. A target score of 100% would obviously be completely unrealistic but what should we aim for, 80, 85 or 90%.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:8.0pt;line-height:106%"><span style="font-size:11.0pt;line-height:106%;font-family:"Calibri",sans-serif">Your comments would be appreciated.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:8.0pt;line-height:106%"><span style="font-size:11.0pt;line-height:106%;font-family:"Calibri",sans-serif">Thanks<o:p></o:p></span></p>
<div>
<div>
<div>
<div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<div>
<p class="MsoNormal"><b><span style="font-size:13.5pt;font-family:"Tahoma",sans-serif">Bruno Paquet</span></b>
<o:p></o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="color:#1155CC"><a href="mailto:bruno.paquet@montreal.ca" target="_blank"><span style="color:#1155CC">bruno.paquet@montreal.ca</span></a></span><span style="color:#500050"> </span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</div>
</div>
<p class="MsoNormal"><br>
<b><u><span style="font-family:"Arial",sans-serif;color:#263238">AVERTISSEMENT</span></u></b><span style="font-family:"Arial",sans-serif;color:#263238"> : Ce courriel et les pièces qui y sont jointes sont destinés exclusivement au(x) destinataire(s) mentionné(s)
ci-dessus et peuvent contenir de l’information privilégiée ou confidentielle. Si vous avez reçu ce courriel par erreur, ou s’il ne vous est pas destiné, veuillez le mentionner immédiatement à l’expéditeur et effacer ce courriel ainsi que les pièces jointes,
le cas échéant. La copie ou la redistribution non autorisée de ce courriel peut être illégale. Le contenu de ce courriel ne peut être interprété qu’en conformité avec les lois et règlements qui régissent les pouvoirs des diverses instances décisionnelles compétentes
de la Ville de Montréal.</span> <o:p></o:p></p>
</blockquote>
</div>
</body>
</html>