[CANUFNET] tree protection

Tue Jan 17 10:13:58 EST 2017

Hi Jill:

Not sure what you are referring to when you say the "ground cover" is hardscape. Are these curbside trees? Are they in a tree lawn or a pavement cut-out or...?

One possibility to expand the rooting area for newly planted trees, especially if there is open landscape on the other side of the paved area, is to install CU soil or the Amsterdam soil mix underneath the pavement. This would provide additional rootable area as a best case if there was open landscape on the other side of the pavement or, worst case just to expand access to non-permeable areas.

As to tree selection, it would have to address the issues that you have mentioned - exposure to de-icing salts and an ability to tolerate pollution and droughty conditions. There are extensive lists that offer possibilities. Planting trees that cannot tolerate these classic urban situations is not acceptable.

As to infrastructure projects and private development that impact trees, please see my separate reply to Michelle.

Naomi
On Jan 16, 2017, at 3:37 PM, "Courtemanche, Jill via CANUFNET" <canufnet at list.web.net> wrote:

> Michelle you are right to be concerned; in Ottawa we have similar bylaws prohibiting the removal of mature trees for development, but there are many instances of “oops, sorry”. I live in the downtown core and five years ago sewers were replaced on my street. Now, what was a perfectly healthy 83 year old maple on the City part of my lawn has been declared unsalvageable, I surmise because of damage to the roots. We are losing mature trees in the core either from similar causes, or storms which bring down trees weakened by salt, pollution, or drought. My concern now is that the trees being planted to replace mature ones don’t seem able to survive. Does anyone on the list have encouraging results from new trees planted in reconstructed streets, where the ground cover is asphalt/brick/cement?
>  
> Jill Courtemanche R.N./I.A. BSc.NEd
> Emergency Preparedness Health Specialist/
> Spécialiste des mesures d'urgence pour la santé
> Ottawa Public Health / Santé publique Ottawa
> 100 promenade Constellation Drive 7 West / Ouest
> Mail code / code de courrier : 26-50
> Ottawa K2G 6J8
> 613-580-2424 x23568 613-552-0410 c.
> Fax / téléc. : 613-580-9601
> ottawapublichealth.ca /santepubliqueottawa.ca
>  
> 
> 
> 
> 
> 
>  
>  
> From: CANUFNET [mailto:canufnet-bounces at list.web.net] On Behalf Of Chartier, Michelle (CY - Parks) via CANUFNET
> Sent: Monday, January 16, 2017 2:48 PM
> To: 'canufnet at list.web.net'
> Subject: [CANUFNET] tree protection
>  
> Hi all,
>  
> I’m trying to track down samples of city policies or bylaws related to tree protection that effectively balance the protection of established trees and new in-fill building. Saskatoon is currently seeing several large building projects and homes being built in established neighbourhoods where the work site is surrounded by large valuable City trees. We currently have a City Council policy in place that provide Urban Forestry with direction related to tree protection. As part of this policy we do not remove large (>15cm” diameter) healthy trees for development. However we are finding ourselves in a difficult position of attempting to work with construction companies hired to build what does not reasonably allow for preservation or protection of the existing tree(s). In some cases the building footprint requires excavation that will result in ~40%-50% root removal. Often the damage is done on the private property side when our City trees are close to property lines or in some cases straddle property lines (funny how tree roots just don’t respect property lines).
>  
> I know there are several cities that have tree protection bylaws and some also protect private trees. I’m wondering if anyone knows of a really good example that might include standards that include what can and can’t be done on private property adjacent to City trees. I’d also like to know if anyone can share their experience or views (what has worked and what hasn’t worked) with existing Bylaw or policies.
>  
> Thanks, 
>    
>  
> Michelle Chartier
> City of Saskatoon
> Community Services, Parks Division
> Superintendent - Urban Forestry/Pest Management
> Ph: 306.975-2537  Fax: 306.975.3034
> michelle.chartier at saskatoon.ca
> This e-mail originates from the City of Ottawa e-mail system. Any distribution, use or copying of this e-mail or the information it contains by other than the intended recipient(s) is unauthorized. Thank you.
> 
> Le présent courriel a été expédié par le système de courriels de la Ville d'Ottawa. Toute distribution, utilisation ou reproduction du courriel ou des renseignements qui s'y trouvent par une personne autre que son destinataire prévu est interdite. Je vous remercie de votre collaboration.
> 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://list.web.net/pipermail/canufnet/attachments/20170117/47d328b1/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.jpg
Type: image/jpeg
Size: 2114 bytes
Desc: not available
URL: <http://list.web.net/pipermail/canufnet/attachments/20170117/47d328b1/attachment-0010.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image002.jpg
Type: image/jpeg
Size: 2179 bytes
Desc: not available
URL: <http://list.web.net/pipermail/canufnet/attachments/20170117/47d328b1/attachment-0011.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image003.jpg
Type: image/jpeg
Size: 1721 bytes
Desc: not available
URL: <http://list.web.net/pipermail/canufnet/attachments/20170117/47d328b1/attachment-0012.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image004.jpg
Type: image/jpeg
Size: 1696 bytes
Desc: not available
URL: <http://list.web.net/pipermail/canufnet/attachments/20170117/47d328b1/attachment-0013.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image005.jpg
Type: image/jpeg
Size: 1793 bytes
Desc: not available
URL: <http://list.web.net/pipermail/canufnet/attachments/20170117/47d328b1/attachment-0014.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image006.jpg
Type: image/jpeg
Size: 1758 bytes
Desc: not available
URL: <http://list.web.net/pipermail/canufnet/attachments/20170117/47d328b1/attachment-0015.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image007.jpg
Type: image/jpeg
Size: 2236 bytes
Desc: not available
URL: <http://list.web.net/pipermail/canufnet/attachments/20170117/47d328b1/attachment-0016.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image008.jpg
Type: image/jpeg
Size: 2229 bytes
Desc: not available
URL: <http://list.web.net/pipermail/canufnet/attachments/20170117/47d328b1/attachment-0017.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image009.jpg
Type: image/jpeg
Size: 2145 bytes
Desc: not available
URL: <http://list.web.net/pipermail/canufnet/attachments/20170117/47d328b1/attachment-0018.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image010.jpg
Type: image/jpeg
Size: 2141 bytes
Desc: not available
URL: <http://list.web.net/pipermail/canufnet/attachments/20170117/47d328b1/attachment-0019.jpg>